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they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


1

IDRISI Land Change Modeler | Open Energy Information  

Open Energy Info (EERE)

IDRISI Land Change Modeler IDRISI Land Change Modeler Jump to: navigation, search Tool Summary LAUNCH TOOL Name: IDRISI Land Change Modeler Agency/Company /Organization: Clark Labs Sector: Land Focus Area: Agriculture, Forestry Topics: Co-benefits assessment, - Environmental and Biodiversity, Resource assessment Resource Type: Maps, Software/modeling tools User Interface: Desktop Application Website: www.clarklabs.org/ Cost: Paid IDRISI Land Change Modeler Screenshot References: IDRISI Land Change Modeler[1] Overview "The Land Change Modeler is revolutionary land cover change analysis and prediction software with tools to analyze, measure and project the impacts of such change on habitat and biodiversity." References ↑ "IDRISI Land Change Modeler" Retrieved from

2

Modeling biofuel expansion effects on land use change dynamics  

Science Journals Connector (OSTI)

Increasing demand for crop-based biofuels, in addition to other human drivers of land use, induces direct and indirect land use changes (LUC). Our system dynamics tool is intended to complement existing LUC modeling approaches and to improve the understanding of global LUC drivers and dynamics by allowing examination of global LUC under diverse scenarios and varying model assumptions. We report on a small subset of such analyses. This model provides insights into the drivers and dynamic interactions of LUC (e.g., dietary choices and biofuel policy) and is not intended to assert improvement in numerical results relative to other works.Demand for food commodities are mostly met in high food and high crop-based biofuel demand scenarios, but cropland must expand substantially. Meeting roughly 25% of global transportation fuel demand by 2050 with biofuels requires >2 times the land used to meet food demands under a presumed 40% increase in per capita food demand. In comparison, the high food demand scenario requires greater pastureland for meat production, leading to larger overall expansion into forest and grassland. Our results indicate that, in all scenarios, there is a potential for supply shortfalls, and associated upward pressure on prices, of food commodities requiring higher land use intensity (e.g., beef) which biofuels could exacerbate.

Ethan Warner; Daniel Inman; Benjamin Kunstman; Brian Bush; Laura Vimmerstedt; Steve Peterson; Jordan Macknick; Yimin Zhang

2013-01-01T23:59:59.000Z

3

A Spatial Simulation Model of Land Use Changes in a Piedmont County in Georgia  

E-Print Network [OSTI]

A Spatial Simulation Model of Land Use Changes in a Piedmont County in Georgia Monica Goigel Turner* Institute of Ecology University of Georgia Athens, Georgia ABSTRACT A spatial simulation model was developed be explicitly included in simulation models to gain an understanding of landscape level phenomena, and at least

Turner, Monica G.

4

Global Climate Change,Global Climate Change, Land Cover Change, andLand Cover Change, and  

E-Print Network [OSTI]

1 Global Climate Change,Global Climate Change, Land Cover Change, andLand Cover Change Changes · Due to ­ Climate Change ­ Land Cover / Land Use Change ­ Interaction of Climate and Land Cover Change · Resolution ­ Space ­ Time Hydro-Climatic Change · Variability vs. Change (Trends) · Point data

5

Pluralistic Modelling Approaches to Simulating Climate-Land Change Interactions in East Africa  

E-Print Network [OSTI]

with atmospheric trends such as greenhouse gas concentrations, to loop back to regional and global climate change dynamics (Giorgi and Mearns 1999). Developing robust forecasts of land use change is essential in the proper simulation of land-climate interactions. Forecasts of land use at regional scales require several

6

Research priorities in land use and land-cover change for the Earth system and integrated assessment modelling  

E-Print Network [OSTI]

). Copyright ? 2010 Royal Meteorological Society and Crown Copyright. KEY WORDS land use; land cover; Earth system models; integrated assessment models; research priorities Received 12 January 2009; Revised 9 March 2010; Accepted 14 March 2010 1. Introduction 1... biogeophysical, socio- economic and human decision-making perspectives. The Earth System Modeling (ESM) and the Integrated Assessment Modeling (IAM) communities play an impor- tant role in understanding and quantifying Earth system analysis and, specifically...

Hibbard, Kathy; Janetos, Anthony; van Vuuren, Detlef P.; Pongtatz, Julia; Rose, Steven K.; Betts, Richard; Herold, Martin; Feddema, Johannes J.

2010-01-01T23:59:59.000Z

7

Simulating the Biogeochemical and Biogeophysical Impacts of Transient Land Cover Change and Wood Harvest in the Community Climate System Model (CCSM4) from 1850 to 2100  

E-Print Network [OSTI]

To assess the climate impacts of historical and projected land cover change in the Community Climate System Model, version 4 (CCSM4), new time series of transient Community Land Model, version 4 (CLM4) plant functional ...

Lawrence, Peter J.; Feddema, Johannes J.; Bonan, Gordon B.; Meehl, Gerald A.; O’ Neill, Brian C.; Oleson, Keith W.; Levis, Samuel; Lawrence, David M.; Kluzek, Erik; Lindsay, Keith

2012-05-01T23:59:59.000Z

8

Land-use change trajectories up to 2050: insights from a global agro-economic model comparison  

SciTech Connect (OSTI)

Changes in agricultural land use have important implications for environmental services. Previous studies of agricultural land-use futures have been published indicating large uncertainty due to different model assumptions and methodologies. In this article we present a first comprehensive comparison of global agro-economic models that have harmonized drivers of population, GDP, and biophysical yields. The comparison allows us to ask two research questions: (1) How much cropland will be used under different socioeconomic and climate change scenarios? (2) How can differences in model results be explained? The comparison includes four partial and six general equilibrium models that differ in how they model land supply and amount of potentially available land. We analyze results of two different socioeconomic scenarios and three climate scenarios (one with constant climate). Most models (7 out of 10) project an increase of cropland of 1025% by 2050 compared to 2005 (under constant climate), but one model projects a decrease. Pasture land expands in some models, which increase the treat on natural vegetation further. Across all models most of the cropland expansion takes place in South America and sub-Saharan Africa. In general, the strongest differences in model results are related to differences in the costs of land expansion, the endogenous productivity responses, and the assumptions about potential cropland.

Schmitz, Christoph; van Meijl, Hans; Kyle, G. Page; Nelson, Gerald C.; Fujimori, Shinichiro; Gurgel, Angelo; Havlik, Petr; Heyhoe, Edwina; Mason d'Croz, Daniel; Popp, Alexander; Sands, Ronald; Tabeau, Andrzej; van der Mensbrugghe, Dominique; von Lampe, Martin; Wise, Marshall A.; Blanc, Elodie; Hasegawa, Tomoko; Kavallari, Aikaterini; Valin, Hugo

2014-01-01T23:59:59.000Z

9

Mapping socio-economic scenarios of land cover change: A GIS method to enable ecosystem service modelling  

E-Print Network [OSTI]

Mapping socio-economic scenarios of land cover change: A GIS method to enable ecosystem service Ecosystem services GIS Scenarios Spatial modelling Tanzania a b s t r a c t We present a GIS method to interpret qualitatively expressed socio-economic scenarios in quantitative map-based terms. (i) We built

Vermont, University of

10

Simulating the Biogeochemical and Biogeophysical Impacts of Transient Land Cover Change and Wood Harvest in the Community Climate System Model (CCSM4) from 1850 to 2100  

Science Journals Connector (OSTI)

To assess the climate impacts of historical and projected land cover change in the Community Climate System Model, version 4 (CCSM4), new time series of transient Community Land Model, version 4 (CLM4) plant functional type (PFT) and wood harvest ...

Peter J. Lawrence; Johannes J. Feddema; Gordon B. Bonan; Gerald A. Meehl; Brian C. ONeill; Keith W. Oleson; Samuel Levis; David M. Lawrence; Erik Kluzek; Keith Lindsay; Peter E. Thornton

2012-05-01T23:59:59.000Z

11

Impact of agricultural-based biofuel production on greenhouse gas emissions from land-use change: Key modelling choices  

Science Journals Connector (OSTI)

Abstract Recent regulations on biofuels require reporting of greenhouse gas (GHG) emission reductions related to feedstock-specific biofuels. However, the inclusion of GHG emissions from land-use change (LUC) into law and policy remains a subject of active discussion, with LUCGHG emissions an issue of intense research. This article identifies key modelling choices for assessing the impact of biofuel production on LUCGHG emissions. The identification of these modelling choices derives from evaluation and critical comparison of models from commonly accepted biofuelsLUCGHG modelling approaches. The selection and comparison of models were intended to cover factors related to production of agricultural-based biofuel, provision of land for feedstock, and GHG emissions from land-use conversion. However, some fundamental modelling issues are common to all stages of assessment and require resolution, including choice of scale and spatial coverage, approach to accounting for time, and level of aggregation. It is argued here that significant improvements have been made to address LUCGHG emissions from biofuels. Several models have been created, adapted, coupled, and integrated, but room for improvement remains in representing LUCGHG emissions from specific biofuel production pathways, as follows: more detailed and integrated modelling of biofuel supply chains; more complete modelling of policy frameworks, accounting for forest dynamics and other drivers of LUC; more heterogeneous modelling of spatial patterns of LUC and associated GHG emissions; and clearer procedures for accounting for the time-dependency of variables. It is concluded that coupling the results of different models is a convenient strategy for addressing effects with different time and space scales. In contrast, model integration requires unified scales and time approaches to provide generalised representations of the system. Guidelines for estimating and reporting LUCGHG emissions are required to help modellers to define the most suitable approaches and policy makers to better understand the complex impacts of agricultural-based biofuel production.

Luis Panichelli; Edgard Gnansounou

2015-01-01T23:59:59.000Z

12

Modeling urban growth and land use/land cover change in the Houston Metropolitan Area from 2002 - 2030  

E-Print Network [OSTI]

spatially explicit cellular automata model, to simulate future (2002-2030) urban growth in the Houston metropolitan area, one of the fastest growing metropolises in the United States during the past decades. The model is calibrated with historical data...

Oguz, Hakan

2005-08-29T23:59:59.000Z

13

Biofuels and land-use changes: searching for the top model  

Science Journals Connector (OSTI)

...land at the grid level. Owing...per unit of energy produced...provisions of the Renewable Fuel Standard...established by the Renewable Energy Directive...Considering local, national or regional...separately. The integration of spatially...impacts. The challenge in calculating...available at grid levels as...Agency. 2010 Renewable fuel standard...europa.eu/energy/renewables...

2011-01-01T23:59:59.000Z

14

Biofuels and indirect land use change  

E-Print Network [OSTI]

Biofuels and indirect land use change The case for mitigation October 2011 #12;About this study), Malaysian Palm Oil Board, National Farmers Union, Novozymes, Northeast Biofuels Collaborative, Patagonia Bio contributed views on a confidential basis. #12;1Biofuels and indirect land use change The case for mitigation

15

Ecosystem feedbacks to climate change in California: Development, testing, and analysis using a coupled regional atmosphere and land-surface model (WRF3-CLM3.5)  

SciTech Connect (OSTI)

A regional atmosphere model [Weather Research and Forecasting model version 3 (WRF3)] and a land surface model [Community Land Model, version 3.5 (CLM3.5)] were coupled to study the interactions between the atmosphere and possible future California land-cover changes. The impact was evaluated on California's climate of changes in natural vegetation under climate change and of intentional afforestation. The ability of WRF3 to simulate California's climate was assessed by comparing simulations by WRF3-CLM3.5 and WRF3-Noah to observations from 1982 to 1991. Using WRF3-CLM3.5, the authors performed six 13-yr experiments using historical and future large-scale climate boundary conditions from the Geophysical Fluid Dynamics Laboratory Climate Model version 2.1 (GFDL CM2.1). The land-cover scenarios included historical and future natural vegetation from the Mapped Atmosphere-Plant-Soil System-Century 1 (MC1) dynamic vegetation model, in addition to a future 8-million-ha California afforestation scenario. Natural vegetation changes alone caused summer daily-mean 2-m air temperature changes of -0.7 to +1 C in regions without persistent snow cover, depending on the location and the type of vegetation change. Vegetation temperature changes were much larger than the 2-m air temperature changes because of the finescale spatial heterogeneity of the imposed vegetation change. Up to 30% of the magnitude of the summer daily-mean 2-m air temperature increase and 70% of the magnitude of the 1600 local time (LT) vegetation temperature increase projected under future climate change were attributable to the climate-driven shift in land cover. The authors projected that afforestation could cause local 0.2-1.2 C reductions in summer daily-mean 2-m air temperature and 2.0-3.7 C reductions in 1600 LT vegetation temperature for snow-free regions, primarily because of increased evapotranspiration. Because some of these temperature changes are of comparable magnitude to those projected under climate change this century, projections of climate and vegetation change in this region need to consider these climate-vegetation interactions.

Subin, Z.M.; Riley, W.J.; Kueppers, L.M.; Jin, J.; Christianson, D.S.; Torn, M.S.

2010-11-01T23:59:59.000Z

16

LBA Land Use and Land Cover Change Data Sets Released  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

four data sets from the Carbon four data sets from the Carbon Dynamics and Nutrient Dynamics science themes, components of the LBA-ECO Large Scale Biosphere-Atmosphere Experiment in Amazonia (LBA). LBA-ECO CD-36 South American Land Data Assimilation System Atmospheric Forcing Data . Data set prepared by L.G.G. de Goncalves, W.J. Shuttleworth, D. Vila, E. Larroza, M.J. Bottino, D.L. Herdies, J.A. Aravequia, J.G. de Mattos, D.L. Toll, M. Rodell and P. Houser. This data set provides South American Land Data Assimilation System (SALDAS) atmospheric forcing data necessary for land surface modeling for South America. The data were derived by combining modeled and observation based sources.The forcing data cover the entire continent of South America at 0.125 degree resolution and are built around the model-calculated values of

17

A framework for benchmarking land models  

SciTech Connect (OSTI)

Land models, which have been developed by the modeling community in the past few decades to predict future states of ecosystems and climate, have to be critically evaluated for their performance skills of simulating ecosystem responses and feedback to climate change. Benchmarking is an emerging procedure to measure performance of models against a set of defined standards. This paper proposes a benchmarking framework for evaluation of land model performances and, meanwhile, highlights major challenges at this infant stage of benchmark analysis. The framework includes (1) targeted aspects of model performance to be evaluated, (2) a set of benchmarks as defined references to test model performance, (3) metrics to measure and compare performance skills among models so as to identify model strengths and deficiencies, and (4) model improvement. Land models are required to simulate exchange of water, energy, carbon and sometimes other trace gases between the atmosphere and land surface, and should be evaluated for their simulations of biophysical processes, biogeochemical cycles, and vegetation dynamics in response to climate change across broad temporal and spatial scales. Thus, one major challenge is to select and define a limited number of benchmarks to effectively evaluate land model performance. The second challenge is to develop metrics of measuring mismatches between models and benchmarks. The metrics may include (1) a priori thresholds of acceptable model performance and (2) a scoring system to combine datamodel mismatches for various processes at different temporal and spatial scales. The benchmark analyses should identify clues of weak model performance to guide future development, thus enabling improved predictions of future states of ecosystems and climate. The near-future research effort should be on development of a set of widely acceptable benchmarks that can be used to objectively, effectively, and reliably evaluate fundamental properties of land models to improve their prediction performance skills.

Luo, Yiqi; Randerson, J.; Abramowitz, G.; Bacour, C.; Blyth, E.; Carvalhais, N.; Ciais, Philippe; Dalmonech, D.; Fisher, J.B.; Fisher, R.; Friedlingstein, P.; Hibbard, Kathleen A.; Hoffman, F. M.; Huntzinger, Deborah; Jones, C.; Koven, C.; Lawrence, David M.; Li, D.J.; Mahecha, M.; Niu, S.L.; Norby, Richard J.; Piao, S.L.; Qi, X.; Peylin, P.; Prentice, I.C.; Riley, William; Reichstein, M.; Schwalm, C.; Wang, Y.; Xia, J. Y.; Zaehle, S.; Zhou, X. H.

2012-10-09T23:59:59.000Z

18

Projected land-use change impacts on ecosystem services in the United States  

Science Journals Connector (OSTI)

...to a large existing literature on land-use change and ecosystem...lessons learned . Annual Review of Resource Economics 1 : 409...BA ( 2012 ) Modeling bioenergy, land use...after an exhaustive review of the literature. Lubowski et al...

Joshua J. Lawler; David J. Lewis; Erik Nelson; Andrew J. Plantinga; Stephen Polasky; John C. Withey; David P. Helmers; Sebastin Martinuzzi; Derric Pennington; Volker C. Radeloff

2014-01-01T23:59:59.000Z

19

CARBON SEQUESTRATION THROUGH CHANGES IN LAND USE IN OREGON  

E-Print Network [OSTI]

CALIFORNIA ENERGY COMMISSION CARBON SEQUESTRATION THROUGH CHANGES IN LAND USE IN OREGON: COSTS, and J. Kadyszewski (Winrock International). 2007. Carbon Sequestration Through Changes in Land Use Curves, and Pilot Actions for Terrestrial Carbon Sequestration in Oregon. Report to Winrock

20

Interaction effects of climate and land use/land cover change on soil organic carbon sequestration  

E-Print Network [OSTI]

Interaction effects of climate and land use/land cover change on soil organic carbon sequestration carbon sequestration Climate change Soil carbon change Historically, Florida soils stored the largest in Florida (FL) have acted as a sink for carbon (C) over the last 40 years. · Climate interacting with land

Grunwald, Sabine

Note: This page contains sample records for the topic "land change modeler" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Impacts of Land-use Changes on Biofuels ORNL History of Exploring Changes in Land Use in the United States  

E-Print Network [OSTI]

Impacts of Land-use Changes on Biofuels ORNL History of Exploring Changes in Land Use in the United. Building from their work on environmental costs and benefits associated with biofuel production, ORNL positively impact the sustainability of the biofuels industry. Building understanding of land-use change from

22

The impacts of land use-induced land cover change on climate extremes.  

E-Print Network [OSTI]

??Simulations from the CSIRO Mk3L climate model, coupled to the CABLE land surface model, indicate that climate extremes indices are significantly affected by land use-induced (more)

Avila, Francia Bismonte

2012-01-01T23:59:59.000Z

23

Land Use Change in theLand Use Change in the United States:United States  

E-Print Network [OSTI]

: Accommodating a Growing Biofuels Market Amelia French M.S. Candidate University of Tennessee, Knoxville. Turhollow, R.L.Graham, B.J. Stokes, and D.C. Erbach. 2005. Biomass as feedstock for a bioenergy/Demand of Biofuels? Traditional Crops Perennials Changing Markets Higher Market Values More Land Use #12

Gray, Matthew

24

Climate Impacts of Land-Cover and Land-Use Changes in Tropical Islands under Conditions of Global Climate Change  

Science Journals Connector (OSTI)

Land-cover and land-use (LCLU) changes have significant climate impacts in tropical coastal regions with the added complexity of occurring within the context of a warming climate. The individual and combined effects of these two factors in ...

Daniel E. Comarazamy; Jorge E. Gonzlez; Jeffrey C. Luvall; Douglas L. Rickman; Robert D. Bornstein

2013-03-01T23:59:59.000Z

25

Climate change and land use in Florida: Interdependencies and opportunities  

E-Print Network [OSTI]

Climate change and land use in Florida: Interdependencies and opportunities Stephen Mulkey, Ph June 2007 Revised 30 September 2007 #12;Climate change and land use ­ Report to the Century Commission - S. Mulkey, June 2007 2 Executive summary Over this century anthropogenic climate change will present

Watson, Craig A.

26

Using Land To Mitigate Climate Change: Hitting the Target, Recognizing the Trade-offs  

Science Journals Connector (OSTI)

Land can be used in several ways to mitigate climate change, but especially under changing environmental conditions there may be implications for food prices. Using an integrated global system model, we explore the roles that these land-use options can ...

John Reilly; Jerry Melillo; Yongxia Cai; David Kicklighter; Angelo Gurgel; Sergey Paltsev; Timothy Cronin; Andrei Sokolov; Adam Schlosser

2012-04-25T23:59:59.000Z

27

A framework for benchmarking land models  

E-Print Network [OSTI]

their inclu- sion in Earth system models (ESMs). State-of-land models cou- pled to Earth system models should simulateland models within Earth system models, however, can help

2012-01-01T23:59:59.000Z

28

Predicted change in global secondary organic aerosol concentrations in response to future climate, emissions, and land use change  

E-Print Network [OSTI]

The sensitivity of secondary organic aerosol (SOA) concentration to changes in climate and emissions is investigated using a coupled global atmosphere-land model driven by the year 2100 IPCC A1B scenario predictions. The ...

Heald, C. L.; Henze, D. K.; Horowitz, L. W.; Feddema, Johannes J.; Lamarque, J. F.; Guenther, A.; Hess, P. G.; Vitt, F.; Seinfeld, J. H.; Goldstein, A. H.; Fung, I.

2008-03-01T23:59:59.000Z

29

Resource Assessment and Land Use Change  

Broader source: Energy.gov (indexed) [DOE]

and third generation feedstocks 14 Greenhouse Gas Emissions of Gasoline and Alternatives Fuel Pathway Direct emissions (g CO2eMJ) Land use and other effects (g CO2eMJ) Total...

30

E-Print Network 3.0 - anthropogenic land-use change Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Global Non-Proximal Ecosystem Service Summary: Anthropogenic Land Cover Change Wetlandswater management Dams River Engineering Land use impervious surfaces... Anthropogenic land...

31

Agriculture model development to improve performance of the Community Land  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Agriculture model development to improve performance of the Community Land Agriculture model development to improve performance of the Community Land Model April 3, 2013 The important relationships between climate change and agriculture are uncertain, particularly the feedbacks related to the carbon cycle. Nevertheless, vegetation models have not yet considered the full impacts of management practices and nitrogen feedbacks on the carbon cycle. We are working to meet this need. We have integrated three crop types (corn, soybean, and spring wheat) into the Community Land Model (CLM). In developing the agriculture version of CLM, we added plant processes related to management practices and nitrogen cycling. A manuscript documenting our changes to CLM has been accepted for publication in Geoscientific Model Development Discussions ("Modeling

32

Land Cover and Land Use Change and Its Effects of Carbon Dynamics in Monsoon  

E-Print Network [OSTI]

on land directly · agriculture - food production and raising livestock · forestry - production of wood products (such as timber or paper), and biomass as an energy source LUC activities impact our environment plantations to lower albedo and reduce atmospheric CO2 #12;Land Cover Change in MAR Biome Types Jain and Yang

Jain, Atul K.

33

EA-1779: Proposed Changes to the Sanitary Biosolids Land Application  

Broader source: Energy.gov (indexed) [DOE]

79: Proposed Changes to the Sanitary Biosolids Land 79: Proposed Changes to the Sanitary Biosolids Land Application Program on the Oak Ridge Reservation, Oak Ridge, Tennessee EA-1779: Proposed Changes to the Sanitary Biosolids Land Application Program on the Oak Ridge Reservation, Oak Ridge, Tennessee Summary This EA evaluates the environmental impacts of a proposal to amend (e.g., by changing setback requirements from surface water features and potential channels to groundwater) the Sanitary Biosolids Land Application Program at the Oak Ridge Reservation in Oak Ridge, Tennessee. Base on the analyses in the EA, DOE determined that the proposed action is not a major federal action that would significantly affect the quality of the human environment within the context of NEPA, and that preparation of an environmental impact statement is not required.

34

Effect of Anthropogenic Land-Use and Land-Cover Changes on Climate and Land Carbon Storage in CMIP5 Projections for the Twenty-First Century  

Science Journals Connector (OSTI)

The effects of land-use changes on climate are assessed using specified-concentration simulations complementary to the representative concentration pathway 2.6 (RCP2.6) and RCP8.5 scenarios performed for phase 5 of the Coupled Model ...

V. Brovkin; L. Boysen; V. K. Arora; J. P. Boisier; P. Cadule; L. Chini; M. Claussen; P. Friedlingstein; V. Gayler; B. J. J. M. van den Hurk; G. C. Hurtt; C. D. Jones; E. Kato; N. de Noblet-Ducoudr; F. Pacifico; J. Pongratz; M. Weiss

2013-09-01T23:59:59.000Z

35

Global Change Biology (2000) 6, 317328 Soil Carbon Sequestration and Land-Use Change: Processes and  

E-Print Network [OSTI]

Global Change Biology (2000) 6, 317­328 Soil Carbon Sequestration and Land-Use Change: Processes in enhanced soil carbon sequestration with changes in land-use and soil management. We review literature, and indicates the relative importance of some factors that influence the rates of organic carbon sequestration

Post, Wilfred M.

36

Climatic Impacts of Land-Use Change due to Crop Yield Increases and a Universal Carbon Tax from a Scenario Model  

Science Journals Connector (OSTI)

Future land cover will have a significant impact on climate and is strongly influenced by the extent of agricultural land use. Differing assumptions of crop yield increase and carbon pricing mitigation strategies affect projected expansion of ...

T. Davies-Barnard; P. J. Valdes; J. S. Singarayer; C. D. Jones

2014-02-01T23:59:59.000Z

37

An update on land-ice modeling in the CESM  

SciTech Connect (OSTI)

Mass loss from land ice, including the Greenland and Antarctic ice sheets as well as smaller glacier and ice caps, is making a large and growing contribution to global sea-level rise. Land ice is only beginning to be incorporated in climate models. The goal of the Land Ice Working Group (LIWG) is to develop improved land-ice models and incorporate them in CESM, in order to provide useful, physically-based sea-level predictions. LJWG efforts to date have led to the inclusion of a dynamic ice-sheet model (the Glimmer Community Ice Sheet Model, or Glimmer-CISM) in the Community Earth System Model (CESM), which was released in June 2010. CESM also includes a new surface-mass-balance scheme for ice sheets in the Community Land Model. Initial modeling efforts are focused on the Greenland ice sheet. Preliminary results are promising. In particular, the simulated surface mass balance for Greenland is in good agreement with observations and regional model results. The current model, however, has significant limitations: The land-ice coupling is one-way; we are using a serial version of Glimmer-CISM with the shallow-ice approximation; and there is no ice-ocean coupling. During the next year we plan to implement two-way coupling (including ice-ocean coupling with a dynamic Antarctic ice sheet) with a parallel , higher-order version of Glimmer-CISM. We will also add parameterizations of small glaciers and ice caps. With these model improvements, CESM will be able to simulate all the major contributors to 21st century global sea-level rise. Results of the first round of simulations should be available in time to be included in the Fifth Assessment Report (ARS) of the Intergovernmental Panel on Climate Change.

Lipscomb, William H [Los Alamos National Laboratory

2011-01-18T23:59:59.000Z

38

Synthesis in land change science: methodological patterns, challenges, and guidelines  

E-Print Network [OSTI]

REVIEW Synthesis in land change science: methodological patterns, challenges, and guidelines of synthesis methods in LCS and assess the current state of synthetic research based on a meta-analysis of synthesis studies from 1995 to 2012. Publication of synthesis research is accel- erating, with a clear trend

Ellis, Erle C.

39

Evaluation of land use/land cover datasets for urban watershed modeling  

SciTech Connect (OSTI)

Land use/land cover (LULC) data are a vital component for nonpoint source pollution modeling. Most watershed hydrology and pollutant loading models use, in some capacity, LULC information to generate runoff and pollutant loading estimates. Simple equation methods predict runoff and pollutant loads using runoff coefficients or pollutant export coefficients that are often correlated to LULC type. Complex models use input variables and parameters to represent watershed characteristics and pollutant buildup and washoff rates as a function of LULC type. Whether using simple or complex models an accurate LULC dataset with an appropriate spatial resolution and level of detail is paramount for reliable predictions. The study presented in this paper compared and evaluated several LULC dataset sources for application in urban environmental modeling. The commonly used USGS LULC datasets have coarser spatial resolution and lower levels of classification than other LULC datasets. In addition, the USGS datasets do not accurately represent the land use in areas that have undergone significant land use change during the past two decades. We performed a watershed modeling analysis of three urban catchments in Los Angeles, California, USA to investigate the relative difference in average annual runoff volumes and total suspended solids (TSS) loads when using the USGS LULC dataset versus using a more detailed and current LULC dataset. When the two LULC datasets were aggregated to the same land use categories, the relative differences in predicted average annual runoff volumes and TSS loads from the three catchments were 8 to 14% and 13 to 40%, respectively. The relative differences did not have a predictable relationship with catchment size.

Burian, S. J. (Steven J.); Brown, M. J. (Michael J.); McPherson, T. N. (Timothy N.)

2001-01-01T23:59:59.000Z

40

Attributing land-use change carbon emissions to exported biomass  

SciTech Connect (OSTI)

In this study, a simple, transparent and robust method is developed in which land-use change (LUC) emissions are retrospectively attributed to exported biomass products based on the agricultural area occupied for the production. LUC emissions account for approximately one-fifth of current greenhouse gas emissions. Increasing agricultural exports are becoming an important driver of deforestation. Brazil and Indonesia are used as case studies due to their significant deforestation in recent years. According to our study, in 2007, approximately 32% and 15% of the total agricultural land harvested and LUC emissions in Brazil and Indonesia respectively were due to exports. The most important exported single items with regard to deforestation were palm oil for Indonesia and bovine meat for Brazil. To reduce greenhouse gas (GHG) emissions effectively worldwide, leakage of emissions should be avoided. This can be done, for example, by attributing embodied LUC emissions to exported biomass products. With the approach developed in this study, controversial attribution between direct and indirect LUC and amortization of emissions over the product life cycle can be overcome, as the method operates on an average basis and annual level. The approach could be considered in the context of the UNFCCC climate policy instead of, or alongside with, other instruments aimed at reducing deforestation. However, the quality of the data should be improved and some methodological issues, such as the allocation procedure in multiproduct systems and the possible dilution effect through third parties not committed to emission reduction targets, should be considered. - Highlights: Black-Right-Pointing-Pointer CO{sub 2} emissions from land use changes are highly important. Black-Right-Pointing-Pointer Attribution of land use changes for products is difficult. Black-Right-Pointing-Pointer Simple and robust method is developed to attribute land use change emissions.

Saikku, Laura, E-mail: laura.saikku@helsinki.fi [University of Helsinki, P.O Box 65, 00014 University of Helsinki (Finland); Soimakallio, Sampo, E-mail: sampo.soimakallio@vtt.fi [VTT Technical Research Centre of Finland, P.O. Box 1000, 02044 VTT (Finland); Pingoud, Kim, E-mail: kim.pingoud@vtt.fi [VTT Technical Research Centre of Finland, P.O. Box 1000, 02044 VTT (Finland)

2012-11-15T23:59:59.000Z

Note: This page contains sample records for the topic "land change modeler" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

Evolution of land distribution in West Bengal 19672004: Role of land reform and demographic changes  

Science Journals Connector (OSTI)

Abstract This paper studies how land reform and population growth affect land inequality and landlessness, focusing particularly on indirect effects owing to their influence on household divisions and land market transactions. Theoretical predictions of a model of household division and land transactions are successfully tested using household panel data from West Bengal spanning 19672004. The tenancy reform lowered inequality through its effects on household divisions and land market transactions, but its effect was quantitatively dominated by inequality-raising effects of population growth. The land distribution program lowered landlessness but this was partly offset by targeting failures and induced increases in immigration.

Pranab Bardhan; Michael Luca; Dilip Mookherjee; Francisco Pino

2014-01-01T23:59:59.000Z

42

Modeling of pool spreading of LNG on land  

Science Journals Connector (OSTI)

Abstract This paper presents a source term model for estimating the rate of spreading of LNG and other cryogenic mixtures on unconfined land. The model takes into account the composition changes of a boiling mixture, the varying thermodynamic properties due to preferential boiling within the mixture and the effect of the various boiling regimes on conductive heat transfer. A sensitivity analysis is conducted to determine the relative effect of each of these phenomena on pool spread. The model is applied to continuous and instantaneous spills. The model is compared to literature experimental data on cryogenic pool spreading.

Omar Basha; Tomasz Olewski; Luc Vchot; Marcelo Castier; Sam Mannan

2014-01-01T23:59:59.000Z

43

INCORPORATING NATURAL VARIATION INTO TIME SERIES-BASED LAND COVER CHANGE IDENTIFICATION  

E-Print Network [OSTI]

INCORPORATING NATURAL VARIATION INTO TIME SERIES-BASED LAND COVER CHANGE IDENTIFICATION VARUN in forests. The bulk of work in identifying land cover changes using remote sensing data involves image

Minnesota, University of

44

2000): Soil carbon sequestration and land-use change: processes and potential  

E-Print Network [OSTI]

matter dynamics that may result in enhanced soil carbon sequestration with changes in land-use and soil

W. M. Post; K. C. Kwon

45

Baselines For Land-Use Change In The Tropics: Application ToAvoided Deforestation Projects  

SciTech Connect (OSTI)

Although forest conservation activities particularly in thetropics offer significant potential for mitigating carbon emissions,these types of activities have faced obstacles in the policy arena causedby the difficulty in determining key elements of the project cycle,particularly the baseline. A baseline for forest conservation has twomain components: the projected land-use change and the correspondingcarbon stocks in the applicable pools such as vegetation, detritus,products and soil, with land-use change being the most difficult toaddress analytically. In this paper we focus on developing and comparingthree models, ranging from relatively simple extrapolations of pasttrends in land use based on simple drivers such as population growth tomore complex extrapolations of past trends using spatially explicitmodels of land-use change driven by biophysical and socioeconomicfactors. The three models of the latter category used in the analysis atregional scale are The Forest Area Change (FAC) model, the Land Use andCarbon Sequestration (LUCS) model, and the Geographical Modeling (GEOMOD)model. The models were used to project deforestation in six tropicalregions that featured different ecological and socioeconomic conditions,population dynamics, and uses of the land: (1) northern Belize; (2) SantaCruz State, Bolivia; (3) Parana State in Brazil; (4) Campeche, Mexico;(5) Chiapas, Mexico; and (6) Michoacan, Mexico. A comparison of all modeloutputs across all six regions shows that each model produced quitedifferent deforestation baseline. In general, the simplest FAC model,applied at the national administrative-unit scale, projected the highestamount of forest loss (four out of six) and the LUCS model the leastamount of loss (four out of five). Based on simulations of GEOMOD, wefound that readily observable physical and biological factors as well asdistance to areas of past disturbance were each about twice as importantas either sociological/demographic or economic/infrastructure factors(less observable) in explaining empirical land-use patterns. We proposefrom the lessons learned, a methodology comprised of three main steps andsix tasks can be used to begin developing credible baselines. We alsopropose that the baselines be projected over a 10-year period because,although projections beyond 10 years are feasible, they are likely to beunrealistic for policy purposes. In the first step, an historic land-usechange and deforestation estimate is made by determining the analyticdomain (size of the region relative to the size of proposed project),obtaining historic data, analyzing candidate historic baseline drivers,and identifying three to four major drivers. In the second step, abaseline of where deforestation is likely to occur --a potential land-usechange (PLUC) map is produced using a spatial model such as GEOMOD thatuses the key drivers from step one. Then rates of deforestation areprojected over a 10-year baseline period using any of the three models.Using the PLUC maps, projected rates of deforestation, and carbon stockestimates, baselineprojections are developed that can be used for projectGHG accounting and crediting purposes: The final step proposes that, atagreed interval (eg, +10 years), the baseline assumptions about baselinedrivers be re-assessed. This step reviews the viability of the 10-yearbaseline in light of changes in one or more key baseline drivers (e.g.,new roads, new communities, new protected area, etc.). The potentialland-use change map and estimates of rates of deforestation could beredone at the agreed interval, allowing the rates and changes in spatialdrivers to be incorporated into a defense of the existing baseline, orderivation of a new baseline projection.

Brown, Sandra; Hall, Myrna; Andrasko, Ken; Ruiz, Fernando; Marzoli, Walter; Guerrero, Gabriela; Masera, Omar; Dushku, Aaron; Dejong,Ben; Cornell, Joseph

2007-06-01T23:59:59.000Z

46

Carbon Calculator for Land Use Change from Biofuels Production (CCLUB). Users' manual and technical documentation.  

SciTech Connect (OSTI)

The Carbon Calculator for Land Use Change from Biofuels Production (CCLUB) calculates carbon emissions from land use change (LUC) for four different ethanol production pathways including corn grain ethanol and cellulosic ethanol from corn stover, miscanthus, and switchgrass. This document discusses the version of CCLUB released May 31, 2012 which includes corn, as did the previous CCLUB version, and three cellulosic feedstocks: corn stover, miscanthus, and switchgrass. CCLUB calculations are based upon two data sets: land change areas and above- and below-ground carbon content. Table 1 identifies where these data are stored and used within the CCLUB model, which is built in MS Excel. Land change area data is from Purdue University's Global Trade Analysis Project (GTAP) model, a computable general equilibrium (CGE) economic model. Section 2 describes the GTAP data CCLUB uses and how these data were modified to reflect shrubland transitions. Feedstock- and spatially-explicit below-ground carbon content data for the United States were generated with a surrogate model for CENTURY's soil organic carbon sub-model (Kwon and Hudson 2010) as described in Section 3. CENTURY is a soil organic matter model developed by Parton et al. (1987). The previous CCLUB version used more coarse domestic carbon emission factors. Above-ground non-soil carbon content data for forest ecosystems was sourced from the USDA/NCIAS Carbon Online Estimator (COLE) as explained in Section 4. We discuss emission factors used for calculation of international greenhouse gas (GHG) emissions in Section 5. Temporal issues associated with modeling LUC emissions are the topic of Section 6. Finally, in Section 7 we provide a step-by-step guide to using CCLUB and obtaining results.

Mueller, S; Dunn, JB; Wang, M (Energy Systems); (Univ. of Illinois at Chicago)

2012-06-07T23:59:59.000Z

47

Climate Change Mitigation Through Land-Use Measures in the Agriculture and  

Open Energy Info (EERE)

Climate Change Mitigation Through Land-Use Measures in the Agriculture and Climate Change Mitigation Through Land-Use Measures in the Agriculture and Forestry Sectors Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Climate Change Mitigation Through Land-Use Measures in the Agriculture and Forestry Sectors Agency/Company /Organization: International Institute for Sustainable Development (IISD) Sector: Energy, Land, Climate Focus Area: Forestry, Agriculture Topics: Policies/deployment programs Resource Type: Publications Website: www.iisd.org/pdf/2009/climate_change_mitigation_land_use.pdf References: Climate Change Mitigation Through Land-Use Measures in the Agriculture and Forestry Sectors[1] Overview "This paper reviews the status of the post-2012 negotiations on climate change mitigation through land-use measures in the agriculture and forestry

48

Bioenergy crop productivity and potential climate change mitigation from marginal lands in the United States: An  

E-Print Network [OSTI]

Bioenergy crop productivity and potential climate change mitigation from marginal lands bioenergy crops grown on marginal lands in the United States. Two broadly tested cellulosic crops June 2014 Introduction Bioenergy, an important renewable energy produced from biological materials

Zhuang, Qianlai

49

The Relationship between Land Use and Temperature Change in Dallas County, Texas  

E-Print Network [OSTI]

This study examines the relationship between land use and temperature change in Dallas County, TX. The purpose of this research is to analyze the relationship between temperature and land use and to identify the primary factors contributing...

Kim, Hee Ju

2010-10-12T23:59:59.000Z

50

Relationships among land ownership, land use, and landowner behavior changes in Gillespie and Washington Counties, Texas  

E-Print Network [OSTI]

The recent trend of land parcelization and habitat fragmentation has prompted concern among scientists. This concern has led to studies exploring the causes and effects of both events, but has not targeted the owners of land as participants in all...

Steinbach, Mark Shane

2012-06-07T23:59:59.000Z

51

Land use change and carbon exchange in the tropics. I. Detailed estimates for Costa Rice, Panama, Peru, and Bolivia  

SciTech Connect (OSTI)

This group, composed of modelers working in conjunction with tropical ecologists, has produced a simulation model that quantifies the net carbon exchange between tropical vegetation and the atmosphere due to land use change. The model calculates this net exchange by combining estimates of land use change with several estimates of the carbon stored in tropical vegetation and general assumptions about the fate of cleared vegetation. In this report, the authors use estimates of land use and carbon of land use and carbon storage organized into six life zone (sensu Holdridge) categories to calculate the exchange between the atmosphere and the vegetation of four tropical countries. Their analyses of these countries indicate that this life zone approach has several advantages because (a) the carbon content of vegetation varies significantly among life zones, (b) much of the land use change occurs in life zones of only moderate carbon storage, and (c) the fate of cleared vegetation varies among life zones. Their analyses also emphasize the importance of distinguishing between temporary and permanent land use change, as the recovery of vegetation on abandoned areas decreases the net release of carbon due to clearing. They include sensitivity analysis of those factors that they found to be important but are difficult to quantify at present.

Hall, C.A.S.; Detwiler, R.P.; Bogdonoff, P.; Underhill, S.

1985-01-01T23:59:59.000Z

52

Semiarid unsaturated zone chloride profiles: Archives of past land use change impacts on water resources in the southern High Plains,  

E-Print Network [OSTI]

) was quantified using chloride mass balance calculations. The timing of land use change was estimated using

Scanlon, Bridget R.

53

Applying consequential LCA to support energy policy: Land use change effects of bioenergy production  

Science Journals Connector (OSTI)

Abstract Luxembourg aims at complying with the EU objective of attaining a 14% use of bioenergy in the national grid by 2020. The increase of biomethane production from energy crops could be a valuable option in achieving this objective. However, the overall environmental benefit of such option is yet to be proven. Consequential Life Cycle Assessment (CLCA) has shown to be a useful tool to evaluate the environmental suitability of future energy scenarios and policies. The objective of this study was, therefore, to evaluate the environmental consequences of modifying the Luxembourgish agricultural system to increase maize production for biomethane generation. A total of 10 different scenarios were modelled using a partial equilibrium (PE) model to identify changes in land cultivation based on farmers' revenue maximisation, which were then compared to the baseline scenario, i.e. the state of the agricultural sector in 2009. The results were divided into three different consequential decision contexts, presenting differing patterns in terms of land use changes (LUCs) but with minor shifts in environmental impacts. Nevertheless, energy from maize production would imply substantially higher environmental impacts when compared with the current use of natural gas, mainly due to increases in climate change and agricultural land occupation impacts. The results are discussed based on the consequences they may generate on the bioenergy policy, the management of arable land, the changes in importexport flows in Luxembourg and \\{LUCs\\} in the domestic agricultural system. In addition, the specific PE+LCA method presented intends to be of use for other regional studies in which a high level of site-specific data is available.

Ian Vzquez-Rowe; Antonino Marvuglia; Sameer Rege; Enrico Benetto

2014-01-01T23:59:59.000Z

54

Land use change emissions from oil palm expansion in Par, Brazil depend on proper policy enforcement on deforested lands  

Science Journals Connector (OSTI)

Brazil aims to increase palm oil production to meet the growing national and global demand for edible oil and biodiesel while preserving environmentally and culturally significant areas. As land use change (LUC) is the result of complex interactions between socio-economic and biophysical drivers operating at multiple temporal and spatial scales, the type and location of LUC depend on drivers such as neighboring land use, conversion elasticity, access to infrastructure, distance to markets, and land suitability. The purpose of this study is to develop scenarios to measure the impact of land conversion under three different enforcement scenarios (none, some, and strict enforcement). We found that converting 22.5 million hectares of land can produce approximately 29 billion gallons (110 billion liters) of biodiesel a year. Of that, 2271% of the area can come from forest land, conservation units, wetland and indigenous areas, emitting 1484gCO2eMJ?1. This direct land use emission alone can be higher than the carbon intensity of diesel that it intends to displace for lowering greenhouse gas emissions. This letter focuses narrowly on GHG emissions and does not address socio-economicecological prospects for these degraded lands for palm oil or for other purposes. Future studies should carefully evaluate these tradeoffs.

Sahoko Yui; Sonia Yeh

2013-01-01T23:59:59.000Z

55

Climate Change Mitigation Through Land-Use Measures in the Agriculture...  

Open Energy Info (EERE)

and Forestry Sectors Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Climate Change Mitigation Through Land-Use Measures in the Agriculture and Forestry...

56

A Global Land System Framework for Integrated Climate-Change Assessments  

E-Print Network [OSTI]

Land ecosystems play a major role in the global cycles of energy, water, carbon and nutrients. A Global Land System (GLS) framework has been developed for the Integrated Global Systems Model Version 2 (IGSM2) to simulate ...

Schlosser, C. Adam

57

Supply of carbon sequestration and biodiversity services from Australia's agricultural land under global change  

Science Journals Connector (OSTI)

Abstract Global agroecosystems can contribute to both climate change mitigation and biodiversity conservation, and market mechanisms provide a highly prospective means of achieving these outcomes. However, the ability of markets to motivate the supply of carbon sequestration and biodiversity services from agricultural land is uncertain, especially given the future changes in environmental, economic, and social drivers. We quantified the potential supply of these services from the intensive agricultural land of Australia from 2013 to 2050 under four global outlooks in response to a carbon price and biodiversity payment scheme. Each global outlook specified emissions pathways, climate, food demand, energy price, and carbon price modeled using the Global Integrated Assessment Model (GIAM). Using a simplified version of the Land Use Trade-Offs (LUTO) model, economic returns to agriculture, carbon plantings, and environmental plantings were calculated each year. The supply of carbon sequestration and biodiversity services was then quantified given potential land use change under each global outlook, and the sensitivity of the results to key parameters was assessed. We found that carbon supply curves were similar across global outlooks. Sharp increases in carbon sequestration supply occurred at carbon prices exceeding 50$tCO2?1 in 2015 and exceeding 65$tCO2?1 in 2050. Based on GIAM-modeled carbon prices, little carbon sequestration was expected at 2015 under any global outlook. However, at 2050 expected carbon supply under each outlook differed markedly, ranging from 0 to 189MtCO2yr?1. Biodiversity services of 3.32% of the maximum may be achieved in 2050 for a 1$B investment under median scenario settings. We conclude that a carbon market can motivate supply of substantial carbon sequestration but only modest amounts of biodiversity services from agricultural land. A complementary biodiversity payment can synergistically increase the supply of biodiversity services but will not provide much additional carbon sequestration. The results were sensitive to global drivers, especially the carbon price, and the domestic drivers of adoption hurdle rate and agricultural productivity. The results can inform the design of an effective national policy and institutional portfolio addressing the dual objectives of climate change and biodiversity conservation that is robust to future uncertainty in both national and global drivers.

B.A. Bryan; M. Nolan; T.D. Harwood; J.D. Connor; J. Navarro-Garcia; D. King; D.M. Summers; D. Newth; Y. Cai; N. Grigg; I. Harman; N.D. Crossman; M.J. Grundy; J.J. Finnigan; S. Ferrier; K.J. Williams; K.A. Wilson; E.A. Law; S. Hatfield-Dodds

2014-01-01T23:59:59.000Z

58

Greenhouse Gas Emissions and Land Use Change from Jatropha Curcas-Based Jet Fuel in Brazil  

Science Journals Connector (OSTI)

Greenhouse Gas Emissions and Land Use Change from Jatropha Curcas-Based Jet Fuel in Brazil ... Life cycle GHG emissions of biojet fuel derived from Jatropha curcas is quantified based on empirical data from Brazilian producers accounting for land-use change. ... This is the methodology adopted by the European Community in its current Renewable Energy Directive (40). ...

Robert E. Bailis; Jennifer E. Baka

2010-10-26T23:59:59.000Z

59

Soil carbon sequestration and land-use change: processes and potential  

E-Print Network [OSTI]

Soil carbon sequestration and land-use change: processes and potential W . M . P O S T * and K . C that may result in enhanced soil carbon sequestration with changes in land-use and soil management. We carbon accumulation. This data summary provides a guide to approximate rates of SOC sequestration

60

Impact of land use change on a hydro-meteorological event in Kampala, Uganda  

E-Print Network [OSTI]

Impact of land use change on a hydro-meteorological event in Kampala, Uganda Problem statement Kampala is the capital city of Uganda on the northern shores of Lake Victoria. Here, future climate change

Jetten, Victor

Note: This page contains sample records for the topic "land change modeler" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

Impact of land use change on the local climate over the Tibetan Plateau  

SciTech Connect (OSTI)

Observational data show that the remotely sensed leaf area index (LAI) has a significant downward trend over the east Tibetan Plateau (TP), while a warming trend is found in the same area. Further analysis indicates that this warming trend mainly results from the nighttime warming. The Single-Column Atmosphere Model (SCAM) version 3.1 developed by the National Center for Atmospheric Research is used to investigate the role of land use change in the TP local climate system and isolate the contribution of land use change to the warming. Two sets of SCAM simulations were performed at the Xinghai station that is located near the center of the TP Sanjiang (three rivers) Nature Reserve where the downward LAI trend is largest. These simulations were forced with the high and low LAIs. The modeling results indicate that, when the LAI changes from high to low, the daytime temperature has a slight decrease, while the nighttime temperature increases significantly, which is consistent with the observations. The modeling results further show that the lower surface roughness length plays a significant role in affecting the nighttime temperature increase.

Jin, J.; Lu, S.; Li, S.; Miller, N.L.

2010-04-01T23:59:59.000Z

62

Characterizing the Impact of Land Use and Land Cover Change on Freshwater Inflows  

E-Print Network [OSTI]

in mean annual and winter precipitation. Analyses of Landsat images of the watershed using an unsupervised classification method showed an increase in forest, urban and irrigated land by 13, 42 and 7%, respectively, from 1987 to 2002. Urbanized areas were...

Ferijal, Teuku

2009-05-15T23:59:59.000Z

63

Evaluating runoff simulations from the Community Land Model 4.0 using observations from flux towers and a mountainous watershed  

E-Print Network [OSTI]

Land Model (CLM) is the land component within the Community Earth System Model (CESM) (formerly known earth system model b

64

EA-1042: Proposed Changes to the Sanitary Sludge Land Application Program  

Broader source: Energy.gov (indexed) [DOE]

042: Proposed Changes to the Sanitary Sludge Land Application 042: Proposed Changes to the Sanitary Sludge Land Application Program on the Oak Ridge Reservation, Oak Ridge, Tennesee EA-1042: Proposed Changes to the Sanitary Sludge Land Application Program on the Oak Ridge Reservation, Oak Ridge, Tennesee SUMMARY This EA evaluates the environmental impacts of the proposal to raise the sludge land application loading limits from the current, self-imposed conservative 48 metric tons/ha lifetime loading to the U.S. Environmental Protection Agency-approved and Tennessee Department of Environment and Conservation-permitted level of 110 metric tons/ha. The U.S. Department of Energy's Oak Ridge National Laboratory also proposes to add its K-25 Site pretreated sewage sludge to the existing sewage sludge land application program on the Oak Ridge Reservation in Oak Ridge, Tennessee.

65

Quantifying the impact of future land-use changes against increases in GHG concentrations  

E-Print Network [OSTI]

Quantifying the impact of future land-use changes against increases in GHG concentrations A changes relative to the increase in greenhouse gas (GHG) concentrations is assessed in time-slice simula of vegetation change to GHG concentration increase is of the order of 10% for a B2 scenario, and can reach 30

Paris-Sud XI, Université de

66

EA-1936: Proposed Changes to Parcel ED-1 Land Uses, Utility Infrastructure,  

Broader source: Energy.gov (indexed) [DOE]

6: Proposed Changes to Parcel ED-1 Land Uses, Utility 6: Proposed Changes to Parcel ED-1 Land Uses, Utility Infrastructure, and Natural Area Management Responsibility, Oak Ridge, Tennessee EA-1936: Proposed Changes to Parcel ED-1 Land Uses, Utility Infrastructure, and Natural Area Management Responsibility, Oak Ridge, Tennessee SUMMARY NOTE: This EA has been cancelled. This EA will evaluate the environmental impacts of DOE's proposed modifications to the allowable land uses, utility infrastructure, and Natural Area management responsibility for Parcel ED-1. The purpose of the modifications is to enhance the development potential of the Horizon Center business/industrial park, while ensuring protection of the adjacent Natural Area. The area addressed by the proposed action was evaluated for various industrial/business uses in the

67

ModelingLandBiogeochemistry Term Spring 2014  

E-Print Network [OSTI]

of Earth system models and serve to represent exchange of energy (heat radiation momentum), water, carbon

Ma, Lena

68

Land Processes in a High Resolution Community Climate Model with Sub-Grid Scale Parameterizations Final Report  

SciTech Connect (OSTI)

The characteristics of land important for climate are very heterogeneous, as are the key atmospheric inputs to land, i.e. precipitation and radiation. To adequately represent this heterogeneity, state-of-the-art climate models should represent atmospheric inputs to land, land properties, and the dynamical changes of land at the highest resolution accessible by climate models. The research funded under this project focused on the development of an alternative approach to this problem in which a sub-mesh is imposed on each atmospheric model grid square. This allows representation of the land climate dynamics at a higher resolution than that achievable in the global atmospheric models. The high spatial detail of the fine-mesh treatment provides not only a more accurate representation of land processes to the atmospheric model, but also the opportunity for direct downscaling of the surface climate. The proposed project continued the development and refinement of a high-resolution land surface model that is compatible for inclusion into the National Center for Atmospheric Research (NCAR) Community Climate Model (CCM), a state-of-the-art atmospheric general circulation model (GCM) that is used for climate simulation and prediction.

R. E. Dickinson; Andrea N. Hahmann

2002-07-17T23:59:59.000Z

69

From land use to land cover: Restoring the afforestation signal in a coupled integrated assessment - earth system model and the implications for CMIP5 RCP simulations  

SciTech Connect (OSTI)

Climate projections depend on scenarios of fossil fuel emissions and land use change, and the IPCC AR5 parallel process assumes consistent climate scenarios across Integrated Assessment and Earth System Models (IAMs and ESMs). To facilitate consistency, CMIP5 used a novel land use harmonization to provide ESMs with seamless, 1500-2100 land use trajectories generated by historical data and four IAMs. However, we have identified and partially addressed a major gap in the CMIP5 land coupling design. The CMIP5 Community ESM (CESM) global afforestation is only 22% of RCP4.5 afforestation from 2005 to 2100. Likewise, only 17% of the Global Change Assessment Models (GCAMs) 2040 RCP4.5 afforestation signal, and none of the pasture loss, were transmitted to CESM within a newly integrated model. This is a critical problem because afforestation is necessary for achieving the RCP4.5 climate stabilization. We attempted to rectify this problem by modifying only the ESM component of the integrated model, enabling CESM to simulate 66% of GCAMs afforestation in 2040, and 94% of GCAMs pasture loss as grassland and shrubland losses. This additional afforestation increases vegetation carbon gain by 19 PgC and decreases atmospheric CO2 gain by 8 ppmv from 2005 to 2040, implying different climate scenarios between CMIP5 GCAM and CESM. Similar inconsistencies likely exist in other CMIP5 model results, primarily because land cover information is not shared between models, with possible contributions from afforestation exceeding model-specific, potentially viable forest area. Further work to harmonize land cover among models will be required to adequately rectify this problem.

Di Vittorio, Alan; Chini, Louise M.; Bond-Lamberty, Benjamin; Mao, Jiafu; Shi, Xiaoying; Truesdale, John E.; Craig, Anthony P.; Calvin, Katherine V.; Jones, Andrew D.; Collins, William D.; Edmonds, James A.; Hurtt, George; Thornton, Peter E.; Thomson, Allison M.

2014-11-27T23:59:59.000Z

70

The role of public participation in encouraging changes in rural land use to reduce flood risk  

Science Journals Connector (OSTI)

Abstract Changes in rural land use to reduce flood risk are encouraged by governments in many countries, but they may face considerable opposition by land managers. Local participative processes are thought to help overcome opposition. This article presents an evaluation of an intensive participative process set up between land managers and governmental agencies following two severe floods in the transboundary BowmontGlen catchment in Scotland and England. A combination of interviews and documentary analysis is used. The research demonstrates that the participative process contributed to greater uptake of rural land use change and improved compliance with existing environmental policies. There were nevertheless low levels of social learning amongst participants. Two institutional designs for improving policy implementation are presented.

J.J. Rouillard; A.D. Reeves; K.V. Heal; T. Ball

2014-01-01T23:59:59.000Z

71

Integrated Assessment Modeling of Carbon Sequestration and Land Use Emissions Using Detailed Model Results and Observations  

SciTech Connect (OSTI)

This report outlines the progress on the development and application of Integrated Assessment Modeling of Carbon Sequestrations and Land Use Emissions supported by the DOE Office of Biological and Environmental Research (OBER), U.S. Department of Energy, Grant No. DOE-DE-FG02-01ER63069. The overall objective of this collaborative project between the University of Illinois at Urbana-Champaign (UIUC), Oak Ridge National Laboratory (ORNL), Lawrence Livermore National Laboratory (LLNL), and Pacific Northwest National Laboratory (PNNL) was to unite the latest advances in carbon cycle research with scientifically based models and policy-related integrated assessment tools that incorporate computationally efficient representations of the latest knowledge concerning science and emission trajectories, and their policy implications. As part of this research we accomplished the following tasks that we originally proposed: (1) In coordination with LLNL and ORNL, we enhanced the Integrated Science Assessment Model's (ISAM) parametric representation of the ocean and terrestrial carbon cycles that better represent spatial and seasonal variations, which are important to study the mechanisms that influence carbon sequestration in the ocean and terrestrial ecosystems; (2) Using the MiniCAM modeling capability, we revised the SRES (IPCC Special Report on Emission Scenarios; IPCC, 2000) land use emission scenarios; and (3) On the application front, the enhanced version of ISAM modeling capability is applied to understand how short- and long-term natural carbon fluxes, carbon sequestration, and human emissions contribute to the net global emissions (concentrations) trajectories required to reach various concentration (emission) targets. Under this grant, 21 research publications were produced. In addition, this grant supported a number of graduate and undergraduate students whose fundamental research was to learn a disciplinary field in climate change (e.g., ecological dynamics and ocean circulations) and then complete research on how this field could be linked to the other factors we need to consider in its dynamics (e.g., land use, ocean and terrestrial carbon sequestration and climate change).

Dr. Atul Jain

2005-04-17T23:59:59.000Z

72

Projected land-use change impacts on ecosystem services in the United States  

Science Journals Connector (OSTI)

...McCarl BA ( 2012 ) Modeling bioenergy, land use, and GHG...selected after an exhaustive review of the literature. Lubowski et al. (1) discuss...are found in similar physical environments and are influenced by similar...

Joshua J. Lawler; David J. Lewis; Erik Nelson; Andrew J. Plantinga; Stephen Polasky; John C. Withey; David P. Helmers; Sebastin Martinuzzi; Derric Pennington; Volker C. Radeloff

2014-01-01T23:59:59.000Z

73

Development of a remotely sensed, historical land-cover change database for rural Chihuahua, Mexico  

Science Journals Connector (OSTI)

The purpose of this article is to describe the development of a remotely sensed, historical land-cover change database for the northwestern quarter of Chihuahua, Mexico, The database consists of multi-temporal land-cover classifications and change detection images. The database is developed to facilitate future investigations that examine urbanrural linkages as possible drivers of rural land-use and land-cover changes. To develop the needed land-cover change database, this study uses the North American Landsat Characterization (NALC) MSS triplicates because of their temporal depth and spatial breadth. Challenges exist, however, to effective classification and change detection using the NALC triplicates, including illumination differences across multiple scenes and periods caused by topographic and solar variations and the lack of ground reference data for historic periods. Therefore, creation of the database is a four step process. First, extensive pre-processing is performed to enhance comparability of multi-date images. Pre-processing includes topographic correction, mosaic creation and multi-date radiance normalization. Second, ancillary sources of land-cover data are combined with visual interpretations of enhanced images to define reference pixels used to classify the images using the maximum likelihood algorithm. Third, classification accuracy is assessed. Fourth, post-classification change detection is performed. Results indicate significant image improvements after pre-processing that permit very good overall classification (86.26% classified correctly) and change detection. To conclude, findings are presented that indicate significant changes to arid grasslands/shrublands and forest resources in mountainous regions.

Nate Currit

2005-01-01T23:59:59.000Z

74

CARBON FLUX TO THE ATMOSPHERE FROM LAND-USE CHANGES: 1850 TO 1990 (APPENDIX  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

B: REGIONAL LAND-USE CHANGE AND WOOD HARVEST DATA B: REGIONAL LAND-USE CHANGE AND WOOD HARVEST DATA The following listing provides the regional details of fuelwood (nonindustrial logging) and timber (industrial logging) harvest by forest type, changes in area of pasture, forest plantation, afforestation, forest clearing for croplands, and lands in shifting cultivation. The values in this listing replace the values in the indicated ascii and binary spreadsheet files in Houghton and Hackler (1995), the previous version of this database. South and Southeast Asia The following values replace the data in files asia-rat.* in Houghton and Hackler (1995). South and Southeast Asia Fuelwood Harvest (10^6 Mg C per year): Tropical Tropical Tropical moist seasonal open Year forest forest forest 1751 8.58 10.50 4.50

75

Refining Landscape Change Models through Outlier Analysis in the  

E-Print Network [OSTI]

Refining Landscape Change Models through Outlier Analysis in the Muskegon Watershed of Michigan significantly to the state economy, accounting for nearly 20% of its economic output (Michigan Land Use, 1965; Lee, 1973; Wegener, 1994), and model refinement/advancement, in large part due to advances

Walker, Robert T.

76

Water security, global change and landatmosphere feedbacks  

Science Journals Connector (OSTI)

...on a 0.5 grid [28...fraction of the renewable flow of the...physically based energy balance models...Grand Science Challenges-covering...enhanced integration of models...e.g. national parks. Using...food and energy security...grand_challenges_7-2012...tile and grid box mean...

2013-01-01T23:59:59.000Z

77

Land-use change and greenhouse gas emissions from corn and cellulosic  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Science Science Computing, Environment & Life Sciences Energy Engineering & Systems Analysis Photon Sciences Physical Sciences & Engineering Energy Frontier Research Centers Science Highlights Postdoctoral Researchers Land-use change and greenhouse gas emissions from corn and cellulosic ethanol July 16, 2013 Tweet EmailPrint The greenhouse gas (GHG) emissions that may accompany land-use change (LUC) from increased biofuel feedstock production are a source of debate in the discussion of drawbacks and advantages of biofuels. Estimates of LUC GHG emissions focus mainly on corn ethanol and vary widely. Increasing the understanding of LUC GHG impacts associated with both corn and cellulosic ethanol will inform the on-going debate concerning their magnitudes and

78

Changes in ecosystem services and runoff due to land use change in the watersheds of San Antonio, Texas  

E-Print Network [OSTI]

services. Barbier (1994) identified wetland ecosystem services as prevention of storm damage, flood and water flow control, support of fisheries, nutrient and waste absorption, recreation and water transport, agriculture, wildlife products, wood products...CHANGES IN ECOSYSTEM SERVICES AND RUNOFF DUE TO LAND USE CHANGE IN THE WATERSHEDS OF SAN ANTONIO, TEXAS A Thesis by HEATHER GRACE HARRIS Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment...

Harris, Heather Grace

2000-01-01T23:59:59.000Z

79

Impact of Agricultural Practice on Regional Climate in a CoupledLand Surface Mesoscale Model  

SciTech Connect (OSTI)

The land surface has been shown to form strong feedbacks with climate due to linkages between atmospheric conditions and terrestrial ecosystem exchanges of energy, momentum, water, and trace gases. Although often ignored in modeling studies, land management itself may form significant feedbacks. Because crops are harvested earlier under drier conditions, regional air temperature, precipitation, and soil moisture, for example, affect harvest timing, particularly of rain-fed crops. This removal of vegetation alters the land surface characteristics and may, in turn, affect regional climate. We applied a coupled climate(MM5) and land-surface (LSM1) model to examine the effects of early and late winter wheat harvest on regional climate in the Department of Energy Atmospheric Radiation Measurement (ARM) Climate Research Facility in the Southern Great Plains, where winter wheat accounts for 20 percent of the land area. Within the winter wheat region, simulated 2 m air temperature was 1.3 C warmer in the Early Harvest scenario at mid-day averaged over the two weeks following harvest. Soils in the harvested area were drier and warmer in the top 10 cm and wetter in the 10-20 cm layer. Midday soils were 2.5 C warmer in the harvested area at mid-day averaged over the two weeks following harvest. Harvest also dramatically altered latent and sensible heat fluxes. Although differences between scenarios diminished once both scenarios were harvested, the short-term impacts of land management on climate were comparable to those from land cover change demonstrated in other studies.

Cooley, H.S.; Riley, W.J.; Torn, M.S.; He, Y.

2004-07-01T23:59:59.000Z

80

Description of Model Data for SNL13.2-00-Land: A  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Description of Model Data for SNL13.2-00-Land: A 13.2 MW Land-based Turbine Model with SNL100-00 Blades D. Todd Griffith, Brian R. Resor Sandia National Laboratories Wind and Water...

Note: This page contains sample records for the topic "land change modeler" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

An Evaluation of Biomass Energy Potential with a Global Energy and Land Use Model  

Science Journals Connector (OSTI)

The authors evaluate global land use competition and bioenergy potential through developing a global energy and land use model using a SD ... The model describes competition among various uses of biomass such as ...

H. Yamamoto; K. Yamaji

1997-01-01T23:59:59.000Z

82

Coupling GIS and LCA for biodiversity assessments of land use: Part 1: Inventory modeling  

E-Print Network [OSTI]

scenarios were developed with GIS modeling. Current land use0170-9 LAND USE IN LCA Coupling GIS and LCA for biodiversityGeographic information systems (GIS) are adept at modeling

Geyer, Roland; Stoms, David M.; Lindner, Jan P.; Davis, Frank W.; Wittstock, Bastian

2010-01-01T23:59:59.000Z

83

Coupling the High Complexity Land Surface Model ACASA to the Mesoscale Model WRF  

E-Print Network [OSTI]

In this study, the Weather Research and Forecasting Model (WRF) is coupled with the Advanced Canopy-Atmosphere-Soil Algorithm (ACASA), a high complexity land surface model. Although WRF is a state-of-the-art regional ...

Xu, L.

84

Energy and greenhouse gas emission effects of corn and cellulosic ethanol with technology improvements and land use changes.  

SciTech Connect (OSTI)

Use of ethanol as a transportation fuel in the United States has grown from 76 dam{sup 3} in 1980 to over 40.1 hm{sup 3} in 2009 - and virtually all of it has been produced from corn. It has been debated whether using corn ethanol results in any energy and greenhouse gas benefits. This issue has been especially critical in the past several years, when indirect effects, such as indirect land use changes, associated with U.S. corn ethanol production are considered in evaluation. In the past three years, modeling of direct and indirect land use changes related to the production of corn ethanol has advanced significantly. Meanwhile, technology improvements in key stages of the ethanol life cycle (such as corn farming and ethanol production) have been made. With updated simulation results of direct and indirect land use changes and observed technology improvements in the past several years, we conducted a life-cycle analysis of ethanol and show that at present and in the near future, using corn ethanol reduces greenhouse gas emission by more than 20%, relative to those of petroleum gasoline. On the other hand, second-generation ethanol could achieve much higher reductions in greenhouse gas emissions. In a broader sense, sound evaluation of U.S. biofuel policies should account for both unanticipated consequences and technology potentials. We maintain that the usefulness of such evaluations is to provide insight into how to prevent unanticipated consequences and how to promote efficient technologies with policy intervention.

Wang, M.; Han, J.; Haq, Z; Tyner, .W.; Wu, M.; Elgowainy, A. (Energy Systems)

2011-05-01T23:59:59.000Z

85

Global climate change, land management, and biosolids application to semiarid grasslands  

SciTech Connect (OSTI)

Global climate change combined with improper land management, including over-grazing, can lead to a severe reduction in plant cover and soil productivity. This process is especially common in arid and semiarid regions with sparse vegetation cover. New and innovative methods of land management are needed to restore and maintain these ecosystems in a productive and sustainable state. Research conducted in New Mexico on the Rio Puerco Resource Area and the Sevilleta National Wildlife Refuge has shown that biosolids (municipal sewage sludge) application to semiarid grasslands can increase soil nutrient availability, increase plant cover and productivity, and decrease surface runoff and soil erosion without harming environmental quality.

Loftin, S.R. [Forest Service, Albuquerque, NM (United States). Rocky Mountain Forest and Range Experiment Station

1995-12-31T23:59:59.000Z

86

Evaluating the Land and Ocean Components of the Global Carbon Cycle in the CMIP5 Earth System Models  

Science Journals Connector (OSTI)

The authors assess the ability of 18 Earth system models to simulate the land and ocean carbon cycle for the present climate. These models will be used in the next Intergovernmental Panel on Climate Change (IPCC) Fifth Assessment Report (AR5) for ...

A. Anav; P. Friedlingstein; M. Kidston; L. Bopp; P. Ciais; P. Cox; C. Jones; M. Jung; R. Myneni; Z. Zhu

2013-09-01T23:59:59.000Z

87

A resource complex for Sandy Neck Beach : an exploration in building on an ever-changing land  

E-Print Network [OSTI]

This thesis is an exploration into a spit of land, called Sandy Neck Beach on Cape Cod, Massachusetts. It is a barrier beach system which is experiencing many changes. These changes are manifest not only in its physical ...

Solarz, Cynthia L. (Cynthia Lynne)

1987-01-01T23:59:59.000Z

88

Climate is affected more by maritime than by continental land use change: A multiple scale analysis  

Science Journals Connector (OSTI)

Tropical deforestation appears to have larger impacts on local, regional and global climate when it occurs under maritime conditions rather then under continental conditions. At the local scale, we compare results from a field experiment in Puerto Rico with other long-term studies of the changes in surface fluxes after deforestation. Changes in surface fluxes are larger in maritime situations because a number of feedback mechanisms appears less relevant (e.g. the dependency of soil moisture on recycling of water and the larger reduction of net radiation in the wet season due to clouds in continental regions). Pastures may evaporate at similarly high rates as forests when soil moisture is sufficient, which has a strong reducing effect on the sensible heat flux after deforestation. At the regional scale (?102km2), model simulations show that the meso-scale sea breeze circulation under maritime conditions is more effective in transporting heat and moisture to the upper troposphere than convection is in the continental case. Thus islands function as triggers of convection, whereas the intensity of the sea breeze-trigger is sensitive to land use change. At the global scale, using satellite-derived latent heating rates of the upper troposphere, it is shown that 40% of the latent heating associated with deep convection takes place in the Maritime Continent (Indonesia and surroundings) and may be produced mostly by small islands. Continents contribute only 20% of the latent heating of the upper troposphere. Thus, sea breeze circulations exert significant influence on the Hadley cell circulation. These results imply that, from a climate perspective, further deforestation studies would do well to focus more on maritime conditions.

M.K. van der Molen; A.J. Dolman; M.J. Waterloo; L.A. Bruijnzeel

2006-01-01T23:59:59.000Z

89

High-performance Earth system modeling with NASA/GSFCs Land Information System  

Science Journals Connector (OSTI)

The Land Information System software (LIS; http://lis.gsfc.nasa.gov/, 2006) has been developed to support high-performance land surface modeling and data assimilation. LIS integrates parallel and distributed comp...

C. D. Peters-Lidard; P. R. Houser; Y. Tian

2007-09-01T23:59:59.000Z

90

Enhancing Model Skill by Assimilating SMOPS Blended Soil Moisture Product into Noah Land Surface Model  

Science Journals Connector (OSTI)

Many studies that have assimilated remotely sensed soil moisture into land surface models have generally focused on retrievals from a single satellite sensor. However, few studies have evaluated the merits of assimilating ensemble product that are ...

Jifu Yin; Xiwu Zhan; Youfei Zheng; Jicheng Liu; Li Fang; Christopher R. Hain

91

Carbon Flux to the Atmosphere From Land-use Changes: 1850 to 1990  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Carbon Flux to the Atmosphere From Land-use Changes: 1850 to 1990 Carbon Flux to the Atmosphere From Land-use Changes: 1850 to 1990 (NDP-050/R1) DOI: 10.3334/CDIAC/lue.ndp050 data Data PDF PDF The PDF of NDP-050/R1 (body of report, plus appendices A through E) and tellus51b.pdf (Appendix F, reprint of Houghton paper in Tellus, Vol. 51B; copyright 1999 Blackwell Publishing Ltd and reprinted with kind permission from the publisher) Contributors Richard A. Houghton Joseph L. Hackler The Woods Hole Research Center Woods Hole, Massachusetts Please Note: Revised data through the year 2000 are available in CDIAC's Trends Online. Prepared by Robert M. Cushman Carbon Dioxide Information Analysis Center Environmental Sciences Division Publication No. 5054 Date Published: February 2001 Prepared for the Environmental Sciences Division Office of Biological and Environmental Research

92

Interface between land and water,shoreline change analyses for erosion/accretion,hazards,planning Derived from coastal survey maps,nautical charts,aerial photos,LIDAR  

E-Print Network [OSTI]

Derived from bathymetry,scientific mesh,one-dimensional hydrological models;measured by sub bottomShorelines Interface between land and water,shoreline change analyses for erosion;national cartographic standards often used Tracks and Cruises Shiptracks during a cruise,tracks of vehicles towed from

Wright, Dawn Jeannine

93

Salt Management for Sustainable Degraded Water Land Application under Changing Climatic Conditions  

Science Journals Connector (OSTI)

The percentages of the soils with salinity problem on irrigated lands in different countries are 27% for India, 28% for Pakistan, 13% for Israel, 20% for Australia, 15% for China, 50% for Iraq, and 30% for Egypt. ... Currently, under changing climatic conditions, the trend is for surface waters to dramatically increase in salinity due to higher evaporations rates coinciding with increased average daily temperatures. ... Global warming leads to higher water demand for crop production. ...

Runbin Duan; Clifford B. Fedler

2013-09-05T23:59:59.000Z

94

Globalization and population drivers of rural-urban land-use change in Chihuahua, Mexico  

Science Journals Connector (OSTI)

A thorough examination of the causes of land-use change is necessary to effectively deal with the magnitude of changes across the globe. Chihuahua, Mexico is experiencing rapid land-use changes due to processes of globalization. The emergence of Mexico's maquiladora program is an indicator of economic globalization that has had far-reaching social and environmental consequences. This article examines population and income patterns from 1970 to 2000 as part of a hierarchical system and tests whether or not processes of globalization can be detected in the patterns. Findings indicate that population and income concentrate primarily in Juarez, while simultaneously deconcentrating in most other municipios of the State. Moreover, these patterns correlate with patterns of maquiladora concentration. Additional findings identify proximity to the US and established urban centers as drivers of population concentration. These findings support the notion that patterns and processes of globalization are important drivers of population and income concentration at the local level in Chihuahua, Mexico. Finally, the findings support the conceptualization of population land-use and income concentration as part of a hierarchical system.

Nate Currit; William E. Easterling

2009-01-01T23:59:59.000Z

95

Bioenergy Production from Perennial Energy Crops: A Consequential LCA of 12 Bioenergy Scenarios including Land Use Changes  

Science Journals Connector (OSTI)

Bioenergy Production from Perennial Energy Crops: A Consequential LCA of 12 Bioenergy Scenarios including Land Use Changes ... In the endeavor of optimizing the sustainability of bioenergy production in Denmark, this consequential life cycle assessment (LCA) evaluated the environmental impacts associated with the production of heat and electricity from one hectare of Danish arable land cultivated with three perennial crops: ryegrass (Lolium perenne), willow (Salix viminalis) and Miscanthus giganteus. ... Soil carbon changes, direct and indirect land use changes as well as uncertainty analysis (sensitivity, MonteCarlo) were included in the LCA. ...

Davide Tonini; Lorie Hamelin; Henrik Wenzel; Thomas Astrup

2012-11-05T23:59:59.000Z

96

Abundance of northern bobwhite and scaled quail in Texas: influence of weather and land-cover change  

E-Print Network [OSTI]

. In the South Texas Plains, where scaled quail abundance exhibited no trend, woody land-cover generally became less dense between 1976 and 1998. This study indicated weather variability and land-cover change were possible influential factors on quail abundance...

Bridges, Andrew Scott

2012-06-07T23:59:59.000Z

97

THE USE OF REMOTE SENSING AND GEOGRAPHICAL INFORMATION SYSTEMS TO CREATE LAND USE AND LAND COVER MAPS AND TO DETERMINE THE CHANGES IN THE LAND USE AND LAND COVER OVER A TEN YEAR PERIOD.  

E-Print Network [OSTI]

??Construction of land use and land cover (LULC) maps was accomplished through the use of remote sensing and GIS. Remote sensing and GIS were used (more)

Johnson, Adam Bradford

2005-01-01T23:59:59.000Z

98

Changes in the Land Surface Energy Budget in Eastern China over the Past Three Decades: Contributions of Land-Cover Change and Climate Change  

Science Journals Connector (OSTI)

Sensible heat flux (H), latent heat flux (LE), and net radiation (NR) are important surface energy components that directly influence climate systems. In this study, the changes in the surface energy and their contributions from global climate ...

J. W. Yan; J. Y. Liu; B. Z. Chen; M. Feng; S. F. Fang; G. Xu; H. F. Zhang; M. L. Che; W. Liang; Y. F. Hu; W. H. Kuang; H. M. Wang

2014-12-01T23:59:59.000Z

99

Connecting seas: western Palaearctic continental flyway for water birds in the perspective of changing land use  

E-Print Network [OSTI]

of changing land use and climate M E N N O B A R T R . VA N E E R D E N *, R U D O L F H . D R E N T w, J U L I A S TA H L w and J A N P. B A K K E R z *Institute for Inland Water Management and Wastewater Treatment RIZA, PO Box 17, 8200 AA Lelystad, The Netherlands, wAnimal Ecology Group, Centre for Ecological

Kleyer, Michael

100

An update on modeling land-ice/ocean interactions in CESM  

SciTech Connect (OSTI)

This talk is an update on ongoing land-ice/ocean coupling work within the Community Earth System Model (CESM). The coupling method is designed to allow simulation of a fully dynamic ice/ocean interface, while requiring minimal modification to the existing ocean model (the Parallel Ocean Program, POP). The method makes use of an immersed boundary method (IBM) to represent the geometry of the ice-ocean interface without requiring that the computational grid be modified in time. We show many of the remaining development challenges that need to be addressed in order to perform global, century long climate runs with fully coupled ocean and ice sheet models. These challenges include moving to a new grid where the computational pole is no longer at the true south pole and several changes to the coupler (the software tool used to communicate between model components) to allow the boundary between land and ocean to vary in time. We discuss benefits for ice/ocean coupling that would be gained from longer-term ocean model development to allow for natural salt fluxes (which conserve both water and salt mass, rather than water volume).

Asay-davis, Xylar [Los Alamos National Laboratory

2011-01-24T23:59:59.000Z

Note: This page contains sample records for the topic "land change modeler" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

Scientific analysis is essential to assess biofuel policy effects: in response to the paper by Kim and Dale on "Indirect land use change for biofuels: Testing predictions and improving analytical methodologies"  

SciTech Connect (OSTI)

Vigorous debate on the effects of biofuels derives largely from the changes in land use estimated using economic models designed mainly for the analysis of agricultural trade and markets. The models referenced for land-use change (LUC) analysis in the U.S. Environmental Protection Agency Final Rule on the Renewable Fuel Standard include GTAP, FAPRI-CARD, and FASOM. To address bioenergy impacts, these models were expanded and modified to facilitate simulations of hypothesized LUC. However, even when models use similar basic assumptions and data, the range of LUC results can vary by ten-fold or more. While the market dynamics simulated in these models include processes that are important in estimating effects of biofuel policies, the models have not been validated for estimating land-use changes and employ crucial assumptions and simplifications that contradict empirical evidence.

Kline, Keith L [ORNL] [ORNL; Oladosu, Gbadebo A [ORNL] [ORNL; Dale, Virginia H [ORNL] [ORNL; McBride, Allen [ORNL] [ORNL

2011-01-01T23:59:59.000Z

102

A Parameterization of Heterogeneous Land Surfaces for Atmospheric Numerical Models and Its Impact on Regional Meteorology  

Science Journals Connector (OSTI)

Natural land surfaces are usually heterogeneous over the resolvable scales considered in atmospheric numerical models. Therefore, model surface parameterizations that assume surface homogeneity may fail to represent the surface forcing ...

R. Avissar; R. A. Pielke

1989-10-01T23:59:59.000Z

103

Fire dynamics during the 20th century simulated by the Community Land Model  

E-Print Network [OSTI]

Fire is an integral Earth System process that interacts with climate in multiple ways. Here we assessed the parametrization of fires in the Community Land Model (CLM-CN) and improved the ability of the model to reproduce ...

Kloster, S.; Mahowald, N. M.; Randerson, J. T.; Thornton, P. E.; Hoffman, F. M.; Levis, Samuel; Lawrence, P. J.; Feddema, Johannes J.; Oleson, Keith W.; Lawrence, D. M.

2010-01-01T23:59:59.000Z

104

CARBON FLUX TO THE ATMOSPHERE FROM LAND-USE CHANGES: 1850 TO 1990 (APPENDIX  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

E: FULL LISTING OF COMPARE.DAT (FILE 4) E: FULL LISTING OF COMPARE.DAT (FILE 4) The following is a full listing of ascii file compare.dat (File 4), which is also provided, in binary spreadsheet format, as file compare.wk1 (File 5). This file compares the estimated global total net flux of carbon to the atmosphere from land-use change, from 1850 to 1990, by year, for this database (Houghton 1999) and three earlier publications (Houghton et al. 1983, Houghton and Skole 1990, and Houghton and Hackler 1995). Note that the data for the period 1850 through 1859 attributed below to Houghton et al. (1983) were not actually presented in that publication but are present in the data used in that publication. Units = Pg of carbon (1 petagram = 1015 grams); -9.999 denotes missing value Year Houghton Houghton Houghton Houghton

105

CARBON FLUX TO THE ATMOSPHERE FROM LAND-USE CHANGES: 1850 TO 1990 (APPENDIX  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

D: FULL LISTING OF NDP050.DAT (FILE 2) D: FULL LISTING OF NDP050.DAT (FILE 2) The following is a full listing of ascii file ndp050.dat (File 2), which is also provided, in binary spreadsheet format, as file ndp050.wk1 (File 3). This file lists the estimated net flux of carbon, in units of 1000 Gg of carbon (1 gigagram = 109 g), to the atmosphere from land-use change, from 1850 through 1990, by year and by region, along with the global totals. The values in this listing replace the values in files netflux.* in Houghton and Hackler (1995), the previous version of this database. Year North South and Europe North Tropical Former China South and Pacific TOTAL America Central Africa and Africa Soviet Southeast Developed FLUX America Middle East Union Asia Region

106

Chloride-mass-balance for predicting increased recharge after land-use change  

SciTech Connect (OSTI)

The chloride-mass-balance (CMB) method has been used extensively to estimate recharge in arid and semi-arid environments. Required data include estimates of annual precipitation, total chloride input (from dry fallout and precipitation), and pore-water chloride concentrations. Typically, CMB has been used to estimate ancient recharge but recharge from recent land-use change has also been documented. Recharge rates below a few mm/yr are reliably detected with CMB; however, estimates above a few mm/yr appear to be less reliable. We tested the CMB method against 26 years of drainage from a 7.6-m-deep lysimeter at a simulated waste-burial ground, located on the Department of Energy s Hanford Site in southeastern Washington State, USA where land-use change has increased recharge rates. Measured drainage from the lysimeter for the past 26 years averaged 62 mm/yr. Precipitation averaged 190 mm/yr with an estimated chloride input of 0.225 mg/L. Initial pore-water chloride concentration was 88 mg/L and decreased to about 6 mg/L after 26 years, while the drainage water decreased to less than 1 mg/L. A recharge estimate made using chloride concentrations in drain water was within 20 percent of the measured drainage rate. In contrast, recharge estimates using 1:1 (water: soil) extracts were lower than actual by factors ranging from 2 to 8 or more. The results suggest that when recharge is above a few mm/yr, soil water extracts can lead to unreliable estimates of recharge. For conditions of elevated recharge, direct sampling of pore water is the preferred method, because chloride concentrations are often 20 to 50 times higher in directly-sampled pore water than in pore-water extracts.

Gee, G.W.; Zhang, Z.F.; Tyler, S.W.; Albright, W.H.; Singleton, M.J.

2004-02-23T23:59:59.000Z

107

Water Balance in the Amazon Basin from a Land Surface Model Ensemble  

Science Journals Connector (OSTI)

Despite recent advances in land surface modeling and remote sensing, estimates of the global water budget are still fairly uncertain. This study aims to evaluate the water budget of the Amazon basin based on several state-of-the-art land surface ...

Augusto C. V. Getirana; Emanuel Dutra; Matthieu Guimberteau; Jonghun Kam; Hong-Yi Li; Bertrand Decharme; Zhengqiu Zhang; Agnes Ducharne; Aaron Boone; Gianpaolo Balsamo; Matthew Rodell; Ally M. Toure; Yongkang Xue; Christa D. Peters-Lidard; Sujay V. Kumar; Kristi Arsenault; Guillaume Drapeau; L. Ruby Leung; Josyane Ronchail; Justin Sheffield

2014-12-01T23:59:59.000Z

108

An integrated simulation method for flash-flood risk assessment :2. Effect of historical changes in land use Hydrology and Earth System Sciences, 6(3), 285294 (2002) EGS  

E-Print Network [OSTI]

An integrated simulation method for flash-flood risk assessment :2. Effect of historical changes. Flood frequency analyses of the annual flood series, retrieved from the simulations, were used into quantitative methods for risk assessment. Keywords: flood, simulation, distributed model, land-use changes

Paris-Sud XI, Université de

109

Land-use transition for bioenergy and climate stabilization: model comparison of drivers, impacts and interactions with other land use based mitigation options  

SciTech Connect (OSTI)

This study is a model comparison assessing the drivers and impacts of bioenergy production on the global land system and the interaction with other land use based mitigation options in the context of the EMF 27 project. We compare and evaluate results from three integrated assessment models (GCAM, IMAGE, and ReMIND/MAgPIE). All three models project that dedicated bioenergy crops and biomass residues are a potentially important and cost-effective component of the energy system. But bioenergy deployment levels and feedstock composition vary notably across models as do the implications for land-use and greenhouse gas emissions and the interaction with other land use based mitigation measures. Despite numerous model differences, we identify a few that are likely contributing to differences in land-use and emissions attributable to energy crop deployment.

Popp, Alexander; Rose, Steven K.; Calvin, Katherine V.; Van Vuuren, Detlef; Dietrich, Jan P.; Wise, Marshall A.; Stehfest, Eike; Humpenoder, Florian; Kyle, G. Page; Van Vliet, Jasper; Bauer, Nico; Lotze-Campen, Hermann; Klein, David; Kriegler, Elmar

2014-04-01T23:59:59.000Z

110

A Physically Based Runoff Routing Model for Land Surface and Earth System Models  

SciTech Connect (OSTI)

A new physically based runoff routing model, called the Model for Scale Adaptive River Transport (MOSART), has been developed to be applicable across local, regional, and global scales. Within each spatial unit, surface runoff is first routed across hillslopes and then discharged along with subsurface runoff into a tributary subnetwork before entering the main channel. The spatial units are thus linked via routing through the main channel network, which is constructed in a scale-consistent way across different spatial resolutions. All model parameters are physically based, and only a small subset requires calibration.MOSART has been applied to the Columbia River basin at 1/ 168, 1/ 88, 1/ 48, and 1/ 28 spatial resolutions and was evaluated using naturalized or observed streamflow at a number of gauge stations. MOSART is compared to two other routing models widely used with land surface models, the River Transport Model (RTM) in the Community Land Model (CLM) and the Lohmann routing model, included as a postprocessor in the Variable Infiltration Capacity (VIC) model package, yielding consistent performance at multiple resolutions. MOSART is further evaluated using the channel velocities derived from field measurements or a hydraulic model at various locations and is shown to be capable of producing the seasonal variation and magnitude of channel velocities reasonably well at different resolutions. Moreover, the impacts of spatial resolution on model simulations are systematically examined at local and regional scales. Finally, the limitations ofMOSART and future directions for improvements are discussed.

Li, Hongyi; Wigmosta, Mark S.; Wu, Huan; Huang, Maoyi; Ke, Yinghai; Coleman, Andre M.; Leung, Lai-Yung R.

2013-06-13T23:59:59.000Z

111

Transtheoretical Model of Change with couples  

E-Print Network [OSTI]

The Transtheoretical Model of Change is intended to be a general model of change that can be applied to many populations and domains of change. However, most of the studies that have investigated this model have focused on addiction-related topics...

Schneider, William Joel

2004-09-30T23:59:59.000Z

112

A new GIS toolbox for integrating massive heterogeneous GIS data for land use change analysis A new GIS toolbox for integrating  

E-Print Network [OSTI]

, environmental impacts, biogas maize, permanent grassland, Germany. 1. Introduction Agricultural land use.laggner@ti.bund.de Abstract Agricultural land use in Germany and related im- pacts on the environment and the use of natural statistical analysis, we summarize impacts of increased biogas production on agricultural land use change

Köbben, Barend

113

Climate Models from the Joint Global Change Research Institute  

DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

Staff at the Joint Institute develop and use models to simulate the economic and physical impacts of global change policy options. The GCAM, for example, gives analysts insight into how regional and national economies might respond to climate change mitigation policies including carbon taxes, carbon trading, and accelerated deployment of energy technology. Three available models are Phoenix, GCAM, and EPIC. Phoenix is a global, dynamic recursive, computable general equilibrium model that is solved in five-year time steps from 2005 through 2100 and divides the world into twenty-four regions. Each region includes twenty-six industrial sectors. Particular attention is paid to energy production in Phoenix. There are nine electricity-generating technologies (coal, natural gas, oil, biomass, nuclear, hydro, wind, solar, and geothermal) and four additional energy commodities: crude oil, refined oil products, coal, and natural gas. Phoenix is designed to answer economic questions related to international climate and energy policy and international trade. Phoenix replaces the Second Generation Model (SGM) that was formerly used for general equilibrium analysis at JGCRI. GCAM is the Global Change Assessment Model, a partial equilibrium model of the world with 14 regions. GCAM operates in 5 year time steps from 1990 to 2095 and is designed to examine long-term changes in the coupled energy, agriculture/land-use, and climate system. GCAM includes a 151-region agriculture land-use module and a reduced form carbon cycle and climate module in addition to its incorporation of demographics, resources, energy production and consumption. The model has been used extensively in a number of assessment and modeling activities such as the Energy Modeling Forum (EMF), the U.S. Climate Change Technology Program, and the U.S. Climate Change Science Program and IPCC assessment reports. GCAM is now freely available as a community model. The Environmental Policy Integrated Climate (EPIC) Model is a process-based agricultural systems model composed of simulation components for weather, hydrology, nutrient cycling, pesticide fate, tillage, crop growth, soil erosion, crop and soil management and economics. Staff at PNNL have been involved in the development of this model by integrating new sub-models for soil carbon dynamics and nitrogen cycling.

114

Downscaling Global Land Cover Projections from an Integrated Assessment Model for Use in Regional Analyses: Results and Evaluation for the US from 2005 to 2095  

SciTech Connect (OSTI)

Projections of land cover change generated from Integrated Assessment Models (IAM) and other economic-based models can be applied for analyses of environmental impacts at subregional and landscape scales. For those IAM and economic models that project land use at the sub-continental or regional scale, these projections must be downscaled and spatially distributed prior to use in climate or ecosystem models. Downscaling efforts to date have been conducted at the national extent with relatively high spatial resolution (30m) and at the global extent with relatively coarse spatial resolution (0.5 degree).

West, Tristram O.; Le Page, Yannick LB; Huang, Maoyi; Wolf, Julie; Thomson, Allison M.

2014-06-05T23:59:59.000Z

115

SciTech Connect: Progress in coupling Land Ice and Ocean Models...  

Office of Scientific and Technical Information (OSTI)

AC52-06NA25396 Resource Type: Conference Resource Relation: Conference: Community Earth System Model Land Ice Working Group Meeting ; 2013-02-14 - 2013-02-15 ; Boulder,...

116

Representing Variability in Subgrid Snow Cover and Snow Depth in a Global Land Model: Offline Validation  

Science Journals Connector (OSTI)

Subgrid snow cover is one of the key parameters in global land models since snow cover has large impacts on the surface energy and moisture budgets, and hence the surface temperature. In this study, the Subgrid Snow Distribution (SSNOWD) snow ...

T. Nitta; K. Yoshimura; K. Takata; R. Oishi; T. Sueyoshi; S. Kanae; T. Oki; A. Abe-Ouchi; G. E. Liston

2014-05-01T23:59:59.000Z

117

The OceanLandAtmosphere Model: Optimization and Evaluation of Simulated Radiative Fluxes and Precipitation  

Science Journals Connector (OSTI)

This work continues the presentation and evaluation of the OceanLandAtmosphere Model (OLAM), focusing on the models ability to represent radiation and precipitation. OLAM is a new, state-of-the-art earth system model, capable of user-specified ...

David Medvigy; Robert L. Walko; Martin J. Otte; Roni Avissar

2010-05-01T23:59:59.000Z

118

The Impact of Observed Vegetation Changes on LandAtmosphere Feedbacks During Drought  

E-Print Network [OSTI]

Water Desalination and Reuse Centre, King Abdullah University of Science and Technology, Thuwal, Saudi conditions of the advanced research Weather Research and Forecasting (WRF) Model to assess the influence. 2010). Some changes in the climate and extreme weather events in Australia have been attributed

Evans, Jason

119

An international land-biosphere model benchmarking activity for the IPCC Fifth Assessment Report (AR5)  

SciTech Connect (OSTI)

The need to capture important climate feedbacks in general circulation models (GCMs) has resulted in efforts to include atmospheric chemistry and land and ocean biogeochemistry into the next generation of production climate models, called Earth System Models (ESMs). While many terrestrial and ocean carbon models have been coupled to GCMs, recent work has shown that such models can yield a wide range of results (Friedlingstein et al., 2006). This work suggests that a more rigorous set of global offline and partially coupled experiments, along with detailed analyses of processes and comparisons with measurements, are needed. The Carbon-Land Model Intercomparison Project (C-LAMP) was designed to meet this need by providing a simulation protocol and model performance metrics based upon comparisons against best-available satellite- and ground-based measurements (Hoffman et al., 2007). Recently, a similar effort in Europe, called the International Land Model Benchmark (ILAMB) Project, was begun to assess the performance of European land surface models. These two projects will now serve as prototypes for a proposed international land-biosphere model benchmarking activity for those models participating in the IPCC Fifth Assessment Report (AR5). Initially used for model validation for terrestrial biogeochemistry models in the NCAR Community Land Model (CLM), C-LAMP incorporates a simulation protocol for both offline and partially coupled simulations using a prescribed historical trajectory of atmospheric CO2 concentrations. Models are confronted with data through comparisons against AmeriFlux site measurements, MODIS satellite observations, NOAA Globalview flask records, TRANSCOM inversions, and Free Air CO2 Enrichment (FACE) site measurements. Both sets of experiments have been performed using two different terrestrial biogeochemistry modules coupled to the CLM version 3 in the Community Climate System Model version 3 (CCSM3): the CASA model of Fung, et al., and the carbon-nitrogen (CN) model of Thornton. Comparisons of the CLM3 offline results against observational datasets have been performed and are described in Randerson et al. (2009). CLM version 4 has been evaluated using C-LAMP, showing improvement in many of the metrics. Efforts are now underway to initiate a Nitrogen-Land Model Intercomparison Project (N-LAMP) to better constrain the effects of the nitrogen cycle in biosphere models. Presented will be new results from C-LAMP for CLM4, initial N-LAMP developments, and the proposed land-biosphere model benchmarking activity.

Hoffman, Forrest M [ORNL; Randerson, James T [ORNL; Thornton, Peter E [ORNL; Bonan, Gordon [National Center for Atmospheric Research (NCAR); Erickson III, David J [ORNL; Fung, Inez [University of California, Berkeley

2009-12-01T23:59:59.000Z

120

The Carbon-Land Model Intercomparison Project (C-LAMP): A Model-Data Comparison System for Evaluation of Coupled Biosphere-Atmosphere Models  

SciTech Connect (OSTI)

The need to capture important climate feebacks in general circulation models (GCMs) has resulted in new efforts to include atmospheric chemistry and land and ocean biogeochemistry into the next generation of production climate models, now often referred to as Earth System Models (ESMs). While many terrestrial and ocean carbon models have been coupled to GCMs, recent work has shown that such models can yield a wide range of results, suggesting that a more rigorous set of offline and partially coupled experiments, along with detailed analyses of processes and comparisons with measurements, are warranted. The Carbon-Land Model Intercomparison Project (C-LAMP) provides a simulation protocol and model performance metrics based upon comparisons against best-available satellite- and ground-based measurements (Hoffman et al., 2007). C-LAMP provides feedback to the modeling community regarding model improvements and to the measurement community by suggesting new observational campaigns. C-LAMP Experiment 1 consists of a set of uncoupled simulations of terrestrial carbon models specifically designed to examine the ability of the models to reproduce surface carbon and energy fluxes at multiple sites and to exhibit the influence of climate variability, prescribed atmospheric carbon dioxide (CO{sub 2}), nitrogen (N) deposition, and land cover change on projections of terrestrial carbon fluxes during the 20th century. Experiment 2 consists of partially coupled simulations of the terrestrial carbon model with an active atmosphere model exchanging energy and moisture fluxes. In all experiments, atmospheric CO{sub 2} follows the prescribed historical trajectory from C{sup 4}MIP. In Experiment 2, the atmosphere model is forced with prescribed sea surface temperatures (SSTs) and corresponding sea ice concentrations from the Hadley Centre; prescribed CO{sub 2} is radiatively active; and land, fossil fuel, and ocean CO{sub 2} fluxes are advected by the model. Both sets of experiments have been performed using two different terrestrial biogeochemistry modules coupled to the Community Land Model version 3 (CLM3) in the Community Climate System Model version 3 (CCSM3): The CASA model of Fung, et al., and the carbon-nitrogen (CN) model of Thornton. Comparisons against Ameriflus site measurements, MODIS satellite observations, NOAA flask records, TRANSCOM inversions, and Free Air CO{sub 2} Enrichment (FACE) site measurements, and other datasets have been performed and are described in Randerson et al. (2009). The C-LAMP diagnostics package was used to validate improvements to CASA and CN for use in the next generation model, CLM4. It is hoped that this effort will serve as a prototype for an international carbon-cycle model benchmarking activity for models being used for the Inter-governmental Panel on Climate Change (IPCC) Fifth Assessment Report. More information about C-LAMP, the experimental protocol, performance metrics, output standards, and model-data comparisons from the CLM3-CASA and CLM3-CN models are available at http://www.climatemodeling.org/c-lamp.

Hoffman, Forrest M [ORNL; Randerson, Jim [University of California, Irvine; Thornton, Peter E [ORNL; Mahowald, Natalie [Cornell University; Bonan, Gordon [National Center for Atmospheric Research (NCAR); Running, Steven [University of Montana, Missoula; Fung, Inez [University of California, Berkeley

2009-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "land change modeler" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

An Improved Land Surface Emissivity Parameter for Land Surface Models Using Global Remote Sensing Observations  

E-Print Network [OSTI]

Observations MENGLIN JIN Department of Atmospheric and Oceanic Science, University of Maryland, College Park Oceanic and Atmospheric Administration (NOAA) National Centers for Environmental Prediction (NCEP) model that the assumption of the constant emissivity induces errors in modeling the surface energy budget, especially over

Liang, Shunlin

122

Short communication: A functional test platform for the Community Land Model  

Science Journals Connector (OSTI)

The realistic representation of key biogeophysical and biogeochemical functions is the fundamental of process-based ecosystem models. A functional test platform is designed to create direct linkages between site measurements and the process-based ecosystem ... Keywords: Community Earth System Model, Community Land Model, Functional test, Photosynthesis

Dali Wang, Yang Xu, Peter Thornton, Anthony King, Chad Steed, Lianhong Gu, Joseph Schuchart

2014-05-01T23:59:59.000Z

123

FAO-Modelling System for Agricultural Impacts of Climate Change (MOSAICC) |  

Open Energy Info (EERE)

FAO-Modelling System for Agricultural Impacts of Climate Change (MOSAICC) FAO-Modelling System for Agricultural Impacts of Climate Change (MOSAICC) Jump to: navigation, search Tool Summary LAUNCH TOOL Name: FAO-Modelling System for Agricultural Impacts of Climate Change (MOSAICC) Agency/Company /Organization: Food and Agriculture Organization of the United Nations Sector: Climate, Land, Water Focus Area: Agriculture Topics: Co-benefits assessment Resource Type: Software/modeling tools User Interface: Desktop Application Website: www.fao.org/climatechange/mosaicc/66705/en/ FAO-Modelling System for Agricultural Impacts of Climate Change (MOSAICC) Screenshot References: FAO-Modelling System for Agricultural Impacts of Climate Change (MOSAICC)[1] "FAO-MOSAICC (for MOdelling System for Agricultural Impacts of Climate Change) is a system of models designed to carry out each step of the impact

124

Large-scale Validation of AMIP II Land-surface Simulations: Preliminary Results for Ten Models  

SciTech Connect (OSTI)

This report summarizes initial findings of a large-scale validation of the land-surface simulations of ten atmospheric general circulation models that are entries in phase II of the Atmospheric Model Intercomparison Project (AMIP II). This validation is conducted by AMIP Diagnostic Subproject 12 on Land-surface Processes and Parameterizations, which is focusing on putative relationships between the continental climate simulations and the associated models' land-surface schemes. The selected models typify the diversity of representations of land-surface climate that are currently implemented by the global modeling community. The current dearth of global-scale terrestrial observations makes exacting validation of AMIP II continental simulations impractical. Thus, selected land-surface processes of the models are compared with several alternative validation data sets, which include merged in-situ/satellite products, climate reanalyses, and off-line simulations of land-surface schemes that are driven by observed forcings. The aggregated spatio-temporal differences between each simulated process and a chosen reference data set then are quantified by means of root-mean-square error statistics; the differences among alternative validation data sets are similarly quantified as an estimate of the current observational uncertainty in the selected land-surface process. Examples of these metrics are displayed for land-surface air temperature, precipitation, and the latent and sensible heat fluxes. It is found that the simulations of surface air temperature, when aggregated over all land and seasons, agree most closely with the chosen reference data, while the simulations of precipitation agree least. In the latter case, there also is considerable inter-model scatter in the error statistics, with the reanalyses estimates of precipitation resembling the AMIP II simulations more than to the chosen reference data. In aggregate, the simulations of land-surface latent and sensible heat fluxes appear to occupy intermediate positions between these extremes, but the existing large observational uncertainties in these processes make this a provisional assessment. In all selected processes as well, the error statistics are found to be sensitive to season and latitude sector, confirming the need for finer-scale analyses which also are in progress.

Phillips, T J; Henderson-Sellers, A; Irannejad, P; McGuffie, K; Zhang, H

2005-12-01T23:59:59.000Z

125

Indirect land-use changes can overcome carbon savings from biofuels in Brazil  

Science Journals Connector (OSTI)

...the land rather than on allocating the market demand for livestock...the USDA (2009) Livestock and grain market news (http...WMJ, et al. (2008) Jatropha bio-diesel production and use. Biomass & Bioenergy...

David M. Lapola; Ruediger Schaldach; Joseph Alcamo; Alberte Bondeau; Jennifer Koch; Christina Koelking; Joerg A. Priess

2010-01-01T23:59:59.000Z

126

Interannual coupling between summertime surface temperature and precipitation over land: processes and implications for climate change  

Science Journals Connector (OSTI)

Widespread negative correlations between summertime-mean temperatures and precipitation over land regions are a well-known feature of terrestrial climate. This behavior has generally been interpreted in the context of soil moisture-atmosphere ...

Alexis Berg; Benjamin R. Lintner; Kirsten Findell; Sonia I. Seneviratne; Bart van den Hurk; Agns Ducharne; Frdrique Chruy; Stefan Hagemann; David M. Lawrence; Sergey Malyshev; Arndt Meier; Pierre Gentine

127

LandSea Thermal Contrast and Intensity of the North American Monsoon under Climate Change Conditions  

Science Journals Connector (OSTI)

The hypothesis that global warming during the twenty-first century will increase the landsea thermal contrast (LSTC) and therefore the intensity of early season precipitation of the North American monsoon (NAM) is examined. To test this ...

Abraham Torres-Alavez; Tereza Cavazos; Cuauhtemoc Turrent

2014-06-01T23:59:59.000Z

128

The Global Potential of Bioenergy on Abandoned Agriculture Lands  

Science Journals Connector (OSTI)

The Global Potential of Bioenergy on Abandoned Agriculture Lands ... The global potential for bioenergy from abandoned agriculture lands is determined to be less than 8% of current primary energy demand based on land use data and ecosystem modeling. ... Converting forest lands into bioenergy agriculture could accelerate climate change by emitting carbon stored in forests, while converting food agriculture lands into bioenergy agriculture could threaten food security. ...

J. Elliott Campbell; David B. Lobell; Robert C. Genova; Christopher B. Field

2008-06-25T23:59:59.000Z

129

The new GFDL global atmosphere and land model AM2/LM2: Evaluation with prescribed SST simulations  

E-Print Network [OSTI]

The new GFDL global atmosphere and land model AM2/LM2: Evaluation with prescribed SST simulations climatology, and components from previous models used at GFDL. The land model, known as LM2, includes soil of the coupled model AM2/LM2 is evaluated with a series of prescribed sea-surface temperature (SST) simulations

Bretherton, Chris

130

A Subbasin-based framework to represent land surface processes in an Earth System Model  

SciTech Connect (OSTI)

Realistically representing spatial heterogeneity and lateral land surface processes within and between modeling units in earth system models is important because of their implications to surface energy and water exchange. The traditional approach of using regular grids as computational units in land surface models and earth system models may lead to inadequate representation of lateral movements of water, energy and carbon fluxes, especially when the grid resolution increases. Here a new subbasin-based framework is introduced in the Community Land Model (CLM), which is the land component of the Community Earth System Model (CESM). Local processes are represented assuming each subbasin as a grid cell on a pseudo grid matrix with no significant modifications to the existing CLM modeling structure. Lateral routing of water within and between subbasins is simulated with the subbasin version of a recently-developed physically based routing model, Model for Scale Adaptive River Routing (MOSART). As an illustration, this new framework is implemented in the topographically diverse region of the U.S. Pacific Northwest. The modeling units (subbasins) are delineated from high-resolution Digital Elevation Model while atmospheric forcing and surface parameters are remapped from the corresponding high resolution datasets. The impacts of this representation on simulating hydrologic processes are explored by comparing it with the default (grid-based) CLM representation. In addition, the effects of DEM resolution on parameterizing topography and the subsequent effects on runoff processes are investigated. Limited model evaluation and comparison showed that small difference between the averaged forcing can lead to more significant difference in the simulated runoff and streamflow because of nonlinear horizontal processes. Topographic indices derived from high resolution DEM may not improve the overall water balance, but affect the partitioning between surface and subsurface runoff. More systematic analyses are needed to determine the relative merits of the subbasin representation compared to the commonly used grid-based representation, especially when land surface models are approaching higher resolutions.

Tesfa, Teklu K.; Li, Hongyi; Leung, Lai-Yung R.; Huang, Maoyi; Ke, Yinghai; Sun, Yu; Liu, Ying

2014-05-20T23:59:59.000Z

131

Wildfire Risk Mapping over the State of Mississippi: Land Surface Modeling Approach  

SciTech Connect (OSTI)

Three fire risk indexes based on soil moisture estimates were applied to simulate wildfire probability over the southern part of Mississippi using the logistic regression approach. The fire indexes were retrieved from: (1) accumulated difference between daily precipitation and potential evapotranspiration (P-E); (2) top 10 cm soil moisture content simulated by the Mosaic land surface model; and (3) the Keetch-Byram drought index (KBDI). The P-E, KBDI, and soil moisture based indexes were estimated from gridded atmospheric and Mosaic-simulated soil moisture data available from the North American Land Data Assimilation System (NLDAS-2). Normalized deviations of these indexes from the 31-year mean (1980-2010) were fitted into the logistic regression model describing probability of wildfires occurrence as a function of the fire index. It was assumed that such normalization provides more robust and adequate description of temporal dynamics of soil moisture anomalies than the original (not normalized) set of indexes. The logistic model parameters were evaluated for 0.25 x0.25 latitude/longitude cells and for probability representing at least one fire event occurred during 5 consecutive days. A 23-year (1986-2008) forest fires record was used. Two periods were selected and examined (January mid June and mid September December). The application of the logistic model provides an overall good agreement between empirical/observed and model-fitted fire probabilities over the study area during both seasons. The fire risk indexes based on the top 10 cm soil moisture and KBDI have the largest impact on the wildfire odds (increasing it by almost 2 times in response to each unit change of the corresponding fire risk index during January mid June period and by nearly 1.5 times during mid September-December) observed over 0.25 x0.25 cells located along the state of Mississippi Coast line. This result suggests a rather strong control of fire risk indexes on fire occurrence probability over this region.

Cooke, William H. [Mississippi State University (MSU); Mostovoy, Georgy [Mississippi State University (MSU); Anantharaj, Valentine G [ORNL; Jolly, W. Matt [USDA Forest Service

2012-01-01T23:59:59.000Z

132

A Functional Test Platform for the Community Land Model  

SciTech Connect (OSTI)

A functional test platform is presented to create direct linkages between site measurements and the process-based ecosystem model within the Community Earth System Models (CESM). The platform consists of three major parts: 1) interactive user interfaces, 2) functional test model and 3) observational datasets. It provides much needed integration interfaces for both field experimentalists and ecosystem modelers to improve the model s representation of ecosystem processes within the CESM framework without large software overhead.

Xu, Yang [ORNL] [ORNL; Thornton, Peter E [ORNL] [ORNL; King, Anthony Wayne [ORNL] [ORNL; Steed, Chad A [ORNL] [ORNL; Gu, Lianhong [ORNL] [ORNL; Schuchart, Joseph [ORNL] [ORNL

2014-01-01T23:59:59.000Z

133

Uncertainty Analysis of Runoff Simulations and Parameter Identifiability in the Community Land Model Evidence from MOPEX Basins  

SciTech Connect (OSTI)

With the emergence of earth system models as important tools for understanding and predicting climate change and implications to mitigation and adaptation, it has become increasingly important to assess the fidelity of the land component within earth system models to capture realistic hydrological processes and their response to the changing climate and quantify the associated uncertainties. This study investigates the sensitivity of runoff simulations to major hydrologic parameters in version 4 of the Community Land Model (CLM4) by integrating CLM4 with a stochastic exploratory sensitivity analysis framework at 20 selected watersheds from the Model Parameter Estimation Experiment (MOPEX) spanning a wide range of climate and site conditions. We found that for runoff simulations, the most significant parameters are those related to the subsurface runoff parameterizations. Soil texture related parameters and surface runoff parameters are of secondary significance. Moreover, climate and soil conditions play important roles in the parameter sensitivity. In general, site conditions within water-limited hydrologic regimes and with finer soil texture result in stronger sensitivity of output variables, such as runoff and its surface and subsurface components, to the input parameters in CLM4. This study demonstrated the feasibility of parameter inversion for CLM4 using streamflow observations to improve runoff simulations. By ranking the significance of the input parameters, we showed that the parameter set dimensionality could be reduced for CLM4 parameter calibration under different hydrologic and climatic regimes so that the inverse problem is less ill posed.

Huang, Maoyi; Hou, Zhangshuan; Leung, Lai-Yung R.; Ke, Yinghai; Liu, Ying; Fang, Zhufeng; Sun, Yu

2013-12-01T23:59:59.000Z

134

MODELING OF CHANGING ELECTRODE PROFILES  

SciTech Connect (OSTI)

A model for simulating the transient behavior of solid electrodes undergoing deposition or dissolution has been developed. The model accounts for ohmic drop, charge transfer overpotential, and mass transport limitations. The finite difference method, coupled with successive overrelaxation, was used as the basis of the solution technique. An algorithm was devised to overcome the computational instabilities associated with the calculations of the secondary and tertiary current distributions. Simulations were performed on several model electrode profiles: the sinusoid, the rounded corner, and the notch. Quantitative copper deposition data were obtained in a contoured rotating cylinder system, Sinusoidal cross-sections, machined on stainless steel cylinders, were used as model geometries, Kinetic parameters for use in the simulation were determined from polarization curves obtained on copper rotating cylinders, These parameters, along with other physical property and geometric data, were incorporated in simulations of growing sinusoidal profiles. The copper distributions on the sinusoidal cross-sections were measured and found to compare favorably with the simulated results. At low Wagner numbers the formation of a slight depression at the profile peak was predicted by the simulation and observed on the profile. At higher Wagner numbers, the simulated and experimental results showed that the formation of a depression was suppressed. This phenomenon was shown to result from the competition between ohmic drop and electrode curvature.

Prentice, Geoffrey Allen

1980-12-01T23:59:59.000Z

135

Assessing Naturalness in Northern Great Lakes Forests Based on Historical Land-Cover and Vegetation Changes  

E-Print Network [OSTI]

Assessing Naturalness in Northern Great Lakes Forests Based on Historical Land-Cover and Vegetation was developed to assess to what degree landscapes represent a natural state. Protected areas are often regarded into naturalness assessments and the results provide useful information for future park management. More broadly

136

INTERRELAITONS BETWEEN VARIABILITY OF GROUND-LEVEL OZONE AND LAND COVER CHANGE  

E-Print Network [OSTI]

ozone monitoring stations in Connecticut and Rohde Island were used for the analysis. The monitoring stations were classified into different categories based on their locations and land cover characteristics. Cars and gasoline-burning engines are large sources of VOCs. VOCs also come from consumer products

Wang, Y.Q. "Yeqiao"

137

Land use and land cover change: the effects of woody plant encroachment and prescribed fire on biodiversity and ecosystem carbon dynamics in a southern great plains mixed grass savanna  

E-Print Network [OSTI]

LAND USE AND LAND COVER CHANGE: THE EFFECTS OF WOODY PLANT ENCROACHMENT AND PRESCRIBED FIRE ON BIODIVERSITY AND ECOSYSTEM CARBON DYNAMICS IN A SOUTHERN GREAT PLAINS MIXED GRASS SAVANNA A Dissertation by EMILY BROOKE HOLLISTER Submitted... PLANT ENCROACHMENT AND PRESCRIBED FIRE ON BIODIVERSITY AND ECOSYSTEM CARBON DYNAMICS IN A SOUTHERN GREAT PLAINS MIXED GRASS SAVANNA A Dissertation by EMILY BROOKE HOLLISTER Submitted to the Office of Graduate Studies of Texas A&M University in partial...

Hollister, Emily Brooke

2009-05-15T23:59:59.000Z

138

Pan-Arctic landatmospheric fluxes of methane and carbon dioxide in response to climate change over the 21st century  

E-Print Network [OSTI]

Future changes of pan-Arctic landatmospheric methane (CH[subscript 4]) and carbon dioxide (CO[subscript 2]) depend on how terrestrial ecosystems respond to warming climate. Here, we used a coupled hydrologybiogeochemistry ...

Zhu, Xudong

139

247VECTORIZING THE COMMUNITY LAND MODEL VECTORIZING THE COMMUNITY  

E-Print Network [OSTI]

systems models (including the CLM) on vector architectures. However, the prior development of the CLM in Japan and the Cray X1 at Oak Ridge National Laboratory (ORNL) spawned renewed interest in running Earth

Hoffman, Forrest M.

140

Spatial perspectives in state-and-transition models: a missing link to land management?  

E-Print Network [OSTI]

REVIEW Spatial perspectives in state-and-transition models: a missing link to land management to select or justify management actions. State transitions are characteristi- cally heterogeneous in space transitions at each scale and that can be considered in empirical studies, STM narratives and management

Note: This page contains sample records for the topic "land change modeler" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

Greenhouse gas policy influences climate via direct effects of land-use change  

E-Print Network [OSTI]

intheCommunityEarthSystemModel(CESM1): Seasonaluse Model, and Community Earth System Model. The alternativenow passed to the Earth system models (Taylor, Stouffer, &

Jones, A.D.

2014-01-01T23:59:59.000Z

142

GoMRC Website Meta-analysis Report: Land-use and submerged aquatic vegetation change in the Gulf of Mexico  

SciTech Connect (OSTI)

Over the past century, health and spatial extent of seagrasses has decreased dramatically in the Gulf of Mexico. While some of the changes can be explained by direct impacts to the seagrass beds, we hypothesize that changes in the land use in the watersheds can also be correlated with the decline of seagrasses. Through this meta-analysis, we researched historical and compared trends in seagrass populations and land use in five bays and their watersheds within the Gulf of Mexico: Mobile Bay, Perdido Bay, Tampa Bay, Charlotte Harbor, and Galveston Bay. Using both historical records and spatial datasets, we examined land use and seagrass trends in these five areas.

Judd, Chaeli; Stefansson, Emily S.; Brushnahan, Heather

2007-12-06T23:59:59.000Z

143

Investigating the Ability of a Land Surface Model to Simulate Streamflow with the Accuracy of Hydrological Models: A Case Study Using MOPEX Materials  

Science Journals Connector (OSTI)

In the Model Parameter Estimation Experiment (MOPEX) project, after calibration of model parameters, complex rainfallrunoff hydrological models (HMs) simulated streamflow better than land surface models (LSMs), including the SoilWater...

Olga N. Nasonova; Yeugeniy M. Gusev; Yeugeniy E. Kovalev

2009-10-01T23:59:59.000Z

144

Optimal use of land surface temperature data to detect changes in tropical forest cover  

E-Print Network [OSTI]

Climate Change (2005), Eleventh Conference of Parties (COP), Agenda item 6: Reducing emissions from deforestation in developing countries,

2011-01-01T23:59:59.000Z

145

The Effects of Quality Control on Decreasing Error Propagation in the LandScan USA Population Distribution Model: A Case Study of Philadelphia County  

SciTech Connect (OSTI)

Landscan USA is a high resolution dasymetric model incorporating multiple ancillary variables to distribute populations. LandScan USA is a valuable tool in determining the population at risk during emergency response situations. However, a critical evaluation is necessary to produce user confidence regarding model accuracy through the verification and validation of model outputs. Unfortunately, dynamic models, such as population distribution, are often not validated due to the difficulty of having multiple input datasets and lack of validated data. A validated dataset allows analysis of model accuracy, as well as quantifying the benefits and costs of improving input datasets compared to find a balance for producing the best model. This paper examines inaccuracies present within the input variables of two national school datasets incorporated in the model. Schools were chosen since a validated school dataset exists for Philadelphia County, Pennsylvania. Quality control efforts utilized throughout the LandScan USA process are quantified to determine the degree of quality control necessary to have a statistically significant effect on model output. Typical LandScan USA quality control resulted in 43% of school enrollment values changed, compared to 89% for the validated dataset. Normal quality control methods resulted in 36% of schools being spatially relocated compared to 87% for the validated dataset. However, the costs of increasing quality control from normal to the validated dataset equated to a 600% increase in manual labor time for statistically insignificant improvements in LandScan USA daytime. This study enabled validation verification of not only the quality control process for LandScan USA, but also provides confidence in model output and use for policy issues, planning and emergency situations.

Patterson, Lauren [University of North Carolina, Chapel Hill; Urban, Marie L [ORNL; Myers, Aaron T [ORNL; Bhaduri, Budhendra L [ORNL; Bright, Eddie A [ORNL; Coleman, Phil R [ORNL

2009-01-01T23:59:59.000Z

146

Uncertainty Analysis of Runoff Simulations and Parameter Identifiability in the Community Land Model: Evidence from MOPEX Basins  

Science Journals Connector (OSTI)

In this study, the authors applied version 4 of the Community Land Model (CLM4) integrated with an uncertainty quantification (UQ) framework to 20 selected watersheds from the Model Parameter Estimation Experiment (MOPEX) spanning a wide range of ...

Maoyi Huang; Zhangshuan Hou; L. Ruby Leung; Yinghai Ke; Ying Liu; Zhufeng Fang; Yu Sun

2013-12-01T23:59:59.000Z

147

Assessing Impacts of Climate Change on Forests: The State of Biological Modeling  

DOE R&D Accomplishments [OSTI]

Models that address the impacts to forests of climate change are reviewed by four levels of biological organization: global, regional or landscape, community, and tree. The models are compared as to their ability to assess changes in greenhouse gas flux, land use, maps of forest type or species composition, forest resource productivity, forest health, biodiversity, and wildlife habitat. No one model can address all of these impacts, but landscape transition models and regional vegetation and land-use models consider the largest number of impacts. Developing landscape vegetation dynamics models of functional groups is suggested as a means to integrate the theory of both landscape ecology and individual tree responses to climate change. Risk assessment methodologies can be adapted to deal with the impacts of climate change at various spatial and temporal scales. Four areas of research development are identified: (1) linking socioeconomic and ecologic models, (2) interfacing forest models at different scales, (3) obtaining data on susceptibility of trees and forest to changes in climate and disturbance regimes, and (4) relating information from different scales.

Dale, V. H.; Rauscher, H. M.

1993-04-06T23:59:59.000Z

148

A Modeling Study of Irrigation Effects on Surface Fluxes and Land-Air-Cloud Interactions in the Southern Great Plains  

SciTech Connect (OSTI)

In this study, the authors incorporate an operational-like irrigation scheme into the Noah land surface model as part of the Weather Research and Forecasting Model (WRF). A series of simulations, with and without irrigation, is conducted over the Southern Great Plains (SGP) for an extremely dry (2006) and wet (2007) year. The results show that including irrigation reduces model bias in soil moisture and surface latent heat (LH) and sensible heat (SH) fluxes, especially during a dry year. Irrigation adds additional water to the surface, leading to changes in the planetary boundary layer. The increase in soil moisture leads to increases in the surface evapotranspiration and near-surface specific humidity but decreases in the SH and surface temperature. Those changes are local and occur during daytime. There is an irrigation-induced decrease in both the lifting condensation level (ZLCL) and mixed-layer depth. The decrease in ZLCL is larger than the decrease in mixed-layer depth, suggesting an increasing probability of shallow clouds. The simulated changes in precipitation induced by irrigation are highly variable in space, and the average precipitation over the SGP region only slightly increases. A high correlation is found among soil moisture, SH, and ZLCL. Larger values of soil moisture in the irrigated simulation due to irrigation in late spring and summer persist into the early fall, suggesting that irrigation-induced soil memory could last a few weeks to months. The results demonstrate the importance of irrigation parameterization for climate studies and improve the process-level understanding on the role of human activity in modulating landaircloud interactions.

Qian, Yun; Huang, Maoyi; Yang, Ben; Berg, Larry K.

2013-06-13T23:59:59.000Z

149

Change in Urban Land Use and Associated Attributes in the Upper San Francisco Estuary, 1990-2006  

E-Print Network [OSTI]

Bay watershed. Environmental Management Water Plan Land andwater quality in Georgian Bay. Environmental Management 44(

Stoms, David M.

2010-01-01T23:59:59.000Z

150

Combining empirical and theory-based land-use modelling approaches to assess economic potential of biofuel production avoiding iLUC: Argentina as a case study  

Science Journals Connector (OSTI)

Abstract In this paper, a land-use modelling framework is presented combining empirical and theory-based modelling approaches to determine economic potential of biofuel production avoiding indirect land-use changes (iLUC) resulting from land competition with other functions. The empirical approach explores future developments in food and feed production to determine land availability and technical potential of biofuel production. The theory-based approach assesses the economic performance of biofuel crops on the surplus land in comparison with other production systems and determines the economic potential of biofuel production. The framework is demonstrated for a case study in Argentina to determine the development of biofuel potential from soy and switchgrass up to 2030. Two scenarios were considered regarding future developments of productivity in agriculture and livestock production. It was found that under a scenario reflecting a continuation of current trends, no surplus land is expected to become available. Nevertheless, the potential for soybean biodiesel is expected to keep increasing up to 103PJ in 2030, due to the existence of a developed agro-industrial sector jointly producing feed and biodiesel. In case large technological developments occur, 32Mha could become available in 2030, which would allow for a technical potential of 472PJ soybean biodiesel and 1445PJ switchgrass bioethanol. According to the economic assessment, an economic potential of 368PJ of soy biodiesel and 1.1EJ switchgrass bioethanol could be attained, at a feedstock production cost of 100155 US$/ton and 2045 US$/ton, respectively. The region of southwest Buenos Aires and La Pampa provinces appeared to be particularly promising for switchgrass. The ability of jointly assessing future developments in land availability, technical and economic potential of biofuel production avoiding iLUC and spatial distribution of viable locations for growing biofuel crops means that the proposed framework is a step forward in assessing the potential for biofuel production that is both economically viable and sustainably produced.

V. Diogo; F. van der Hilst; J. van Eijck; J.A. Verstegen; J. Hilbert; S. Carballo; J. Volante; A. Faaij

2014-01-01T23:59:59.000Z

151

Can biofuels be a solution to climate change? The implications of land use change-related emissions for policy  

Science Journals Connector (OSTI)

...van der Wielen and Kim Meulenbroeks Can biofuels be a solution to climate change? The...Imperial College London, , London, UK Biofuels have gained increasing attention as an...validity of claims about the potential of biofuels to reduce GHG emissions relative to the...

2011-01-01T23:59:59.000Z

152

Utilizing CLASIC observations and multiscale models to study the impact of improved Land surface representation on modeling cloud- convection  

SciTech Connect (OSTI)

The CLASIC experiment was conducted over the US southern great plains (SGP) in June 2007 with an objective to lead an enhanced understanding of the cumulus convection particularly as it relates to land surface conditions. This project was design to help assist with understanding the overall improvement of land atmosphere convection initiation representation of which is important for global and regional models. The study helped address one of the critical documented deficiency in the models central to the ARM objectives for cumulus convection initiation and particularly under summer time conditions. This project was guided by the scientific question building on the CLASIC theme questions: What is the effect of improved land surface representation on the ability of coupled models to simulate cumulus and convection initiation? The focus was on the US Southern Great Plains region. Since the CLASIC period was anomalously wet the strategy has been to use other periods and domains to develop the comparative assessment for the CLASIC data period, and to understand the mechanisms of the anomalous wet conditions on the tropical systems and convection over land. The data periods include the IHOP 2002 field experiment that was over roughly same domain as the CLASIC in the SGP, and some of the DOE funded Ameriflux datasets.

Niyogi, Devdutta S. [Purdue

2013-06-07T23:59:59.000Z

153

Community Land Model Version 3.0 (CLM3.0) Developer's Guide  

SciTech Connect (OSTI)

This document describes the guidelines adopted for software development of the Community Land Model (CLM) and serves as a reference to the entire code base of the released version of the model. The version of the code described here is Version 3.0 which was released in the summer of 2004. This document, the Community Land Model Version 3.0 (CLM3.0) User's Guide (Vertenstein et al., 2004), the Technical Description of the Community Land Model (CLM) (Oleson et al., 2004), and the Community Land Model's Dynamic Global Vegetation Model (CLM-DGVM): Technical Description and User's Guide (Levis et al., 2004) provide the developer, user, or researcher with details of implementation, instructions for using the model, a scientific description of the model, and a scientific description of the Dynamic Global Vegetation Model integrated with CLM respectively. The CLM is a single column (snow-soil-vegetation) biogeophysical model of the land surface which can be run serially (on a laptop or personal computer) or in parallel (using distributed or shared memory processors or both) on both vector and scalar computer architectures. Written in Fortran 90, CLM can be run offline (i.e., run in isolation using stored atmospheric forcing data), coupled to an atmospheric model (e.g., the Community Atmosphere Model (CAM)), or coupled to a climate system model (e.g., the Community Climate System Model Version 3 (CCSM3)) through a flux coupler (e.g., Coupler 6 (CPL6)). When coupled, CLM exchanges fluxes of energy, water, and momentum with the atmosphere. The horizontal land surface heterogeneity is represented by a nested subgrid hierarchy composed of gridcells, landunits, columns, and plant functional types (PFTs). This hierarchical representation is reflected in the data structures used by the model code. Biophysical processes are simulated for each subgrid unit (landunit, column, and PFT) independently, and prognostic variables are maintained for each subgrid unit. Vertical heterogeneity is represented by a single vegetation layer, 10 layers for soil, and up to five layers for snow, depending on the snow depth. For computational efficiency, gridcells are grouped into ''clumps'' which are divided in cyclic fashion among distributed memory processors. Additional parallel performance is obtained by distributing clumps of gridcells across shared memory processors on computer platforms that support hybrid Message Passing Interface (MPI)/OpenMP operation. Significant modifications to the source code have been made over the last year to support efficient operation on newer vector architectures, specifically the Earth Simulator in Japan and the Cray X1 at Oak Ridge National Laboratory (Homan et al., 2004). These code modifications resulted in performance improvements even on the scalar architectures widely used for running CLM presently. To better support vectorized processing in the code, subgrid units (columns and PFTs) are grouped into ''filters'' based on their process-specific categorization. For example, filters (vectors of integers) referring to all snow, non-snow, lake, non-lake, and soil covered columns and PFTs within each clump are built and maintained when the model is run. Many loops within the scientific subroutines use these filters to indirectly address the process-appropriate subgrid units.

Hoffman, FM

2004-12-21T23:59:59.000Z

154

Net carbon flux from agriculture: Carbon emissions, carbon sequestration, crop yield, and land-use change  

Science Journals Connector (OSTI)

There is a potential to sequester carbon in soil by changing agricultural management practices. ... fossil-fuel use, agricultural inputs, and the carbon emissions associated with fossil fuels and other ... with f...

Tristram O. West; Gregg Marland

2003-04-01T23:59:59.000Z

155

Environmental Assessment Proposed Changes to the Sanitary Biosolids Land Application Program on the Oak Ridge Reservation Oak Ridge, Tennessee  

Broader source: Energy.gov (indexed) [DOE]

56 56 Environmental Assessment Proposed Changes to the Sanitary Biosolids Land Application Program on the Oak Ridge Reservation Oak Ridge, Tennessee February 2003 U.S. Department of Energy Oak Ridge Operations i ACRONYMS AND ABBREVIATIONS ac acres ALARA as low as reasonably achievable AMSA American Metropolitan Sewer Association CEQ Council on Environmental Quality CSF cancer slope factor DOE U.S. Department of Energy EA environmental assessment EFPC East Fork Poplar Creek EPA U.S. Environmental Protection Agency EPS Effluent Polishing System (West End Treatment Facility) FONSI Finding of No Significant Impact g gram ha hectares HEAST Health Effects Assessment Summary Tables HI hazard index HQ hazard quotient IDP Industrial Discharge Permit IRIS Integrated Risk Information System kg kilogram

156

The Changing US Electric Sector Business Model  

E-Print Network [OSTI]

The Changing US Electric Sector Business Model CATEE 2013 Clean Air Through Energy Efficiency Conference San Antonio, Texas December 17, 2013 ESL-KT-13-12-57 CATEE 2013: Clean Air Through Energy Efficiency Conference, San Antonio, Texas Dec. 16...-18 Copyright 2013 Deloitte Development LLC. All rights reserved. Fundamentals of the US Electric Sector Business Model Todays Challenges Faced by U.S. Electric Sector The Math Does Not Lie: A Look into the Sectors Future Disruption to Today...

Aliff, G.

2013-01-01T23:59:59.000Z

157

Finding of no significant impact: Changes in the sanitary sludge land application program on the Oak Ridge Reservation, Oak Ridge, Tennessee  

SciTech Connect (OSTI)

The U.S. Department of Energy (DOE) has completed an environmental assessment (DOE/EA-1042) that evaluates potential impacts of proposed changes in the sanitary sludge land application program on the DOE Oak Ridge Reservation (ORR), Oak Ridge, Tennessee. Changes in lifetime sludge land application limits and radionuclide loading are proposed, and two new sources of sewage sludge from DOE facilities would be transported to the City of Oak Ridge Publicly Owned Treatment Works (COR POTW). Lifetime sludge land application limits would increase from 22 tons/acre to 50 tons/acre, which is the limit approved and permitted by the Tennessee Department of Environment and Conservation (TDEC). With the approval of TDEC, the permissible radiological dose from sludge land application would change from the current limit of 2x background radionuclide concentrations in receiving soils to a risk-based dose limit of 4 millirem (mrem) per year for the maximally exposed individual. Sludge land application sites would not change from those that are currently part of the program. Based on the results of the analysis reported in the EA, DOE has determined that the proposed action is not a major federal action that would significantly affect the quality of the human environment within the context of the National Environmental Policy Act of 1969 (NEPA). Therefore, preparation of an environmental impact statement (EIS) is not necessary, and DOE is issuing this Finding of No Significant Impact (FONSI). 70 refs., 2 figs., 17 tabs.

NONE

1996-10-01T23:59:59.000Z

158

GIS-Based Cellular Automaton Model to allocate Kansas High Plains Irrigated Agriculture Land Use  

E-Print Network [OSTI]

GIS-Based Cellular Automaton Model to Allocate Irrigated Agriculture Land Use Peiwen Chiu Kansas State University GIS Day 2013 November 20, 2013 University of Kansas High Plains/Ogallala Aquifer 8 States 186,000 mi2 480,000 km2 http... of Acreage From the Model Iterations Whats Next This work was supported in part by the National Science Foundation (grant GEO0909515) and the United States Department of Agriculture/Agricultural Research Service (Ogallala Aquifer Initiative). Any findings...

Chiu, Peiwen

2014-04-08T23:59:59.000Z

159

Testing a Detailed Biophysical Parameterization for LandAir Exchange in a High-Resolution Boundary-Layer Model  

Science Journals Connector (OSTI)

In order to properly model the influence of land surface properties on mesoscale atmospheric phenomena, it is important to include physically realistic parameterizations of major biophysical processes involved. The primary influence of the ...

S. Argentini; P. J. Wetzel; V. M. Karyampudi

1992-02-01T23:59:59.000Z

160

Interactive Crop Management in the Community Earth System Model (CESM1): Seasonal Influences on LandAtmosphere Fluxes  

Science Journals Connector (OSTI)

The Community Earth System Model, version 1 (CESM1) is evaluated with two coupled atmosphereland simulations. The CTRL (control) simulation represents crops as unmanaged grasses, while CROP represents a crop managed simulation that includes ...

Samuel Levis; Gordon B. Bonan; Erik Kluzek; Peter E. Thornton; Andrew Jones; William J. Sacks; Christopher J. Kucharik

2012-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "land change modeler" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

Changes of Land Use and Landscape Pattern in Feicheng Coal Mining Area Based on Remote Sensing  

Science Journals Connector (OSTI)

The spatial changes of landscape pattern of Feicheng Coal Mining Area were analyzed in order to improve landscape and ecological environment quality and to guarantee sustainable development in mining areas. Methods employed include RS, GIS, and landscape ... Keywords: Feicheng Coal Mining Area, landscape pattern, RS, landscape pattern index, dynamics analysis

Lu Yanyan; Li Xinju; Guo Suli; Wang Mei

2011-10-01T23:59:59.000Z

162

UCL ENVIRONMENTAL CHANGE RESEARCH CENTRE Land-Use Experiments in the Loch Laidon Catchment  

E-Print Network [OSTI]

, D. T. Monteith3 , K. Roe1 , N. L. Rose1 & H. Yang1 2011 1. Environmental Change Research Centre.............................................................................................................................. 15 4.1.1 COMPARISON OF THE CONTROL AND EXPERIMENTAL BURN ..........................................................................16 4.1.2 COMPARISON OF THE ALLT RIABHACH NA BIORAICH WITH THE CONTROL AND LOWER EXPERIMENTAL BURN

Jones, Peter JS

163

CARBON FLUX TO THE ATMOSPHERE FROM LAND-USE CHANGES: 1850 TO 1990 (APPENDIX  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

A: ECOSYSTEM AREA BY REGION A: ECOSYSTEM AREA BY REGION This listing indicates the area (in units of 106 hectare) in different ecosystems for the nine regions in this database, for the years 1700, 1850, and 1990, along with the percent change from 1850 to 1990. The values in this listing replace the values in files areas.* in Houghton and Hackler (1995), the previous version of this database. Missing values are denoted by -9999. % Change 1700 1850 1990 1850-1990 North America Temperate evergreen forest 236 222 215 -0.03 Temperate deciduous forest 157 125 118 -0.06 Boreal forest 325 325 322 -0.01 Temperate woodland/shrubland 302 302 292 -0.03 Temperate grassland 568 481 172 -0.64

164

Indirect land-use changes can overcome carbon savings from biofuels in Brazil  

Science Journals Connector (OSTI)

...influence deforestation rates. The modeled deforestation rate of Central Brazil...2 ) rather than rates (Mg CO 2 ha...for electrical energy expansion 2006...replacing fossil fuels . Atmos Chem Phys 8 : 389...University Press of Florida , Gainesville ), pp 283...

David M. Lapola; Ruediger Schaldach; Joseph Alcamo; Alberte Bondeau; Jennifer Koch; Christina Koelking; Joerg A. Priess

2010-01-01T23:59:59.000Z

165

Development of Land Use Regression Models for elemental, organic carbon, PAH and hopanes/steranes in 10 ESCAPE/TRANSPHORM European study areas  

Science Journals Connector (OSTI)

Land use regression (LUR) models have been used to model concentrations of mainly traffic related air pollutants (nitrogen oxides (NOx), particulate matter (PM) mass or absorbance). ...

Aleksandra Jedynska; Gerard Hoek; Meng Wang; Marloes Eeftens; Josef Cyrys; Menno Keuken; Christophe Ampe; Rob Beelen; Giulia Cesaroni; Francesco Forastiere; Marta Cirach; Kees de Hoogh; Audrey De Nazelle; Wenche Nystad; Christophe Declercq; Kirsten Thorup Eriksen; Konstantina Dimakopoulou; Timo Lanki; Kees Meliefste; Mark J Nieuwenhuijsen; Tarja Yli-Tuomi; Ole Raaschou-Nielsen; Bert Brunekreef; Ingeborg Kooter

2014-10-15T23:59:59.000Z

166

Indirect land-use changes can overcome carbon savings from biofuels in Brazil  

Science Journals Connector (OSTI)

...multicriteria evaluation of suitability...ethanol and biodiesel fuel production...year) of the biodiesel produced in...more accurate evaluation of the efficacy...soybean as the biodiesel feedstock...analytic hierarchy process (AHP) test...factors. Model Evaluation Crop...

David M. Lapola; Ruediger Schaldach; Joseph Alcamo; Alberte Bondeau; Jennifer Koch; Christina Koelking; Joerg A. Priess

2010-01-01T23:59:59.000Z

167

CERFACS: Scientific Report ``Climate Modelling & Global Change'' Project  

E-Print Network [OSTI]

CERFACS: Scientific Report ``Climate Modelling & Global Change'' Project 1991 ­ 1992 November 1992 #12; 1 INTRODUCTION (O. Thual) The goals of the Climate Modelling & Global Change project of climate experiments with this general circulation model. The Climate Modelling & Global Change project has

168

The relationships between biomass burning, land-cover/use change, and the distribution of carbonaceous aerosols in mainland Southeast Asia: A review and synthesis  

E-Print Network [OSTI]

1 The relationships between biomass burning, land-cover/use change, and the distribution. 793, The Ohio State University March 3, 2007 Biomass burning is a major source of black carbon directly and indirectly. Uncertainty regarding the contribution of biomass burning to the concentration

Shi, Tao

169

Change in Urban Land Use and Associated Attributes in the Upper San Francisco Estuary, 1990-2006  

E-Print Network [OSTI]

Bay watershed. Environmental Management Water Plan Land andwater quality in Georgian Bay. Environmental Management 44(water quality in a coastal river and lagoonal estuary. Environmental Management

Stoms, David M.

2010-01-01T23:59:59.000Z

170

A Conceptual Framework for Estimating Bioenerg-Related Land-Use Change and Its Impacts over Time  

E-Print Network [OSTI]

energy crops, whether corn, soybeans, switchgrass, trees, or something else, inevitably will put pressure on land uses worldwide and bring into cultivation

Delucchi, Mark

2009-01-01T23:59:59.000Z

171

Modeling land surface processes of the midwestern United States : predicting soil moisture under a warmer climate  

E-Print Network [OSTI]

This dissertation seeks to quantify the response of soil moisture to climate change in the midwestern United States. To assess this response, a dynamic global vegetation model, Integrated Biosphere Simulator, was coupled ...

Winter, Jonathan (Jonathan Mark)

2010-01-01T23:59:59.000Z

172

ABSTRACT: Increased riverine nitrogen (N) fluxes have been strongly correlated with land use changes and are now one of the  

E-Print Network [OSTI]

in the Ipswich River basin in Massachusetts and to evaluate the effect of future land use scenarios on the water with the hydrology of the basin are likely to control the magnitude of nitrate loads to the aquatic system and nutrient fluxes from the land surface and soil profile to rivers and then down the river drainage network

Vallino, Joseph J.

173

Coupling GIS and LCA for biodiversity assessments of land use: Part 1: Inventory modeling  

E-Print Network [OSTI]

467 DOI 10.1007/s11367-010-0170-9 LAND USE IN LCA CouplingGIS and LCA for biodiversity assessments of land use Part 1:while life cycle assessment (LCA) does not conventionally

Geyer, Roland; Stoms, David M.; Lindner, Jan P.; Davis, Frank W.; Wittstock, Bastian

2010-01-01T23:59:59.000Z

174

CERFACS: Scientific Report ``Climate Modelling & Global Change'' Project  

E-Print Network [OSTI]

CERFACS: Scientific Report ``Climate Modelling & Global Change'' Project 1992 ­ 1993 October 25 th. The ``Climate Modelling & Global Change'' project has played a key role in this achievement, after two years­of­the art climate model. Based on these actual and potential achievements, the Global Change CERFACS project

175

Population and Climate Change:Population and Climate Change: Coupling Population Models withCoupling Population Models with  

E-Print Network [OSTI]

Coupling Population Models with Earth System ModelsEarth System Models Eugenia Kalnay, Safa Motesharrei, Jorge Rivas Change: Fully Coupling Population and Earth System Models" My research at the U. of Maryland #12

Kalnay, Eugenia

176

MODIS Land Product Subsets  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Validation > MODIS Land Subsets Validation > MODIS Land Subsets MODIS Land Product Subsets Overview Earth, Western Hemisphere The goal of the MODIS Land Product Subsets project is to provide summaries of selected MODIS Land Products for the community to use for validation of models and remote-sensing products and to characterize field sites. Output files contain pixel values of MODIS land products in text format and in GeoTIFF format. In addition, data visualizations (time series plots and grids showing single composite periods) are available. MODIS Land Product Subsets Resources The following MODIS Land Product Subsets resources are maintained by the ORNL DAAC: MODIS Land Products Offered Background Citation Policy Methods and formats MODIS Sinusoidal Grid - Google Earth KMZ Classroom Exercises

177

Water balance in the Amazon basin from a land surface model ensemble  

SciTech Connect (OSTI)

Despite recent advances in modeling and remote sensing of land surfaces, estimates of the global water budget are still fairly uncertain. The objective of this study is to evaluate the water budget of the Amazon basin based on several state-of-the-art land surface model (LSM) outputs. Water budget variables [total water storage (TWS), evapotranspiration (ET), surface runoff (R) and baseflow (B)] are evaluated at the basin scale using both remote sensing and in situ data. Fourteen LSMs were run using meteorological forcings at a 3-hourly time step and 1-degree spatial resolution. Three experiments are performed using precipitation which has been rescaled to match monthly global GPCP and GPCC datasets and the daily HYBAM dataset for the Amazon basin. R and B are used to force the Hydrological Modeling and Analysis Platform (HyMAP) river routing scheme and simulated discharges are compared against observations at 165 gauges. Simulated ET and TWS are compared against FLUXNET and MOD16A2 evapotranspiration, and GRACE TWS estimates in different catchments. At the basin scale, simulated ET ranges from 2.39mm.d-1 to 3.26mm.d-1 and a low spatial correlation between ET and P indicates that evapotranspiration does not depend on water availability over most of the basin. Results also show that other simulated water budget variables vary significantly as a function of both the LSM and precipitation used, but simulated TWS generally agree at the basin scale. The best water budget simulations resulted from experiments using the HYBAM dataset, mostly explained by a denser rainfall gauge network the daily rescaling.

Getirana, Augusto; Dutra, Emanuel; Guimberteau, Matthieu; Kam, Jonghun; Li, Hongyi; Decharme, Bertrand; Zhang, Zhengqiu J.; Ducharne, Agnes; Boone, Aaron; Balsamo, Gianpaolo; Rodell, Matthew; Mounirou Toure, Ally; Xue, Yongkang; Peters-Lidard, Christa D.; Kumar, Sujay V.; Arsenault, Kristi Rae; Drapeau, Guillaume; Leung, Lai-Yung R.; Ronchail, Josyane; Sheffield, Justin

2014-12-06T23:59:59.000Z

178

Using continuous GPS and absolute gravity to separate vertical land movements and changes in sea-level at tide-gauges in the UK  

Science Journals Connector (OSTI)

...Gauss-Markov model for the coloured noise (Van Camp et al. 2004). 4. Vertical land movements...9-12 September 2003, p. 12. Van Camp, M , S.D.P Williams, and O Francis2004Precision...sea-level that have occurred over the last century or so. However, such estimates are a...

2006-01-01T23:59:59.000Z

179

A Physically Based Runoff Routing Model for Land Surface and Earth System Models  

Science Journals Connector (OSTI)

A new physically based runoff routing model, called the Model for Scale Adaptive River Transport (MOSART), has been developed to be applicable across local, regional, and global scales. Within each spatial unit, surface runoff is first routed ...

Hongyi Li; Mark S. Wigmosta; Huan Wu; Maoyi Huang; Yinghai Ke; Andr M. Coleman; L. Ruby Leung

2013-06-01T23:59:59.000Z

180

Precipitation response to land subsurface hydrologic processes in atmospheric general circulation model simulations  

E-Print Network [OSTI]

the ascending branch of the Hadley circulation. This processprecipitation. [ 18 ] The Hadley circulation over land (ascending branch of the Hadley circulation in the Northern

Lo, Min-Hui; Famiglietti, James S

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "land change modeler" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Environmental policy implications of working from home: Modelling the impacts of land-use, infrastructure and socio-demographics  

Science Journals Connector (OSTI)

Working from home is generally perceived as an effective means of reducing energy use and associated pollution from commuter transport. In order to consider the merits of mechanisms and policies to support a change in behaviour that results in greater take-up of home working, this paper applies energy consumption per commute calculations and a logit model using a case study of Ireland. In marked contrast with larger countries, the energy consumption per commute is relatively low in Ireland. Nonetheless, the analysis indicates that, on average, at least an average net saving of 9.33kWh per day can be achieved where an individual converts to working from home, after deducting the home energy consumption associated with home working. We find that land use patterns, public transport networks, internet infrastructure, commute distances and socio-demographic characteristics can serve to influence rates of home working. Encouraging the higher and lower professional categories and those in the service sectors to work from home should be the highest priority in terms of energy and emissions reductions. Increased coverage of internet services and railway coverage will support higher rates of home working. Increased dispersion of residential, commercial and industrial areas serves to encourage greater home working.

Miao Fu; J. Andrew Kelly; J. Peter Clinch; Fearghal King

2012-01-01T23:59:59.000Z

182

The agroecological matrix as alternative to the land-sparing/agriculture intensification model  

Science Journals Connector (OSTI)

...dilemma. The sort of high-energy-demanding, chemically intensive...been well-established that energy efficiency in traditional and...to be achieved through a land reform that redistributes land that is in the...2003 ) Forest transitions in Mexico: Institutions and forests in a globalized countryside...

Ivette Perfecto; John Vandermeer

2010-01-01T23:59:59.000Z

183

Modeling the Changing Earth System: Prospects and Challenges  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Bill Collins Modeling the Changing Earth System: Prospects and Challenges February 4, 2014 Bill Collins, Berkeley Lab Downloads CollinSNERSCUG020514.pdf | Adobe Acrobat PDF file...

184

Response of Free-Living Nitrogen-Fixing Microorganisms to Land Use Change in the Amazon Rainforest  

Science Journals Connector (OSTI)

...three different land use systems in the Amazon. Each...important implications for restoration of degraded areas since...The prokaryotes. A handbook on the biology of bacteria...Does disturbance and restoration of alpine grassland...in temperate cropping systems: influence of nitrogen...

Babur S. Mirza; Chotima Potisap; Klaus Nsslein; Brendan J. M. Bohannan; Jorge L. M. Rodrigues

2013-10-25T23:59:59.000Z

185

Modeling the Impact of Warming in Climate Change Economics  

E-Print Network [OSTI]

Any economic analysis of climate change policy requires some model that describes the impact of warming on future GDP and consumption. Most integrated assessment models (IAMs) relate temperature to the level of real GDP ...

Pindyck, Robert S.

186

Climate Change Science Program Issues Report on Climate Models | Department  

Broader source: Energy.gov (indexed) [DOE]

Climate Change Science Program Issues Report on Climate Models Climate Change Science Program Issues Report on Climate Models Climate Change Science Program Issues Report on Climate Models July 31, 2008 - 2:40pm Addthis WASHINGTON, DC - The U.S. Climate Change Science Program (CCSP) today announced the release of the report "Climate Models: An Assessment of Strengths and Limitations," the 10th in a series of 21 Synthesis and Assessment Products (SAPs) managed by U.S. federal agencies. Developed under the leadership of the U.S. Department of Energy (DOE), this report, SAP 3.1, describes computer models of the Earth's climate and their ability to simulate current climate change. "Complex climate models are tools that provide insights and knowledge into how future climate may evolve. To assure that future climate projections

187

Towards a Model of Systemic Change in University STEM Education  

E-Print Network [OSTI]

Despite numerous calls for the transformation of undergraduate STEM education, there is still a lack of successful models for creating large-scale, systemic cultural changes in STEM departments. To date, change efforts have generally focused on one of three areas: developing reflective teachers, disseminating curricula and pedagogy, or enacting institutional policy. These efforts illustrate many of the challenges of departmental change; in particular, they highlight the need for a holistic approach that integrates across all three of these levels: individual faculty, whole departments, and university policymakers. To address these challenges, as part of our campus-wide AAU-sponsored effort in STEM education transformation, we import and integrate models of change from multiple perspectives. We draw from models in organizational change, from departmental and disciplinary change in STEM education, and from efforts to support individual efforts such as the development and dissemination model. As a result, our de...

Reinholz, Daniel L; Dancy, Melissa H; Finkelstein, Noah; Deetz, Stanley

2014-01-01T23:59:59.000Z

188

Post-doctoral Position Title Quantify the net global climate impacts of past and future land-  

E-Print Network [OSTI]

objective is to make this protocol widely available so that other earth system modeling groups outside uses and land use changes in global earth system models, and test the impact of various implementation

Pouyanne, Nicolas

189

Development and assessment of a 250m spatial resolution MODIS annual land cover time series (20002011) for the forest region of Canada derived from change-based updating  

Science Journals Connector (OSTI)

Abstract Detailed information on the spatial and temporal distribution of land cover is required to evaluate the effects of land cover change on environmental processes. The development of temporally consistent land cover time series (LCTS) from satellite-based earth observation has proven difficult because multi-year observations are acquired under different conditions resulting in high inter-annual reflectance variability. This leads to spurious differences in land cover when standard approaches for image classification are applied to generate multi-year land cover data. To reduce this effect, a common solution has been to first detect change and update a base map for only these change areas. As long as the change commission error is low, this approach will ensure high consistency between maps in the time series. Here we present an approach for change-based LCTS development following from previous research, but with significant advancements in change detection, training, classification, and evidence-based refinement. The method was applied to generate an annual LCTS covering Canada spanning 20002011 that is consistent between years and can be used to identify dominant change transitions. Assessment of the LCTS was challenging because multiple maps needed to be evaluated and can be prohibitive particularly for annual time series covering several years. Three approaches were undertaken involving visual examination, comparison with a reference sample derived from Landsat, and comparison with the MODIS Global LCTS V5.1. Visual assessment revealed high inter-map consistency and logical temporal change trajectories of land cover classes. Comparison with the reference sample showed an accuracy of 70% at the 19 class thematic resolution. Accounting for mixed pixels by considering the first or second reference land cover label as correct increased the accuracy to 80%. Comparison with the MODIS Global LCTS showed that the Canada LCTS achieved higher inter-map consistency and accuracy as expected with national relative to global land cover products.

Darren Pouliot; Rasim Latifovic; Natalie Zabcic; Luc Guindon; Ian Olthof

2014-01-01T23:59:59.000Z

190

Dyna-CLUE Model Improvement Based on Exponential Smoothing Method and Land Use Dynamic Simulation  

Science Journals Connector (OSTI)

Response variables and their driving factors often vary with time in the process of land use dynamic simulation; however, there are few existing literatures mentioned it.In order to evaluate the impact of time fa...

Minghao Liu; Yaoxing Wang; Donghong Li

2013-01-01T23:59:59.000Z

191

How can we use MODIS land surface temperature to validate long-term urban model simulations?  

E-Print Network [OSTI]

of Moderate Resolution Imaging Spectroradiometer (MODIS) data and simulations from the High-Resolution Land Data Assimilation System (HRLDAS) over Greater Houston, Texas, U.S. For the satellite cloud mask (SCM) method, prior to comparison, the cloud mask...

Hu, Leiqiu; Brunsell, Nathaniel A.; Monaghan, Andrew J.; Barlage, Michael; Wilhelmi, Olga V.

2014-03-27T23:59:59.000Z

192

SEESM: Scalable Extensible Earth System Model for Climate Change Science |  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

SEESM: Scalable Extensible Earth System Model for Climate Change Science SEESM: Scalable Extensible Earth System Model for Climate Change Science SEESM: Scalable Extensible Earth System Model for Climate Change Science This SciDAC project will transform an existing, state-of-the-science, third-generation global climate model, the Community Climate System Model (CCSM3), into a first-generation Earth system model that fully simulates the relationships between the physical, chemical, and bio-geochemical processes in the climate system. The model will incorporate new processes necessary to predict future climates based on the specification of greenhouse gas emissions rather than specification of atmospheric concentrations, as is done in present models, which make assumptions about the carbon cycle that are likely not valid. This project will include comprehensive treatments of the processes

193

Study of Climate Change Impact on Flood Frequencies: A Combined Weather Generator and Hydrological Modeling Approach  

Science Journals Connector (OSTI)

Climate change is expected to lead to more frequent and intensive flooding problems for watersheds in the south part of China. This study presented a coupled Long Ashton Research Station Weather Generator (LARS-WG) and Semidistributed Land Use...

X. S. Qin; Y. Lu

2014-06-01T23:59:59.000Z

194

Predicting Land-Ice Retreat and Sea-Level Rise with the Community Earth System Model  

SciTech Connect (OSTI)

Coastal stakeholders need defensible predictions of 21st century sea-level rise (SLR). IPCC assessments suggest 21st century SLR of {approx}0.5 m under aggressive emission scenarios. Semi-empirical models project SLR of {approx}1 m or more by 2100. Although some sea-level contributions are fairly well constrained by models, others are highly uncertain. Recent studies suggest a potential large contribution ({approx}0.5 m/century) from the marine-based West Antarctic Ice Sheet, linked to changes in Southern Ocean wind stress. To assess the likelihood of fast retreat of marine ice sheets, we need coupled ice-sheet/ocean models that do not yet exist (but are well under way). CESM is uniquely positioned to provide integrated, physics based sea-level predictions.

Lipscomb, William [Los Alamos National Laboratory

2012-06-19T23:59:59.000Z

195

Three Essays on Climate Change Impacts, Adaptation and Mitigation in Agriculture  

E-Print Network [OSTI]

regionally detailed dynamic land allocation model is developed and applied for studying interrelationships between limited natural resources (e.g. land and groundwater), climate change, bioenergy demands and agricultural production. We find out...

Wang, Wei Wei

2012-10-19T23:59:59.000Z

196

CLOUD MODELING CHALLENGES FOR CLIMATE CHANGE SIMULATION  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

OF ENTRAINMENT IN THE OF ENTRAINMENT IN THE DIURNAL TRANSITION FROM SHALLOW TO DEEP CONVECTION Tony Del Genio and Jingbo Wu NASA/GISS ARM Science Team Meeting, 3/31/09 Continental rainfall rates tend to peak in mid-late afternoon or evening Time of peak rainfall, TRMM PR Hirose et al. (2008) But not in GCMs, which like to rain near noon ___ TRMM 3B42 - - - gauge colors = models IPCC AR4 models (Dai, 2006) Some recent studies * Derbyshire et al. (2004): SCMs insensitive to tropospheric humidity * Grabowski et al. (2006): Need entrainment rate to decrease with time of day * Kuang and Bretherton (2006): Weaker entrainment rates for deep than for shallow convection - increasing parcel size as cold pools form? * Khairoutdinov and Randall (2006): Demonstration of downdraft/cold pool role in transition from shallow to deep

197

The global change research center atmospheric chemistry model  

SciTech Connect (OSTI)

This work outlines the development of a new model of the chemistry of the natural atmosphere. The model is 2.5-dimensional, having spatial coordinates height, latitude, and, the half-dimension, land and ocean. The model spans both the troposphere and stratosphere, although the troposphere is emphasized and the stratosphere is simple and incomplete. The chemistry in the model includes the O{sub x}, HO{sub x}, NO{sub x}, and methane cycles in a highly modular fashion which allows model users great flexibility in selecting simulation parameters. A detailed modeled sensitivity analysis is also presented. A key aspect of the model is its inclusion of clouds. The model uses current understanding of the distribution and optical thickness of clouds to determine the true radiation distribution in the atmosphere. As a result, detailed studies of the radiative effects of clouds on the distribution of both oxidant concentrations and trace gas removal are possible. This work presents a beginning of this study with model results and discussion of cloud effects on the hydroxyl radical.

Moraes, F.P. Jr.

1995-01-01T23:59:59.000Z

198

Modeling Water Resource Systems under Climate Change: IGSM-WRS  

E-Print Network [OSTI]

Through the integration of a Water Resource System (WRS) component, the MIT Integrated Global System Model (IGSM) framework has been enhanced to study the effects of climate change on managed water-resource systems. ...

Strzepek, K.

199

A Framework for Modeling Uncertainty in Regional Climate Change  

E-Print Network [OSTI]

In this study, we present a new modeling framework and a large ensemble of climate projections to investigate the uncertainty in regional climate change over the US associated with four dimensions of uncertainty. The sources ...

Monier, Erwan

200

Technology and Technical Change in the MIT EPPA Model  

E-Print Network [OSTI]

Potential technology change has a strong influence on projections of greenhouse gas emissions and costs of control, and computable general equilibrium (CGE) models are a common device for studying these phenomena. Using ...

Jacoby, Henry D.

Note: This page contains sample records for the topic "land change modeler" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

Constraining Climate Model Parameters from Observed 20th Century Changes  

E-Print Network [OSTI]

We present revised probability density functions for climate model parameters (effective climate sensitivity, the rate of deep-ocean heat uptake, and the strength of the net aerosol forcing) that are based on climate change ...

Forest, Chris Eliot

202

Amazon Deforestation and Climate Change in a Coupled Model Simulation  

Science Journals Connector (OSTI)

The effects of Amazon deforestation on climate change are investigated using twin numerical experiments of an atmospheric general circulation model (AGCM) with prescribed global sea surface temperature and the same AGCM coupled to an ocean GCM (...

Paulo Nobre; Marta Malagutti; Domingos F. Urbano; Roberto A. F. de Almeida; Emanuel Giarolla

2009-11-01T23:59:59.000Z

203

Biomechanical and Neuromuscular Changes in Jump Landings Due to Short or Long Term Ankle Bracing and Fatigue.  

E-Print Network [OSTI]

??In order to prevent ankle sprain, prophylactic ankle bracing is common practice for many sports. The purpose of this dissertation was to investigate changes in (more)

Stafford, Elizabeth Decatur

2012-01-01T23:59:59.000Z

204

Archaeology in the Kilauea East Rift Zone: Part 1, Land-use model and research design, Kapoho, Kamaili and Kilauea Geothermal Subzones, Puna District, Hawaii Island  

SciTech Connect (OSTI)

The Puna Geothermal Resource Subzones (GRS) project area encompasses approximately 22,000 acres centered on the Kilauea East Rift Zone in Puna District, Hawaii Island. The area is divided into three subzones proposed for geothermal power development -- Kilauea Middle East Rift, Kamaili and Kapoho GRS. Throughout the time of human occupation, eruptive episodes along the rift have maintained a dynamic landscape. Periodic volcanic events, for example, have changed the coastline configuration, altered patterns of agriculturally suitable sediments, and created an assortment of periodically active, periodically quiescent, volcanic hazards. Because of the active character of the rift zone, then, the area`s occupants have always been obliged to organize their use of the landscape to accommodate a dynamic mosaic of lava flow types and ages. While the specific configuration of settlements and agricultural areas necessarily changed in response to volcanic events, it is possible to anticipate general patterns in the manner in which populations used the landscape through time. This research design offers a model that predicts the spatial results of long-term land-use patterns and relates them to the character of the archaeological record of that use. In essence, the environmental/land-use model developed here predicts that highest population levels, and hence the greatest abundance and complexity of identifiable prehistoric remains, tended to cluster near the coast at places that maximized access to productive fisheries and agricultural soils. With the possible exception of a few inland settlements, the density of archaeological remains expected to decrease with distance from the coastline. The pattern is generally supported in the regions existing ethnohistoric and archaeological record.

Burtchard, G.C.; Moblo, P. [International Archaeological Research Inst., Inc., Honolulu, HI (United States)

1994-07-01T23:59:59.000Z

205

Lands & Community  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

& Community Transmission Tower Software Public Comments Lands & Community Bonneville Power Administration owns and maintains hundreds of properties in Oregon, Washington,...

206

One-way coupling of an integrated assessment model and a water resources model: evaluation and implications of future changes over the US Midwest  

SciTech Connect (OSTI)

An integrated model is being developed to advance our understanding of the interactions between human activities, terrestrial system and water cycle, and how system interactions will be affected by a changing climate at the regional scale. As a first step towards that goal, a global integrated assessment model including a waterdemand model is coupled offline with a land surface hydrology routing water resources management model. A spatial and temporal disaggregation approach is developed to project the annual regional water demand simulations into a daily time step and subbasin representation. The model demonstrated reasonable ability to represent the historical flow regulation and water supply over the Midwest (Missouri, Upper Mississippi and Ohio). Implications for the future flow regulation, water supply and supply deficit are investigated using a climate change projection with the B1 emission scenario which affects both natural flow and water demand. Over the Midwest, changes in flow regulation are mostly driven by the change in natural flow due to the limited storage capacity over the Ohio and Upper Mississippi river basins. The changes in flow and demand have a combined effect on the Missouri Summer regulated flow. The supply deficit tends to be driven by the change in flow over the region. Spatial analysis demonstrates the relationship between the supply deficit and the change in demand over urban areas not along a main river or with limited storage, and over areas upstream of groundwater dependent fields with therefore overestimated demand.

Voisin, Nathalie; Liu, Lu; Hejazi, Mohamad I.; Tesfa, Teklu K.; Li, Hongyi; Huang, Maoyi; Liu, Ying; Leung, Lai-Yung R.

2013-11-18T23:59:59.000Z

207

Sensitivity of Surface Flux Simulations to Hydrologic Parameters Based on an Uncertainty Quantification Framework Applied to the Community Land Model  

SciTech Connect (OSTI)

Uncertainties in hydrologic parameters could have significant impacts on the simulated water and energy fluxes and land surface states, which will in turn affect atmospheric processes and the carbon cycle. Quantifying such uncertainties is an important step toward better understanding and quantification of uncertainty of integrated earth system models. In this paper, we introduce an uncertainty quantification (UQ) framework to analyze sensitivity of simulated surface fluxes to selected hydrologic parameters in the Community Land Model (CLM4) through forward modeling. Thirteen flux tower footprints spanning a wide range of climate and site conditions were selected to perform sensitivity analyses by perturbing the parameters identified. In the UQ framework, prior information about the parameters was used to quantify the input uncertainty using the Minimum-Relative-Entropy approach. The quasi-Monte Carlo approach was applied to generate samples of parameters on the basis of the prior pdfs. Simulations corresponding to sampled parameter sets were used to generate response curves and response surfaces and statistical tests were used to rank the significance of the parameters for output responses including latent (LH) and sensible heat (SH) fluxes. Overall, the CLM4 simulated LH and SH show the largest sensitivity to subsurface runoff generation parameters. However, study sites with deep root vegetation are also affected by surface runoff parameters, while sites with shallow root zones are also sensitive to the vadose zone soil water parameters. Generally, sites with finer soil texture and shallower rooting systems tend to have larger sensitivity of outputs to the parameters. Our results suggest the necessity of and possible ways for parameter inversion/calibration using available measurements of latent/sensible heat fluxes to obtain the optimal parameter set for CLM4. This study also provided guidance on reduction of parameter set dimensionality and parameter calibration framework design for CLM4 and other land surface models under different hydrologic and climatic regimes.

Hou, Zhangshuan; Huang, Maoyi; Leung, Lai-Yung R.; Lin, Guang; Ricciuto, Daniel M.

2012-08-10T23:59:59.000Z

208

Toward an Earth System Modeling Approach to Simulate Irrigation...  

Office of Science (SC) Website

the Community Land Model version 4 (CLM4) against observations from agricultural census data, improving the model's simulations of hydrological changes resulting from irrigation...

209

Impacts of Climate Change and the End of Deforestation on Land Use in the Brazilian Legal Amazon  

Science Journals Connector (OSTI)

Climate change scenarios vary considerably over the Amazon region, with an extreme scenario projecting a dangerous (from the human perspective) increase of 3.8C in temperature and 30% reduction in precipitation by 2050. The impacts of such ...

David Montenegro Lapola; Ruediger Schaldach; Joseph Alcamo; Alberte Bondeau; Siwa Msangi; Joerg A. Priess; Rafaella Silvestrini; Britaldo Silveira Soares-Filho

2011-05-01T23:59:59.000Z

210

The aesthetics of water and land: a promising concept for managing scarce water resources under climate change  

Science Journals Connector (OSTI)

...approach to water management Any strategy for managing...change) and the water demand side (e.g. adaptive...sustainable water management in the Jordan River...underestimation of the demand side of water management. Since fresh water...

2010-01-01T23:59:59.000Z

211

Potential carbon mitigation and income in developing countries from changes in use and management of agricultural and forest lands  

Science Journals Connector (OSTI)

...Brown, S. 1997 Estimating biomass and biomass change of tropical forests...global outlook for future wood supply from forest plantations. Working Paper no. GFPOS...information systems to estimate biomass density of tropical forests...

2002-01-01T23:59:59.000Z

212

Biofuels and land-use changes: searching for the top model  

Science Journals Connector (OSTI)

...approach. Biofuel life cycle assessment (LCA) calculations are based on attribution...Applying a consequential approach to calculate LCA emissions for fossil fuels, for example...technological developments, a consequential LCA would find lower emissions. The discussion...

2011-01-01T23:59:59.000Z

213

Integrated science model for assessment of climate change  

SciTech Connect (OSTI)

Integrated assessment models are intended to represent processes that govern physical, ecological, economic and social systems. This report describes a scientific model relating emissions to global temperature and sea level. This model is intended to be one component of an integrated assessment model which is, of course, much more comprehensive. The model is able to reproduce past changes in CO{sub 2} concentration, global temperature, and sea level. The model is used to estimate the emissions rates required to lead to stabilization of CO{sub 2} at various levels. The model is also used to estimate global temperature rise, the rate of temperature change, and sea level rise driven by IPCC emissions scenarios. The emission of fossil fuel CO{sub 2} is modeled to have the largest long term effect on climate. Results do show the importance of expected changes of trace greenhouse gases other than CO{sub 2} in the near future. Because of the importance of these other trace gases, further work is recommended to more accurately estimate their effects.

Jain, A.K.; Wuebbles, D.J. [Lawrence Livermore National Lab., CA (United States); Kheshgi, H.S. [Exxon Research and Engineering Co., Annandale, NJ (United States)

1994-04-01T23:59:59.000Z

214

Conclusion: applying South East Asia Rainforest Research Programme science to land-use management policy and practice in a changing landscape and climate  

Science Journals Connector (OSTI)

...the integrity of the science and the same freedom...automatically reach land management decision-makers and...plantations. The SEARRP approach of addressing much of the science at Danum in part to key land management and ecosystem services...

2011-01-01T23:59:59.000Z

215

Mediterranean land abandonment and associated biomass variation.  

E-Print Network [OSTI]

??Biomass is an important factor in environmental processes, such as erosion, carbon storage, climate change and land degradation. Human-induced changes in plant community systems and (more)

Hoogeveen, S.S.

2011-01-01T23:59:59.000Z

216

Climate and Land Use Change Processes in East Africa While some regions of East Africa are being preserved as natural areas, others, including the  

E-Print Network [OSTI]

at Michigan State University in the Climate-Land Interaction Project (CLIP) . The overall objective of the project is to establish the mechanisms that determine how climate and land use (primarily in the human of climate to land use, a prerequisite for the potential of feedback. #12;Rationale This project will address

217

The influence of land-use change and landscape dynamics on the climate system: relevance to climate-change policy beyond the radiative effect of greenhouse gases  

Science Journals Connector (OSTI)

...to anthropogenic aerosols, solar variation and several of the...28 Guatemala 2 542 32 731 0 Mexico 2 441 20 11 110 30 Belize 1...changes the partitioning of solar insolation into its sensible...Earth's surface, QS is the solar irradiance, A is the surface...

2002-01-01T23:59:59.000Z

218

Changes in soil organic carbon storage predicted by Earth system models during the 21st century  

E-Print Network [OSTI]

carbon changes in Earth system models K. E. O. Todd-Brown etcarbon changes in Earth system models K. E. O. Todd-Brown etcarbon changes in Earth system models K. E. O. Todd-Brown et

2013-01-01T23:59:59.000Z

219

NERSC Calculations Provide Independent Confirmation of Global Land Warming  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Calculations Calculations Provide Independent Confirmation of Global Land Warming Since 1901 NERSC Calculations Provide Independent Confirmation of Global Land Warming Since 1901 September 9, 2013 | Tags: Climate Research, Hopper Contact: Jon Bashor, jbashor@lbl.gov, 510-486-5849 campo.jpg These maps show the changes in air temperatures over land as measured using thermometers (left side) and as calculated by the 20th Century Reanalysis project (left side). While more than 80 percent of the observed variation is captured by the computer model, the results show interesting differences in some regions such as the midwestern United States, Argentina and eastern Brazil. The differences may be due previously unrecognized issues with the pressure observations, variations in land use and land cover over time,

220

Forest cover, carbon sequestration, and wildlife habitat: policy review and modeling of tradeoffs among land-use  

E-Print Network [OSTI]

Forest cover, carbon sequestration, and wildlife habitat: policy review and modeling of tradeoffs and services, including timber production, carbon sequestration and storage, scenic amenities, and wildlife habitat. International efforts to mitigate climate change through forest carbon sequestration

Rissman, Adena

Note: This page contains sample records for the topic "land change modeler" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

Should we believe model predictions of future climate change?  

E-Print Network [OSTI]

equations are derived from first principles (e.g. equations of motion, and conservation of energy, mass deficiencies in the attempt to provide useful information to the public and policy-makers. Keywords: climate to communicate what we know and what is uncertain about future climate change? Why are climate model projections

Fischlin, Andreas

222

Regional-Scale Climate Change: Observations and Model Simulations  

SciTech Connect (OSTI)

This collaborative proposal addressed key issues in understanding the Earth??s climate system, as highlighted by the U.S. Climate Science Program. The research focused on documenting past climatic changes and on assessing future climatic changes based on suites of global and regional climate models. Geographically, our emphasis was on the mountainous regions of the world, with a particular focus on the Neotropics of Central America and the Hawaiian Islands. Mountain regions are zones where large variations in ecosystems occur due to the strong climate zonation forced by the topography. These areas are particularly susceptible to changes in critical ecological thresholds, and we conducted studies of changes in phonological indicators based on various climatic thresholds.

Raymond S. Bradley; Henry F. Diaz

2010-12-14T23:59:59.000Z

223

Influence of Dynamic Land Use and Land Cover Change on Simulated Global Terrestrial Carbon and Nitrogen Cycles, Climate-carbon Cycle Feedbacks, and Interactions with Rising CO2 and Anthropogenic Nitrogen Deposition  

SciTech Connect (OSTI)

Previous work has demonstrated the sensitivity of terrestrial net carbon exchange to disturbance history and land use patterns at the scale of individual sites or regions. Here we show the influence of land use and land cover dynamics over the historical period 1850-present on global-scale carbon, nutrient, water, and energy fluxes. We also explore the spatial and temporal details of interactions among land use and disturbance history, rising atmospheric carbon dioxide consentation, and increasing anthropogenic nitrogen deposition. Our simulations show that these interactions are significant, and that their importance grows over time, expressed as a fraction of the independent forcing terms. We conclude with an analysis of the influence of these interactions on the sign and magnitude of global climate-carbon cycle feedbacks.

Thornton, Peter E [ORNL; Hoffman, Forrest M [ORNL; Hurtt, George C [University of Hew Hampshire

2009-12-01T23:59:59.000Z

224

COLLABORATIVE RESEARCH: TOWARDS ADVANCED UNDERSTANDING AND PREDICTIVE CAPABILITY OF CLIMATE CHANGE IN THE ARCTIC USING A HIGH-RESOLUTION REGIONAL ARCTIC CLIMATE SYSTEM MODEL  

SciTech Connect (OSTI)

The motivation for this project was to advance the science of climate change and prediction in the Arctic region. Its primary goals were to (i) develop a state-of-the-art Regional Arctic Climate system Model (RACM) including high-resolution atmosphere, land, ocean, sea ice and land hydrology components and (ii) to perform extended numerical experiments using high performance computers to minimize uncertainties and fundamentally improve current predictions of climate change in the northern polar regions. These goals were realized first through evaluation studies of climate system components via one-way coupling experiments. Simulations were then used to examine the effects of advancements in climate component systems on their representation of main physics, time-mean fields and to understand variability signals at scales over many years. As such this research directly addressed some of the major science objectives of the BER Climate Change Research Division (CCRD) regarding the advancement of long-term climate prediction.

Gutowski, William J.

2013-02-07T23:59:59.000Z

225

An OWL2 Land Use Ontology: LBCS  

Science Journals Connector (OSTI)

This paper describes the Land Based Classification Standards (LBCS) OWL2 ontology used as a basic structure for the City Information Modelling (CIM) model developed within a larger research project ... Land u...

Nuno Montenegro; Jorge Gomes; Paulo Urbano

2011-01-01T23:59:59.000Z

226

LBA Land Use and Land Cover Data Set Released  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

LBA Land Use and Land Cover Data Sets Released LBA Land Use and Land Cover Data Sets Released The ORNL DAAC announces the release of two image data sets from the Land Use and Land Cover science theme (LC-15 team), a component of the LBA-ECO Large Scale Biosphere-Atmosphere Experiment in Amazonia (LBA). LBA-ECO LC-15 SRTM30 Digital Elevation Model Data, Amazon Basin: 2000 . Data set prepared by S. Saatchi. This data set provides a subset of the SRTM30 Digital Elevation Model (DEM) elevation and standard deviation data (STD of the data points used in the averaging) for the Amazon Basin. SRTM30 is a near-global digital elevation model (DEM) comprising a combination of data from the Shuttle Radar Topography Mission (SRTM), flown in February, 2000, and the earlier U.S. Geological Survey's GTOPO30 data set.

227

A physical model to estimate snowfall over land using AMSU-B observations  

E-Print Network [OSTI]

. Weinman,3 W. S. Olson,4,5 D.-E. Chang,6 G. Skofronick-Jackson,7 and J. R. Wang7 Received 26 February 2007.-J., J. A. Weinman, W. S. Olson, D.-E. Chang, G. Skofronick-Jackson, and J. R. Wang (2008), A physical; Skofronick-Jackson et al., 2004; Liu, 2004; Noh et al., JOURNAL OF GEOPHYSICAL RESEARCH, VOL. 113, D09201

Houze Jr., Robert A.

228

THE CARBON-LAND MODEL INTERCOMPARISON PROJECT (C-LAMP): A PROTOTYPE FOR COUPLED BIOSPHERE-ATMOSPHERE MODEL  

E-Print Network [OSTI]

often referred to as Earth System Models (ESMs). While a number of terrestrial and ocean carbon models

Hoffman, Forrest M.

229

SciTech Connect: Development of a land ice core for the Model...  

Office of Scientific and Technical Information (OSTI)

AC52-06NA25396 Resource Type: Conference Resource Relation: Conference: Community Earth System Model Workshop ; 2012-06-18 - 2012-06-21 ; Breckenridge, Colorado, United...

230

Using NASA Remote Sensing Data to Reduce Uncertainty of Land-Use Transitions in Global Carbon-Climate Models: Data Management Plan  

E-Print Network [OSTI]

-use transitions and their inherent uncertainty. Our plan for managing these datasets includes quality assessmentUsing NASA Remote Sensing Data to Reduce Uncertainty of Land-Use Transitions in Global Carbon-Climate Models: Data Management Plan L. Chini, G.C. Hurtt, M. Hansen, and P. Potapov Department of Geography

231

Harmonization of Land-Use Scenarios for the Period 1500-2100: 600 Years of Global Gridded Annual Land-Use Transitions, Wood Harvest, and Resulting Secondary Lands  

SciTech Connect (OSTI)

In preparation for the fifth Assessment Report (AR5) of the Intergovernmental Panel on Climate Change (IPCC), the international community is developing new advanced Earth System Models (ESM) to assess the combined effects of human activities (e.g. land use and fossil fuel emissions) on the carbon-climate system. In addition, four Representative Concentration Pathway (RCP) scenarios of the future (2005-2100) are being provided by four Integrated Assessment Model (IAM) teams to be used as input to the ESMs for future carbon-climate projections (Moss et al., 2010). The diversity of approaches and requirements among IAMs and ESMs for tracking land-use change, along with the dependence of model projections on land-use history, presents a challenge for effectively passing data between these communities and for smoothly transitioning from the historical estimates to future projections. Here, a harmonized set of land-use scenarios are presented that smoothly connects historical reconstructions of land use with future projections, in the format required by ESMs.

Hurtt, George; Chini, Louise Parsons; Frolking, Steve; Betts, Richard; Feddema, Johannes; Fischer, Gavin M.; Fisk, J.P.; Hibbard, Kathleen A.; Houghton, R. A.; Janetos, Anthony C.; Jones, C.; Kindermann, G.; Kinoshita, Tsuguki; Goldeweijk, Kees K.; Riahi, Keywan; Shevliakova, Elena; Smith, Steven J.; Stehfest, Eike; Thomson, Allison M.; Thornton, P.; Van Vuuren, Detlef; Wang, Y.

2011-08-08T23:59:59.000Z

232

The influence of the land surface on hydrometeorology and ecology: new advances from modeling and satellite  

E-Print Network [OSTI]

and satellite remote sensing Venkat Lakshmi, Seungbum Hong, Eric E. Small and Fei Chen ABSTRACT The importance role in climate and weather modeling. However, their quantification has been challenging due temperature (TSK), and vegetation water content (VegWC) derived from satellite sensors such as Moderate

Small, Eric

233

The effect of soil hydraulic properties vs. soil texture in land surface models  

E-Print Network [OSTI]

. E. Small Department of Geology, University of Colorado, Boulder, Colorado, USA Received 26 October (SHPs) is not well known. This study focuses on the effect of SHP selection on modeled surface fluxes in a large SHP database. Within most STCs, the outputs have a range of 350 Wm?2 for latent and sensible heat

Small, Eric

234

Comparing land use regression and dispersion modelling to assess residential exposure to ambient air pollution for epidemiological studies  

Science Journals Connector (OSTI)

AbstractBackground Land-use regression (LUR) and dispersion models (DM) are commonly used for estimating individual air pollution exposure in population studies. Few comparisons have however been made of the performance of these methods. Objectives Within the European Study of Cohorts for Air Pollution Effects (ESCAPE) we explored the differences between LUR and DM estimates for NO2, PM10 and PM2.5. Methods The ESCAPE study developed LUR models for outdoor air pollution levels based on a harmonised monitoring campaign. In thirteen ESCAPE study areas we further applied dispersion models. We compared LUR and DM estimates at the residential addresses of participants in 13 cohorts for NO2; 7 for PM10 and 4 for PM2.5. Additionally, we compared the DM estimates with measured concentrations at the 2040 ESCAPE monitoring sites in each area. Results The median Pearson R (range) correlation coefficients between LUR and DM estimates for the annual average concentrations of NO2, PM10 and PM2.5 were 0.75 (0.190.89), 0.39 (0.230.66) and 0.29 (0.220.81) for 112,971 (13 study areas), 69,591 (7) and 28,519 (4) addresses respectively. The median Pearson R correlation coefficients (range) between DM estimates and ESCAPE measurements were of 0.74 (0.090.86) for NO2; 0.58 (0.360.88) for PM10 and 0.58 (0.390.66) for PM2.5. Conclusions LUR and dispersion model estimates correlated on average well for NO2 but only moderately for PM10 and PM2.5, with large variability across areas. DM predicted a moderate to large proportion of the measured variation for NO2 but less for PM10 and PM2.5.

Kees de Hoogh; Michal Korek; Danielle Vienneau; Menno Keuken; Jaakko Kukkonen; Mark J. Nieuwenhuijsen; Chiara Badaloni; Rob Beelen; Andrea Bolignano; Giulia Cesaroni; Marta Cirach Pradas; Josef Cyrys; John Douros; Marloes Eeftens; Francesco Forastiere; Bertil Forsberg; Kateryna Fuks; Ulrike Gehring; Alexandros Gryparis; John Gulliver; Anna L Hansell; Barbara Hoffmann; Christer Johansson; Sander Jonkers; Leena Kangas; Klea Katsouyanni; Nino Knzli; Timo Lanki; Michael Memmesheimer; Nicolas Moussiopoulos; Lars Modig; Gran Pershagen; Nicole Probst-Hensch; Christian Schindler; Tamara Schikowski; Dorothee Sugiri; Oriol Teixid; Ming-Yi Tsai; Tarja Yli-Tuomi; Bert Brunekreef; Gerard Hoek; Tom Bellander

2014-01-01T23:59:59.000Z

235

Effects of Soil Moisture on the Responses of Soil Temperatures to Climate Change in Cold Regions  

Science Journals Connector (OSTI)

At high latitudes, changes in soil moisture could alter soil temperatures independently of air temperature changes by interacting with the snow thermal rectifier. The authors investigated this mechanism with model experiments in the Community Land ...

Zachary M. Subin; Charles D. Koven; William J. Riley; Margaret S. Torn; David M. Lawrence; Sean C. Swenson

2013-05-01T23:59:59.000Z

236

Historic Land Use and Carbon Estimates for South and Southeast Asia:  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Historic Land Use and Carbon Estimates for South and Southeast Asia: Historic Land Use and Carbon Estimates for South and Southeast Asia: 1880-1980 (1994) (NDP-046) DOI: 10.3334/CDIAC/lue.ndp046 data Data PDF PDF Contributors J. F. Richards and E. P. Flint Description This data base contains estimates of land use change and the carbon content of vegetation for South and Southeast Asia for the years 1880, 1920, 1950, 1970, and 1980. These data were originally collected for climate modelers so they could reduce the uncertainty associated with the magnitude and time course of historical land use change and of carbon release. For this data base, South and Southeast Asia is defined as encompassing nearly 8 × 106 km2 of the earth's land surface and includes the countries of India, Sri Lanka, Bangladesh, Myanmar (Burma), Thailand, Laos, Kampuchea (Cambodia),

237

Final report on "Modeling Diurnal Variations of California Land Biosphere CO2 Fluxes"  

SciTech Connect (OSTI)

In Mediterranean climates, the season of water availability (winter) is out of phase with the season of light availability and atmospheric demand for moisture (summer). Multi-year half-hourly observations of sap flow velocities in 26 evergreen trees in a small watershed in Northern California show that different species of evergreen trees have different seasonalities of transpiration: Douglas-firs respond immediately to the first winter rain, while Pacific madrones have peak transpiration in the dry summer. Using these observations, we have derived species-specific parameterization of normalized sap flow velocities in terms of insolation, vapor pressure deficit and near-surface soil moisture. A simple 1-D boundary layer model showed that afternoon temperatures may be higher by 1 degree Celsius in an area with Douglas-firs than with Pacific madrones. The results point to the need to develop a new representation of subsurface moisture, in particular pools beneath the organic soil mantle and the vadose zone. Our ongoing and future work includes coupling our new parameterization of transpiration with new representation of sub-surface moisture in saprolite and weathered bedrock. The results will be implemented in a regional climate model to explore vegetation-climate feedbacks, especially in the dry season.

Fung, Inez

2014-07-28T23:59:59.000Z

238

Climate change and uncertainty in ecological niche modeling  

E-Print Network [OSTI]

enhance regional climate change impact studies." Eos Trans.hydrologic impacts of climate change in the Sierra Nevada,of a century of climate change on small-mammal communities

Alvarez, Otto

2011-01-01T23:59:59.000Z

239

Modeling the Impacts of Future Climate Change on Irrigation over China: Sensitivity to Adjusted Projections  

Science Journals Connector (OSTI)

Because of the limitations of coarse-resolution general circulation models (GCMs), delta change (DC) methods are generally used to derive scenarios of future climate as inputs into impact models. In this paper, the impact of future climate change ...

Guoyong Leng; Qiuhong Tang

2014-10-01T23:59:59.000Z

240

Incoming Solar and Infrared Radiation Derived from METEOSAT: Impact on the Modeled Land Water and Energy Budget over France  

Science Journals Connector (OSTI)

The Land Surface Analysis Satellite Applications Facility (LSA SAF) project radiation fluxes, derived from the Meteosat Second Generation (MSG) geostationary satellite, were used in the Interactions between Soil, Biosphere, and Atmosphere (ISBA) ...

D. Carrer; S. Lafont; J.-L. Roujean; J.-C. Calvet; C. Meurey; P. Le Moigne; I. F. Trigo

2012-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "land change modeler" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

Modeling the per capita ecological footprint for Dallas County, Texas: Examining demographic, environmental value, land-use, and spatial influences  

E-Print Network [OSTI]

This study addresses factors driving the variation in the per capita Ecological Footprint (EF) in Dallas County, Texas. A main hypothesis was that scientifically estimated demography, environmental values, spatial attributes, and land-use patterns...

Ryu, Hyung Cheal

2005-08-29T23:59:59.000Z

242

Mapping the Potential for Biofuel Production on Marginal Lands: Differences in Definitions, Data and Models across Scales  

E-Print Network [OSTI]

J.E. ; Lobell, D.B. Biomass energy: The scale of theS. Marginal Land-based Biomass Energy Production in China.crops none none none biomass energy none none none none none

Lewis, Sarah M

2014-01-01T23:59:59.000Z

243

Generation and analysis of the 2005 land cover map for Mexico using 250m MODIS data  

Science Journals Connector (OSTI)

Land cover plays a key role in global to regional monitoring and modeling because it affects and is being affected by climate change and thus became one of the essential variables for climate change studies. National and international organizations require timely and accurate land cover information for reporting and management actions. The North American Land Change Monitoring System (NALCMS) is an international cooperation of organizations and entities of Canada, the United States, and Mexico to map land cover change of North America's changing environment. This paper presents the methodology to derive the land cover map of Mexico for the year 2005 which was integrated in the NALCMS continental map. Based on a time series of 250m Moderate Resolution Imaging Spectroradiometer (MODIS) data and an extensive sample data base the complexity of the Mexican landscape required a specific approach to reflect land cover heterogeneity. To estimate the proportion of each land cover class for every pixel several decision tree classifications were combined to obtain class membership maps which were finally converted to a discrete map accompanied by a confidence estimate. The map yielded an overall accuracy of 82.5% (Kappa of 0.79) for pixels with at least 50% map confidence (71.3% of the data). An additional assessment with 780 randomly stratified samples and primary and alternative calls in the reference data to account for ambiguity indicated 83.4% overall accuracy (Kappa of 0.80). A high agreement of 83.6% for all pixels and 92.6% for pixels with a map confidence of more than 50% was found for the comparison between the land cover maps of 2005 and 2006. Further wall-to-wall comparisons to related land cover maps resulted in 56.6% agreement with the MODIS land cover product and a congruence of 49.5 with Globcover.

Ren R. Colditz; Gerardo Lpez Saldaa; Pedro Maeda; Jess Argumedo Espinoza; Carmen Meneses Tovar; Arturo Victoria Hernndez; Carlos Zermeo Bentez; Isabel Cruz Lpez; Rainer Ressl

2012-01-01T23:59:59.000Z

244

Water Resources and Climate Change in Garden Park, Colorado  

E-Print Network [OSTI]

This paper examines whether groundwater can provide adequate water supplies for land use change and future development in Garden Park, Colorado. A climatic water budget model was used to determine the amount and adequacy of the groundwater supply...

Baffa, Thomas W.

2009-12-18T23:59:59.000Z

245

Conclusion: applying South East Asia Rainforest Research Programme science to land-use management policy and practice in a changing landscape and climate  

Science Journals Connector (OSTI)

...East Asia Rainforest Research Programme science to land-use management policy and practice...are briefly reviewed and the roles which science can play in addressing questions are outlined...considered. Results from the atmospheric science and hydrology papers, and some of the...

2011-01-01T23:59:59.000Z

246

EIA - Greenhouse Gas Emissions - Land use  

Gasoline and Diesel Fuel Update (EIA)

6. Land use 6. Land use 6.1. Total land use, land use change, and forests This chapter presents estimates of carbon sequestration (removal from the atmosphere) and emissions (release into the atmosphere) from forests, croplands, grasslands, and residential areas (urban trees, grass clippings, and food scraps) in the United States. In 2008, land use, land use change, and forests were responsible for estimated net carbon sequestration of 940 MMTCO2e (Table 31), representing 16 percent of total U.S. CO2 emissions. The largest sequestration category in 2008 was forest lands and harvested wood pools,49 with estimated sequestration increasing from 730 MMTCO2e in 1990 to 792 MMTCO2e in 2008. The second-largest carbon sequestration category was urban trees,50 responsible for 57 MMTCO2e in 1990 and 94

247

Development of An Empirical Water Quality Model for Stormwater Based on Watershed Land Use in Puget Sound  

SciTech Connect (OSTI)

The Sinclair and Dyes Inlet watershed is located on the west side of Puget Sound in Kitsap County, Washington, U.S.A. (Figure 1). The Puget Sound Naval Shipyard (PSNS), U.S Environmental Protection Agency (USEPA), the Washington State Department of Ecology (WA-DOE), Kitsap County, City of Bremerton, City of Bainbridge Island, City of Port Orchard, and the Suquamish Tribe have joined in a cooperative effort to evaluate water-quality conditions in the Sinclair-Dyes Inlet watershed and correct identified problems. A major focus of this project, known as Project ENVVEST, is to develop Water Clean-up (TMDL) Plans for constituents listed on the 303(d) list within the Sinclair and Dyes Inlet watershed. Segments within the Sinclair and Dyes Inlet watershed were listed on the State of Washingtons 1998 303(d) because of fecal coliform contamination in marine water, metals in sediment and fish tissue, and organics in sediment and fish tissue (WA-DOE 2003). Stormwater loading was identified by ENVVEST as one potential source of sediment contamination, which lacked sufficient data for a contaminant mass balance calculation for the watershed. This paper summarizes the development of an empirical model for estimating contaminant concentrations in all streams discharging into Sinclair and Dyes Inlets based on watershed land use, 18 storm events, and wet/dry season baseflow conditions between November 2002 and May 2005. Stream pollutant concentrations along with estimates for outfalls and surface runoff will be used in estimating the loading and ultimately in establishing a Water Cleanup Plan (TMDL) for the Sinclair-Dyes Inlet watershed.

Cullinan, Valerie I.; May, Christopher W.; Brandenberger, Jill M.; Judd, Chaeli; Johnston, Robert K.

2007-03-29T23:59:59.000Z

248

Modeled climate change effects on distributions of Canadian butterfly species  

E-Print Network [OSTI]

Abstract: Climate change effects on biodiversity are being documented now frequently in the form of changes in phenology and distributional shifts. However, the form that these effects will take over a longer timespan is ...

Peterson, A. Townsend; Martí nez-Meyer, Enrique; Gonzá lez-Salazar, Constantino; Hall, Peter W.

2004-07-30T23:59:59.000Z

249

Results from the Carbon-Land Model Intercomparison Project (C-LAMP) and Availability of the Data on the Earth System Grid (ESG)  

SciTech Connect (OSTI)

This paper describes the Carbon-Land Model Intercomparison Project (C-LAMP) being carried out through a collaboration between the Community Climate System Model (CCSM) Biogeochemistry Working Group, a DOE SciDAC-2 project, and the DOE Program for Climate Model Diagnosis and Intercomparison (PCMDI). The goal of the project is to intercompare terrestrial biogeochemistry models running within the CCSM framework to determine the best set of processes to include in future versions of CCSM. As a part of the project, observational datasets are being collected and used to score the scientific performance of these models following a well-defined set of metrics. In addition, metadata standards for terrestrial biosphere models are being developed to support archival and distribution of the C-LAMP model output via the Earth System Grid (ESG). Progress toward completion of this project and preliminary results from the first set of experiments are reported.

Hoffman, Forrest M [ORNL; Covey, Curtis [Lawrence Livermore National Laboratory (LLNL); Fung, Inez [University of California, Berkeley; Randerson, Jim [University of California, Irvine; Thornton, Peter [National Center for Atmospheric Research (NCAR); Lee, Jeff [National Center for Atmospheric Research (NCAR); Rosenbloom, Nan [National Center for Atmospheric Research (NCAR); Stockli, Reto [Colorado State University, Fort Collins; Running, Steven [University of Montana, Missoula; Bernholdt, David E [ORNL; Williams, Dean [Lawrence Livermore National Laboratory (LLNL)

2007-01-01T23:59:59.000Z

250

Modeling Impacts of Land-Use/Land-Cover Change and Variable Precipitation on Hydrology and Water Quality of a Coastal Watershed in Texas  

E-Print Network [OSTI]

delivered total phosphorus load to Copano Bay from the Aransas River for the historical (Hist) baseline (1990-1999) and each scenario (2030-2039). b) Average monthly delivered total phosphorus load to Copano Bay from the Aransas River for the historical...

Castillo, Cesar Ricardo

2013-05-31T23:59:59.000Z

251

Land Turtles  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Turtles Turtles Nature Bulletin No. 157 May 29, 1948 Forest Preserve District of Cook County William N. Erickson, President Roberts Mann, Supt. of Conservation LAND TURTLES Turtles are four-legged reptiles that originated before the dinosaurs appeared, some 175 million years ago. The distinguishing feature of the turtle is its shell, varying in shape and markings with the different species: an arched upper shell grown fast to the backbone, and a flat lower shell grown fast to the breastbone, the two connected on either side by a bony bridge. In some species, like the box turtles, the lower shell is hinged, enabling the animal to completely conceal its head, tail and limbs by closing the two shells together. Most turtles live in water all or part of the time, but all of them lay their eggs on land, and neither the nest nor the young is attended by the parents. Each species has its own method of nest construction, using the hind legs to dig a hole in the ground, but the eggs are covered and left to be hatched by the heat of the sun. The eggs are relished by many animals such as skunks and squirrels; the young, before their armor hardens, are devoured by birds, mammals, fishes and other turtles.

252

MODIS Land Products Subsets  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Introduction Introduction The goal of the MODIS Land Product Subsets project is to provide summaries of selected MODIS Land Products for the community to use for validation of models and remote-sensing products, and to characterize field sites. The MODIS Land Product Subsets are derived from MODIS products that were generated with Collection 4 or later algorithms. Please be advised that these products are subject to continual review and revision. The MODIS land product subsets are provided in ASCII and GeoTIFF format. The subsets are stored as individual text(ASCII) files, each file represents one field site and one MODIS product.The ASCII data covers 7x7 km of the field site. These ASCII files contain comma-delimited rows of parameter values (image bands) for each pixel in the selected area. Each row in the file will contain data from one 8-day, 16-day, or annual period (depending on the temporal frequency of the data product represented).

253

Modeling temporal variations of electrical resistivity associated with pore pressure change in a kilometer-scale  

E-Print Network [OSTI]

Modeling temporal variations of electrical resistivity associated with pore pressure change, and resistivity structures that create the distortion are identified. The electrically resistive crystalline, electrical resistivity changes in structures can be detected through an amplification of the static

Paris-Sud XI, Université de

254

Explicitly Accounting for Protected Lands within the GCAM 3.0  

SciTech Connect (OSTI)

The Global Change Assessment Model Version 3.0 defines three different levels of Protected Lands within the agricultural and landuse component. These three different scenarios effectively cordon off 3.5% (5.0 million km2) of the Earths terrestrial lands in the de minimus Protected Land Scenario, 5.0% (7.20 million km2) in the Core Protected Land Scenario, and 8.2% (11.8 million km2) in the Expanded Protected Land Scenario. None of these scenarios represents the right level of Protected Lands for the planet today or tomorrow. Rather, the goal is to create a range of scenarios that can be used in modeling human responses to climate change and the impact those would have on managed and unmanaged terrestrial lands. These scenarios harness the wealth of information in the United Nations Environment Programme World Conservation Monitoring Centres World Database on Protected Areas and its categories of explicit degrees of protection.

Dooley, James J.; Zhou, Yuyu

2012-05-01T23:59:59.000Z

255

User Subjectivity in Change Modeling of Streaming Itemsets  

E-Print Network [OSTI]

database and particularly for a data stream. Monitoring data streams is a challenging task because of a boiler may indicate malfunctioning in the process, while rate of change may indicate the severity

Bhatnagar, Vasudha

256

Climate Change Policy: What Do the Models Tell Us?  

E-Print Network [OSTI]

Very little. A plethora of integrated assessment models (IAMs) have been constructed and used to estimate the social cost of carbon (SCC) and evaluate alternative abatement policies. These models have crucial flaws that ...

Pindyck, Robert S.

257

Transient Responses of a Coupled OceanAtmosphere Model to Gradual Changes of Atmospheric CO2. Part I. Annual Mean Response  

Science Journals Connector (OSTI)

This study investigates the response of a climate model to a gradual increase or decrease of atmospheric carbon dioxide. The model is a general circulation model of the coupled atmosphere-ocean-land surface system with global geography and ...

S. Manabe; R. J. Stouffer; M. J. Spelman; K. Bryan

1991-08-01T23:59:59.000Z

258

Recent Changes in Arctic Vegetation: Satellite Observations and Simulation Model Predictions  

E-Print Network [OSTI]

Chapter 2 Recent Changes in Arctic Vegetation: Satellite Observations and Simulation Model with a combination of satellite observations (Fig. 2.1) and field mea- surements, as projected by simulation modeling

Bhatt, Uma

259

Microsoft Word - MSA - Theory of Change Logic Model (1).docx  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

* Video reflection and presentation 2xyr. * MSA days 2xyr. Instructional Coaching and PLC Support * Includes complete coaching cycles, video review, and modeling throughout...

260

Changes in Temperature and Precipitation Extremes in the IPCC Ensemble of Global Coupled Model Simulations  

E-Print Network [OSTI]

Changes in Temperature and Precipitation Extremes in the IPCC Ensemble of Global Coupled Model September 2006) ABSTRACT Temperature and precipitation extremes and their potential future changes on Climate Change (IPCC) diagnostic exercise for the Fourth Assessment Report (AR4). Climate extremes

Note: This page contains sample records for the topic "land change modeler" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Modeling Support Changes in Streaming Itemsets Vasudha Bhatnagar, Sarabjeet Kochhar  

E-Print Network [OSTI]

databases has captured attention of KDD community in the recent years. Stream databases are characterized process (dgp). In real life applications, where the database is continuously evolving (possibly fed temperature of a boiler may indicate malfunctioning in the process, while rate of change may indicate

Bhatnagar, Vasudha

262

Modelling the reorientation of sea-ice faults as the wind changes direction  

E-Print Network [OSTI]

in the Ant- arctic. As sea ice reflects up to 80% of incident solar radiation, insulates the ocean fromModelling the reorientation of sea-ice faults as the wind changes direction Alexander V. WILCHINSKY-1290, USA ABSTRACT. A discrete-element model of sea ice is used to study how a 908 change in wind direction

Feltham, Daniel

263

The contribution of future agricultural trends in the US Midwest to global climate change mitigation  

SciTech Connect (OSTI)

Land use change is a complex response to changing environmental and socioeconomic systems. Historical drivers of land use change include changes in the natural resource availability of a region, changes in economic conditions for production of certain products and changing policies. Most recently, introduction of policy incentives for biofuel production have influenced land use change in the US Midwest, leading to concerns that bioenergy production systems may compete with food production and land conservation. Here we explore how land use may be impacted by future climate mitigation measures by nesting a high resolution agricultural model (EPIC Environmental Policy Indicator Climate) for the US Midwest within a global integrated assessment model (GCAM Global Change Assessment Model). This approach is designed to provide greater spatial resolution and detailed agricultural practice information by focusing on the climate mitigation potential of agriculture and land use in a specific region, while retaining the global economic context necessary to understand the far ranging effects of climate mitigation targets. We find that until the simulated carbon prices are very high, the US Midwest has a comparative advantage in producing traditional food and feed crops over bioenergy crops. Overall, the model responds to multiple pressures by adopting a mix of future responses. We also find that the GCAM model is capable of simulations at multiple spatial scales and agricultural technology resolution, which provides the capability to examine regional response to global policy and economic conditions in the context of climate mitigation.

Thomson, Allison M.; Kyle, G. Page; Zhang, Xuesong; Bandaru, Varaprasad; West, Tristram O.; Wise, Marshall A.; Izaurralde, Roberto C.; Calvin, Katherine V.

2014-01-19T23:59:59.000Z

264

Changes in the Asian monsoon climate during 17001850 induced by preindustrial cultivation  

Science Journals Connector (OSTI)

...1253 1266 . 5 Brovkin V ( 2006 ) Biogeophysical effects of historical land cover changes simulated by six Earth system models of intermediate complexity . Clim Dyn 26 : 587 600 . 6 Bounoua L Defries R Collatz GJ Sellers P Khan H ( 2002 ) Effects...

Kumiko Takata; Kazuyuki Saito; Tetsuzo Yasunari

2009-01-01T23:59:59.000Z

265

MODIS Land Products Subsets  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Introduction Introduction Collection 5 The MODIS data from the Terra and Aqua satellites are being reprocessed using revised algorithms beginning in September 2006. This new set of MODIS Products is called Collection 5. To view the product changes that took place in going from Collection 4 to Collection 5, please visit the following Web site: http://landweb.nascom.nasa.gov/cgi-bin/QA_WWW/newPage.cgi?fileName=MODLAND_C005_changes The ORNL DAAC provides subsets of the Collection 5 MODIS Land Products. Investigators from around the world have shown a great deal of interest in this activity, asking that over 1000 field and flux tower sites be included in Collection 5 subsetting (up from 280 sites for Collection 4 MODIS subsetting). Availability of the Collection 5 Data Products

266

Two LBA-ECO Land Use and Land Cover Data Sets Released  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Land Use and Land Cover Data Sets Released Land Use and Land Cover Data Sets Released The ORNL DAAC and the LBA DIS announce the release of two data sets from the Land Use and Land Cover (LC-04) science teams associated with the ecology component of the Large Scale Biosphere-Atmosphere Experiment in Amazonia (LBA), LBA-ECO: LBA-ECO LC-04 THMB Model Simulations for the Amazon and Tocantins Basins: 1939-1998 . Data set prepared by M.T. Coe, M.H. Costa, A. Botta, and C. Birkett. The model output data provided were generated by the THMB 1.2 (Terrestrial Hydrology Model with Biogeochemistry) model which simulates the flow of water through groundwater systems, rivers, lakes and wetlands. The model operates at a 5-minute latitude-by-longitude grid with a 1-hour time step and requires as boundary conditions: topography,

267

Multi-century Changes to Global Climate and Carbon Cycle: Results from a Coupled Climate and Carbon Cycle Model  

SciTech Connect (OSTI)

In this paper, we use a coupled climate and carbon cycle model to investigate the global climate and carbon cycle changes out to year 2300 that would occur if CO{sub 2} emissions from all the currently estimated fossil fuel resources were released to the atmosphere. By year 2300, the global climate warms by about 8 K and atmospheric CO{sub 2} reaches 1423 ppmv. The warming is higher than anticipated because the sensitivity to radiative forcing increases as the simulation progresses. In our simulation, the rate of emissions peak at over 30 PgC yr{sup -1} early in the 22nd century. Even at year 2300, nearly 50% of cumulative emissions remain in the atmosphere. In our simulations both soils and living biomass are net carbon sinks throughout the simulation. Despite having relatively low climate sensitivity and strong carbon uptake by the land biosphere, our model projections suggest severe long-term consequences for global climate if all the fossil-fuel carbon is ultimately released to the atmosphere.

Bala, G; Caldeira, K; Mirin, A; Wickett, M; Delire, C

2005-02-17T23:59:59.000Z

268

A Model for Minimizing Active Processor Time Jessica Chang1  

E-Print Network [OSTI]

, the problem often becomes NP-complete.) We propose a simple model for measuring energy usage on a parallel consumes a fixed amount of energy per active timeslot, regardless of the number of jobs scheduled to finding a triangle-free 2-matching on a special graph. We extend the algorithm of Babenko et. al. [3

Khuller, Samir

269

A Model for Minimizing Active Processor Time Jessica Chang  

E-Print Network [OSTI]

#12;We propose a simple model for measuring energy usage on a parallel machine. Rather than focusing consumes a fixed amount of energy per active timeslot, regardless of the number of jobs scheduled, the problem amounts to finding a triangle-free 2-matching on a special graph. We extend the algorithm

Khuller, Samir

270

Biomass Energy and Competition for Land  

E-Print Network [OSTI]

We describe an approach for incorporating biomass energy production and competition for land into the MIT Emissions Prediction and Policy Analysis (EPPA) model, a computable general equilibrium model of the world economy, ...

Reilly, John

271

General and Partial Equilibrium Modeling of Sectoral Policies to Address Climate Change in the United States  

SciTech Connect (OSTI)

This document provides technical documentation for work using detailed sectoral models to calibrate a general equilibrium analysis of market and non-market sectoral policies to address climate change. Results of this work can be found in the companion paper, ?Modeling Costs of Economy-wide versus Sectoral Climate Policies Using Combined Aggregate-Sectoral Models?.

Pizer, William; Burtraw, Dallas; Harrington, Winston; Newell, Richard; Sanchirico, James; Toman, Michael

2003-03-31T23:59:59.000Z

272

PATCH-BASED MARKOV MODELS FOR CHANGE DETECTION IN IMAGE SEQUENCE ANALYSIS  

E-Print Network [OSTI]

PATCH-BASED MARKOV MODELS FOR CHANGE DETECTION IN IMAGE SEQUENCE ANALYSIS Thierry P image. In this paper, we propose an original patch-based Markov modeling framework to de- tect spatial are then detected. Therefore, we propose an original patch-based Markov modeling that detects irregu- larities

Paris-Sud XI, Université de

273

The Impact of Land Surface Processes on Simulations of the U.S. Hydrological Cycle: A Case Study of the 1993 Flood Using the SSiB Land Surface Model in the NCEP Eta Regional Model  

Science Journals Connector (OSTI)

This paper describes a methodology for coupling the Simplified Simple Biosphere Model (SSiB) to the regional Eta Model of the National Centers for Environmental Prediction (NCEP), and presents the application of the coupled system in regional ...

Y. Xue; F. J. Zeng; K. E. Mitchell; Z. Janjic; E. Rogers

2001-12-01T23:59:59.000Z

274

INVESTIGATIONS ON THE IMPACTS OF LAND-COVER CHANGES AND/OR INCREASED CO2 CONCENTRATIONS ON FOUR REGIONAL WATER CYCLES  

E-Print Network [OSTI]

REGIONAL WATER CYCLES AND THEIR INTERACTIONS WITH THE GLOBAL WATER CYCLE By Zhao Li RECOMMENDED-COVER CHANGES AND/OR INCREASED CO2 CONCENTRATIONS ON FOUR REGIONAL WATER CYCLES AND THEIR INTERACTIONS WITH THE GLOBAL WATER CYCLE A THESIS Presented to the Faculty of the University of Alaska Fairbanks In Partial

Moelders, Nicole

275

Coupling GIS and LCA for biodiversity assessments of land use: Part 2: Impact assessment  

E-Print Network [OSTI]

Evenness . Geographic information systems (GIS) .GIS-based inventory modeling . Habitats . Hemeroby . Land0199-9 LAND USE IN LCA Coupling GIS and LCA for biodiversity

Geyer, Roland; Lindner, Jan P.; Stoms, David M.; Davis, Frank W.; Wittstock, Bastian

2010-01-01T23:59:59.000Z

276

land | OpenEI  

Open Energy Info (EERE)

land land Dataset Summary Description This dataset is part of a larger internal dataset at the National Renewable Energy Laboratory (NREL) that explores various characteristics of large solar electric (both PV and CSP) facilities around the United States. This dataset focuses on the land use characteristics for solar facilities that are either under construction or currently in operation. Source Land-Use Requirements for Solar Power Plants in the United States Date Released June 25th, 2013 (5 months ago) Date Updated Unknown Keywords acres area average concentrating solar power csp Density electric hectares km2 land land requirements land use land-use mean photovoltaic photovoltaics PV solar statistics Data application/vnd.openxmlformats-officedocument.spreadsheetml.sheet icon Master Solar Land Use Spreadsheet (xlsx, 1.5 MiB)

277

PIA - Land Record System (SWPA) | Department of Energy  

Energy Savers [EERE]

Record System (SWPA) PIA - Land Record System (SWPA) More Documents & Publications PIA - INL PeopleSoft - Human Resource System PIA - Human Resources - Personal Information Change...

278

Microsoft Word - MSA - Theory of Change Logic Model (1).docx  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

LANL: CPO, 1-15-2013, Working Draft LANL: CPO, 1-15-2013, Working Draft CGA-CPO, LANL Math and Science Academy (MSA) - Program Model Resources Concrete Activity Short Term Outcomes Long Term Outcomes Impacts LANL Resources * MSA Staff * LANL Community Programs Office (CPO) Community and Government Affairs (CGA) * LANS Regional, State, and National Partners * New Mexico Consortium * University of New Mexico (UNM) * Bureau of Indian Education (BIE) * Northern NM College * Bradbury Science Museum * WestED * LANL Foundation * Inquiry Science Education Consortium (ISEC) * LASER I3 Core MSA Program - 3 Years Intensive Summer Institute * 2 weeks of research-based instruction * 1 week Science-Citement or Math-Citement * Coaching 2-3 sessions/semester * After school team meetings 8hrs./sem.

279

Precipitation, Recycling, and Land Memory: An Integrated Analysis  

E-Print Network [OSTI]

A synthesis of several approaches to quantifying landatmosphere interactions is presented. These approaches use data from observations or atmospheric reanalyses applied to atmospheric tracer models and stand-alone land ...

Dirmeyer, Paul A.

280

Modeling a solar energy collector with an integrated phase-change material  

E-Print Network [OSTI]

In this thesis, a finite-element computer model was created to simulate a solar air heater with an integrated-phase change material. The commercially available finite element package ADINA-Fluid was used to generate the ...

Guerra, Alexander Adrian

2009-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "land change modeler" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

Modeling a solar energy collector with an integrated phase-change material .  

E-Print Network [OSTI]

??In this thesis, a finite-element computer model was created to simulate a solar air heater with an integrated-phase change material. The commercially available finite element (more)

Guerra, Alexander Adrian

2009-01-01T23:59:59.000Z

282

Climate change uncertainty evaluation, impacts modelling and resilience of farm scale dynamics in Scotland  

E-Print Network [OSTI]

This Thesis explored a range of approaches to study the uncertainty and impacts associated with climate change at the farm scale in Scotland. The research objective was to use a process of uncertainty evaluation and simulation modelling to provide...

Rivington, Michael

2011-06-28T23:59:59.000Z

283

The Influence of Hadley Circulation Intensity Changes on Extratropical Climate in an Idealized Model  

Science Journals Connector (OSTI)

Experiments have been performed using a simple global model with idealized physics and zonally symmertrical forcings to investigate the influence of Hadley circulation intensity changes on extratropical climate. The heating within the Tropics is ...

Edmund K. M. Chang

1995-06-01T23:59:59.000Z

284

Testing for Climate Change: An Application of the Two-Phase Regression Model  

Science Journals Connector (OSTI)

A statistical test for detecting a change in the behavior of an annual temperature series is presented. The test is based on the two-phase regression model. By trading the hypothesized time of change as an unknown parameter, the approach allows ...

Andrew R. Solow

1987-10-01T23:59:59.000Z

285

Land Reclamation Act (Missouri)  

Broader source: Energy.gov [DOE]

It is the policy of the state to balance surface mining interests with the conservation of natural resources and land preservation. This Act authorizes the Land Reclamation Commission of the...

286

Moving from Status to Trends: Forest Inventory and Analysis Symposium 2012 46GTR-NRS-P-105 IMAGE-BASED CHANGE ESTIMATION FOR LAND COVER  

E-Print Network [OSTI]

Moving from Status to Trends: Forest Inventory and Analysis Symposium 2012 46GTR-NRS-P-105 IMAGE are core to applications including: carbon accounting, greenhouse gas emission reporting, biomass effects of natural disturbances and human activities. By extension, our ability to understand and model

287

Change in regime and transfer function models of global solar radiation in Kuwait  

Science Journals Connector (OSTI)

The development of the models for global solar radiation in Kuwait is based on removing the annual periodicity and seasonal variation. The first methodology used here is the change in regime technique that relies on dividing the observations into two ... Keywords: ARMA model, Harmonic analysis, Solar radiation, Transfer function

S. A. Al-Awadhi

2005-09-01T23:59:59.000Z

288

Cascading uncertainty in climate change models and its implications for policy  

E-Print Network [OSTI]

Commentary Cascading uncertainty in climate change models and its implications for policy MARK, there are intrinsic problems with modelling natural systems (Cartwright 1983). This is because it is impossible). The original IPCC reports used simplistic assumption of greenhouse gas emissions over the next 100 years. From

Jones, Peter JS

289

The Role of Simple Models in Understanding Climate Change Thomas F. Stocker  

E-Print Network [OSTI]

equations of the Earth System. For example, some 1 #12;aspects of the large-scale ocean circulation are well of processes that are responsible for climate change. The examples of the carbon cycle and the ocean uses general circulation models of the at- mosphere, and the ocean which are then coupled to model

Stocker, Thomas

290

A cognitive-consistency based model of population wide attitude change.  

SciTech Connect (OSTI)

Attitudes play a significant role in determining how individuals process information and behave. In this paper we have developed a new computational model of population wide attitude change that captures the social level: how individuals interact and communicate information, and the cognitive level: how attitudes and concept interact with each other. The model captures the cognitive aspect by representing each individuals as a parallel constraint satisfaction network. The dynamics of this model are explored through a simple attitude change experiment where we vary the social network and distribution of attitudes in a population.

Lakkaraju, Kiran; Speed, Ann Elizabeth

2010-06-01T23:59:59.000Z

291

Agriculture and Land Use National Greenhouse Gas Inventory Software | Open  

Open Energy Info (EERE)

Agriculture and Land Use National Greenhouse Gas Inventory Software Agriculture and Land Use National Greenhouse Gas Inventory Software Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Agriculture and Land Use National Greenhouse Gas Inventory Software Agency/Company /Organization: Colorado State University Partner: United States Agency for International Development, United States Forest Service, United States Environmental Protection Agency Sector: Land Focus Area: Forestry, Agriculture Topics: GHG inventory Resource Type: Software/modeling tools User Interface: Desktop Application Website: www.nrel.colostate.edu/projects/ghgtool/index.php Cost: Free Agriculture and Land Use National Greenhouse Gas Inventory Software Screenshot References: Agriculture and Land Use National Greenhouse Gas Inventory Software[1]

292

Shape Changing and Accelerating Solitons in the Integrable Variable Mass Sine-Gordon Model  

SciTech Connect (OSTI)

The sine-Gordon model with a variable mass (VMSG) appears in many physical systems, ranging from the current through a nonuniform Josephson junction to DNA-promoter dynamics. Such models are usually nonintegrable with solutions found numerically or perturbatively. We construct a class of VMSG models, integrable at both the classical and the quantum levels with exact soliton solutions, which can accelerate and change their shape, width, and amplitude simulating realistic inhomogeneous systems at certain limits.

Kundu, Anjan [Theory Group, Saha Institute of Nuclear Physics, Calcutta (India)

2007-10-12T23:59:59.000Z

293

Modelling the effects of climate change on the energy systemA case study of Norway  

Science Journals Connector (OSTI)

The overall objective of this work is to identify the effects of climate change on the Norwegian energy system towards 2050. Changes in the future wind- and hydro-power resource potential, and changes in the heating and cooling demand are analysed to map the effects of climate change. The impact of climate change is evaluated with an energy system model, the MARKAL Norway model, to analyse the future cost optimal energy system. Ten climate experiments, based on five different global models and six emission scenarios, are used to cover the range of possible future climate scenarios and of these three experiments are used for detailed analyses. This study indicate that in Norway, climate change will reduce the heating demand, increase the cooling demand, have a limited impact on the wind power potential, and increase the hydro-power potential. The reduction of heating demand will be significantly higher than the increase of cooling demand, and thus the possible total direct consequence of climate change will be reduced energy system costs and lower electricity production costs. The investments in offshore wind and tidal power will be reduced and electric based vehicles will be profitable earlier.

Pernille Seljom; Eva Rosenberg; Audun Fidje; Jan Erik Haugen; Michaela Meir; John Rekstad; Thore Jarlset

2011-01-01T23:59:59.000Z

294

Land-Use History and Contemporary Management Inform an Ecological Reference Model for Longleaf Pine Woodland Understory Plant Communities.  

SciTech Connect (OSTI)

Ecological restoration is frequently guided by reference conditions describing a successfully restored ecosystem; however, the causes and magnitude of ecosystem degradation vary, making simple knowledge of reference conditions insufficient for prioritizing and guiding restoration. Ecological reference models provide further guidance by quantifying reference conditions, as well as conditions at degraded states that deviate from reference conditions. Many reference models remain qualitative, however, limiting their utility. We quantified and evaluated a reference model for southeastern U.S. longleaf pine woodland understory plant communities. We used regression trees to classify 232 longleaf pine woodland sites at three locations along the Atlantic coastal plain based on relationships between understory plant community composition, soils lol(which broadly structure these communities), and factors associated with understory degradation, including fire frequency, agricultural history, and tree basal area. To understand the spatial generality of this model, we classified all sites together. and for each of three study locations separately. Both the regional and location-specific models produced quantifiable degradation gradientsi.e., progressive deviation from conditions at 38 reference sites, based on understory species composition, diversity and total cover, litter depth, and other attributes. Regionally, fire suppression was the most important degrading factor, followed by agricultural history, but at individual locations, agricultural history or tree basal area was most important. At one location, the influence of a degrading factor depended on soil attributes. We suggest that our regional model can help prioritize longleaf pine woodland restoration across our study region; however, due to substantial landscape-to-landscape variation, local management decisions should take into account additional factors (e.g., soil attributes). Our study demonstrates the utility of quantifying degraded states and provides a series of hypotheses for future experimental restoration work. More broadly, our work provides a framework for developing and evaluating reference models that incorporate multiple, interactive anthropogenic drivers of ecosystem degradation.

Brudvig, Lars A. [Department of Plant Biology, Michigan State University; Orrock, John L. [Department of Zoology, University of Wisconsin; Damschen, Ellen I. [Department of Zoology, University of Wisconsin; et al, et al

2014-01-23T23:59:59.000Z

295

MODIS Land Products Subsets  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Data for Selected Field Sites (n=1147) Data for Selected Field Sites (n=1147) Obtain MODIS data for areas centered on selected field sites or flux towers from around the world. The goal of the MODIS Subsets for Selected Field Sites is to prepare summaries of selected MODIS Land Products for the community to use for validation of models and remote sensing products and to characterize field sites. Search for data: By Site from a Map Server from Google Earth (Install Google Earth) From FTP site (ASCII) Methods Data products were first subsetted from one or more 1200x1200-km MODIS tiles to 25 x 25-km arrays by the MODIS Science Data Support Team (MODAPS). These products were further subsetted (7x7) and reformatted from their native HDF-EOS to ASCII using version 2.2 of the MODIS Reprojection Tool (MRT) in combination with code developed at the ORNL DAAC.

296

Model-based optimization of economical grade changes for the Borealis Borstar polyethylene plant  

Science Journals Connector (OSTI)

Economical grade changes are considered for a Borealis Borstar polyethylene plant model, incorporating two slurry-phase reactors, one gas-phase reactor and a recycle area with three distillation columns. The model is constructed in the Modelica language and the JModelica.org platform is used for optimization. The cost function expresses the economical profit during a grade change and is formulated using on-grade intervals for seven polymer quality variables such as melt index, density and reactor split factors. Additionally, incentives to produce polymer with quality variables on grade target values, not only inside grade intervals, are added. Twelve inflows and three purge flows are used as decision variables. Two grade changes are thoroughly reviewed, showing the effect of using a cost function that regards plant economy. Resulting trajectories can be divided into three phases with distinguishing features, and the synchronization of inflows and usage of recycle area off-gas flows are important in the grade changes.

Per-Ola Larsson; Johan kesson; Niclas Carlsson; Niklas Andersson

2012-01-01T23:59:59.000Z

297

Change from 3D-Ising to Random Field-Ising-Model Criticality in a Uniaxial Relaxor Ferroelectric  

E-Print Network [OSTI]

Change from 3D-Ising to Random Field-Ising-Model Criticality in a Uniaxial Relaxor Ferroelectric T.8% of the saturation value. A change from three- dimensional random-field Ising to pure Ising model behavior-dimensional random-field Ising model (RFIM) [8] has been proposed [6,9]. This model is based on the assumption

Osnabrück, Universität

298

Effects of vegetation and soil moisture on the simulated land surface processes from the coupled WRF/Noah model  

E-Print Network [OSTI]

simulations. Meso- scale models, which have been used not only for numerical weather prediction but also surface and atmosphere into numerical weather or climate prediction. This study describes coupled WRF [Chen et al., 1997; Pielke et al., 1997]. Numerical weather prediction with high spatial and tempo- ral

Small, Eric

299

EIA - AEO2010 - Clean Air Interstate Rule: Changes and modeling in AEO2010  

Gasoline and Diesel Fuel Update (EIA)

Clean Air Interstate Rule: Changes and modeling in AEO2010 Clean Air Interstate Rule: Changes and modeling in AEO2010 Annual Energy Outlook 2010 with Projections to 2035 Clean Air Interstate Rule: Changes and modeling in AEO2010 On December 23, 2008, the D.C. Circuit Court remanded but did not vacate CAIR [17], overriding its previous decision on February 8, 2008, to remand and vacate CAIR. The December decision, which is reflected in AEO2010, allows CAIR to remain in effect, providing time for the EPA to modify the rule in order to address objections raised by the Court in its earlier decision. A similar rule, referred to as the CAMR, which was to set up a cap-and-trade system for reducing mercury emissions by approximately 70 percent, is not represented in the AEO2010 projections, because it was vacated by the D.C. Circuit Court in February 2008.

300

Modeling the prospects for climatic change: current state-of-the-art and implications  

SciTech Connect (OSTI)

It has been increasingly suggested that the world's climate is going to change in the next several decades, primarily as a result of anthropogenic perturbations to the global carbon cycle brought about by fossil fuel burning and large-scale deforestation. In order to cope with these future climatic changes, it is necessary that tools be developed to predict how complex systems respond to a given change of conditions. This report summarizes the status of our ability to model the planetary system that determines the climate. (ACR)

Kellogg, W.M.

1980-04-04T23:59:59.000Z

Note: This page contains sample records for the topic "land change modeler" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

A new piecewise fuzzy exponential smoothing model based on some change-points  

Science Journals Connector (OSTI)

In our previous studies we proposed the fuzzy exponential smoothing model for extrapolation under a vague system with limited data. However, some change-points in the collected data always generate to enlarge a forecasting interval which provides the decision maker with little information to make some decisions. Therefore, in this study we defined the change-points and the piece forecasting intervals for deriving the piecewise fuzzy exponential smoothing interval, and we can effectively determine the future trends for decision. Finally, an illustrated example has been used to verify the effectiveness and confirm the potential benefits of the proposed model with a smaller and piecewise forecasting interval.

Ruey-Chyn Tsaur

2011-01-01T23:59:59.000Z

302

Analysis of permafrost thermal dynamics and response to climate change in the CMIP5 Earth System Models  

E-Print Network [OSTI]

coupled climate-carbon earth system models part i: PhysicalChangeintheCMIP5EarthSystemModels Koven, C.D. , W.J.output from a set of Earth System Models (ESMs) (Table 1)

Koven, C.D.

2014-01-01T23:59:59.000Z

303

Potential influence of climate-induced vegetation shifts on future land use and associated land carbon fluxes in Northern Eurasia  

E-Print Network [OSTI]

Climate change will alter ecosystem metabolism and may lead to a redistribution of vegetation and changes in fire regimes in Northern Eurasia over the 21st century. Land management decisions will interact with these ...

Kicklighter, D W

304

EOS Land Validation Presentations  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

EOS Land Validation Presentations EOS Land Validation Presentations Meeting: Land Cover Validation Workshop Date: February 2, 2004 Place: Boston, MA Title: Validation Data Support Activities at the ORNL DAAC (Power Point) Presenter: Bob Cook Meeting: Fall 2003 American Geophysical Union (AGU) Meeting Date: December 9, 2003 Place: San Francisco, CA Title: Ground-Based Data Supporting the Validation of MODIS Land Products (Power Point) Presenter: Larry Voorhees Meeting: Terra and Aqua Products Review Date: March 2003 Place: NASA HQ Title: Supporting the Validation of MODIS Land Products (Power Point) Presenter: Larry Voorhees Meeting: Terra and Aqua Products Review Date: March 2003 Place: NASA HQ Title: MODIS Land Summary (Power Point) Presenter: Chris Justice, University of Maryland Meeting: Spring 2002 American Geophysical Union (AGU) Meeting

305

Tax policy can change the production path: A model of optimal oil extraction in Alaska  

Science Journals Connector (OSTI)

We model the economically optimal dynamic oil production decisions for seven production units (fields) on Alaska's North Slope. We use adjustment cost and discount rate to calibrate the model against historical production data, and use the calibrated model to simulate the impact of tax policy on production rate. We construct field-specific cost functions from average cost data and an estimated inverse production function, which incorporates engineering aspects of oil production into our economic modeling. Producers appear to have approximated dynamic optimality. Consistent with prior research, we find that changing the tax rate alone does not change the economically optimal oil production path, except for marginal fields that may cease production. Contrary to prior research, we find that the structure of tax policy can be designed to affect the economically optimal production path, but at a cost in net social benefit.

Wayne Leighty; C.-Y. Cynthia Lin

2012-01-01T23:59:59.000Z

306

Using Weather Data and Climate Model Output in Economic Analyses of Climate Change  

SciTech Connect (OSTI)

Economists are increasingly using weather data and climate model output in analyses of the economic impacts of climate change. This article introduces a set of weather data sets and climate models that are frequently used, discusses the most common mistakes economists make in using these products, and identifies ways to avoid these pitfalls. We first provide an introduction to weather data, including a summary of the types of datasets available, and then discuss five common pitfalls that empirical researchers should be aware of when using historical weather data as explanatory variables in econometric applications. We then provide a brief overview of climate models and discuss two common and significant errors often made by economists when climate model output is used to simulate the future impacts of climate change on an economic outcome of interest.

Auffhammer, Maximilian [University of California at Berkeley; Hsiang, Solomon M. [Princeton University; Schlenker, Wolfram [Columbia University; Sobel, Adam H. [Columbia University

2013-06-28T23:59:59.000Z

307

Progress Report 2008: A Scalable and Extensible Earth System Model for Climate Change Science  

SciTech Connect (OSTI)

This project employs multi-disciplinary teams to accelerate development of the Community Climate System Model (CCSM), based at the National Center for Atmospheric Research (NCAR). A consortium of eight Department of Energy (DOE) National Laboratories collaborate with NCAR and the NASA Global Modeling and Assimilation Office (GMAO). The laboratories are Argonne (ANL), Brookhaven (BNL) Los Alamos (LANL), Lawrence Berkeley (LBNL), Lawrence Livermore (LLNL), Oak Ridge (ORNL), Pacific Northwest (PNNL) and Sandia (SNL). The work plan focuses on scalablity for petascale computation and extensibility to a more comprehensive earth system model. Our stated goal is to support the DOE mission in climate change research by helping ... To determine the range of possible climate changes over the 21st century and beyond through simulations using a more accurate climate system model that includes the full range of human and natural climate feedbacks with increased realism and spatial resolution.

Drake, John B [ORNL; Worley, Patrick H [ORNL; Hoffman, Forrest M [ORNL; Jones, Phil [Los Alamos National Laboratory (LANL)

2009-01-01T23:59:59.000Z

308

Environmental stratification to model climate change impacts on biodiversity and rubber production in Xishuangbanna, Yunnan, China  

Science Journals Connector (OSTI)

Abstract An analysis and multi-model approach, based on a statistically derived Global Environmental Stratification (GEnS) and using a downscaled ensemble (n=63) of CIMP5 Earth System Models applied across four representative concentration pathways (RCP), has been used to project the impact of climate change on spatial distribution of bioclimatic zones and ecosystems within the biodiverse rich Xishuangbanna Prefecture, Yunnan Province, by the year 2050. Four bioclimatic zones and 9 strata were identified, overlaid with protected areas, and associated with on-going landuse change, i.e. a rapid increase in rubber plantation from 8% to 22% of total area between 2002 and 2010. Significant changes in the areal extent and distribution of all zones and strata are projected, with an averaged mean annual temperature increase ranging from 1.6C to 2.4C. By 2050, there are significant geographical shifts in all identified strata, with an average upward shift of 309m of elevation for all strata. On average, more than 75% of Xishuangbanna is predicted to shift to a different zone, with 96% shifting to a different stratum. The area conducive to rubber plantations, currently limited by climatic conditions, expands to nearly 75% of the total area. Climatic change potentially removes the bioclimatic barriers to further expansion of rubber plantations within the area and increases pressure on remaining biodiversity both within and outside of protected areas. The analysis provides the basis for understanding potential impacts of changing bioclimatic conditions on managed and unmanaged ecosystems and landuse change trends, within the context of ongoing rapid change and agricultural expansion in the area. Current efforts to conserve forests, biodiversity and traditional landuse systems require an improved understanding of both the projected climatic changes and the responses of biodiversity and traditional agricultural systems to changing conditions.

Robert J. Zomer; Antonio Trabucco; Mingcheng Wang; Rong Lang; Huafang Chen; Marc J. Metzger; Alex Smajgl; Philip Beckschfer; Jianchu Xu

2014-01-01T23:59:59.000Z

309

Journal of Environmental Management 84 (2007) 157172 Development and application of a GIS-based sediment budget model  

E-Print Network [OSTI]

-based sediment budget model Carlos E. Ramos-Scharro´ na,?, Lee H. MacDonaldb a Department of Geosciences Accelerated erosion and increased sediment yields resulting from changes in land use are a critical the changes in sediment production and delivery due to unpaved roads and other types of land disturbance

MacDonald, Lee

310

Conservation Practice Modeling Guide for SWAT and APEX  

E-Print Network [OSTI]

enhanced the ability of environmental managers, researchers, government officials, and urban planners to analyze current conditions and predict future impacts of land use changes on water quality. Despite the innovation of these technologies, modelers...

Waidler, D.; White, M.; Steglich, E.; Wang, S.; Williams, J.; Jones, C. A.; Srinivasan, R.

311

Integrated Assessment of Hadley Centre (HadCM2) Climate Change Projections on Agricultural Productivity and Irrigation Water Supply in the Conterminous United States.I. Climate change scenarios and impacts on irrigation water supply simulated with the HUMUS model.  

SciTech Connect (OSTI)

This paper describes methodology and results of a study by researchers at PNNL contributing to the water sector study of the U.S. National Assessment of Climate Change. The vulnerability of water resources in the conterminous U.S. to climate change in 10-y periods centered on 2030 and 2095--as projected by the HadCM2 general circulation model--was modeled with HUMUS (Hydrologic Unit Model of the U.S.). HUMUS consists of a GIS that provides data on soils, land use and climate to drive the hydrology model Soil Water Assessment Tool (SWAT). The modeling was done at the scale of the 2101 8-digit USGS hydrologic unit areas (HUA). Results are aggregated to the 4-digit and 2-digit (Major Water Resource Region, MWRR) scales for various purposes. Daily records of temperature and precipitation for 1961-1990 provided the baseline climate. Water yields (WY)--sum of surface and subsurface runoff--increases from the baseline period over most of the U.S. in 2030 and 2095. In 2030, WY increases in the western US and decreases in the central and southeast regions. Notably, WY increases by 139 mm from baseline in the Pacific NW. Decreased WY is projected for the Lower Mississippi and Texas Gulf basins, driven by higher temperatures and reduced precipitation. The HadCM2 2095 scenario projects a climate significantly wetter than baseline, resulting in WY increases of 38%. WY increases are projected throughout the eastern U.S. WY also increases in the western U.S. Climate change also affects the seasonality of the hydrologic cycle. Early snowmelt is induced in western basins, leading to dramatically increased WYs in late winter and early spring. The simulations were run at current (365 ppm) and elevated (560 ppm) atmospheric CO2 concentrations to account for the potential impacts of the CO2-fertilization effect. The effects of climate change scenario were considerably greater than those due to elevated CO2 but the latter, overall, decreased losses and augmented increases in water yield.

Rosenberg, Norman J.; Brown, Robert A.; Izaurralde, R Cesar C.; Thomson, Allison M.

2003-06-30T23:59:59.000Z

312

Comparison of problem model change mechanisms issued from CSP and TRIZ  

E-Print Network [OSTI]

1 Comparison of problem model change mechanisms issued from CSP and TRIZ RRoollaanndd DDee GGuuiioo satisfaction problem (CSP), on the other hand. Keywords: over-constrained problems, dialectical methods issued from CSP and TRIZ 2 · a set of evaluation parameters, which represent the objective of the problem

Paris-Sud XI, Université de

313

Selected translated abstracts of Russian-language climate-change publications. 4: General circulation models  

SciTech Connect (OSTI)

This report presents English-translated abstracts of important Russian-language literature concerning general circulation models as they relate to climate change. Into addition to the bibliographic citations and abstracts translated into English, this report presents the original citations and abstracts in Russian. Author and title indexes are included to assist the reader in locating abstracts of particular interest.

Burtis, M.D. [comp.] [Oak Ridge National Lab., TN (United States). Carbon Dioxide Information Analysis Center; Razuvaev, V.N.; Sivachok, S.G. [All-Russian Research Inst. of Hydrometeorological Information--World Data Center, Obninsk (Russian Federation)

1996-10-01T23:59:59.000Z

314

An exploration of the stages of change model in a group treatment program for male batterers  

E-Print Network [OSTI]

The purpose of this study was to investigate the adequacy of the Stages of Change model in a group therapy treatment program for male batterers. The sample consisted of three groups with a total sample size of 22 participants. Data for this study...

Wells, Robert Davis

2005-02-17T23:59:59.000Z

315

Modeling and Generating Daily Changes in Market Variables Using A Multivariate Mixture of Normal Distributions  

E-Print Network [OSTI]

Modeling and Generating Daily Changes in Market Variables Using A Multivariate Mixture of Normal Distributions Jin Wang Department of Mathematics and Computer Science Valdosta State University Valdosta, GA 31698-0040 January 28, 2000 Abstract The mixture of normal distributions provides a useful extension

Wang, Jin

316

Modeling and Simulation of Solar PV Arrays under Changing Illumination Conditions  

E-Print Network [OSTI]

the amount of electric power that may be generated from the solar panel at time of use. To be specificModeling and Simulation of Solar PV Arrays under Changing Illumination Conditions Dzung D Nguyen shadows (a passing cloud) on the output power of solar PV arrays. Each solar array is composed of a matrix

Lehman, Brad

317

Modeling the response of plants and ecosystems to elevated CO{sub 2} and climate change  

SciTech Connect (OSTI)

While the exact effects of elevated CO{sub 2} on global climate are unknown, there is a growing consensus among climate modelers that global temperature and precipitation will increase, but that these changes will be non-uniform over the Earth`s surface. In addition to these potential climatic changes, CO{sub 2} also directly affects plants via photosynthesis, respiration, and stomatal closure. Global climate change, in concert with these direct effects of CO{sub 2} on plants, could have a significant impact on both natural and agricultural ecosystems. Society`s ability to prepare for, and respond to, such changes depends largely on the ability of climate and ecosystem researchers to provide predictions of regional level ecosystem responses with sufficient confidence and adequate lead time.

Reynolds, J.F.; Hilbert, D.W.; Chen, Jia-lin; Harley, P.C.; Kemp, P.R.; Leadley, P.W.

1992-03-01T23:59:59.000Z

318

Modeling the response of plants and ecosystems to elevated CO sub 2 and climate change  

SciTech Connect (OSTI)

While the exact effects of elevated CO{sub 2} on global climate are unknown, there is a growing consensus among climate modelers that global temperature and precipitation will increase, but that these changes will be non-uniform over the Earth's surface. In addition to these potential climatic changes, CO{sub 2} also directly affects plants via photosynthesis, respiration, and stomatal closure. Global climate change, in concert with these direct effects of CO{sub 2} on plants, could have a significant impact on both natural and agricultural ecosystems. Society's ability to prepare for, and respond to, such changes depends largely on the ability of climate and ecosystem researchers to provide predictions of regional level ecosystem responses with sufficient confidence and adequate lead time.

Reynolds, J.F.; Hilbert, D.W.; Chen, Jia-lin; Harley, P.C.; Kemp, P.R.; Leadley, P.W.

1992-03-01T23:59:59.000Z

319

Baseline for Climate Change: Modeling Watershed Aquatic Biodiversity Relative to Environmental and Anthropogenic Factors  

SciTech Connect (OSTI)

Objectives of the two-year study were to (1) establish baselines for fish and macroinvertebrate community structures in two mid-Atlantic lower Piedmont watersheds (Quantico Creek, a pristine forest watershed; and Cameron Run, an urban watershed, Virginia) that can be used to monitor changes relative to the impacts related to climate change in the future; (2) create mathematical expressions to model fish species richness and diversity, and macroinvertebrate taxa and macroinvertebrate functional feeding group taxa richness and diversity that can serve as a baseline for future comparisons in these and other watersheds in the mid-Atlantic region; and (3) heighten peoples awareness, knowledge and understanding of climate change and impacts on watersheds in a laboratory experience and interactive exhibits, through internship opportunities for undergraduate and graduate students, a week-long teacher workshop, and a website about climate change and watersheds. Mathematical expressions modeled fish and macroinvertebrate richness and diversity accurately well during most of the six thermal seasons where sample sizes were robust. Additionally, hydrologic models provide the basis for estimating flows under varying meteorological conditions and landscape changes. Continuations of long-term studies are requisite for accurately teasing local human influences (e.g. urbanization and watershed alteration) from global anthropogenic impacts (e.g. climate change) on watersheds. Effective and skillful translations (e.g. annual potential exposure of 750,000 people to our inquiry-based laboratory activities and interactive exhibits in Virginia) of results of scientific investigations are valuable ways of communicating information to the general public to enhance their understanding of climate change and its effects in watersheds.

Maurakis, Eugene G

2010-10-01T23:59:59.000Z

320

Projected Changes to the Southern Hemisphere Ocean and Sea Ice in the IPCC AR4 Climate Models  

Science Journals Connector (OSTI)

Fidelity and projected changes in the climate models, used for the Intergovernmental Panel on Climate Change (IPCC) Fourth Assessment Report (AR4), are assessed with regard to the Southern Hemisphere extratropical ocean and sea ice systems. While ...

Alexander Sen Gupta; Agus Santoso; Andra S. Taschetto; Caroline C. Ummenhofer; Jessica Trevena; Matthew H. England

2009-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "land change modeler" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Resource Assessment and Land Use Change  

Broader source: Energy.gov [DOE]

Presented at the U.S. Department of Energy Light Duty Vehicle Workshop in Washington, D.C. on July 26, 2010.

322

Creating spatially continuous maps of past land cover from point estimates: A new statistical approach applied to pollen data  

Science Journals Connector (OSTI)

Abstract Reliable estimates of past land cover are critical for assessing potential effects of anthropogenic land-cover changes on past earth surface-climate feedbacks and landscape complexity. Fossil pollen records from lakes and bogs have provided important information on past natural and human-induced vegetation cover. However, those records provide only point estimates of past land cover, and not the spatially continuous maps at regional and sub-continental scales needed for climate modelling. We propose a set of statistical models that create spatially continuous maps of past land cover by combining two data sets: 1) pollen-based point estimates of past land cover (from the REVEALS model) and 2) spatially continuous estimates of past land cover, obtained by combining simulated potential vegetation (from LPJ-GUESS) with an anthropogenic land-cover change scenario (KK10). The proposed models rely on statistical methodology for compositional data and use Gaussian Markov Random Fields to model spatial dependencies in the data. Land-cover reconstructions are presented for three time windows in Europe: 0.05, 0.2, and 6ka years before present (BP). The models are evaluated through cross-validation, deviance information criteria and by comparing the reconstruction of the 0.05ka time window to the present-day land-cover data compiled by the European Forest Institute (EFI). For 0.05ka, the proposed models provide reconstructions that are closer to the EFI data than either the REVEALS- or LPJ-GUESS/KK10-based estimates; thus the statistical combination of the two estimates improves the reconstruction. The reconstruction by the proposed models for 0.2ka is also good. For 6ka, however, the large differences between the REVEALS- and LPJ-GUESS/KK10-based estimates reduce the reliability of the proposed models. Possible reasons for the increased differences between REVEALS and LPJ-GUESS/KK10 for older time periods and further improvement of the proposed models are discussed.

Behnaz Pirzamanbein; Johan Lindstrm; Anneli Poska; Shinya Sugita; Anna-Kari Trondman; Ralph Fyfe; Florence Mazier; Anne B. Nielsen; Jed O. Kaplan; Anne E. Bjune; H. John B. Birks; Thomas Giesecke; Mikhel Kangur; Ma?gorzata Lata?owa; Laurent Marquer; Benjamin Smith; Marie-Jos Gaillard

2014-01-01T23:59:59.000Z

323

Farming: A Climate Change Culprit  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Farming: A Climate Change Culprit Farming: A Climate Change Culprit Simulations run at NERSC show impact of land-use change on African monsoon precipitation June 7, 2014 | Tags:...

324

Savannah River Site Land Use Plan - May, 2013 i SRNS-RP-2013-00162  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Savannah River Site Land Use Plan - May, 2013 i Savannah River Site Land Use Plan - May, 2013 i SRNS-RP-2013-00162 Savannah River Site Land Use Plan - May, 2013 i Table of Contents 1.0 - Purpose p1 2.0 - Executive Summary p1 3.0 - SRS Land Use Overview p5 Assumptions Current Land Use Leases, Transfers and Other Land Use Actions Future Land Use Land Use Issues 4.0 - Land Use Planning and Control for Existing Missions p13 Cleanup, Production and Support Missions Natural and Cultural Resource Management 5.0 - Process for Future Land Use Changes p15 Introduction Process Overview Process Description 6.0 - Summary p19 7.0 - References p20 8.0 - Acronyms p21 Savannah River Site Land Use Plan - May, 2013 i

325

The atmospheric chemistry of trace gases and particulate matter emitted by different land uses in Borneo  

Science Journals Connector (OSTI)

...photochemistry and land-system change using measurements...Coupling in the Earth System (OP3/ACES) campaign...guineensis Elaeis oleifera hybrids of the progeny...East Asian land-system change on atmospheric...and land cover: solar radiation is efficiently...based on the vertical wind. There is no consensus...

2011-01-01T23:59:59.000Z

326

Bureau of Land Management - Land Use Planning | Open Energy Informatio...  

Open Energy Info (EERE)

Jump to: navigation, search OpenEI Reference LibraryAdd to library Web Site: Bureau of Land Management - Land Use Planning Abstract The BLM's Resource Management Plans (Land Use...

327

The influence of Hadley circulation intensity changes on extratropical climate in an idealized model  

SciTech Connect (OSTI)

Experiments have been performed using a simple global model with idealized physics and zonally symmetrical forcings to investigate the influence of Hadley circulation intensity changes on extratropical climate. The heating within the Tropics is latitudinally concentrated, while the heating in the extratropics is kept unchanged. This leads to an increase in the intensity of the Hadley circulation. As found earlier by Hou, along with the increase in the intensity of the Hadley circulation, there is a statistically significant temperature increase in the winter high latitudes. Zonal-mean diagnostics have been performed in order to identify the link between the changes in the Tropics and the extratropics. Detailed diagnostics of the heat budget shows that warming in the winter high latitudes is induced by changes in the mean meridional circulation, over the opposing cooling effects caused by changes in the eddy heat fluxes. Such a change is consistent with an equatorward shift of the jet stream and its associated heating pattern. It is suggested that the equatorward shift in jet position is caused by an increase in westerly acceleration within the Tropics associated with the enhancement in the intensity of the Hadley circulation. Limitations of the model are also discussed. 28 refs., 16 figs.

Chang, E.K.M. [Massachusetts Institute of Technology, Cambridge, MA (United States)] [Massachusetts Institute of Technology, Cambridge, MA (United States)

1995-06-01T23:59:59.000Z

328

Water, Land and People  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Water, Land and People Water, Land and People Nature Bulletin No. 251 January 8, 1983 Forest Preserve District of Cook County George W. Dunne, President Roland F. Eisenbeis, Supt. of Conservation WATER, LAND AND PEOPLE "Water, Land and People" is the title of a book which, like "Road to Survival", should be read by every American. Water, and its uses or control, has become a vital national problem. Some places, some years, we have too much of it and suffer disastrous floods. Elsewhere we have too little. In cities like New York and Los Angeles -- even in many inland towns -- and in the western lands which depend upon irrigation, the demand far exceeds the supply. Our Congress is beseeched for huge appropriations to provide flood control, navigation, electric power and irrigation.

329

Climate change projections using the IPSL-CM5 Earth System Model: from CMIP3 to CMIP5  

E-Print Network [OSTI]

Climate change projections using the IPSL-CM5 Earth System Model: from CMIP3 to CMIP5 J relevant to the climate system, it may be referred to as an Earth System Model. However, the IPSL-CM5 model climate and Earth System Models, both developed in France and contributing to the 5th coupled model

Codron, Francis

330

Modeling economic impacts of climate change on U.S. forests  

E-Print Network [OSTI]

% S and +100% N" Scenario . . . 123 Table 5. 12. Economic Welfare by Decade of the "+100% S and +100% N" Scenario . 125 Table 5. 13. Total Welfare Impacts, Relative to the Base, of the "- 50% S and -50% N" Scenario Without modeling changes in Canadian...' surplus in the Pacific Northwest under the "-50% S and -50% N" scenario, relative to the base scenario . . 102 Figure 5. 29. % Change in producers' surplus in the South Central and Southeast under the "-50% S and -50% N" scenario, relative to the base...

Sousa, Claudio Ney Martins De

1994-01-01T23:59:59.000Z

331

Model study of shoreline changes due to a series of offshore breakwaters  

E-Print Network [OSTI]

MODEL STUDY OF SHORELINE CHANGES DUE TO A SERIES OF OFFSHORE BREAKHATERS A Thesis by DONALD ALAN CORDS Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE... May 1986 Hajor Subject: Ocean Engineering NODEL STUDY OF SHORELINE CHANGES DUE TD A SERIES OF OFFSHORE BREAKHATERS A Thesis by DONALD ALAN CORDS Approved as to style and content by: ohn . er sc (Chairman) o ert . a a (Nember ) o er . ei...

Cords, Donald Alan

2012-06-07T23:59:59.000Z

332

The Impact of Biofuel and Greenhouse Gas Policies on Land Management, Agricultural Production, and Environmental Quality  

E-Print Network [OSTI]

and empirical modeling. First, a simple conceptual model of land allocation and management is used to illustrate how bioenergy policies and GHG mitigation incentives could influence market prices, shift the land supply between alternative uses, alter management...

Baker, Justin Scott

2012-10-19T23:59:59.000Z

333

Agriculture, Land Use, Energy and Carbon Emission Impacts of Global Biofuel Mandates to Mid-Century  

SciTech Connect (OSTI)

Three potential future scenarios of expanded global biofuel production are presented here utilizing the GCAM integrated assessment model. These scenarios span a range that encompasses on the low end a continuation of existing biofuel production policies to two scenarios that would require an expansion of current targets as well as an extension of biofuels targets to other regions of the world. Conventional oil use is reduced by 4-8% in the expanded biofuel scenarios, which results in a decrease of in CO2 emissions on the order of 1-2 GtCO2/year by mid-century from the global transportation sector. The regional distribution of crop production is relatively unaffected, but the biofuels targets do result in a marked increase in the production of conventional crops used for energy. Producer prices of sugar and corn reach levels about 12% and 7% above year 2005 levels, while the increased competition for land causes the price of food crops such as wheat, although not used for bioenergy in this study, to increase by 1 to 2%. The amount of land devoted to growing all food crops and dedicated bioenergy crops is increased by about 10% by 2050 in the High biofuel case, with concurrent decreases in other uses of land such as forest and pasture. In both of the expanded biofuels cases studied, there is an increase in net cumulative carbon emissions for the first couple of decades due to these induced land use changes. However, the difference in net cumulative emissions from the biofuels expansion decline by about 2035 as the reductions in energy system emissions exceed further increases in emissions from land use change. Even in the absence of a policy that would limit emissions from land use change, the differences in net cumulative emissions from the biofuels scenarios reach zero by 2050, and are decreasing further over time in both cases.

Wise, Marshall A.; Dooley, James J.; Luckow, Patrick; Calvin, Katherine V.; Kyle, G. Page

2014-02-01T23:59:59.000Z

334

The Role of Asia in Mitigating Climate Change: Results from the Asia Modeling Exercise  

SciTech Connect (OSTI)

In 2010, Asia accounted for 60% of global population, 39% of Gross World Product, 44% of global energy consumption and nearly half of the worlds energy system CO2 emissions. Thus, Asia is an important region to consider in any discussion of climate change or climate change mitigation. This paper explores the role of Asia in mitigating climate change, by comparing the results of 23 energy-economy and integrated assessment models. We focus our analysis on seven key areas: base year data, future energy use and emissions absent climate policy, the effect of urban and rural development on future energy use and emissions, the role of technology in emissions mitigation, regional emissions mitigation, and national climate policies

Calvin, Katherine V.; Clarke, Leon E.; Krey, Volker; Blanford, Geoffrey J.; Jiang, Kejun; Kainuma, M.; Kriegler, Elmar; Luderer, Gunnar; Shukla, Priyadarshi R.

2012-12-01T23:59:59.000Z

335

land.PDF  

Broader source: Energy.gov (indexed) [DOE]

2 2 AUDIT REPORT SALE OF LAND AT OAK RIDGE U.S. DEPARTMENT OF ENERGY OFFICE OF INSPECTOR GENERAL OFFICE OF AUDIT SERVICES May 2001 DEPARTMENT OF ENERGY Washington, DC 20585 May 7, 2001 MEMORANDUM FOR THE SECRETARY FROM: Gregory H. Friedman (Signed) Inspector General SUBJECT: INFORMATION: Audit Report on the "Sale of Land at Oak Ridge" BACKGROUND Under the Atomic Energy Act of 1954, the U.S. Department of Energy (Department) may sell land in the performance of identified programmatic functions. The functions specified in the Atomic Energy Act include encouraging scientific and industrial progress, controlling special nuclear

336

Tunneling Model of Phase Changes in Tetragonal Rare-Earth Crystals  

Science Journals Connector (OSTI)

The crystal-field theory for a rare-earth ion in tetragonal symmetry is studied in a semiclassical description. The low-lying quantum states are interpreted as tunneling states between classical minima. At low temperatures, spontaneous lattice distortions occur to lower some of the minima relative to others. The model is applied to DyVO4 and TbVO4 and is shown to lead to a good understanding of why they show phase changes and unusual paramagnetic properties.

E. Pytte and K. W. H. Stevens

1971-09-27T23:59:59.000Z

337

Developing a change-point principal component predictive model for energy use in a supermarket  

E-Print Network [OSTI]

of the Thanksgiving Day. On these days , the store opens fewer than 18 hours. The store has a typical supermarket electrical consumption pattern (2). The estimated distribution of the peak demand of the electrical systems is: refrigeration cases and compressors... on heat recovery from the refrigeration system and, therefore, does not consume electricity; however the COP of the refrigeration system increases as the ambient temperature decreases. Hence, it is desirable to develop a more general change point model...

Chen, Lu

2012-06-07T23:59:59.000Z

338

E-Print Network 3.0 - automated land evaluation Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Analysis of Aircraft Landing Scheduling for Non-Controlled Airports AIAA-2004... Modeling Methodologies Evaluation Flight Simulation Enhancements for this...

339

MODIS Collection 5 global land cover: Algorithm refinements and characterization of new datasets  

E-Print Network [OSTI]

information is required to parameterize land surface processes in regional-to-global scale Earth system models

Wisconsin at Madison, University of

340

Estimated Annual Net Change in Soil Carbon per US County  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Estimated Annual Net Change in Soil Carbon per US County These data represent the estimated net change (Megagram per year) in soil carbon due to changes in the crop type and tillage intensity. Estimated accumulation of soil carbon under Conservation Reserve Program (CRP)lands is included in these estimates. Negative values represent a net flux from the atmosphere to the soil; positive values represent a net flux from the soil to the atmosphere. As such, soil carbon sequestration is represented here as a negative value. The method of analysis is based on empirical relationshipsbetween land management and soil carbon. The method for modeling land management and estimating soil carbonchange, used to generate these data, is described in the following publication:

Note: This page contains sample records for the topic "land change modeler" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

Land Management - Hanford Site  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

land. Long-Term Stewardship For more information, contact the Site Real Estate Officer, Boyd Hathaway at (509) 376-7340 or by email at HBBoydHathaway@rl.gov. Last Updated 0331...

342

National Land Cover Data  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

National Land Cover Data National Land Cover Data Metadata also available as Metadata: q Identification_Information q Data_Quality_Information q Spatial_Data_Organization_Information q Spatial_Reference_Information q Entity_and_Attribute_Information q Distribution_Information q Metadata_Reference_Information Identification_Information: Citation: Citation_Information: Originator: United States Geological Survey Publication_Date: Unpublished Material Title: National Land Cover Data Edition: 01 Geospatial_Data_Presentation_Form: raster digital data Other_Citation_Details: Classification and processing of the orginal remote sensing products was done by the Multi-Resolution Land Characterization Consortium and EROS Data Center (U.S. Geological Survey). The Consortium includes the

343

Simulating Sustainability: Conjunctive Land and Water Management in the Upper  

E-Print Network [OSTI]

Simulating Sustainability: Conjunctive Land and Water Management in the Upper Santa Cruz River Water Issue: Introduction and Context This research project addresses a chronic water management issue in Arizona: management and allocation of water supplies in areas undergoing rapid growth and land use changes

Fay, Noah

344

Survey of Critical Wetlands Bureau of Land Management Lands  

E-Print Network [OSTI]

Survey of Critical Wetlands Bureau of Land Management Lands South Park, Park County, Colorado 2003 Delivery Colorado State University #12;Survey of Critical Wetlands Bureau of Land Management Lands South place from unique wetlands to high quality grasslands to the bristlecone pine forests to its alpine

345

Groningen Active Living Model (GALM): stimulating physical activity in sedentary older adults; validation of the behavioral change model  

Science Journals Connector (OSTI)

Background A significant proportion of older adults in The Netherlands do not participate regularly in leisure-time physical activity. The Groningen Active Living Model (GALM) was developed to change this situation for the better. Longitudinal results of the validation of the GALM behavioral change model are presented. Methods We obtained data on potentially mediating variables of physical activity behavior change (self-efficacy, social support, perceived fitness, and enjoyment) from 96 participants in a prospective study during the 18 months the GALM strategy lasted. Results Prospective analyses revealed significant differences in several potentially mediating variables, although some of these differences were contrary to our hypothesis. Discriminant analysis resulted in canonical correlations of 0.50 after 6 months and 0.66 after 18 months of program participation between adherers and nonadherers, respectively; 73.8 and 80.0% of the subjects were classified correctly. Conclusions Based on the results, it can be concluded that we partially succeeded in manipulating the potentially mediating variables by means of our GALM strategy. Several mediating variables were identified that reliably discriminated long-term adherers from nonadherers, expanding the generalizability of social cognitive theory-driven variables to a Dutch population.

Martin Stevens; Koen A.P.M Lemmink; Marieke J.G van Heuvelen; Johan de Jong; Piet Rispens

2003-01-01T23:59:59.000Z

346

On the connection between continental-scale land surface processes and the tropical climate in a coupled ocean-atmosphere-land system  

SciTech Connect (OSTI)

The impact of global tropical climate to perturbations in land surface processes (LSP) are evaluated using perturbations given by different LSP representations of continental-scale in a global climate model that includes atmosphere-ocean interactions. One representation is a simple land scheme, which specifies climatological albedos and soil moisture availability. The other representation is the more comprehensive Simplified Simple Biosphere Model, which allows for interactive soil moisture and vegetation biophysical processes. The results demonstrate that LSP processes such as interactive soil moisture and vegetation biophysical processes have strong impacts on the seasonal mean states and seasonal cycles of global precipitation, clouds, and surface air temperature. The impact is especially significant over the tropical Pacific. To explore the mechanisms for such impact, different LSP representations are confined to selected continental-scale regions where strong interactions of climate-vegetation biophysical processes are present. We find that the largest impact is mainly from LSP perturbations over the tropical African continent. The impact is through anomalous convective heating in tropical Africa due to changes in the surface heat fluxes, which in turn affect basinwide teleconnections in the Pacific through equatorial wave dynamics. The modifications in the equatorial Pacific climate are further enhanced by strong air-sea coupling between surface wind stress and upwelling, as well as effect of ocean memory. Our results further suggest that correct representations of land surface processes, land use change and the associated changes in the deep convection over tropical Africa are crucial to reducing the uncertainty when performing future climate projections under different climate change scenarios.

Ma, Hsi-Yen; Mechoso, C. R.; Xue, Yongkang; Xiao, Heng; Neelin, David; Ji, Xuan

2013-11-15T23:59:59.000Z

347

ARM - Evaluation Product - Critical soil quantities for describing land  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

ProductsCritical soil quantities for describing land ProductsCritical soil quantities for describing land properties Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Evaluation Product : Critical soil quantities for describing land properties 1994.01.01 - 2012.12.31 Site(s) SGP General Description The ARMBELAND is a subset of the ARM Best Estimate (ARMBE) products for supporting community land-atmospheric research and land model developments. It contains several critical soil quantities that ARM has been measuring for many years for describing land properties. The quantities in ARMBE-Land are averaged over one hour time interval, consistent with other ARMBE datasets. It is recommended to use with other ARMBE data products such as ARMBECLDRAD (cloud and radiative fluxes) and ARMBEATM (surface

348

Recent Trends in Land Tenure in Texas.  

E-Print Network [OSTI]

and a live- stock program was instituted. Long term cash leases presented problems during this period of fluctuating commodity prices, One- year farm rental agreements, on the other hand, failed to provide the necessary inducements for the long... ............................................................................. 24 Effect of changes in land tenure on community institutions .................... 25 Landlord-tenant relations ........................................................................................ 26 Farm rental agreements...

Motheral, Joe

1944-01-01T23:59:59.000Z

349

Modeling of Oceanic Gas Hydrate Instability and Methane Release in Response to Climate Change  

SciTech Connect (OSTI)

Paleooceanographic evidence has been used to postulate that methane from oceanic hydrates may have had a significant role in regulating global climate, implicating global oceanic deposits of methane gas hydrate as the main culprit in instances of rapid climate change that have occurred in the past. However, the behavior of contemporary oceanic methane hydrate deposits subjected to rapid temperature changes, like those predicted under future climate change scenarios, is poorly understood. To determine the fate of the carbon stored in these hydrates, we performed simulations of oceanic gas hydrate accumulations subjected to temperature changes at the seafloor and assessed the potential for methane release into the ocean. Our modeling analysis considered the properties of benthic sediments, the saturation and distribution of the hydrates, the ocean depth, the initial seafloor temperature, and for the first time, estimated the effect of benthic biogeochemical activity. The results show that shallow deposits--such as those found in arctic regions or in the Gulf of Mexico--can undergo rapid dissociation and produce significant methane fluxes of 2 to 13 mol/yr/m{sup 2} over a period of decades, and release up to 1,100 mol of methane per m{sup 2} of seafloor in a century. These fluxes may exceed the ability of the seafloor environment (via anaerobic oxidation of methane) to consume the released methane or sequester the carbon. These results will provide a source term to regional or global climate models in order to assess the coupling of gas hydrate deposits to changes in the global climate.

Reagan, Matthew; Reagan, Matthew T.; Moridis, George J.

2008-04-15T23:59:59.000Z

350

Career Map: Land Acquisition Specialist  

Broader source: Energy.gov [DOE]

The Wind Program's Career Map provides job description information for Land Acquisition Specialist positions.

351

Integrated assessment of Hadley Centre (HadCM2) climate change projections on agricultural productivity and irrigation water supply in the conterminous United States: I. Climate change scenarios and impacts on irrigation water supply simulated with the HUMUS model  

Science Journals Connector (OSTI)

In response to a congressional mandate, the US Global Change Research Program organized a National Assessment of Climate Change focusing on geographic regions (e.g. Alaska, Great Plains) and sectors (e.g. public health, agriculture, water resources). This paper describes methodology and results of a study by researchers at the Pacific Northwest National Laboratory contributing to the water sector analysis. The subsequent paper makes use of the water supply results to estimate the climate change impacts on irrigated agriculture. The vulnerability of water resources in the conterminous US to climate changes in 10-year periods centered on 2030 and 2095 as projected by the Hadley/United Kingdom Meteorological Office (UKMO) general circulation model (GCM; HadCM2) were modeled using the Hydrologic Unit Model for the United States (HUMUS). HUMUS, a biophysically based hydrology model, consists of a Geographical Information System (GIS) that provides data on soils, land use and climate to drive the Soil Water Assessment Tool (SWAT). The modeling was done at the scale of the eight-digit United States Geological Survey (USGS) Hydrologic Unit Area (HUA) of which there are 2101 in the conterminous US. Results are aggregated to the four- and two-digit (major water resource region, MWRR) scales for various purposes. Daily records of maximum/minimum temperature and precipitation (PPT) from 1961 to 1990 provided the baseline climate. Water yields (WY), used as a measure of water supply for irrigation, increases from the 19611990 baseline period over most of the US in 2030 and 2095. In 2030, WY increases in the western US and decreases in the central and southeast regions. Notably, WY increases by 139mm (35%) from baseline in the Pacific Northwest. Driven by higher temperatures and reduced precipitation, WY is projected to decrease in the Lower Mississippi and Texas Gulf basins. The HadCM2 (2095) scenario projects a climate significantly wetter than baseline, resulting in water yield increases of 38% on average. Water yield increases are projected to be significant throughout the eastern US39% in the Ohio basin, for example. Water yields increase significantly in the western US, as well57 and 76% in the Upper and Lower Colorado, respectively. Climate change also affects the seasonality of the hydrologic cycle. Early snowmelt is induced in western basins, leading to dramatically increased water yields in late winter and early spring. The simulations were run at current (365ppm) and elevated (560ppm) atmospheric CO2 concentrations [CO2] to account for the potential impacts of the CO2-fertilization effect. The effects of climate change scenario were considerably greater than those due to elevated [CO2] but the latter, overall, decreased losses and augmented increases in water yield.

Norman J Rosenberg; Robert A Brown; R.Cesar Izaurralde; Allison M Thomson

2003-01-01T23:59:59.000Z

352

Conceptualization of a fresh groundwater lens influenced by climate change: A modeling study of an arid-region island in the Persian Gulf, Iran  

Science Journals Connector (OSTI)

Summary Understanding the fresh groundwater lens (FGL) behavior and potential threat of climatic-induced seawater intrusion (SWI) are significant for the future water resources management of many small islands. In this paper, the FGL of Kish Island, an arid-region case in the Persian Gulf, Iran, is modeled using two-dimensional (2D) and three-dimensional (3D) simulations. These simulations are based on the application of SUTRA, a density-dependent groundwater numerical model. Also, the numerical model parameters are calibrated using PEST, an automated parameter estimation code. Firstly a detailed conceptualization of the FGL model is completed to understand the sensitivity of the FGL to some particular aspects of the model prior to analysis of climate change simulations. For these investigations, the FGL system is defined based on Kish Island system to accomplish the integrated comparison of features of a conceptual model that are representative of real-world systems. This is the first study which adopts such an approach. The comparison of cross-sectional simulations suggests that the two-layer properties of the Kish Island aquifer have a significant influence on the FGL while the impacts of lateral-boundary irregularities are negligible. The impacts of sea-level rise (SLR), associated land-surface inundation (LSI), and variations in recharge rate on the FGL salinization of Kish Island are investigated numerically. Variations of SLR value (14m) and net recharge rate (1724mm/year) are considered to cover a possible range of climatic scenarios in this arid-region island. The 2D and 3D simulation results demonstrate that LSI caused by SLR and recharge rate variation impacts are more important factors in the FGL in comparison to estimated SLR impacts without LSI. It is also shown that climate change impacts on the FGL are long-term to reach a new FGL equilibrium in the case of Kish Islands aquifer system. The comparative analysis of 2D and 3D results shows that three-dimensionality is a significant factor, especially in large-scale 3D systems of small islands. The results of this study are expected to have implications for the understanding and management of the fresh groundwater resources of Kish Island and are also expected to be relevant to the study of the impact of climate change on groundwater resources on islands worldwide.

Davood Mahmoodzadeh; Hamed Ketabchi; Behzad Ataie-Ashtiani; Craig T. Simmons

2014-01-01T23:59:59.000Z

353

Automobile technology, hydrogen and climate change: a long term modelling analysis  

Science Journals Connector (OSTI)

The transitions in the global automobile sector in the 21st century are uncertain both in terms of technologies and energy carriers. A key driving force of technological change in the long term could be the need to mitigate GHG emissions. This paper examines the role of the passenger car sector in a GHG mitigation strategy and presents a scenario of the automobile technology choices when a price on greenhouse gas emissions is imposed on the global energy system. The analysis has been conducted with ERIS, a multiregional energy systems, 'bottom up' optimisation model that endogenises technology learning and allows a detailed technology representation, in addition to capturing competing demands for transportation fuels, including hydrogen. Our results provide some policy insights by illustrating the potential for hydrogen to contribute to climate change mitigation, but show that fuel cell cars are an option for climate policy only over the very long term.

Hal Turton; Leonardo Barreto

2007-01-01T23:59:59.000Z

354

A model for changes in coalbed permeability during primary and enhanced methane, recovery  

SciTech Connect (OSTI)

The natural fracture network of a dual-porosity coalbed reservoir is made up of two sets of orthogonal, and usually subvertically oriented, cleats. Coalbed permeability has been shown to vary exponentially with changes in the effective horizontal stress acting across the cleats through the cleat-volume compressibility, which is analogous to pore compressibility in porous rocks. A formulation for changes in the effective horizontal stress of coalbeds during primary methane recovery, which includes a Langmuir type curve shrinkage term, has been proposed previously. This paper presents a new version of the stress formulation by making a direct link between the volumetric matrix strain and the amount of gas desorbed. The resulting permeability model can be extended readily to account for adsorption-induced matrix swelling as well as matrix shrinkage during enhanced methane recovery involving the injection of an inert gas or gas mixture into the seams. The permeability model is validated against a recently published pressure-dependent permeability multiplier curve representative of the San Juan basin coalbeds at post-dewatering production stages. The extended permeability model is then applied successfully to history matching a micropilot test involving the injection of flue gas (consisting mainly of CO{sub 2} and N{sub 2}) at the Fenn Big Valley, Alberta, Canada.

Shi, J.Q.; Durucan, S. [University of London Imperial College of Science Technology & Medicine, London (United Kingdom). Dept. of Environmental Science & Technology

2005-08-01T23:59:59.000Z

355

Siting Renewable Energy: Land Use and Regulatory Context  

E-Print Network [OSTI]

This article takes up the increasingly important land use question of siting for renewable energy. As concern over climate change grows, new policies are being crafted at all levels of government to support renewable energy as a way of reducing...

Outka, Uma

2010-01-01T23:59:59.000Z

356

Land-use Leakage  

SciTech Connect (OSTI)

Leakage occurs whenever actions to mitigate greenhouse gas emissions in one part of the world unleash countervailing forces elsewhere in the world so that reductions in global emissions are less than emissions mitigation in the mitigating region. While many researchers have examined the concept of industrial leakage, land-use policies can also result in leakage. We show that land-use leakage is potentially as large as or larger than industrial leakage. We identify two potential land-use leakage drivers, land-use policies and bioenergy. We distinguish between these two pathways and run numerical experiments for each. We also show that the land-use policy environment exerts a powerful influence on leakage and that under some policy designs leakage can be negative. International offsets are a potential mechanism to communicate emissions mitigation beyond the borders of emissions mitigating regions, but in a stabilization regime designed to limit radiative forcing to 3.7 2/m2, this also implies greater emissions mitigation commitments on the part of mitigating regions.

Calvin, Katherine V.; Edmonds, James A.; Clarke, Leon E.; Bond-Lamberty, Benjamin; Kim, Son H.; Wise, Marshall A.; Thomson, Allison M.; Kyle, G. Page

2009-12-01T23:59:59.000Z

357

Sensitivity of global tropical climate to land surface processes: Mean state and interannual variability  

SciTech Connect (OSTI)

This study examines the sensitivity of global tropical climate to land surface processes (LSP) using an atmospheric general circulation model both uncoupled (with prescribed SSTs) and coupled to an oceanic general circulation model. The emphasis is on the interactive soil moisture and vegetation biophysical processes, which have first order influence on the surface energy and water budgets. The sensitivity to those processes is represented by the differences between model simulations, in which two land surface schemes are considered: 1) a simple land scheme that specifies surface albedo and soil moisture availability, and 2) the Simplified Simple Biosphere Model (SSiB), which allows for consideration of interactive soil moisture and vegetation biophysical process. Observational datasets are also employed to assess the reality of model-revealed sensitivity. The mean state sensitivity to different LSP is stronger in the coupled mode, especially in the tropical Pacific. Furthermore, seasonal cycle of SSTs in the equatorial Pacific, as well as ENSO frequency, amplitude, and locking to the seasonal cycle of SSTs are significantly modified and more realistic with SSiB. This outstanding sensitivity of the atmosphere-ocean system develops through changes in the intensity of equatorial Pacific trades modified by convection over land. Our results further demonstrate that the direct impact of land-atmosphere interactions on the tropical climate is modified by feedbacks associated with perturbed oceanic conditions ("indirect effect" of LSP). The magnitude of such indirect effect is strong enough to suggest that comprehensive studies on the importance of LSP on the global climate have to be made in a system that allows for atmosphere-ocean interactions.

Ma, Hsi-Yen; Xiao, Heng; Mechoso, C. R.; Xue, Yongkang

2013-03-01T23:59:59.000Z

359

Global climate change model natural climate variation: Paleoclimate data base, probabilities and astronomic predictors  

SciTech Connect (OSTI)

This report was prepared at the Lamont-Doherty Geological Observatory of Columbia University at Palisades, New York, under subcontract to Pacific Northwest Laboratory it is a part of a larger project of global climate studies which supports site characterization work required for the selection of a potential high-level nuclear waste repository and forms part of the Performance Assessment Scientific Support (PASS) Program at PNL. The work under the PASS Program is currently focusing on the proposed site at Yucca Mountain, Nevada, and is under the overall direction of the Yucca Mountain Project Office US Department of Energy, Las Vegas, Nevada. The final results of the PNL project will provide input to global atmospheric models designed to test specific climate scenarios which will be used in the site specific modeling work of others. The primary purpose of the data bases compiled and of the astronomic predictive models is to aid in the estimation of the probabilities of future climate states. The results will be used by two other teams working on the global climate study under contract to PNL. They are located at and the University of Maine in Orono, Maine, and the Applied Research Corporation in College Station, Texas. This report presents the results of the third year`s work on the global climate change models and the data bases describing past climates.

Kukla, G.; Gavin, J. [Columbia Univ., Palisades, NY (United States). Lamont-Doherty Geological Observatory

1994-05-01T23:59:59.000Z

360

Position Description: Ph.D. Student in Vegetation Modeling and Climate Vulnerability Montana State University is seeking a Ph.D. student for a NASA Applied Sciences project on  

E-Print Network [OSTI]

of biological resources under climate and land use change. The project will use NASA resources to inform climate to present and under projected future climate and land use scenarios using NASA and other data and modelsPosition Description: Ph.D. Student in Vegetation Modeling and Climate Vulnerability Assessment

Hansen, Andrew J.

Note: This page contains sample records for the topic "land change modeler" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

Measurement and Modeling of Sorption-Induced Strain and Permeability Changes in Coal  

SciTech Connect (OSTI)

Strain caused by the adsorption of gases was measured in samples of subbituminous coal from the Powder River basin of Wyoming, U.S.A., and high-volatile bituminous coal from the Uinta-Piceance basin of Utah, U.S.A. using a newly developed strain measurement apparatus. The apparatus can be used to measure strain on multiple small coal samples based on the optical detection of the longitudinal strain. The swelling and shrinkage (strain) in the coal samples resulting from the adsorption of carbon dioxide, nitrogen, methane, helium, and a mixture of gases was measured. Sorption-induced strain processes were shown to be reversible and easily modeled with a Langmuir-type equation. Extended Langmuir theory was applied to satisfactorily model strain caused by the adsorption of gas mixtures using the pure gas Langmuir strain constants. The amount of time required to obtain accurate strain data was greatly reduced compared to other strain measurement methods. Sorption-induced changes in permeability were also measured as a function of pres-sure. Cleat compressibility was found to be variable, not constant. Calculated variable cleat-compressibility constants were found to correlate well with previously published data for other coals. During permeability tests, sorption-induced matrix shrinkage was clearly demonstrated by higher permeability values at lower pore pressures while holding overburden pressure constant. Measured permeability data were modeled using three dif-ferent permeability models from the open literature that take into account sorption-induced matrix strain. All three models poorly matched the measured permeability data because they overestimated the impact of measured sorption-induced strain on permeabil-ity. However, by applying an experimentally derived expression to the measured strain data that accounts for the confining overburden pressure, pore pressure, coal type, and gas type, the permeability models were significantly improved.

Eric P. Robertson

2005-10-01T23:59:59.000Z

362

SciTech Connect: Predicting Land-Ice Retreat and Sea-Level Rise...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Conference: Predicting Land-Ice Retreat and Sea-Level Rise with the Community Earth System Model Citation Details In-Document Search Title: Predicting Land-Ice Retreat and...

363

A Mechanism for LandAtmosphere Feedback Involving Planetary Wave Structures  

Science Journals Connector (OSTI)

While the ability of land surface conditions to influence the atmosphere has been demonstrated in various modeling and observational studies, the precise mechanisms by which landatmosphere feedback occurs are still largely unknown: particularly ...

Randal D. Koster; Yehui Chang; Siegfried D. Schubert

2014-12-01T23:59:59.000Z

364

A cellular automaton model for the change of public attitude regarding nuclear energy  

Science Journals Connector (OSTI)

A model was constructed to investigate how the public opinion on nuclear energy varies depending upon information environment and personal communication between people. Here the nuclear risk informed of by the newsmedia and the frequency of anti-nuclear movements are treated as exogenous variables. The information environment is assumed to be represented in terms of public opinion as well as those exogenous variables, and the public are assumed to vary, randomly but homogeneously in a global sense, their attitude regarding nuclear energy in accordance with the strength of information environment. Personal communication begins round some opinion leaders who were excited by the information environment, and the attitude of the public who are affected by the opinion leaders are secondarily changed to anti-nuclear or pronuclear states. Moreover the public attitude is also changed naturally in an exponential way with time. Public opinion is supposed to appear as a superposed result of these three modes of attitudinal change. Such public opinion is fed back to the information environment. All the treatments are discretized and the process of personal communication is modeled by the cellular automaton method. Each cell in this approach is assumed to take one discrete state of six possible states which represent the status of public opinion. Model constants are determined by fitting calculations to the actual fraction of opinion in Japan. From simulation with this model, the following become clear: (i) The society is a highly non-linear system with a self-organizing potential: (ii) In the society composed of one type of constituent members with a homogeneous characteristic, the trend of public opinion is catastrophically turned over only when the effort for ameliorating the public acceptance extended over a long period of time, such as education, persuasion and advertisement, exceeds a certain threshold, and (iii) in the case when the amount of information on nuclear risk released from the newsmedia is reduced continuously from now on, the acceptability of nuclear energy is remarkably improved so far as the extent of the reduction exceeds a certain threshold.

Teruaki Ohnishi

1991-01-01T23:59:59.000Z

365

Managing carbon in a multiple use world: The implications of land-use decision context for carbon management  

E-Print Network [OSTI]

Managing carbon in a multiple use world: The implications of land-use decision context for carbon, Boulder, 80309-0488, United States 1. Introduction Carbon management through changes in land, 2010). Human land-use change is the second largest contributor of increasing carbon dioxide

Neff, Jason

366

Bureau of Land Management - Land Use Planning Handbook | Open...  

Open Energy Info (EERE)

Bureau of Land Management - Land Use Planning Handbook Jump to: navigation, search OpenEI Reference LibraryAdd to library PermittingRegulatory Guidance - GuideHandbook: Bureau of...

367

Global modeling of cancer gene expression signa-Cancer leads to permanent changes in cell's physiological state and various  

E-Print Network [OSTI]

Global modeling of cancer gene expression signa- tures Cancer leads to permanent changes in cell cancer types. Less is known about the underlying biological processes, or relationships between different cancer types with respect to these changes. While each specific cancer type has a set of unique

Kaski, Samuel

368

Modeling hydrologic and water quality extremes in a changing climate: A statistical approach based on extreme value theory  

E-Print Network [OSTI]

Modeling hydrologic and water quality extremes in a changing climate: A statistical approach based on extreme value theory Erin Towler,1,2 Balaji Rajagopalan,1,3 Eric Gilleland,2 R. Scott Summers,1 David makes quantifying changes to hydrologic extremes, as well as associated water quality effects

Katz, Richard

369

MODIS Land Products Subsets  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Presentations Presentations Web and Web Services based tool that provides Subsets and Visualization of MODIS land products to facilitate land validation and field site characterization. S.K. Santhana Vannan; R. B. Cook; B. E. Wilson. AGU Fall Meeting, San Francisco, CA, December 14-18 2009 MODIS Land Product Subsets,S.K. Santhana Vannan; R. B. Cook. November, 2009 MODIS Web Service, S.K. Santhana Vannan. ORNL DAAC UWG Meeting, May 2009 Subsetting Tools for MODIS Land Products: Time-series data for field sites, R. B. Cook, S. M. Margle, S. K. Santhana Vannan, S. K. Holladay, and T. W. Beaty. Global Vegetation Workshop, Missoula MT, August 8-10, 2006 MODIS ASCII Subsets, R. B. Cook. May 2006 Subsets of Remote Sensing Products for AmeriFlux Sites: MODIS ASCII Subsets, AmeriFlux Annual Meeting, R. B. Cook, S. M. Margle, S. K. Holladay, F. A. Heinsch, and C. B. Schaaf. October 5-7, 2004, Boulder, Colorado

370

The new V8 diesel engine for Land Rover  

Science Journals Connector (OSTI)

After the launch of the 2.7-l TDV6 diesel engine for Jaguar, Land Rover and PSA ... family. The new 3.6-l TDV8 Diesel engine was developed for Land Rovers ... and Range Rover Sport models. The premium market seg...

Roland Ernst; Thomas Grnert; Paul Turner

2007-04-01T23:59:59.000Z

371

Understanding the Anthropogenically Forced Change of Equatorial Pacific Trade Winds in Coupled Climate Models  

Science Journals Connector (OSTI)

Understanding the change of equatorial Pacific trade winds is pivotal for understanding the global mean temperature change and the El NioSouthern Oscillation (ENSO) property change. The weakening of the Walker circulation due to anthropogenic ...

Baoqiang Xiang; Bin Wang; Juan Li; Ming Zhao; June-Yi Lee

2014-11-01T23:59:59.000Z

372

Hartle's model within the general theory of perturbative matchings: the change in mass  

E-Print Network [OSTI]

Hartle's model provides the most widely used analytic framework to describe isolated compact bodies rotating slowly in equilibrium up to second order in perturbations in the context of General Relativity. Apart from some explicit assumptions, there are some implicit, like the "continuity" of the functions in the perturbed metric across the surface of the body. In this work we sketch the basics for the analysis of the second order problem using the modern theory of perturbed matchings. In particular, the result we present is that when the energy density of the fluid in the static configuration does not vanish at the boundary, one of the functions of the second order perturbation in the setting of the original work by Hartle is not continuous. This discrepancy affects the calculation of the change in mass of the rotating star with respect to the static configuration needed to keep the central energy density unchanged.

Borja Reina; Ral Vera

2014-12-22T23:59:59.000Z

373

Integrated modeling of CO2 storage and leakage scenarios including transitions between super- and sub-critical conditions, and phase change between liquid and gaseous CO2  

SciTech Connect (OSTI)

Storage of CO{sub 2} in saline aquifers is intended to be at supercritical pressure and temperature conditions, but CO{sub 2} leaking from a geologic storage reservoir and migrating toward the land surface (through faults, fractures, or improperly abandoned wells) would reach subcritical conditions at depths shallower than 500-750 m. At these and shallower depths, subcritical CO{sub 2} can form two-phase mixtures of liquid and gaseous CO{sub 2}, with significant latent heat effects during boiling and condensation. Additional strongly non-isothermal effects can arise from decompression of gas-like subcritical CO{sub 2}, the so-called Joule-Thomson effect. Integrated modeling of CO{sub 2} storage and leakage requires the ability to model non-isothermal flows of brine and CO{sub 2} at conditions that range from supercritical to subcritical, including three-phase flow of aqueous phase, and both liquid and gaseous CO{sub 2}. In this paper, we describe and demonstrate comprehensive simulation capabilities that can cope with all possible phase conditions in brine-CO{sub 2} systems. Our model formulation includes: (1) an accurate description of thermophysical properties of aqueous and CO{sub 2}-rich phases as functions of temperature, pressure, salinity and CO{sub 2} content, including the mutual dissolution of CO{sub 2} and H{sub 2}O; (2) transitions between super- and subcritical conditions, including phase change between liquid and gaseous CO{sub 2}; (3) one-, two-, and three-phase flow of brine-CO{sub 2} mixtures, including heat flow; (4) non-isothermal effects associated with phase change, mutual dissolution of CO{sub 2} and water, and (de-) compression effects; and (5) the effects of dissolved NaCl, and the possibility of precipitating solid halite, with associated porosity and permeability change. Applications to specific leakage scenarios demonstrate that the peculiar thermophysical properties of CO{sub 2} provide a potential for positive as well as negative feedbacks on leakage rates, with a combination of self-enhancing and self-limiting effects. Lower viscosity and density of CO{sub 2} as compared to aqueous fluids provides a potential for self-enhancing effects during leakage, while strong cooling effects from liquid CO{sub 2} boiling into gas, and from expansion of gas rising towards the land surface, act to self-limit discharges. Strong interference between fluid phases under three-phase conditions (aqueous - liquid CO{sub 2} - gaseous CO{sub 2}) also tends to reduce CO{sub 2} fluxes. Feedback on different space and time scales can induce non-monotonic behavior of CO{sub 2} flow rates.

Pruess, K.

2011-05-15T23:59:59.000Z

374

Agriculture, Forestry and Other Land Use Mitigation Project Database | Open  

Open Energy Info (EERE)

Agriculture, Forestry and Other Land Use Mitigation Project Database Agriculture, Forestry and Other Land Use Mitigation Project Database Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Agriculture, Forestry and Other Land Use Mitigation Project Database Agency/Company /Organization: Food and Agriculture Organization of the United Nations Sector: Land Focus Area: Forestry, Agriculture Resource Type: Dataset Website: www.fao.org/climatechange/67148/en/ RelatedTo: Mitigation of Climate Change in Agriculture (MICCA) Project Agriculture, Forestry and Other Land Use Mitigation Project Database Screenshot References: AFOLU Mitigation Database[1] Global Survey of Agricultural Mitigation Projects Paper[2] "The AFOLU MP database endeavors to gather information on all mitigation activities currently ongoing within the agricultural and forestry sectors

375

MODIS Land Products Subsets  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Global Subsetting and Visualization Tool Global Subsetting and Visualization Tool The Global Subsetting and Visualization Tool provides customized subsets of MODIS Land products in ASCII format on demand for any location on Earth. Users select a site (either from a picklist or by entering the site's geographic coordinates) and the area surrounding that site, from one pixel up to 201 x 201 km. The tool is expected to take up to 60 minutes to complete the processing, and the tool will send you an email message containing the URL where you can access the output. The tool provides time series plots of the measurement, an ASCII file of the pixel values for the selected product along with quality information, average and standard deviations for the area selected, and a file that can be imported directly into GIS software. In addition we provide a land cover grid (IGBP classification) of the area, along with an estimate of heterogeneity (Shannon richness and evenness).

376

GCAM 3.0 Agriculture and Land Use: Data Sources and Methods  

SciTech Connect (OSTI)

This report presents the data processing methods used in the GCAM 3.0 agriculture and land use component, starting from all source data used, and detailing all calculations and assumptions made in generating the model inputs. The report starts with a brief introduction to modeling of agriculture and land use in GCAM 3.0, and then provides documentation of the data and methods used for generating the base-year dataset and future scenario parameters assumed in the model input files. Specifically, the report addresses primary commodity production, secondary (animal) commodity production, disposition of commodities, land allocation, land carbon contents, and land values.

Kyle, G. Page; Luckow, Patrick; Calvin, Katherine V.; Emanuel, William R.; Nathan, Mayda; Zhou, Yuyu

2011-12-12T23:59:59.000Z

377

Revisiting Hartle's model using perturbed matching theory to second order: amending the change in mass  

E-Print Network [OSTI]

Hartle's model describes the equilibrium configuration of a rotating isolated compact body in perturbation theory up to second order in General Relativity. The interior of the body is a perfect fluid with a barotropic equation of state, no convective motions and rigid rotation. That interior is matched across its surface to an asymptotically flat vacuum exterior. Perturbations are taken to second order around a static and spherically symmetric background configuration. Apart from the explicit assumptions, the perturbed configuration is constructed upon some implicit premises, in particular the continuity of the functions describing the perturbation in terms of some background radial coordinate. In this work we revisit the model within a modern general and consistent theory of perturbative matchings to second order, which is independent of the coordinates and gauges used to describe the two regions to be joined. We explore the matching conditions up to second order in full. The main particular result we present is that the radial function $m_0$ (in the setting of the original work) of the second order perturbation tensor, contrary to the original assumption, presents a jump at the surface of the star, which is proportional to the value of the energy density of the background configuration there. As a consequence, the change in mass needed by the perturbed configuration to keep the value of the central energy density unchanged must be amended. We also discuss some subtleties that arise when studying the deformation of the star.

Borja Reina; Ral Vera

2014-12-22T23:59:59.000Z

378

Responses of energy use to climate change: A climate modeling study  

SciTech Connect (OSTI)

[1] Using a general-circulation climate model to drive an energy-use model, we projected changes in USA energy-use and in corresponding fossil-fuel CO2 emissions through year 2025 for a low (1.2 XC) and a high (3.4 XC) temperature response to CO2 doubling. The low- T scenario had a cumulative (2003-2025) energy increase of 1.09 quadrillion Btu (quads) for cooling/heating demand. Northeastern states had net energy reductions for cooling/heating over the entire period, but in most other regions energy increases for cooling outweighed energy decreases for heating. The high-?T scenario had significantly increased warming, especially in winter, so decreased heating needs led to a cumulative (2003-2025) heating/cooling energy decrease of 0.82 quads. In both scenarios, CO2 emissions increases from electricity generation outweighed CO2 emissions decreases from reduced heating needs. The results reveal the intricate energy-economy structure that must be considered in projecting consequences of climate warming for energy, economics, and fossil-fuel carbon emissions.

Erickson III, David J [ORNL; Hadley, Stanton W [ORNL; Blasing, T J [ORNL; Hernandez Figueroa, Jose L [ORNL; Broniak, C [Oregon State University

2006-01-01T23:59:59.000Z

379

The Dynamical Core, Physical Parameterizations, and Basic Simulation Characteristics of the Atmospheric Component AM3 of the GFDL Global Coupled Model CM3  

Science Journals Connector (OSTI)

The Geophysical Fluid Dynamics Laboratory (GFDL) has developed a coupled general circulation model (CM3) for the atmosphere, oceans, land, and sea ice. The goal of CM3 is to address emerging issues in climate change, including aerosolcloud ...

Leo J. Donner; Bruce L. Wyman; Richard S. Hemler; Larry W. Horowitz; Yi Ming; Ming Zhao; Jean-Christophe Golaz; Paul Ginoux; S.-J. Lin; M. Daniel Schwarzkopf; John Austin; Ghassan Alaka; William F. Cooke; Thomas L. Delworth; Stuart M. Freidenreich; C. T. Gordon; Stephen M. Griffies; Isaac M. Held; William J. Hurlin; Stephen A. Klein; Thomas R. Knutson; Amy R. Langenhorst; Hyun-Chul Lee; Yanluan Lin; Brian I. Magi; Sergey L. Malyshev; P. C. D. Milly; Vaishali Naik; Mary J. Nath; Robert Pincus; Jeffrey J. Ploshay; V. Ramaswamy; Charles J. Seman; Elena Shevliakova; Joseph J. Sirutis; William F. Stern; Ronald J. Stouffer; R. John Wilson; Michael Winton; Andrew T. Wittenberg; Fanrong Zeng

2011-07-01T23:59:59.000Z

380

MODIS Land Products Subsets  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

methods methods This section describes methods used to generate MODIS Land Subsets for Collection 4 and Collection 5 data products. Methods for Selected Sites (Collections 4 and 5) Methods for North America Tool (Collection 4) Methods for the Global Tool (Collection 5) Methods for Selected Sites (Collection 4 and 5) Source for Selected Site Data: Full MODIS scenes (1200-km x 1200-km) are initially subset to 11-km x 31-km (Collection 4) or 25-km x 25-km (Collection 5) by the MODAPS; these initial subsets contain the field site or flux tower. Reformatting and additional subsetting to 7-km x 7-km containing the field site or flux tower are done by the ORNL DAAC. Tools Used: The ORNL DAAC uses the MODIS Reprojection Tool (MRT) to reformat the MODIS data from HDF-EOS to binary format. A tool developed at ORNL is then used to convert the binary format to ASCII. The MRT is available from the Land Processes DAAC. Whereas the MRT can also be used to reproject data from its native projection to other projections, ORNL chose to forgo the resampling associated with reprojection to minimize data manipulation and distortion. The MOD12Q1 Land Cover Collection 3 data are in I-Sin projection, and the Collection 4 and Collection 5 data are in Sinusoidal projection.

Note: This page contains sample records for the topic "land change modeler" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

Land Stewardship | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Land Stewardship Land Stewardship Land Stewardship Mission The team advocates improved ecosystem health on LM properties in accordance with DOE Order 430.1B, Real Property Asset Management; federal regulations, such as the Endangered Species Act, the Noxious Weed Act, and the Wetlands and Floodplains Act; and in consideration of LM agreements with regulatory agencies and tribes. The team advocates identifying and proposing land management improvements on LM sites that are beneficial to ecosystems and improve remedy sustainability. Improvements are implemented with consideration of adjacent land uses, owners, and political entities. Success is defined when measurable parameters are achieved. Scope The team identifies and evaluates proposals to enhance ecosystem health at

382

land requirements | OpenEI  

Open Energy Info (EERE)

requirements requirements Dataset Summary Description This dataset is part of a larger internal dataset at the National Renewable Energy Laboratory (NREL) that explores various characteristics of large solar electric (both PV and CSP) facilities around the United States. This dataset focuses on the land use characteristics for solar facilities that are either under construction or currently in operation. Source Land-Use Requirements for Solar Power Plants in the United States Date Released June 25th, 2013 (5 months ago) Date Updated Unknown Keywords acres area average concentrating solar power csp Density electric hectares km2 land land requirements land use land-use mean photovoltaic photovoltaics PV solar statistics Data application/vnd.openxmlformats-officedocument.spreadsheetml.sheet icon Master Solar Land Use Spreadsheet (xlsx, 1.5 MiB)

383

land use | OpenEI  

Open Energy Info (EERE)

use use Dataset Summary Description This dataset is part of a larger internal dataset at the National Renewable Energy Laboratory (NREL) that explores various characteristics of large solar electric (both PV and CSP) facilities around the United States. This dataset focuses on the land use characteristics for solar facilities that are either under construction or currently in operation. Source Land-Use Requirements for Solar Power Plants in the United States Date Released June 25th, 2013 (5 months ago) Date Updated Unknown Keywords acres area average concentrating solar power csp Density electric hectares km2 land land requirements land use land-use mean photovoltaic photovoltaics PV solar statistics Data application/vnd.openxmlformats-officedocument.spreadsheetml.sheet icon Master Solar Land Use Spreadsheet (xlsx, 1.5 MiB)

384

Ecosystem feedbacks to climate change in California: Development, testing, and analysis using a coupled regional atmosphere and land-surface model (WRF3-CLM3.5)  

E-Print Network [OSTI]

at the expense of conifer forest and alpine/subalpine forestat the expense of conifer forest and alpine/subalpine forestcover (e.g. , mixed conifer forest) as combinations of

Subin, Z.M.

2012-01-01T23:59:59.000Z

385

ENVIRONMENTAL COMPLIANCE SERVICES CENTER FOR ENVIRONMENTAL MANAGEMENT OF MILITARY LANDS  

E-Print Network [OSTI]

· Environmental Database Development and Management · Storm Water Modeling #12;ENVIRONMENTAL COMPLIANCE SERVICES CENTER FOR ENVIRONMENTAL MANAGEMENT OF MILITARY LANDS CEMML of environmental managers. The Center provides assistance to environmental managers in compliance areas such as air

386

FTT:Power : A global model of the power sector with induced technological change and natural resource depletion  

E-Print Network [OSTI]

This work introduces a model of Future Technology Transformations for the power sector (FTT:Power), a representation of global power systems based on market competition, induced technological change (ITC) and natural resource use and depletion. It is the first component of a family of sectoral bottom-up models of technology, designed for integration into the global macroeconometric model E3MG. ITC occurs as a result of technological learning produced by cumulative investment and leads to highly nonlinear, irreversible and path dependent technological transitions. The model uses a dynamic coupled set of logistic differential equations. As opposed to traditional bottom-up energy models based on systems optimisation, such differential equations offer an appropriate treatment of the times and structure of change involved in sectoral technology transformations, as well as a much reduced computational load. Resource use and depletion are represented by local cost-supply curves, which give rise to different regional...

Mercure, J -F

2012-01-01T23:59:59.000Z

387

Meanings, Measures, Maps, and Models: Understanding the Mechanisms of Continuous Change  

E-Print Network [OSTI]

There is now considerable controversy concerning the role that incremental change plays in the process of organizational transformation. Some scholars assert that incremental change is the primary source of resistance to ...

Repenning, Nelson

388

Coastal communities and climate change : a dynamic model of risk perception, storms, and adaptation  

E-Print Network [OSTI]

Climate change impacts, including sea-level rise and changes in tropical storm frequency and intensity, will pose signicant challenges to city planners and coastal zone managers trying to make wise investment and protection ...

Franck, Travis Read

2009-01-01T23:59:59.000Z

389

A georeferenced Agent-Based Model to analyze the climate change impacts on the Andorra winter tourism  

E-Print Network [OSTI]

This study presents a georeferenced agent-based model to analyze the climate change impacts on the ski industry in Andorra and the effect of snowmaking as future adaptation strategy. The present study is the first attempt to analyze the ski industry in the Pyrenees region and will contribute to a better understanding of the vulnerability of Andorran ski resorts and the suitability of snowmaking as potential adaptation strategy to climate change. The resulting model can be used as a planning support tool to help local stakeholders understand the vulnerability and potential impacts of climate change. This model can be used in the decision-making process of designing and developing appropriate sustainable adaptation strategies to future climate variability.

Pons-Pons, M; Rosas-Casals, M; Sureda, B; Jover, E

2011-01-01T23:59:59.000Z

390

Climate Change and Extinctions  

E-Print Network [OSTI]

Lectures presents: Climate Change and Extinctions Happening2013. He will present a climate change extinction model that

Sinervo, Barry

2013-01-01T23:59:59.000Z

391

Absentee Landowners Near a Military Installation in Texas: Use, Motivation, and Emotional Tie to their Land  

E-Print Network [OSTI]

.......................................................... 97 Family land. ........................................................................................................................... 98 Leasing land.... ......................................................................................................................... 117 Leasing land. ....................................................................................................................... 118 Hunting on land...

Dankert, Amber 1980-

2012-12-20T23:59:59.000Z

392

Evaluating land application effects  

SciTech Connect (OSTI)

The Philadelphia, PA Water Department embarked on a land application program of its treated wastewater sludge in 1977. Initially, liquid sludge averaging from 1-5% solids was applied to approximately 400 acres of corn, soybeans, and sod at rates sufficient to supply crop nitrogen needs. During the 1978 through 1984 growing seasons, crops and soils were monitored for heavy metals (bioavailability of cadmium, copper, nickel, chromium, lead and zinc) and in 1984 for PCB accumulation. This report summarizes results of the monitoring program until 1984.

Sarkis, K. (Philadelphia Water Department, PA (USA))

1987-01-01T23:59:59.000Z

393

Land conversion in Amazonia and Northern South America : influences on regional hydrology and ecosystem response  

E-Print Network [OSTI]

A numerical model of the terrestrial biosphere (Ecosystem Demography Model) is compbined with an atmospheric model (Brazilian Regional Atmospheric Modeling System) to investigate how land conversion in the Amazon and ...

Knox, Ryan Gary

2013-01-01T23:59:59.000Z

394

MODIS Land Products Subsets  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Geography of the MODIS Land Subsets for selected Field Sites Geography of the MODIS Land Subsets for selected Field Sites The 7- x 7-km grid containing the field or tower site is provided to enable comparison of pixel values of MODIS products with field data collected at a site. The values are intended to be examined over time either as a collection of individual values or combined (e.g., the average and range) within a 3- x 3-km grid or a 5- x 5-km grid around the site. Examples of analyses using the ASCII subset data can be found in presentations. If users would like to examine the MODIS data spatially in a map, we suggest that they obtain the GeoTIFF subsets or MODIS products from the LP DAAC. Please note that the grid and pixel sizes are not exact multiples of 1 km, but are only approximations. For instance, the grid and pixel size for the 1 km Sinusoidal grid is approximately 926 m. For additional information, please view the MODIS Web site.

395

Volatility clustering in land markets  

E-Print Network [OSTI]

analysis. Applying a Lagrange Multiplier (LM) test for AutoRegressive Conditional Heteroskedasticity (ARCH) effects in the Canadian land markets, we find that clustering in land price returns exists in Alberta, Ontario, Quebec, and British Columbia... by even higher volatility and vice versa. III. Data and Descriptive Statistics The monthly land price index for each individual province is obtained from Statistics Canada, covering all of the Canadian provinces (Alberta, Ontario, Quebec...

Bao, Helen X. H.; Huang, Hui; Huang, Yu-Lieh; Lin, Pin-te

2014-01-01T23:59:59.000Z

396

Superscaling and Charge-Changing Neutrino Scattering from Nuclei in the $\\boldsymbol ?$-Region beyond the Relativistic Fermi Gas Model  

E-Print Network [OSTI]

The superscaling analysis using the scaling function obtained within the coherent density fluctuation model is extended to calculate charge-changing neutrino and antineutrino scattering on $^{12}$C at energies from 1 to 2 GeV not only in the quasielastic but also in the delta excitation region. The results are compared with those obtained using the scaling functions from the relativistic Fermi gas model and from the superscaling analysis of inclusive scattering of electrons from nuclei.

M. V. Ivanov; M. B. Barbaro; J. A. Caballero; A. N. Antonov; E. Moya de Guerra; M. K. Gaidarov

2008-02-29T23:59:59.000Z

397

Land Energy | Open Energy Information  

Open Energy Info (EERE)

on harnessing biomass. Activities include wood-pellet production, biomass-combined heat and power and forestry and energy-crop development. References: Land Energy1 This...

398

An animal model for genetic/evolutionary responses to global climate change. Final report  

SciTech Connect (OSTI)

A multi-level attack was made on a molecular-genetics-based vulnerability of thermally sensitive organisms to global climate change.

Ward B. Watt

1998-02-28T23:59:59.000Z

399

Changing the Climate Sensitivity of an Atmospheric General Circulation Model through Cloud Radiative Adjustment  

E-Print Network [OSTI]

Conducting probabilistic climate projections with a particular climate model requires the ability to vary the models characteristics, such as its climate sensitivity. In this study, the authors implement and validate a ...

Sokolov, Andrei P.

400

Verification and Validation of EnergyPlus Conduction Finite Difference and Phase Change Material Models for Opaque Wall Assemblies  

SciTech Connect (OSTI)

Phase change materials (PCMs) represent a potential technology to reduce peak loads and HVAC energy consumption in buildings. There are few building energy simulation programs that have the capability to simulate PCM but their accuracy has not been completely tested. This report summarizes NREL efforts to develop diagnostic tests cases to obtain accurate energy simulations when PCMs are modeled in residential buildings.

Tabares-Velasco, P. C.; Christensen, C.; Bianchi, M.; Booten, C.

2012-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "land change modeler" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

Wind assessment in complex terrain with the numeric model Aiolos implementation of the influence of roughness changes and stability  

E-Print Network [OSTI]

Wind assessment in complex terrain with the numeric model Aiolos ­ implementation of the influence of roughness changes and stability Ulrich Focken, Detlef Heinemann, Hans-Peter Waldl Department of Energy (EWA) gives good results for the wind potential estimation in flat areas. But besides many

Heinemann, Detlev

402

Each and Every Student: The Stamford, Connecticut Model for Change in Mathematics Mona Hanna, MS, Director for Mathematics and Science  

E-Print Network [OSTI]

227 Each and Every Student: The Stamford, Connecticut Model for Change in Mathematics Mona Hanna Mathematics Coordinator cchiappetta@ci.stamford.ct.us Stamford Public Schools Stamford, Connecticut, USA achievement will improve. Background The state of Connecticut has standardized test for elementary, middle

Spagnolo, Filippo

403

Peatland carbon cycle responses to hydrological change at time scales from years to centuries: Impacts on model  

E-Print Network [OSTI]

Peatland carbon cycle responses to hydrological change at time scales from years to centuries: Impacts on model simulations and regional carbon budgets By Benjamin N. Sulman A dissertation submitted to the long-term storage of carbon in peat, these ecosystems contain a significant fraction of the global

Wisconsin at Madison, University of

404

legal_land_01  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

DIVISION DIRECTOR EXECUTIVE SECRETARY L. DEVITO ASSISTANT DIVISION DIRECTOR J. HLAVACIK ESH COORDINATOR E. CHANG E. BENDA M. BOSEK (B. BRAJUSKOVIC) D. CAPATINA J. CARTER L....

405

MODIS Land Products Subsets  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

MODIS ASCII Subset Products - FTP Access MODIS ASCII Subset Products - FTP Access All of the MODIS ASCII Subsets are available from the ORNL DAAC's ftp site. The directory structure of the ftp site is based on the abbreviated names for the MODIS Products. Terra MODIS products are abbreviated "MOD", Aqua MODIS products are abbreviated "MYD" and combined Terra and Aqua MODIS products are abbreviated "MCD". The abbreviated names also include the version number (also known as collection). For specific products, please refer to the following table: Product Acronym Spatial Resolution Temporal Frequency Terra V005 SIN Aqua V005 SIN Terra/Aqua Combined V005 SIN Surface Reflectance SREF 500 m 8 day composites MOD09A1 MYD09A1 ---------- Land Surface Temperature and Emissivity TEMP 1 km 8 day composites MOD11A2 MYD11A2 ----------

406

Wetland model in an earth systems modeling framework for regional environmental policy analysis  

E-Print Network [OSTI]

The objective of this research is to investigate incorporating a wetland component into a land energy and water fluxes model, the Community Land Model (CLM). CLM is the land fluxes component of the Integrated Global Systems ...

Awadalla, Sirein Salah

2011-01-01T23:59:59.000Z

407

Land Record System PIA, Bonneville Power Administration | Department...  

Broader source: Energy.gov (indexed) [DOE]

Land Record System PIA, Bonneville Power Administration Land Record System PIA, Bonneville Power Administration Land Record System PIA, Bonneville Power Administration Land Record...

408

Multipole-specific, model-independent, velocity-change spectra of collisionally perturbed P13-state Yb174 atoms  

Science Journals Connector (OSTI)

Coherent transient (echo) techniques have been employed in a high-precision study of collisional velocity thermalization in a sample of (6s6p)P13, excited-state, Yb174 atoms perturbed by He or Ar. This work probes the comparative response of aligned and oriented atoms to both depolarizing and to weak, nondepolarizing and/or velocity-changing collisions. By direct inversion of our time-domain echo relaxation data, we also provide a model-independent determination of velocity-change spectra (collision kernels) for nondepolarizing collisions.

A. G. Yodh; T. W. Mossberg; J. E. Thomas

1986-12-01T23:59:59.000Z

409

Transient climate changes in a perturbed parameter ensemble of emissions-driven earth system model simulations  

Science Journals Connector (OSTI)

We describe results from a 57-member ensemble of transient climate change simulations, featuring simultaneous perturbations to 54 parameters in the atmosphere, ocean, sulphur cycle and terrestrial ecosystem compo...

James M. Murphy; Ben B. B. Booth; Chris A. Boulton; Robin T. Clark

2014-11-01T23:59:59.000Z

410

Modelling the economic and social consequences of drought under future projections of climate change  

E-Print Network [OSTI]

, China, Ethiopia, India, Spain/Portugal and the USA. Future projections of drought magnitude for 2003-2050 were modelled using the integrated assessment model CIAS (Community Integrated Assessment System), for a range of climate and emission scenarios...

Jenkins, Katie L.

2012-01-10T23:59:59.000Z

411

The influence of deer hunting leases on land values in Brazos County, Texas  

E-Print Network [OSTI]

landowners have changed from season leasing to day leasing. In conjunction with the increasing interest in deer hunting, there has been a simultaneous increase in the sale value of agricult, ur- al land. This speculative correlation justifies a detailed... leasing activities are capitalized into agricultural land values. 2. To estimate the portion of the sale value of agricultural land attributable to deer hunting leases and compare this value with the capitalized value of deer hunting leases...

Andrews, Francis Boyd

1965-01-01T23:59:59.000Z

412

A Web-Based Decision Support System for Evaluation of Benefits of Land Consolidation in China  

Science Journals Connector (OSTI)

This paper describes a Web-based decision support system named WBDSS for the benefits evaluation of land consolidation for local authority. Cost-Benefits Analysis (CBA) model, Net Present Value (NPV) model, Comprehensive Fuzzy Evaluation (CFE) model ...

Yingmin Cai; Yong Zeng; Daoliang Li

2006-11-01T23:59:59.000Z

413

GRR/Section 3-TX-f - Lease of Land Trade Lands | Open Energy Information  

Open Energy Info (EERE)

GRR/Section 3-TX-f - Lease of Land Trade Lands GRR/Section 3-TX-f - Lease of Land Trade Lands < GRR Jump to: navigation, search GRR-logo.png GEOTHERMAL REGULATORY ROADMAP Roadmap Home Roadmap Help List of Sections Section 3-TX-f - Lease of Land Trade Lands 03-TX-f - Lease of Land Trade Lands.pdf Click to View Fullscreen Triggers None specified Click "Edit With Form" above to add content 03-TX-f - Lease of Land Trade Lands.pdf Error creating thumbnail: Page number not in range. Error creating thumbnail: Page number not in range. Error creating thumbnail: Page number not in range. Flowchart Narrative This flowchart illustrates the process of leasing Land Trade Lands in Texas. The Texas General Land Office (GLO) administers leases on Land Trade Lands through Title 31 of the Texas Administrative Code Section 155.42.

414

Land application of sludge  

SciTech Connect (OSTI)

This book is the proceedings of a workshop held in Las Vegas, NV in 1985 entitled Effects of Sewage Sludge Quality and Soil Properties on Plant Uptake of Sludge-Applied Trace Constituents. The workshop was in response to the need to utilize the most current available information in the development of regulations and criteria to safely apply and manage the land application of municipal sewage sludge. The participants were undoubtedly the most knowledgeable of this subject matter, and were divided into five separate but related task groups. The groups addressed the following sludge-related topics: (1) role of soil properties on accumulation of trace element by crops; (2) role of sludge properties on accumulation of trace elements by crops; (3) influence of long-term application on accumulation of trace elements by crops; (4) transfer of trace elements to the food chain, and (5) effects of trace organics in agroecosystems and their risk assessment to humans. The text, therefore, parallels those of the results of the task groups. The five main chapters followed a similar format, i.e., having an introduction section, a comprehensive literature review, discussion of recent and current data, and synthesis of the most relevant information.

Page, A.L.; Logan, T.J.; Ryan, J.A. (eds.)

1987-01-01T23:59:59.000Z

415

UC land grants: A photo history  

E-Print Network [OSTI]

Berkeley UC land grants: A photo history D Early days: 1862UCR/CMP UC land grants: A photo history H. In 1987, UC

Editors, By

2012-01-01T23:59:59.000Z

416

State Land Commission FAQ | Open Energy Information  

Open Energy Info (EERE)

Commission FAQ Jump to: navigation, search OpenEI Reference LibraryAdd to library Web Site: State Land Commission FAQ Abstract Frequently Asked Questions, California State Land...

417

Regression Model Predicting Appraised Unit Value of Land in San Francisco County from Number of and Distance to Public Transit Stops using GIS  

E-Print Network [OSTI]

The objective of this study is to develop a quantifying model that predicts the appraised unit value of parcels in San Francisco County based on number of LEED-NC Public Transportation Access (PTA) qualified bus, light rail and commuter rail stops...

Son, Kiyoung

2012-07-16T23:59:59.000Z

418

Uncertainty in Climate Modelling; Projected climate changes and low flow discharge in Elverdams .  

E-Print Network [OSTI]

??This project uses the Danish stream Elversdam as a case study to analyse uncertainty in climate modelling, with particular focus on the low flow (more)

Dam, Peter Rosendahl

2014-01-01T23:59:59.000Z

419

Essays on empirical time series modeling with causality and structural change  

E-Print Network [OSTI]

change in the volatility of five Asian and U.S. stock markets is examined during the post-liberalization period (1990-2005) in the Asian financial markets, using the Sup LM test. Four Asian financial markets (Hong Kong, Japan, Korea, and Singapore...

Kim, Jin Woong

2006-10-30T23:59:59.000Z

420

Smart sensor/actuator node reprogramming in changing environments using a neural network model  

Science Journals Connector (OSTI)

The techniques currently developed for updating software in sensor nodes located in changing environments require usually the use of reprogramming procedures, which clearly increments the costs in terms of time and energy consumption. This work presents ... Keywords: Arduino, Constructive Neural Networks, Microcontroller

Francisco Ortega-Zamorano, Jos M. Jerez, Jos L. Subirats, Ignacio Molina, Leonardo Franco

2014-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "land change modeler" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

solar land use | OpenEI Community  

Open Energy Info (EERE)

solar land use solar land use Home Rosborne318's picture Submitted by Rosborne318(5) Member 2 December, 2013 - 11:06 Request for Information Renewable Energy Generation/Production Shreveport Airport Authority - Response Deadline 2 January 2014 pv land use Solar solar land use Solar Power The Shreveport Airport Authority intends to issue a Request for Proposal (RFP) at some future time for renewable energy generation opportunities on Shreveport Airport property. Files: application/pdf icon solar_rfi_complete.pdf Sfomail's picture Submitted by Sfomail(48) Member 25 June, 2013 - 12:10 Solar Land Use Data on OpenEI acres csp land use how much land land requirements pv land use solar land use square miles I'm happy to announce that a new report on Solar+Land+Use was just released by the National+Renewable+Energy+Laboratory. You can find a brief summary

422

pv land use | OpenEI Community  

Open Energy Info (EERE)

pv land use pv land use Home Rosborne318's picture Submitted by Rosborne318(5) Member 2 December, 2013 - 11:06 Request for Information Renewable Energy Generation/Production Shreveport Airport Authority - Response Deadline 2 January 2014 pv land use Solar solar land use Solar Power The Shreveport Airport Authority intends to issue a Request for Proposal (RFP) at some future time for renewable energy generation opportunities on Shreveport Airport property. Files: application/pdf icon solar_rfi_complete.pdf Sfomail's picture Submitted by Sfomail(48) Member 25 June, 2013 - 12:10 Solar Land Use Data on OpenEI acres csp land use how much land land requirements pv land use solar land use square miles I'm happy to announce that a new report on Solar+Land+Use was just released by the National+Renewable+Energy+Laboratory. You can find a brief summary

423

LIKELIHOOD RATIO TESTS FOR THE STRUCTURAL CHANGE OF AN AR(P) MODEL TO A THRESHOLD  

E-Print Network [OSTI]

or econo- metric model is stable to some possible events, such as the great depres- sion/expansion, oil price shocks and abrupt policy intervention. Due to the well need for model stability, a lot) and Quandt (1960). For the history and more early results, we refer to Horv´ath (1993, 1995) and Cs

Ling, Shiqing

424

PNNL: Atmospheric Sciences & Global Change - Fundamental & Computational  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Science and Global Change Science and Global Change Our researchers are transforming the nation's ability to predict climate change and its impacts. PNNL's research is expanding knowledge of fundamental atmospheric processes, developing state-of-the-art modeling capabilities, and improving understanding of how climate, energy, water, and land systems interact. Working across disciplines, we integrate theory, measurements, and modeling at molecular to global scales. Read more... aerial irrigation green circles Plugging Water's Effects in an Earth System Model In two studies led by Pacific Northwest National Laboratory, researchers simulated how irrigation from both surface water and groundwater affects the Earth's water and energy budget. The two studies highlight the challenges for Earth system models to include a more complete

425

Modelling the impacts of projected future climate change on water resources in north-west England Hydrol. Earth Syst. Sci., 11(3), 11151126, 2007  

E-Print Network [OSTI]

Modelling the impacts of projected future climate change on water resources in north-west England of projected future climate change on water resources in north-west England H.J. Fowler1 , C.G. Kilsby1 and J (Fowler and Kilsby, 2002) and future projections from Global Climate Models (GCMs) suggest that winters

Paris-Sud XI, Université de

426

Regional climate model data used within the SWURVE project 1:projected changes in seasonal patterns and estimation of PET Hydrol. Earth Syst. Sci., 11(3), 10691083, 2007  

E-Print Network [OSTI]

Regional climate model data used within the SWURVE project 1:projected changes in seasonal patterns) project, assessing the risk posed by future climatic change to various hydrological and hydraulic systems/1069/2007 © Author(s) 2007. This work is licensed under a Creative Commons License. Regional climate model data used

Paris-Sud XI, Université de

427

A spatial agent-based model for assessing strategies of adaptation to climate and tourism demand changes in an alpine tourism destination  

Science Journals Connector (OSTI)

A vast body of literature suggests that the European Alpine Region is amongst the most sensitive socio-ecosystems to climate change impacts. Our model represents the winter tourism socio-ecosystem of Auronzo di Cadore, located in the Dolomites (Italy), ... Keywords: Adaptation strategies, Alpine tourism, Climate change, Social simulation, Spatial agent-based model

Stefano Balbi; Carlo Giupponi; Pascal Perez; Marco Alberti

2013-07-01T23:59:59.000Z

428

Uni Land | Open Energy Information  

Open Energy Info (EERE)

Land Land Jump to: navigation, search Name Uni Land Place Bologna, Italy Zip 40063 Sector Solar Product Italian property company, which buys land without permits and develops it for residential and commerical use before selling it on. The firm is involved with solar project development. Coordinates 44.50483°, 11.345169° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":44.50483,"lon":11.345169,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

429

Energy Corridors on Federal Lands  

Broader source: Energy.gov [DOE]

To improve energy delivery and enhance the electric transmission grid for the future, several government agencies currently are working together to establish a coordinated network of Federal energy corridors on Federal lands throughout the United States.

430

Land and Facility Use Planning  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

The Land and Facility Use Planning process provides a way to guide future site development and reuse based on the shared long-term goals and objectives of the Department, site and its stakeholders. Does not cancel other directives.

1996-07-09T23:59:59.000Z

431

The Foreseer Tool - Analysing Energy, Land and Water Resource Futures  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

The Foreseer Tool - Analysing Energy, Land and Water Resource Futures The Foreseer Tool - Analysing Energy, Land and Water Resource Futures through Sankey Diagrams Speaker(s): Bojana Bajzelj Grant Kopec Julian Allwood Liz Curmi Date: November 10, 2011 - 1:30pm Location: 90-3122 Seminar Host/Point of Contact: Anita Estner Larry Dale The BP funded Foreseer project at the University of Cambridge is creating a tool to visualise the influence of future demand and policy choices on the coupled physical requirements for energy, water and land resources in a region of interest. The basis of the tool is a set of linked physical descriptions of energy, water and land, plus the technologies that transform those resources into final services - e.g. housing, food, transport and goods. The tool has a modular structure, with the potential to incorporate specialised analyses or models to calculate future demand,

432

Biofuel, land and water: maize, switchgrass or Miscanthus?  

Science Journals Connector (OSTI)

The productive cellulosic crops switchgrass and Miscanthus are considered as viable biofuel sources. To meet the 2022 national biofuel target mandate, actions must be taken, e.g., maize cultivation must be intensified and expanded, and other biofuel crops (switchgrass and Miscanthus) must be cultivated. This raises questions on the use efficiencies of land and water; to date, the demand on these resources to meet the national biofuel target has rarely been analyzed. Here, we present a data-model assimilation analysis, assuming that maize, switchgrass and Miscanthus will be grown on currently available croplands in the US. Model simulations suggest that maize can produce 3.05.4kiloliters (kl) of ethanol for every hectare of land, depending on the feedstock to ethanol conversion efficiency; Miscanthus has more than twice the biofuel production capacity relative to maize, and switchgrass is the least productive of the three potential sources of ethanol. To meet the biofuel target, about 26.5 million hectares of land and over 90km3 of water (of evapotranspiration) are needed if maize grain alone is used. If Miscanthus was substituted for maize, the process would save half of the land and one third of the water. With more advanced biofuel conversion technology for Miscanthus, only nine million hectares of land and 45km3 of water would probably meet the national target. Miscanthus could be a good alternative biofuel crop to maize due to its significantly lower demand for land and water on a per unit of ethanol basis.

Qianlai Zhuang; Zhangcai Qin; Min Chen

2013-01-01T23:59:59.000Z

433

Global Observation of Forest and Land Cover Dynamics (GOFC-GOLD) | Open  

Open Energy Info (EERE)

of Forest and Land Cover Dynamics (GOFC-GOLD) of Forest and Land Cover Dynamics (GOFC-GOLD) Jump to: navigation, search Name Global Observation of Forest and Land Cover Dynamics (GOFC-GOLD) Agency/Company /Organization World Meteorological Organization, United Nations Educational Scientific and Cultural Organization, United Nations Environment Programme, International Council for Science, Food and Agriculture Organization of the United Nations Sector Land, Climate Focus Area Biomass, Forestry, Agriculture Topics GHG inventory Resource Type Software/modeling tools Website http://www.fao.org/gtos/gofc-g References Global Observation of Forest and Land Cover Dynamics (GOFC-GOLD)[1] Global Observation of Forest and Land Cover Dynamics (GOFC-GOLD) Screenshot "Global Observation of Forest and Land Cover Dynamics (GOFC-GOLD) is a

434

Competition for land  

Science Journals Connector (OSTI)

...Changes in the demand on the one side and profitability...activities on the other side are the major determinants...food supply, food demand and food security...semi-natural forest management practices. Another...production and grassland demand. Consequently...

2010-01-01T23:59:59.000Z

435

Competition for land  

Science Journals Connector (OSTI)

...only in 2030 biofuels-biodiesel BIOF3 = 15% share of...of first-generation biodiesel only in 2030 biofuels-first...generation (mix of biodiesel and bioethanol) only...cover change: local processes, global impacts. Global...agriculture since 1960: an evaluation of current indicators...

2010-01-01T23:59:59.000Z

436

The Need for Open Lands  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Need for Open Lands Need for Open Lands Nature Bulletin No. 742 February 8, 1964 Forest Preserve District of Cook County Seymour .Simon, President Roberts Mann, Conservation Editor THE NEED FOR OPEN LANDS There is an old saying: The proof of the pudding is the eating . In other words, if it's good, people enjoy it and beg for more. The proof of the need for open lands -- publicly owned areas for recreational uses and open spaces undisturbed -- is the tremendous and ever-increasing use of those we have. We need more now. Year after year we will need more and more. It is imperative that areas desirable for future use be acquired now or as soon as possible, regardless of cost and even though they may stand idle ' -- vacant and undeveloped -- until more funds become available. Otherwise they may be gone, or the asking price may be a hundred times greater. Open spaces such as farm lands and prairies may have been occupied by residential, commercial or industrial developments. Woodlands may have been cut, stream channels dredged and wetlands drained, destroying all but a memory of their beauty and recreational values. There are compelling reasons for our need of open lands and why we should waste no time in providing more. Those reasons have been confirmed and emphasized by exhaustive studies and statistical analyses nationwide in scope.

437

Evaluating the Use of Ocean Models of Different Complexity in Climate Change Studies  

E-Print Network [OSTI]

The study of the uncertainties in future climate projections requires large ensembles of simulations with different values of model characteristics that define its response to external forcing. These characteristic include ...

Sokolov, Andrei P.

438

Advanced Technologies in Energy-Economy Models for Climate Change Assessment  

E-Print Network [OSTI]

Considerations regarding the roles of advanced technologies are crucial in energy-economic modeling, as these technologies, while usually not yet commercially viable, could substitute for fossil energy when relevant policies ...

Morris, J.F.

439

Climate Change Impact Valuation Models Revisited | U.S. DOE Office...  

Office of Science (SC) Website

assessment models. Print Text Size: A A A Subscribe FeedbackShare Page Click to enlarge photo. Enlarge Photo Image courtesy of Master Sgt. Mark C. Olsen, U.S. Air Force Predicting...

440

Modeling Changes in Connectivity at U.S. Airports: A Small Community Perspective  

E-Print Network [OSTI]

There currently exists no industry-standard model for measuring an airport's level of connectivity to the global air transportation network. This discussion paper introduces the Airport Connectivity Quality Index (ACQI)--a ...

Wittman, Michael D.

2013-06-11T23:59:59.000Z

Note: This page contains sample records for the topic "land change modeler" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

Deep Convective Transition Characteristics in the Community Climate System Model and Changes under Global Warming  

Science Journals Connector (OSTI)

Tropical deep convective transition characteristics, including precipitation pickup, occurrence probability, and distribution tails related to extreme events, are analyzed using uncoupled and coupled versions of the Community Climate System Model (...

Sandeep Sahany; J. David Neelin; Katrina Hales; Richard B. Neale

2014-12-01T23:59:59.000Z

442

Quantifying Uncertainty for Climate Change and Long-Range Forecasting Scenarios with Model Errors. Part I: Gaussian Models  

E-Print Network [OSTI]

of a turbulent tracer with a mean gradient with the background turbulent field velocity generated by the first. An important feature of all the current computer Atmosphere Ocean Science (AOS) models (Neelin et al. 2006 or the limitations of computing power with the necessary parameterization of subgrid processes. Examples of important

Majda, Andrew J.

443

Manuscript prepared for Geosci. Model Dev. with version 3.0 of the LATEX class copernicus.cls.  

E-Print Network [OSTI]

an interactive sea-ice and land component. SPEEDO is a global earth system model of intermediate complexity and predicting future changes. Global state-of-the-art earth system models are computationally expensive which. For these scientific purposes computationally efficient earth system models of intermediate complexity (EMICs) have

Haak, Hein

444

Mahima Neupane Access to land resources  

E-Print Network [OSTI]

information followed the sustainable livelihood #12;Mahima Neupane Access to land resources framework (SLF

Richner, Heinz

445

Analytical modeling of gravity changes and crustal deformation at volcanoes: The Long Valley caldera, California, case study  

Science Journals Connector (OSTI)

Joint measurements of ground deformation and micro-gravity changes are an indispensable component for any volcano monitoring strategy. A number of analytical mathematical models are available in the literature that can be used to fit geodetic data and infer source location, depth and density. Bootstrap statistical methods allow estimations of the range of the inferred parameters. Although analytical models often assume that the crust is elastic, homogenous and isotropic, they can take into account different source geometries, the influence of topography, and gravity background noise. The careful use of analytical models, together with high quality data sets, can produce valuable insights into the nature of the deformation/gravity source. Here we present a review of various modeling methods, and use the historical unrest at Long Valley caldera (California) from 1982 to 1999 to illustrate the practical application of analytical modeling and bootstrap to constrain the source of unrest. A key question is whether the unrest at Long Valley since the late 1970s can be explained without calling upon an intrusion of magma. The answer, apparently, is no. Our modeling indicates that the inflation source is a slightly tilted prolate ellipsoid (dip angle between 91 and 105) at a depth of 6.5 to 7.9km beneath the caldera resurgent dome with an aspect ratio between 0.44 and 0.60, a volume change from 0.161 to 0.173km3 and a density of 1241 to 2093kg/m3. The larger uncertainty of the density estimate reflects the higher noise of gravity measurements. These results are consistent with the intrusion of silicic magma with a significant amount of volatiles beneath the caldera resurgent dome.

M. Battaglia; D.P. Hill

2009-01-01T23:59:59.000Z

446

An Act to Reform Land Use Planning in the Unorganized Territory (Maine) |  

Broader source: Energy.gov (indexed) [DOE]

An Act to Reform Land Use Planning in the Unorganized Territory An Act to Reform Land Use Planning in the Unorganized Territory (Maine) An Act to Reform Land Use Planning in the Unorganized Territory (Maine) < Back Eligibility Agricultural Commercial Investor-Owned Utility Local Government Municipal/Public Utility Nonprofit Rural Electric Cooperative Schools Tribal Government Utility Savings Category Wind Buying & Making Electricity Program Info State Maine Program Type Siting and Permitting Provider Conservation An Act to Reform Land Use Planning in the Unorganized Territory alters the makeup and responsibilities of Maine's Land Use Regulation Commission (LURC). It took effect on August 29, 2012 and changed the Commission's name to the Land Use Planning Commission. Under the Act, permitting review for significant projects, such as

447

A land use decision methodology for mine lands in Appalachia. Final report  

SciTech Connect (OSTI)

This report summarizes the issues associated with the development of methodology for determining appropriate land uses for mined lands in Appalachia. The methodology which has been developed presents a framework which is useful for examining land use options for previously mined land, currently active mine sites and unmined land which has a high value or likelihood for future mining.

Yuill, C.; Gorton, W.T.; Frakes, M.

1981-05-01T23:59:59.000Z

448

Modeling Climate Change Policies in Canada and the U.S.: An Update  

E-Print Network [OSTI]

In a report to the IETC in 2007, we described the set of CIMS models that would be used to simulate different climate policies in both the United States and Canada. This report will describe the various policies simulated in the two countries...

Roop, J. M.; Tubbs, W. J.

449

Original article A mathematical model to describe the change in moisture  

E-Print Network [OSTI]

for 200­300 s. During hydrothermal treatment of starchy foods, some physical and chemical processes take starch during hydrothermal treatment Ikbal Zarguili,1 Zoulikha Maache-Rezzoug,1 * Catherine Loisel2 on gravimetric data. The model proposes an exponential variation in the moisture content with processing time

Boyer, Edmond

450

A COMPUTATIONAL MODEL OF COUPLED HEAT AND MOISTURE TRANSFER WITH PHASE CHANGE  

E-Print Network [OSTI]

, The University of Greenwich, London, UK Mark C. Leaper Formerly The Wolfson Centre for Bulk Solids Handling Technology, The University of Greenwich, London, UK As part of a comprehensive effort to predict=cycling. The resulting model partial differential equations were solved using finite-volume procedures in the context

Christakis, Nikolaos

451

USE OF GENERAL CIRCULATION MODEL OUTPUT IN THE CREATION OF CLIMATE CHANGE SCENARIOS  

E-Print Network [OSTI]

, Sub-Saharan Africa and Venezuela, for use in biological effects models. By combining the general of Energy (MacCracken and Luther, 1985a, b; NRC, 1985; Trabalka, 1985; Strain and Cure, 1985; White, 1985, and possible solar variations, and all agree that surface air temperatures will rise, pre- cipitation patterns

Robock, Alan

452

Trade-offs of different land and bioenergy policies on the path to achieving climate targets  

Science Journals Connector (OSTI)

Many papers have shown that bioenergy and land-use are potentially important elements ... anthropogenic climate change. But, significant expansion of bioenergy production can have a large terrestrial footprint. ....

Katherine Calvin; Marshall Wise; Page Kyle; Pralit Patel; Leon Clarke

2014-04-01T23:59:59.000Z

453

Welcome to the University of Minnesota Land and Atmospheric Science Graduate Program!  

E-Print Network [OSTI]

of land use change and Best Management Practices (agriculture, urbanization) on air or water quality practices and precision agriculture on crop yield and environmental quality. While research or coursework student ratio. Environmental Science topics constitute the majority of research conducted

Minnesota, University of

454

Exploration and Modeling of Structural changes in Waste Glass Under Corrosion  

SciTech Connect (OSTI)

Vitrification is currently the world-wide treatment of choice for the disposition of high-level nuclear wastes. In glasses, radionuclides are atomistically bonded into the solid, resulting in a highly durable product, with borosilicate glasses exhibiting particularly excellent durability in water. Considering that waste glass is designed to retain the radionuclides within the waste form for long periods, it is important to understand the long-term stability of these materials when they react in the environment, especially in the presence of water. Based on a number of previous studies, there is general consensus regarding the mechanisms controlling the initial rate of nuclear waste glass dissolution. Agreement regarding the cause of the observed decrease in dissolution rate at extended times, however, has been elusive. Two general models have been proposed to explain this behavior, and it has been concluded that both concepts are valid and must be taken into account when considering the decrease in dissolution rate. Furthermore, other processes such as water diffusion, ion exchange, and precipitation of mineral phases onto the glass surface may occur in parallel with dissolution of the glass and can influence long-term performance. Our proposed research will address these issues through a combination of aqueous-phase dissolution/reaction experiments and probing of the resulting surface layers with state-of-the-art analytical methods. These methods include solid-state nuclear magnetic resonance (SSNMR) and time-of-flight secondary ion mass spectrometry (TOF-SIMS). The resulting datasets will then be coupled with computational chemistry and reaction-rate modeling to address the most persistent uncertainties in the understanding of glass corrosion, which indeed have limited the performance of the best corrosion models to date. With an improved understanding of corrosion mechanisms, models can be developed and improved that, while still conservative, take advantage of the inherent durability of the waste form to enable secure repositories to be engineered with a much higher density of waste disposition. We propose the synthesis, corrosion, and characterization of two sets of glass samples containing approximately 8 single-component oxides eachas models for corrosion studies of more complicated glass systems (which can contain in excess of 25 single-component ingredients). Powdered samples and millimeter- sized coupons of these simpler glasses will be corroded in solutions that begin at circumneutral pH, but are known to increase in alkalinity as corrosion proceeds and saturation in silica species is approached. Through carefully selected isotopic substitutions with nuclides that are readily detected with SSNMR and TOF-SIMS methods, we will be able to follow the diffusion of atoms into and out of the reacted surface layers of these glasses and provide new data for testing with existing reaction models. The models can then be further extended or updated to take our new data into account, allowing the existing long-term glass corrosion models to more accurately reflect the extraordinary durability of these systems. With improved models, a significant opportunity exists to better utilize the storage volume of any geologic repository.

Pantano, Carlos; Ryan, Joseph; Strachan, Denis

2013-11-10T23:59:59.000Z

455

Meeting Biofuels Targets: Implications for Land Use, Greenhouse Gas Emissions, and Nitrogen Use in Illinois  

Science Journals Connector (OSTI)

This article develops a dynamic micro-economic land use model to identify the cost-effective allocation of cropland for traditional row ... model and together with county level data on costs of production for Ill...

Madhu Khanna; Hayri nal; Xiaoguang Chen

2010-01-01T23:59:59.000Z

456

The long-term change of El Nio Southern Oscillation in an ensemble reanalysis and climate coupled models  

E-Print Network [OSTI]

THE LONG-TERM CHANGE OF EL NI?O SOUTHERN OSCILLATION IN AN ENSEMBLE REANALYSIS AND CLIMATE COUPLED MODELS A Dissertation by CHUNXUE YANG Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment...ESM1-M Norwegian Climate Centre 3 F19, L26 gx1v6L53 Bentsen et al. [2012] 20 CHAPTER III RESULTS Ensemble Reanalysis Ensemble Statistics El Ni?o/Southern Oscillation (ENSO) has significant impact on world economics, society...

Yang, Chunxue 1984-

2012-12-06T23:59:59.000Z

457

Comparison of Measurement And Modeling Of Current Profile Changes Due To Neutral Bean Ion Redistribution During TAE Avalanches in NSTX  

SciTech Connect (OSTI)

Brief "avalanches" of toroidal Alfven eigenmodes (TAEs) are observed in NSTX plasmas with several different n numbers simultaneously present. These affect the neutral beam ion distribution as evidenced by a concurrent drop in the neutron rate and, sometimes, beam ion loss. Guiding center orbit modeling has shown that the modes can transiently render portions of the beam ion phase space stochastic. The resulting redistribution of beam ions can also create a broader beam-driven current profile and produce other changes in the beam ion distribution function

Darrow, Douglas

2013-07-09T23:59:59.000Z

458

MODIS Land Products Subsets  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Method Used to Calculate Albedo from the MODIS Albedo Model Parameter Product MCD43A1 Method Used to Calculate Albedo from the MODIS Albedo Model Parameter Product MCD43A1 Albedo MCD43A The ALBEDO data are based on the Terra and Aqua(Combined) MODIS BRDF / Albedo Model Parameter Product (MCD43A1). The primary BRDF model parameters from MCD43A1 are used in the following equations to calculate Black-sky, white-sky, and actual (blue-sky) albedo. We have used a solar zenith angle (szn) equal to local solar noon and an optical depth of 0.2 as default values in calculating these data files. Black-sky Albedo = Parameters_01 + Parameters_02 * (-0.007574 + (-0.070987 * szn2) + (0.307588 * szn3)) + Parameters_03 * (-1.284909 + (-0.166314 * szn2) + (0.041840 * szn3)) White-sky Albedo = Parameters_01 + Parameters_02 * (0.189184) + Parameters_03 * (-1.377622)

459

Climate Change Simulations with CCSM and CESM Project at NERSC  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Climate Change Climate Change Simulations with CCSM & CESM Climate Change Simulations with CCSM & CESM Key Challenges: Perform fundamental research on the processes that influence the natural variability of Earth's climate system and relate those processes to possible future manifestations of anthropogenic climate change. This work utilizes an emerging class of Earth System Models that include detailed physical, chemical, and biological processes as well as interactions and feedbacks in the atmosphere, oceans, and land surface, to carry out policy-relevant adaptation/mitigation scenarios. This involves using CCSM3.5 and CCSM4 at resolutions higher than ever possible before. Why it Matters: These studies will provide data for the Intergovernmental Panel on Climate Change Fifth Assessment Report (IPCC AR5). The 2007 IPCC

460

Subtask 2.4 - Integration and Synthesis in Climate Change Predictive Modeling  

SciTech Connect (OSTI)

The Energy & Environmental Research Center (EERC) completed a brief evaluation of the existing status of predictive modeling to assess options for integration of our previous paleohydrologic reconstructions and their synthesis with current global climate scenarios. Results of our research indicate that short-term data series available from modern instrumental records are not sufficient to reconstruct past hydrologic events or predict future ones. On the contrary, reconstruction of paleoclimate phenomena provided credible information on past climate cycles and confirmed their integration in the context of regional climate history is possible. Similarly to ice cores and other paleo proxies, acquired data represent an objective, credible tool for model calibration and validation of currently observed trends. It remains a subject of future research whether further refinement of our results and synthesis with regional and global climate observations could contribute to improvement and credibility of climate predictions on a regional and global scale.

Jaroslav Solc

2009-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "land change modeler" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

MAPSS Vegetation Modeling | Open Energy Information  

Open Energy Info (EERE)

MAPSS Vegetation Modeling MAPSS Vegetation Modeling Jump to: navigation, search Tool Summary Name: MAPSS Vegetation Modeling Agency/Company /Organization: United States Forest Service Sector: Land Focus Area: Agriculture, Biomass, Forestry Topics: Co-benefits assessment, - Environmental and Biodiversity, Resource assessment Resource Type: Maps, Software/modeling tools User Interface: Desktop Application Website: www.fs.fed.us/pnw/mdr/mapss/ MAPSS Vegetation Modeling Screenshot References: MAPSS[1] Applications "A landscape- to global-scale vegetation distribution model that was developed to simulate the potential biosphere impacts and biosphere-atmosphere feedbacks from climatic change. Model output from MAPSS has been used extensively in the Intergovernmental Panel on Climate

462

Modeling of thermodynamic and chemical changes in low-temperature geothermal systems  

SciTech Connect (OSTI)

A method was developed to incorporate the transport of several chemical components into a model of the transport of fluid mass and heat within a geothermal system. It was demonstrated that the use of coupled hydrological, thermal and chemical data allows for the determination of field porosities, amounts and regions of cool recharge into the system as well as field permeabilities and the hot reservoir volume. With the additional information a reliable prediction of the long-term cooling rate can be made.

Spencer, A.L.

1986-12-01T23:59:59.000Z

463

Changes in nutritional and sensory properties of orange juice packed in PET bottles: An experimental and modelling approach  

Science Journals Connector (OSTI)

Abstract Sensitivity to oxidation of an orange juice was investigated through packaging in standard PET or active PET with oxygen scavenger bottles. The evolution of dissolved oxygen was found to be similar in all bottles, whereas ascorbic acid degradation was related to the oxygen transfer with higher losses in standard PET (53%) against active PET (31%). Moreover, when juice was exposed to high intensity light, a fold faster degradation of ascorbic acid was observed compared to total darkness. Depending also on the light intensity and regardless of the package permeability, changes in the aromatic profile of the juice were observed due to the degradation of limonene and the formation of ?-terpineol, an off-flavour. A mechanistic model was developed to predict the shelf life of orange juice. This model, coupling O2 transfer and ascorbic acid oxidation reaction in the bottled juice, confirmed that oxygen permeation through packaging material could not be neglected.

Celine Bacigalupi; Marie Hlne Lemaistre; Naima Boutroy; Christophe Bunel; Stphane Peyron; Valrie Guillard; Pascale Chalier

2013-01-01T23:59:59.000Z

464

Land Validation web site  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

graphs and more worldwide NPP datasets graphs and more worldwide NPP datasets Graphs of biomass dyanmics and climate data for grassland sites have been added to the global terrestrial Net Primary Production (NPP) reference database at the ORNL DAAC. The NPP database has been compiled by Dick Olson and Jonathan Scurlock under the auspices of the International Geosphere-Biosphere Programme and funding from the Terrestrial Ecology Program of NASA's Office of Earth Science. Browsing through the graphs will help users to select data of interest, and to see relationships between grassland biomass changes and driving climate variables such as rainfall. Graphs are presently available for 14 of the 31 grassland sites. In addition, two more well-known worldwide datasets are available for browsing and downloading from the ORNL DAAC's NPP Web pages. The Osnabruck

465

Geothermal/Land Use | Open Energy Information  

Open Energy Info (EERE)

Geothermal/Land Use Geothermal/Land Use < Geothermal(Redirected from Land Use) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Land Use Leasing Exploration Well Field Power Plant Transmission Environment Water Use Print PDF Geothermal Land Use Planning General Regulatory Roadmap The Bureau of Land Management (BLM) and the USDA Forest Service (FS) have prepared a joint Programmatic Environmental Impact Statement (PEIS) to analyze and expedite the leasing of BLM-and FS-administered lands with high potential for renewable geothermal resources in 11 Western states and Alaska. Geothermal Land Use Planning is ... Example Land Use Plans References Information for Publication Standards for EA/EIS/Planning Documents IM 2004-110.pdf Fluid Mineral Leasing and Related Planning and National Environmental Policy Act (NEPA) Processes April 11, 2004 and

466

land-use | OpenEI  

Open Energy Info (EERE)

land-use land-use Dataset Summary Description This dataset is part of a larger internal dataset at the National Renewable Energy Laboratory (NREL) that explores various characteristics of large solar electric (both PV and CSP) facilities around the United States. This dataset focuses on the land use characteristics for solar facilities that are either under construction or currently in operation. Source Land-Use Requirements for Solar Power Plants in the United States Date Released June 25th, 2013 (5 months ago) Date Updated Unknown Keywords acres area average concentrating solar power csp Density electric hectares km2 land land requirements land use land-use mean photovoltaic photovoltaics PV solar statistics Data application/vnd.openxmlformats-officedocument.spreadsheetml.sheet icon Master Solar Land Use Spreadsheet (xlsx, 1.5 MiB)

467

Mapping soil salinity changes using remote sensing in Central Iraq  

Science Journals Connector (OSTI)

Abstract Salinization is a common problem for agriculture in dryland environments and it has greatly affected land productivity and even caused cropland abandonment in Central and Southern Iraq. Hence it is of pressing importance to quantify the spatial distribution of salinity and its changing trend in space and time and ascertain the driving forces thereof. This study aims at such a diachronic salinity mapping and analysis using multitemporal remote sensing taking a pilot site, the Dujaila area in Central Iraq, as an example. For this purpose, field survey and soil sampling were conducted in the 20112012 period, and a multitemporal remote sensing dataset consisting of satellite imagery dated 19881993, 19982002, and 20092012 was prepared. An innovative processing approach, the multiyear maxima-based modeling approach, was proposed to develop remote sensing salinity models. After evaluation of their suitability, the relevant models were applied to the images for multitemporal salinity mapping, quantification, and change tracking in space and time. The driving causes of salinization in the study area were evaluated. The results reveal that the developed salinity models can reliably predict salinity with an accuracy of 82.57%, indicating that our mapping methodology is relevant and extendable to other similar environments. In addition, salinity has experienced significant changes in the past 30years in Dujaila, especially, very strongly salinized land got continuously expanded, and all these changes are related to land use practices and management of farmers, which are closely associated with the macroscopic socioeconomic environment of the country.

Weicheng Wu; Ahmad S. Mhaimeed; Waleed M. Al-Shafie; Feras Ziadat; Boubaker Dhehibi; Vinay Nangia; Eddy De Pauw

2014-01-01T23:59:59.000Z

468

Land Reform and Exclusion of Poor Jagat Basnet  

E-Print Network [OSTI]

of effective land management, land administration and all land reform processes interrelated, by land reform, it is widely understood to be a process of confiscating someone's land and award or with the land reform because of historical reasons of a power nexus. 6.2 The Historical Process of Land

Richner, Heinz

469

An integrated assessment modeling framework for uncertainty studies in global and regional climate change: the MIT IGSM-CAM (version 1.0)  

E-Print Network [OSTI]

This paper describes a computationally efficient framework for uncertainty studies in global and regional climate change. In this framework, the Massachusetts Institute of Technology (MIT) Integrated Global System Model ...

Monier, Erwan

470

Multi-model Mean Nitrogen and Sulfur Deposition from the Atmospheric Chemistry and Climate Model Intercomparison Project (ACCMIP): Evaluation of Historical and Projected Future Changes  

SciTech Connect (OSTI)

We present multi-model global datasets of nitrogen and sulfate deposition covering time periods from 1850 to 2100, calculated within the Atmospheric Chemistry and Climate Model Intercomparison Project (ACCMIP). The computed deposition fluxes are compared to surface wet deposition and ice-core measurements. We use a new dataset of wet deposition for 2000-2002 based on critical assessment of the quality of existing regional network data. We show that for present-day (year 2000 ACCMIP time-slice), the ACCMIP results perform similarly to previously published multi-model assessments. The analysis of changes between 1980 and 2000 indicates significant differences between model and measurements over the United States, but less so over Europe. This difference points towards misrepresentation of 1980 NH3 emissions over North America. Based on ice-core records, the 1850 deposition fluxes agree well with Greenland ice cores but the change between 1850 and 2000 seems to be overestimated in the Northern Hemisphere for both nitrogen and sulfur species. Using the Representative Concentration Pathways to define the projected climate and atmospheric chemistry related emissions and concentrations, we find large regional nitrogen deposition increases in 2100 in Latin America, Africa and parts of Asia under some of the scenarios considered. Increases in South Asia are especially large, and are seen in all scenarios, with 2100 values more than double 2000 in some scenarios and reaching >1300 mgN/m2/yr averaged over regional to continental scale regions in RCP 2.6 and 8.5, ~30-50% larger than the values in any region currently (2000). Despite known issues, the new ACCMIP deposition dataset provides novel, consistent and evaluated global gridded deposition fields for use in a wide range of climate and ecological studies.

Lamarque, Jean-Francois; Dentener, Frank; McConnell, J.R.; Ro, C-U; Shaw, Mark; Vet, Robert; Bergmann, D.; Cameron-Smith, Philip; Dalsoren, S.; Doherty, R.; Faluvegi, G.; Ghan, Steven J.; Josse, B.; Lee, Y. H.; MacKenzie, I. A.; Plummer, David; Shindell, Drew; Skeie, R. B.; Stevenson, D. S.; Strode, S.; Zeng, G.; Curran, M.; Dahl-Jensen, D.; Das, S.; Fritzsche, D.; Nolan, M.

2013-08-20T23:59:59.000Z

471

Global land and water grabbing  

Science Journals Connector (OSTI)

...ratio between blue water and irrigation efficiency. Values per unit area refer to green and max blue water per...Arab Emirates, India, United Kingdom, Egypt, China, and Israel (Table 2...land and water grabbing enhance food and energy availability in the grabbing country...

Maria Cristina Rulli; Antonio Saviori; Paolo DOdorico

2013-01-01T23:59:59.000Z

472

2011LandesBioscience. Donotdistribute.  

E-Print Network [OSTI]

Quan,1 James C.A. Bardwell,1 Ursula Jakob,1 Sue Wickner2 and Matthew R. Chapman1, * 1 Department Landes Bioscience RESEARCH PAPER 323 Prion Volume 5 Issue 4 *Correspondence to: Matthew R. Chapman; Email functional amyloid assembly Margery L. Evans,1 Jens C. Schmidt,1 Marianne Ilbert,1 Shannon M. Doyle,2 Shu

Bardwell, James

473

Dry Lands and Desalted Water  

Science Journals Connector (OSTI)

...Lands and Desalted Wat Desalination can supply water to...desert ceptable level of economics, education ty, rain...the extent to which desalination agri-culture will...be-lieve, is that desalination agriculture is in the...The Engineering Economics of Large-Scale Desalting...

Gale Young

1970-01-23T23:59:59.000Z

474

A framework for benchmarking land models  

E-Print Network [OSTI]

Soil Carbon and Nitro- gen Data, NDP-018, Oak Ridge NationalLaboratory, Oak Ridge, Tennessee USA, 146, 1986.at: http://daac.ornl.gov/ from Oak Ridge National Laboratory

2012-01-01T23:59:59.000Z

475

Estimating Carbon Supply Curves for Global Forests and Other Land Uses |  

Open Energy Info (EERE)

Estimating Carbon Supply Curves for Global Forests and Other Land Uses Estimating Carbon Supply Curves for Global Forests and Other Land Uses Jump to: navigation, search Tool Summary Name: Estimating Carbon Supply Curves for Global Forests and Other Land Uses Agency/Company /Organization: Resources for the Future Sector: Land Focus Area: Forestry, Agriculture Topics: GHG inventory, Resource assessment Resource Type: Guide/manual Website: www.rff.org/documents/RFF-DP-01-19.pdf Estimating Carbon Supply Curves for Global Forests and Other Land Uses Screenshot References: Estimating Carbon Supply Curves for Global Forests and Other Land Uses[1] Abstract "This study develops cumulative carbon "supply curves" for global forests utilizing an dynamic timber supply model for sequestration of forest carbon. Because the period of concern is the next century, and

476

Design of a Gust-Attenuation Controller for Landing Operations of Unmanned Autonomous Helicopters  

E-Print Network [OSTI]

Design of a Gust-Attenuation Controller for Landing Operations of Unmanned Autonomous Helicopters landing operations of an Unmanned Autonomous Helicopter (UAH). A heave motion model of an UAH is constructed for the purpose of capturing dynamic variations of thrust due to horizontal wind gusts

Pota, Himanshu Roy

477

Mined Land Reclamation on DOE's Uranium Lease Tracts, Southwestern...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Mined Land Reclamation on DOE's Uranium Lease Tracts, Southwestern Colorado Mined Land Reclamation on DOE's Uranium Lease Tracts, Southwestern Colorado Mined Land Reclamation on...

478

Solar Energy on Public Lands | Department of Energy  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Solar Energy on Public Lands Solar Energy on Public Lands This website describes federal policy for deploying utility scale solar on public lands. It includes a roadmap for...

479

Global land use change, economic globalization, and the looming land scarcity  

Science Journals Connector (OSTI)

...carbon savings from biofuels in Brazil . Proc Natl Acad Sci USA 107 : 3388...generation biofuel targets . Energy Policy , 10.1016/j.enpol...Syst 84:121 ZZQQhy153. 19. Renewable Fuels Agency (2008) The Gallagher...of Bio-fuel Production (Renewable Fuels Agency, St Leonards-on-Sea...

Eric F. Lambin; Patrick Meyfroidt

2011-01-01T23:59:59.000Z

480

Understanding and Mapping Land-Use and Land-Cover Change along Bolivia's Corredor Bioceancio  

E-Print Network [OSTI]

Trigo (Association of Oilseed and Wheat Producers) AVHRR Advanced Very High Resolution Radiometer CAF Corporaci?n Andina de Fomento (Andean Development Corporation) CAO C?mara Agropecuaria del Oriente (Agricultural Chamber of the East...

Redo, Daniel J.

2011-08-08T23:59:59.000Z

Note: This page contains sample records for the topic "land change modeler" from the National Library of EnergyBeta (NLEBeta).
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481

United States Submission on Land-Use, Land-Use Change, and Forestry  

E-Print Network [OSTI]

to the objective and principles of the Convention and its Kyoto Protocol F. General U.S. views on narrowly 3.3 and 3.4 activities A. Monitoring and measuring GHGs B. Accounting for non-CO2 GHG emissions of greenhouse gases at safe levels, by taking into account the entire contribution ­ both positive and negative

482

Global land use change, economic globalization, and the looming land scarcity  

Science Journals Connector (OSTI)

...policy mandates of petroleum substitution by biofuels...by increasing imports of agricultural or...area embodied in exports (20). In 1994, 35...their cereal imports per capita by 42...conservation programs in China and Finland have...through wood imports (40). In the 19th...account their exports of agricultural...

Eric F. Lambin; Patrick Meyfroidt

2011-01-01T23:59:59.000Z

483

Global land use change, economic globalization, and the looming land scarcity  

Science Journals Connector (OSTI)

...more complex by the processes of economic globalization. In...preservation (30). Evaluations of the effectiveness...rapeseed oil used for biodiesel. The market price...foreignisation of space: Seven processes driving the current...areas, because of processes as diverse as soil...

Eric F. Lambin; Patrick Meyfroidt

2011-01-01T23:59:59.000Z

484

Drilling Waste Management Fact Sheet: Land Application  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Land Application Land Application Fact Sheet - Land Application The objective of applying drilling wastes to the land is to allow the soil's naturally occurring microbial population to metabolize, transform, and assimilate waste constituents in place. Land application is a form of bioremediation, and is important enough to be described in its own fact sheet; other forms of bioremediation are described in a separate fact sheet. Several terms are used to describe this waste management approach, which can be considered both treatment and disposal. In general, land farming refers to the repeated application of wastes to the soil surface, whereas land spreading and land treatment are often used interchangeably to describe the one-time application of wastes to the soil surface. Some practitioners do not follow the same terminology convention, and may interchange all three terms. Readers should focus on the technologies rather than on the specific names given to each process.

485

Solar Land Use | Open Energy Information  

Open Energy Info (EERE)

Land Use Land Use Jump to: navigation, search (The following text is derived from a National Renewable Energy Laboratory report on solar land use in the United States.)[1] One concern regarding large-scale deployment of solar energy is its potentially significant land use. This article summarizes data and analysis of the land use associated with U.S. utility-scale ground-mounted photovoltaic (PV) and concentrating solar power (CSP) facilities. This article presents total and direct land-use results for various solar technologies and system configurations, on both a capacity and an electricity-generation basis. The total area corresponds to all land enclosed by the site boundary. The direct area comprises land directly occupied by solar arrays, access roads, substations, service buildings, and

486

Land and Atmospheric Science GRAD STUDENT HANDBOOK  

E-Print Network [OSTI]

1 Land and Atmospheric Science GRAD STUDENT HANDBOOK 2011-2012 WELCOME Welcome to the Graduate on the fundamentals of Earth system processes related to land and atmosphere and their coupled interactions. Students

Minnesota, University of

487

Land and Atmospheric Science GRAD STUDENT HANDBOOK  

E-Print Network [OSTI]

1 Land and Atmospheric Science GRAD STUDENT HANDBOOK 2012-2013 WELCOME Welcome to the Graduate on the fundamentals of Earth system processes related to land and atmosphere and their coupled interactions. Students

Minnesota, University of

488

GEORGE LEA FOUNDER'S SCHOLARSHIP PUBLIC LANDS FOUNDATION  

E-Print Network [OSTI]

1 GEORGE LEA FOUNDER'S SCHOLARSHIP PUBLIC LANDS FOUNDATION P.O. Box 7226 Arlington, VA 22207 Scholarship Application Form This scholarship is being offered by the Public Lands Foundation, a national non

489

Land cover change and water vapour flows: learning from Australia  

Science Journals Connector (OSTI)

...Agriculture trends Australia Conservation of Natural Resources Ecosystem Environment Fresh Water Plant Transpiration physiology...Gleick, P. H. 1993 Water in crises. New York...human well-being. Water Int. 25, 178184. Graetz...The terrestrial carbon pools of the Australian continent...

2003-01-01T23:59:59.000Z

490

Altered Belowground Carbon Cycling Following Land-Use Change  

E-Print Network [OSTI]

, University of Illinois, Urbana, Illinois, USA; 2 Energy Bioscience Institute, University of Illinois, Urbana, Illinois, USA; 3 Department of Plant Biology, University of Illinois, Urbana, Illinois, USA; 4 Photosynthesis Research Unit, US Department of Agriculture, University of Illinois, Urbana, Illinois, USA; 5

DeLucia, Evan H.

491

Land cover change and water vapour flows: learning from Australia  

Science Journals Connector (OSTI)

...Eucalyptus species in plantations on a saline farm catchment...in a discharge site plantation in the Western Australian...1983 Rice yield, biomass and leaf area related...Conversion of grasslands to plantations: anticipating the negative...Can- berra, ACT. Wood, W. E. 1924 Increase...

2003-01-01T23:59:59.000Z

492

Marine One Landing Exercise at Argonne  

SciTech Connect (OSTI)

Marine One and its support helicopters conduct a landing exercise at Argonne prior to the President's visit.

None

2013-03-20T23:59:59.000Z

493

LAND USE AND OWNERSHIP, WILLISTON BASIN  

E-Print Network [OSTI]

Chapter WM LAND USE AND OWNERSHIP, WILLISTON BASIN By T.T. Taber and S.A. Kinney In U.S. Geological........................................WM-1 Map Information for the Williston Basin Land Use And Land Cover Map.........................................................WM-2 Map Information for the Williston Basin Subsurface Ownership map

494

Autonomous Landing of MAVs on an Arbitrarily Textured Landing Site using Onboard Monocular Vision  

E-Print Network [OSTI]

Autonomous Landing of MAVs on an Arbitrarily Textured Landing Site using Onboard Mon