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1

Ecotoxicology of tropical marine ecosystems  

SciTech Connect

The negative effects of chemical contaminants on tropical marine ecosystems are of increasing concern as human populations expand adjacent to these communities. Watershed streams and ground water carry a variety of chemicals from agricultural, industrial, and domestic activities, while winds and currents transport pollutants from atmospheric and oceanic sources to these coastal ecosystems. The implications of the limited information available on impacts of chemical stressors on mangrove forests, seagrass meadows, and coral reefs are discussed in the context of ecosystem management and ecological risk assessment. Three classes of pollutants have received attention: heavy metals, petroleum, and synthetic organics. Heavy metals have been detected in all three ecosystems, causing physiological stress, reduced reproductive success, and outright mortality in associated invertebrates and fishes. Oil spills have been responsible for the destruction of entire coastal shallow-water communities, with recovery requiring years. Herbicides are particularly detrimental to mangroves and seagrasses and adversely affect the animal-algal symbioses in corals. Pesticides interfere with chemical cues responsible for key biological processes, including reproduction and recruitment of a variety of organisms. Information is lacking with regard to long-term recovery, indicator species, and biomarkers for tropical communities. Critical areas that are beginning to be addressed include the development of appropriate benchmarks for risk assessment, baseline monitoring criteria, and effective management strategies to protect tropical marine ecosystems in the face of mounting anthropogenic disturbance.

Peters, E.C. [Tetra Tech, Inc., Fairfax, VA (United States); Gassman, N.J.; Firman, J.C. [Univ. of Miami, FL (United States). Rosenstiel School of Marine and Atmospheric Science; Richmond, R.H. [Univ. of Guam, Mangilao (Guam). Marine Lab.; Power, E.A. [EVS Environment Consultants, Ltd., North Vancouver, British Columbia (Canada)

1997-01-01T23:59:59.000Z

2

Two Ecosystem Demography Models Released  

NLE Websites -- All DOE Office Websites (Extended Search)

Ecosystem Demography Models Released Ecosystem Demography Models Released The ORNL DAAC is pleased to announce the release of two Ecosystem Demography Models: Ecosystem Demography Model: U.S. Ecosystem Carbon Stocks and Fluxes, 1700-1990 . Data set prepared by G. Hurtt, S.W. Pacala, P.R. Moorcroft, J. Caspersen, E. Shevliakova, R.A. Houghton, B. Moore III, and J. Fisk. This model product contains the source code for the Ecosystem Demography Model (ED version 1.0) as well as model input and output data files for the conterminous United States. The ED is a mechanistic ecosystem model built around established sub-models of leaf level physiology, organic matter decomposition, hydrology, and functional biodiversity. It was used herein to estimate ecosystem carbon stocks and fluxes in the conterminous U.S. at

3

Simulation Modeling of Estuarine Ecosystems  

Science Journals Connector (OSTI)

A simulation model has been developed of Galveston Bay, Texas ecosystem. Secondary productivity measured by harvestable species...

Robert W. Johnson

1980-01-01T23:59:59.000Z

4

Net ecosystem fluxes of isoprene over tropical South America inferred from Global Ozone Monitoring Experiment (GOME)  

E-Print Network (OSTI)

Net ecosystem fluxes of isoprene over tropical South America inferred from Global Ozone Monitoring estimate isoprene emissions over tropical South America during 1997­2001 using column measurements (ATSR) firecounts and GOME NO2 columns. We find that South America can be split into eastern and western

Chance, Kelly

5

An Analytical Model for Tropical Relative Humidity  

Science Journals Connector (OSTI)

An analytical model is derived for tropical relative humidity using only the Clausius–Clapeyron relation, hydrostatic balance, and a bulk-plume water budget. This theory is constructed for radiative–convective equilibrium and compared against a ...

David M. Romps

2014-10-01T23:59:59.000Z

6

Remote sensing of soil radionuclide fluxes in a tropical ecosystem  

SciTech Connect

We are using a transponding geostationary satellite to collect surface environmental data to describe the fate of soil-borne radionuclides. The remote, former atomic testing grounds at the Eniwetok and Bikini Atolls present a difficult environment in which to collect continuous field data. Our land-based, solar-powered microprocessor and environmental data systems remotely acquire measurements of net and total solar radiation, rain, humidity, temperature, and soil-water potentials. For the past year, our water flux model predicts wet season plant transpiration rates nearly equal to the 6 to 7 mm/d evaporation pan rate, which decreases to 2 to 3 mm/d for the dry season. Radioisotopic analysis confirms the microclimate-estimated 1:3 to 1:20 soil to plant /sup 137/Cs dry matter concentration ratio. This ratio exacerbates the dose to man from intake of food plants. Nephelometer measurements of airborne particulates presently indicate a minimum respiratory radiological dose.

Clegg, B.; Koranda, J.; Robinson, W.; Holladay, G.

1980-11-06T23:59:59.000Z

7

Ecosystem dynamics at six contrasting sites: a generic modelling study  

Science Journals Connector (OSTI)

A pelagic marine ecosystem simulation model ERSEM-2004, developed from the European Regional Seas Ecosystem Model (ERSEM II), is presented along with a parameter set applicable to six highly contrasting sites, ranging from a temperate mixed shelf station to a permanently stratified tropical deep-ocean station. The physical characteristics are simulated by direct coupling to a 1D vertically resolved turbulence model, parameterised for each site. A mathematical description of the pelagic ecosystem model is presented. Additions to ERSEM II's well resolved community and decoupling of gross production and ambient nutrient concentration include variable carbon to chlorophyll ratios, coupling of bacterial production to nutrient availability, improved resolution of the organic particulate and dissolved fractions and developments to the mesozooplankton description. Comparison of seasonally depth resolved and integrated properties illustrates that the model produces a wide range of community dynamics and structures that can be plausibly related to variations in mixing, temperature, irradiance and nutrient supply. The spatial–temporal variability in key environmental indicators only partially correlates with the spatial–temporal variability in community structure (?0.75) between spatial–temporal variability in community structure (biomass) and function (production). ERSEM-2004 is shown to be a robust model that is capable of representing a range of systems commonly described in the marine system. Consequently, the model is proposed as a potential basis for an ecosystem-based management tool that may, with appropriate physical representation, be applied over large geographic and temporal scales with utility to both heuristic and predictive studies of the marine lower trophic levels.

J.C. Blackford; J.I. Allen; F.J. Gilbert

2004-01-01T23:59:59.000Z

8

Probabilistic Multiple-Linear Regression Modeling for Tropical Cyclone Intensity  

Science Journals Connector (OSTI)

The authors describe the development and verification of a statistical model relating tropical cyclone intensity to the local large-scale environment. A multiple linear regression framework is used to estimate the expected intensity of a tropical ...

Chia-Ying Lee; Michael K. Tippett; Suzana J. Camargo; Adam H. Sobel

9

Anthropogenic impacts on tropical forest biodiversity: a network structure and ecosystem functioning perspective  

Science Journals Connector (OSTI)

...terrestrial, marine and other aquatic ecosystems and the ecological complexes...longer performs the ecosystem functions and services...primary forest in terms of ecosystem functions and services...themselves can recover, the restoration of interactions and...

2010-01-01T23:59:59.000Z

10

Hybrid coupled modeling of the tropical Pacific using neural networks  

E-Print Network (OSTI)

Hybrid coupled modeling of the tropical Pacific using neural networks Shuyong Li, William W. Hsieh To investigate the potential for improving hybrid coupled models (HCM) of the tropical Pacific by the use: dynamical coupled models, statistical models and hybrid coupled models [Barnston et al., 1994]. A hybrid

Hsieh, William

11

Modeling Multiple Ecosystem Services, Biodiversity Conservation, Commodity Production, and Tradeoffs at Landscape Scales  

E-Print Network (OSTI)

Modeling Multiple Ecosystem Services, Biodiversity Conservation, Commodity Production ECOSYSTEM SERVICES_ 4 o Modeling multiple ecosystem services, biodiversity conservation, commodity tradeoff between biodiversity conservation and J?l ecosystem services. Scenarios involving more development

Vermont, University of

12

Reduced Order Modeling of the Upper Tropical Pacific Ocean Model Using Proper Orthogonal Decomposition  

E-Print Network (OSTI)

Reduced Order Modeling of the Upper Tropical Pacific Ocean Model Using Proper Orthogonal of a large-scale upper ocean circulation in the tropic Pacific domain. We construct different POD models-scale seasonal variability of the tropic Pacific obtained by the original model is well captured by a low

Aluffi, Paolo

13

Evaluation of Tropical Cyclone Center Identification Methods in Numerical Models  

Science Journals Connector (OSTI)

Identifying the center of a tropical cyclone in a high-resolution model simulation has a number of operational and research applications, including constructing a track, calculating azimuthal means and perturbations, and diagnosing vortex tilt. ...

Leon T. Nguyen; John Molinari; Diana Thomas

2014-11-01T23:59:59.000Z

14

Ecological feedbacks following deforestation create the potential for a catastrophic ecosystem shift in tropical dry forest  

Science Journals Connector (OSTI)

...open. Table 1. Atmospheric deposition of phosphorus as...transported by wind and water (13) and in harvest...in P input from atmospheric deposition. Our estimates...ground by storm water washing plant surfaces...and by canopy condensation or fog deposition...feedback in the recovery of tropical...

Deborah Lawrence; Paolo D'Odorico; Lucy Diekmann; Marcia DeLonge; Rishiraj Das; James Eaton

2007-01-01T23:59:59.000Z

15

Can we predict carbon stocks in tropical ecosystems from tree diversity? Comparing species and functional  

E-Print Network (OSTI)

and functional diversity in a plantation and a natural forest Maria C. Ruiz-Jaen1 and Catherine Potvin1,2 1, functional trait diversity, functional traits, mixed-species plantations, Panama, species diversity, tree motivation to con- serve tropical forests and to design carbon-enriched plantations. Here, we examine

Bermingham, Eldredge

16

Hybrid coupled models of the tropical Pacific: I interannual variability  

E-Print Network (OSTI)

Y. Tang Hybrid coupled models of the tropical Pacific: I interannual variability Received: 20 Two hybrid coupled models (HCMs), an intermediate complexity dynamical ocean model cou- pled to either), hybrid models (e.g., Barnett et al. 1993; Balmaseda et al. 1994,1995), and fully coupled general

Tang, Youmin

17

Oxygen: A Fundamental Property Regulating Pelagic Ecosystem Structure in the Coastal Southeastern Tropical  

E-Print Network (OSTI)

Oxygen: A Fundamental Property Regulating Pelagic Ecosystem Structure in the Coastal Southeastern questions about the role of temperature. Here we investigate the role of oxygen in structuring fish that the distribution of oxygen in the ocean is changing with uncertain consequences. Methodology/Principal Findings

18

Simple Multicloud Models for the Diurnal Cycle of Tropical Precipitation. Part I: Formulation and the Case of the Tropical Oceans  

Science Journals Connector (OSTI)

The variation of tropical precipitation due to the diurnal cycle of solar heating is examined here in the context of two simple models for tropical convection. The models utilize three cloud types—congestus, deep, and stratiform—that are believed ...

Yevgeniy Frenkel; Boualem Khouider; Andrew J. Majda

2011-10-01T23:59:59.000Z

19

Estimation of Parameters in Carbon Sequestration Models from Net Ecosystem  

E-Print Network (OSTI)

Estimation of Parameters in Carbon Sequestration Models from Net Ecosystem Exchange Data Luther in the context of a deterministic com- partmental carbon sequestration system. Sensitivity and approximation usefulness in the estimation of parameters within a compartmental carbon sequestration model. Previously we

White, Luther

20

The tropical precipitation response to Andes topography and ocean heat fluxes in an aquaplanet model  

Science Journals Connector (OSTI)

This aquaplanet modeling study using AM2.1 examines how ocean energy transport and topography influence the location of tropical precipitation. Adding realistic Andes topography regionally displaces tropical rainfall from the equator into the ...

Elizabeth A. Maroon; Dargan M. W. Frierson; David S. Battisti

Note: This page contains sample records for the topic "tropical ecosystem model" 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

Why do model tropical cyclones intensify more rapidly at low latitudes?  

Science Journals Connector (OSTI)

We examine the problem of why model tropical cyclones intensify more rapidly at low latitudes. Our answer to this question touches on practically all facets of the dynamics and thermodynamics of tropical cyclones. The answer invokes the ...

Roger K. Smith; Gerard Kilroy; Michael T. Montgomery

22

An optimizing reduced order FDS for the tropical Pacific Ocean reduced gravity model  

E-Print Network (OSTI)

An optimizing reduced order FDS for the tropical Pacific Ocean reduced gravity model Zhendong Luoa) for the tropical Pacific Ocean reduced gravity model. Ensembles of data are compiled from transient solutions computed from the discrete equation system derived by FDS for the tropical Pacific Ocean reduced gravity

Aluffi, Paolo

23

Analytic model of upper tropospheric clouds in the tropical Hadley cell  

Science Journals Connector (OSTI)

We have developed a two-dimensional analytic model that describes the behavior of upper tropospheric clouds in the tropical Hadley cell. The behavior of the model is...

Kyoko K. Tanaka; Tetsuo Yamamoto; Sei-ichiro Watanabe…

2008-03-01T23:59:59.000Z

24

Interhemispheric Teleconnections from Tropical Heat Sources in Intermediate and Simple Models  

E-Print Network (OSTI)

the prescribed tropical heating in both intensity and geographical extent and by inducing remote precipitation anomalies by interaction with the basic state. 1. Introduction Tropical heat sources can remotely influenceInterhemispheric Teleconnections from Tropical Heat Sources in Intermediate and Simple Models XUAN

25

A Model Evaluation Data Set for the Tropical ARM Sites  

DOE Data Explorer (OSTI)

This data set has been derived from various ARM and external data sources with the main aim of providing modelers easy access to quality controlled data for model evaluation. The data set contains highly aggregated (in time) data from a number of sources at the tropical ARM sites at Manus and Nauru. It spans the years of 1999 and 2000. The data set contains information on downward surface radiation; surface meteorology, including precipitation; atmospheric water vapor and cloud liquid water content; hydrometeor cover as a function of height; and cloud cover, cloud optical thickness and cloud top pressure information provided by the International Satellite Cloud Climatology Project (ISCCP).

Jakob, Christian

26

An Evaluation of Tropical Cyclone Genesis Forecasts from Global Numerical Models  

Science Journals Connector (OSTI)

Tropical cyclone (TC) forecasts rely heavily on output from global numerical models. While considerable research has investigated the skill of various models with respect to track and intensity, few studies have considered how well global models ...

Daniel J. Halperin; Henry E. Fuelberg; Robert E. Hart; Joshua H. Cossuth; Philip Sura; Richard J. Pasch

2013-12-01T23:59:59.000Z

27

Modeling the Dependence of Tropical Storm Counts in the North Atlantic Basin on Climate Indices  

Science Journals Connector (OSTI)

The authors analyze and model time series of annual counts of tropical storms lasting more than 2 days in the North Atlantic basin and U.S. landfalling tropical storms over the period 1878–2008 in relation to different climate indices. The ...

Gabriele Villarini; Gabriel A. Vecchi; James A. Smith

2010-07-01T23:59:59.000Z

28

Tropical Water Vapor and Cloud Feedbacks in Climate Models: A Further Assessment Using Coupled Simulations  

Science Journals Connector (OSTI)

By comparing the response of clouds and water vapor to ENSO forcing in nature with that in Atmospheric Model Intercomparison Project (AMIP) simulations by some leading climate models, an earlier evaluation of tropical cloud and water vapor ...

De-Zheng Sun; Yongqiang Yu; Tao Zhang

2009-03-01T23:59:59.000Z

29

TDE Ecosystem Model Intercomparison Data Archive: Model Descriptions  

NLE Websites -- All DOE Office Websites (Extended Search)

Model Descriptions Model Descriptions BGC++ BIOME-BGC CANOAK EALCO ecosys INTRASTAND LaRS LINKAGES v2.1 LoTEC MAESTRA NuCM PnET II SPA Literature Cited A total of 13 models were used in this study covering a range of temporal scales, spatial complexity, and mechanistic detail (Figure 1). Eight of the models (8) used an hourly time step, four models used a daily time step, and only one model used a monthly time step (i.e., PnET-II). Most models provided estimates for both stand carbon and water budgets, but other were limited to either the carbon (MAESTRA) or water (LINKAGES and NuCM) budgets. The most mechanistically complex models (ecosys, CLASS, LaRS, and CANOAK) also used a complete energy balance. A brief description of each of the models is provided below. BGC++ The BGC++ model (Hunt et al. 1999) simulates carbon, nitrogen, and

30

A Simple Model of Climatological Rainfall and Vertical Motion Patterns over the Tropical Oceans  

E-Print Network (OSTI)

A simple model is developed that predicts climatological rainfall, vertical motion, and diabatic heating profiles over the tropical oceans given the sea surface temperature (SST), using statistical relationships deduced ...

Back, Larissa E.

31

Hybrid coupled models of the tropical Paci c | II ENSO prediction  

E-Print Network (OSTI)

Hybrid coupled models of the tropical Paci#12;c | II ENSO prediction by Youmin Tang 1 , William W: ytang@cims.nyu.edu #12; Abstract Two hybrid coupled models (HCMs), a dynamical ocean model coupled Introduction Models for ENSO prediction can be categorized into purely statistical models, hybrid coupled

Hsieh, William

32

Evaluation of a process-based ecosystem model for long-term biomass and stand development of Eucalyptus globulus plantations  

Science Journals Connector (OSTI)

Versatile process-oriented ecosystem models are discussed as promising tools for the analyses of ecosystem services beyond wood yield, such as catchment water yield,...Eucalyptus globulus plantations in Australia...

Peter Miehle; Rüdiger Grote; Michael Battaglia…

2010-05-01T23:59:59.000Z

33

Mathematical Modelling and Numerical Simulation of Marine Ecosystems With Applications to Ice Algae.  

E-Print Network (OSTI)

??Sea-ice ecosystem modelling is a novel field of research. In this thesis, the main organism studied is sea-ice algae. A basic introduction to algae and… (more)

Wickramage, Shyamila Iroshi Perera

2013-01-01T23:59:59.000Z

34

Terrestrial Carbon Sinks for the United States Predicted from MODIS Satellite Data and Ecosystem Modeling  

Science Journals Connector (OSTI)

A simulation model based on satellite observations of monthly vegetation cover from the Moderate Resolution Imaging Spectroradiometer (MODIS) was used to estimate monthly carbon fluxes in terrestrial ecosystems of the conterminous United States ...

Christopher Potter; Steven Klooster; Alfredo Huete; Vanessa Genovese

2007-08-01T23:59:59.000Z

35

Improving parameterization of scalar transport through vegetation in a coupled ecosystem-atmosphere model  

E-Print Network (OSTI)

Several regional-scale ecosystem models currently parameterize subcanopy scalar transport using a rough-wall boundary eddy diffusivity formulation. This formulation predicts unreasonably high soil evaporation beneath tall, ...

Link, Percy Anne

2008-01-01T23:59:59.000Z

36

Sensitivity of tropical deep convection in global models: effects of horizontal resolution, surface constraints and 3D atmospheric nudging  

E-Print Network (OSTI)

, the Eastern Indian Ocean and Maritime Continent, and 174 tropical South America. The Inter Tropical Convergence Zone (ITCZ), and to a smaller extent the 175 South Pacific Convergence Zone (SPCZ), also have their signatures in the OLR and PR fields. When 176... larger for PR. This is 161 in agreement with previous studies, which show large model precipitation biases in tropical ocean 162 regions (Martin et al., 2010; Schiemann et al., 2014). For OLR ~85% of model configurations are in 163 good agreement...

Chemel, Charles; Russo, Maria; Hosking, Scott; Telford, Paul; Pyle, John

2014-01-01T23:59:59.000Z

37

[10-386] Assessing and Improving the Scale Dependence of Ecosystem Processes in Earth System Models  

E-Print Network (OSTI)

. Goodale Cornell U. *Overall Project Lead *Lead Institution Intellectual Merit: Earth system models include policies. Our research assesses and improves Earth system model simulations of the carbon cycle, ecosystem of the Community Climate System Model/Community Earth System Model, which includes statistical meteorological

38

Hybrid coupled models of the tropical Paci c |I Interannual variability  

E-Print Network (OSTI)

Hybrid coupled models of the tropical Paci#12;c |I Interannual variability by Youmin Tang 1 University, 251 Mercer Street, New York, NY 10012, USA. Email: ytang@cims.nyu.edu #12; Abstract Two hybrid), hybrid models (e.g., Barnett et al 1993; Balmaseda et al. 1994,1995), and fully coupled general

Hsieh, William

39

Climate response to tropical cyclone-induced ocean mixing in an1 Earth system model of intermediate complexity2  

E-Print Network (OSTI)

Climate response to tropical cyclone-induced ocean mixing in an1 Earth system model of intermediate system model of intermediate complexity. The parameterization is based on21 previously published global. Abstract19 We introduce a parameterization of ocean mixing by tropical cyclones (TCs) into20 an Earth

40

Cloud system resolving model simulations of tropical cloud systems observed during the Tropical  

E-Print Network (OSTI)

the Weather Research and Forecasting (WRF) model. The WRF model is configured with a highest-resolving domain convection. The second regime is a monsoon break, which contains intense localized systems that are rep-based observational systems including a polarimetric weather radar, cloud radar, wind profilers, radi- ation

Jakob, Christian

Note: This page contains sample records for the topic "tropical ecosystem model" 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

Lightning flash rate and chemistry simulation of tropical island convection using a cloud-resolved model  

E-Print Network (OSTI)

Lightning flash rate and chemistry simulation of tropical island convection using a cloud schemes (FRPSs) and estimating the average NO production per lightning flash in this unique storm type network (LINET) provided lightning flash data for the model and a lightning placement scheme injected

Maryland at College Park, University of

42

The role of piscivores in a species-rich tropical river  

E-Print Network (OSTI)

Much of the world's species diversity is located in tropical and sub-tropical ecosystems, and a better understanding of the ecology of these systems is necessary to stem biodiversity loss and assess community- and ecosystem-level responses...

Layman, Craig Anthony

2004-11-15T23:59:59.000Z

43

Predicting the net carbon exchanges of crop rotations in Europe with an agro-ecosystem model  

E-Print Network (OSTI)

Predicting the net carbon exchanges of crop rotations in Europe with an agro-ecosystem model S.Lehuger@art.admin.ch. Fax: (+41) 44 377 72 01. Phone: (+41) 44 377 75 13. hal-00414342,version2-1Sep2010 #12;Abstract Carbon and measuring land-atmosphere carbon exchanges from arable lands are important tasks to predict the influence

Boyer, Edmond

44

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

SciTech Connect

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

45

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

SciTech Connect

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

46

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

47

Evapotranspiration models compared on a Sierra Nevada forest ecosystem  

E-Print Network (OSTI)

are research forests across the United States, Canada, Brazil, and Costa Rica with instruments on towers ranged from simple temperature and solar radiation-driven equations to physically-based combination on a tower above the forest canopy. All models calculate potential evapotranspiration (assuming well

Cohen, Ronald C.

48

Improving the representation of terrestrial ecosystem processes in Earth system models to increase the quality of climate model projections and inform DOE's energy decisions  

E-Print Network (OSTI)

Improving the representation of terrestrial ecosystem processes in Earth system models to increase results are incorporated into Earth system models to improve climate projections. e overarching goal of TES is to improve the representation of terrestrial ecosystem processes in Earth system models

49

Real-Time Track Prediction of Tropical Cyclones over the North Indian Ocean Using the ARW Model  

E-Print Network (OSTI)

Real-Time Track Prediction of Tropical Cyclones over the North Indian Ocean Using the ARW Model of Technology Bhubaneswar, Odisha, India A. ROUTRAY National Centre for Medium Range Weather Forecasting, Noida The performance of the Advanced Research version of the Weather Research and Forecasting (ARW) model in real

50

On the relationship between uncertainties in tropical divergence and the hydrological cycle in global models  

SciTech Connect

A survey of tropical divergence from three GCMs, three global reanalyses and four insitu soundings from field campaigns shows the existence of large uncertainties in the ubiquity of shallow divergent circulation as well as the depth and strength of the deep divergent circulation. More specifically, only two GCMs out of the three GCMs and three global reanalyses show significant shallow divergent circulation, which is present in all in-situ soundings, and of the three GCMs and three global reanalyses, only two global reanalyses have deep divergence profiles that lie within the range of uncertainty of the soundings. The relationships of uncertainties in the shallow and deep divergent circulation to uncertainties in present day and projected strength of the hydrological cycle from the GCMs are assessed. In the tropics and subtropics, deep divergent circulation is the largest contributor to moisture convergence that balances the net precipitation, and inter-model differences in the present day simulations carry over onto the future projections. In comparison to the soundings and reanalyses, the GCMs are found to have deeper and stronger divergent circulation. While these two characteristics of GCM divergence affect the strength of the hydrological cycle, they tend to compensate for each other so that their combined effect is relatively modest.

Hagos, Samson M.; Leung, Lai-Yung R.

2012-01-01T23:59:59.000Z

51

Terrestrial & Subsurface Ecosystems | EMSL  

NLE Websites -- All DOE Office Websites (Extended Search)

cycle and ecosystem biogeochemistry and inform biogeochemistry components of Earth System Models. Theme Leads Instruments Science Highlights Publications Leads Nancy J. Hess...

52

EMSL - Terrestrial & Subsurface Ecosystems  

NLE Websites -- All DOE Office Websites (Extended Search)

cycle and ecosystem biogeochemistry and inform biogeochemistry components of Earth System Models. en Influence of Adsorption Site and Wavelength on the Photodesorption of NO...

53

Forecasting a large number of tropical cyclone intensities around Japan using a high-resolution atmosphere-ocean coupled model  

Science Journals Connector (OSTI)

This work quantifies the benefits of using a high-resolution atmosphere-ocean coupled model in the tropical cyclone (TC) intensity forecasts in the vicinity of Japan. To do so, a large number of high-resolution calculations were performed by ...

Kosuke Ito; Tohru Kuroda; Kazuo Saito; Akiyoshi Wada

54

Photosynthesis of a temperate fallow C3 herbaceous ecosystem: measurements and model simulations at the leaf and canopy levels  

E-Print Network (OSTI)

- 1 - Photosynthesis of a temperate fallow C3 herbaceous ecosystem: measurements and model, 31057 Toulouse Cedex 1, France Abstract The objectives of the study were to characterize photosynthesis of temperate fallow C3 herbaceous species and examine the performance of a simple photosynthesis model (based

Boyer, Edmond

55

Tracking tropical cloud systems - Observations for the diagnosis of simulations by the Weather Research and Forecasting (WRF) Model  

SciTech Connect

To aid in improving model parameterizations of clouds and convection, we examine the capability of models, using explicit convection, to simulate the life cycle of tropical cloud systems in the vicinity of the ARM Tropical Western Pacific sites. The cloud life cycle is determined using a satellite cloud tracking algorithm (Boer and Ramanathan, 1997), and the statistics are compared to those of simulations using the Weather Research and Forecasting (WRF) Model. Using New York Blue, a Blue Gene/L supercomputer that is co-operated by Brookhaven and Stony Brook, simulations are run at a resolution comparable to the observations. Initial results suggest a computational paradox where, even though the size of the simulated systems are about half of that observed, their longevities are still similar. The explanation for this seeming incongruity will be explored.

Vogelmann, A.M.; Lin, W.; Cialella, A.; Luke, E.; Jensen, M.; Zhang, M.

2010-03-15T23:59:59.000Z

56

Tracking tropical cloud systems for the diagnosis of simulations by the weather research and forecasting (WRF) model  

SciTech Connect

To aid in improving model parameterizations of clouds and convection, we examine the capability of models, using explicit convection, to simulate the life cycle of tropical cloud systems in the tropical warm pool. The cloud life cycle is determined using a satellite cloud tracking algorithm (Boer and Ramanathan, J. Geophys. Res., 1997), and the statistics are compared to those of simulations using the Weather Research and Forecasting (WRF) Model. Using New York Blue, a Blue Gene/L supercomputer that is co-operated by Brookhaven and Stony Brook, simulations are run at a resolution comparable to the observations. Initial results suggest that the organization of the mesoscale convective systems is particularly sensitive to the cloud microphysics parameterization used.

Vogelmann, A.M.; Lin, W.; Cialella, A.; Luke, E. P.; Jensen, M. P.; Zhang, M. H.; Boer, E.

2010-06-27T23:59:59.000Z

57

Effect of Atlantic Meridional Overturning Circulation Changes on Tropical Atlantic Sea Surface Temperature Variability: A 2½-Layer Reduced-Gravity Ocean Model Study  

Science Journals Connector (OSTI)

Previous coupled climate model simulations reveal that a dipole-like SST pattern with cooler (warmer) temperature over the north (south) tropical Atlantic emerges in response to a slowdown of the Atlantic meridional overturning circulation (AMOC)...

Caihong Wen; Ping Chang; Ramalingam Saravanan

2010-01-01T23:59:59.000Z

58

Sensitivity of Tropical Cyclones to Parameterized Convection in the NASA GEOS5 Model  

Science Journals Connector (OSTI)

The sensitivity of tropical cyclones (TCs) to changes in parameterized convection is investigated to improve the simulation of TCs in the North Atlantic. Specifically, the impact of reducing the influence of the Relaxed Arakawa-Schubert (RAS) ...

Young-Kwon Lim; Siegfried D. Schubert; Oreste Reale; Myong-In Lee; Andrea M. Molod; Max J. Suarez

59

Downscaling CMIP5 climate models shows increased tropical cyclone activity over the 21st century  

E-Print Network (OSTI)

A recently developed technique for simulating large [O(10[superscript 4])] numbers of tropical cyclones in climate states described by global gridded data is applied to simulations of historical and future climate states ...

Emanuel, Kerry Andrew

60

Using Mesoscale Simulations to Train Statistical Models of Tropical Cyclone Intensity over Land  

Science Journals Connector (OSTI)

The decay of tropical cyclones after landfall is a key factor in estimating the extent of the hazard overland. Yet our current understanding of this decay is challenged by the low frequency of past events. Consequently, one cannot rely solely ...

Augustin Colette; Nadja Leith; Vincent Daniel; Enrica Bellone; David S. Nolan

2010-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "tropical ecosystem model" 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

A Regional OceanAtmosphere Model for Eastern Pacific Climate: Toward Reducing Tropical Biases*  

E-Print Network (OSTI)

.5°) of the ROAM enables it to capture mesoscale features, such as tropical instability waves, Central American gap these asymmetric features despite a solar radia- tion forcing at the top of the atmosphere that is zonally uniform

Wang, Yuqing

62

Environment and the Lifetime of Tropical Deep Convection in a Cloud-Permitting Regional Model Simulation  

SciTech Connect

By applying a cloud tracking algorithm to tropical convective systems simulated by a regional high resolution model, the study documents environmental conditions before and after convective systems are initiated over ocean and land by following them during their lifetime. The comparative roles of various environmental fields in affecting the lifetime of convection are also quantified. The statistics of lifetime, maximum area, propagation speed and direction of the simulated deep convection agrees well with geostationary satellite observations. Over ocean, convective systems enhance surface fluxes through the associated wind gusts as well as cooling and drying of the boundary layer. A significant relationship is found between the mean surface fluxes during their lifetime and the longevity of the systems which in turn is related to the initial intensity of the moist updraft and to a lesser extent upper level shear. Over land, on the other hand, convective activity suppresses surface fluxes through cloud cover and the lifetime of convection is related to the upper level shear during their lifetime and strength of the heat fluxes several hours before the initiation of convection. For systems of equal lifetime, those over land are significantly more intense than those over ocean especially during early stages of their lifetime.

Hagos, Samson M.; Feng, Zhe; McFarlane, Sally A.; Leung, Lai-Yung R.

2013-08-01T23:59:59.000Z

63

Impact of Aerosols on Tropical Cyclones: An Investigation Using Convection-permitting Model Simulation  

SciTech Connect

The role of aerosols effect on two tropical cyclones over Bay of Bengal are investigated using a convection permitting model with two-moment mixed-phase bulk cloud microphysics scheme. The simulation results show the role of aerosol on the microphysical and dynamical properties of cloud and bring out the change in efficiency of the clouds in producing precipitation. The tracks of the TCs are hardly affected by the changing aerosol types, but the intensity exhibits significant sensitivity due to the change in aerosol contribution. It is also clearly seen from the analyses that higher heating in the middle troposphere within the cyclone center is in response to latent heat release as a consequence of greater graupel formation. Greater heating in the middle level is particularly noticeable for the clean aerosol regime which causes enhanced divergence in the upper level which, in turn, forces the lower level convergence. As a result, the cleaner aerosol perturbation is more unstable within the cyclone core and produces a more intense cyclone as compared to other two perturbations of aerosol. All these studies show the robustness of the concept of TC weakening by storm ingestion of high concentrations of CCN. The consistency of these model results gives us confidence in stating there is a high probability that ingestion of high CCN concentrations in a TC will lead to weakening of the storm but has little impact on storm direction. Moreover, as pollution is increasing over the Indian sub-continent, this study suggests pollution may be weakening TCs over the Bay of Bengal.

Hazra, Anupam; Mukhopadhyay, P.; Taraphdar, Sourav; Chen, J. P.; Cotton, William R.

2013-07-16T23:59:59.000Z

64

Tropical forest responses to increasing [CO2]: current knowledge and opportunities for future research  

SciTech Connect

Elevated atmospheric [CO2] (ca) will undoubtedly affect the metabolism of tropical forests worldwide; however, critical aspects of how tropical forests will respond remain largely unknown. Here we review the current state of knowledge about physiological and ecological responses, with the aim of providing a framework that can help to guide future experimental research. Modelling studies have indicated that elevated ca can potentially stimulate photosynthesis more in the tropics than at higher latitudes, because suppression of photorespiration by elevated ca increases with temperature. However, canopy leaves in tropical forests could also potentially reach a high temperature threshold under elevated ca that will moderate the rise in photosynthesis. Belowground responses, including fine root production, nutrient foraging, and soil organic matter processing, will be especially important to the integrated ecosystem response to elevated CO2. Water-use efficiency will increase as ca rises, potentially impacting upon soil moisture status and nutrient availability. Recruitment may be differentially altered for some functional groups, potentially decreasing ecosystem carbon storage. Whole-forest CO2 enrichment experiments are urgently needed to test predictions of tropical forest functioning under elevated ca. Smaller scale experiments in the understory and in gaps would also be informative, and could provide stepping stones toward stand-scale manipulations.

Cernusak, Lucas [Australian National University, Canberra, Australia; Winter, Klaus [Smithsonian Tropical Research Institute; Dalling, James [University of Illinois, Urbana-Champaign; Holtum, Joseph [James Cook University; Jaramillo, Carlos [Smithsonian Tropical Research Institute; Korner, Christian [University of Basel; Leakey, Andrew D.B. [University of Illinois; Norby, Richard J [ORNL; Poulter, Benjamin [Laboratoire des Sciences du Climat et de l'Environement, France; Turner, Benjamin [Smithsonian Tropical Research Institute; Wright, S. Joseph [Smithsonian Tropical Research Institute

2013-01-01T23:59:59.000Z

65

Diagnosing Forecast Errors in Tropical Cyclone Motion  

Science Journals Connector (OSTI)

This paper reports on the development of a diagnostic approach that can be used to examine the sources of numerical model forecast error that contribute to degraded tropical cyclone (TC) motion forecasts. Tropical cyclone motion forecasts depend ...

Thomas J. Galarneau Jr.; Christopher A. Davis

2013-02-01T23:59:59.000Z

66

Methane Fluxes Between Terrestrial Ecosystems and the Atmosphere at Northern High Latitudes During the Past Century: A retrospective analysis with a process-based biogeochemistry model  

E-Print Network (OSTI)

We develop and use a new version of the Terrestrial Ecosystem Model (TEM) to study how rates of methane (CH4) emissions and consumption in high-latitude soils of the Northern Hemisphere have changed over the past century ...

Zhuang, Qianlai.

67

The Political Economy of Deforestation in the Tropics  

E-Print Network (OSTI)

Tropical deforestation accounts for almost one-fifth of greenhouse gas emissions and threatens the world’s most diverse ecosystems. Much of this deforestation is driven by illegal logging. We use novel satellite data that ...

Burgess, Robin

68

ReuseSEEM: an approach to support the definition, modeling, and analysis of software ecosystems  

Science Journals Connector (OSTI)

Software Engineering (SE) community has discussed economic and social issues as a challenge for the next years. Companies and organizations have directly (or not) opened up their software platforms and assets to others, including partners and 3rd party ... Keywords: Conceptual Map, Domain, Software Ecosystems, Software Reuse

Rodrigo Pereira dos Santos

2014-05-01T23:59:59.000Z

69

Testing the Performance of Tropical Cyclone Genesis Indices in Future Climates Using the HiRAM Model  

Science Journals Connector (OSTI)

Tropical cyclone genesis indices (TCGIs) are functions of the large-scale environment that are designed to be proxies for the probability of tropical cyclone (TC) genesis. While the performance of TCGIs in the current climate can be assessed by ...

Suzana J. Camargo; Michael K. Tippett; Adam H. Sobel; Gabriel A. Vecchi; Ming Zhao

2014-12-01T23:59:59.000Z

70

Tropical Cyclone Simulation and Response to CO2 Doubling in the GFDL CM2.5 High-Resolution Coupled Climate Model  

Science Journals Connector (OSTI)

Global tropical cyclone (TC) activity is simulated by the Geophysical Fluid Dynamics Laboratory (GFDL) Climate Model, version 2.5 (CM2.5), which is a fully coupled global climate model with a horizontal resolution of about 50 km for the atmosphere ...

Hyeong-Seog Kim; Gabriel A. Vecchi; Thomas R. Knutson; Whit G. Anderson; Thomas L. Delworth; Anthony Rosati; Fanrong Zeng; Ming Zhao

2014-11-01T23:59:59.000Z

71

Influence of Agro-Ecosystem Modeling Approach on the Greenhouse Gas Profiles of Wheat-Derived Biopolymer Products  

Science Journals Connector (OSTI)

An approach is presented to include a wider range of factors involved in the nitrogen and carbon cycles in agro-ecosystems than is typical of many Life Cycle Assessments (LCAs) of agriculture-based products. ... Life cycle assessment (LCA) has been used to evaluate the cradle-to-grave environmental impacts of agriculture-based products since the late 1990s. ... When the difference in GWP100 scores between agriculture-based and petrochemical-based products were small, the N2O modeling approach and specific field modeled can make a difference (e.g., display board case study) and the use of DNDC model can increase confidence in the LCA findings. ...

Miao Guo; ChangSheng Li; J. Nigel B. Bell; Richard J. Murphy

2011-11-30T23:59:59.000Z

72

Using Satellite Ocean Color Data to Derive an Empirical Model for the Penetration Depth of Solar Radiation (Hp) in the Tropical Pacific Ocean  

E-Print Network (OSTI)

Radiation (Hp) in the Tropical Pacific Ocean RONG-HUA ZHANG State Key Laboratory of Satellite OceanUsing Satellite Ocean Color Data to Derive an Empirical Model for the Penetration Depth of Solar Environment Dynamics, Second Institute of Oceanography, State Oceanic Administration, Hangzhou, Zhejiang

Chen, .Dake

73

Loss of functionally unique species may gradually undermine ecosystems  

Science Journals Connector (OSTI)

...as hysteresis [43]. This will make restoration of ecosystem services, whether for economic or aesthetic...interactions in a Caribbean coral reef ecosystem. In Trophic models of aquatic ecosystems. ICLARM Conference Proceedings 26, Metro...

2011-01-01T23:59:59.000Z

74

Marine regime shifts: drivers and impacts on ecosystems services  

Science Journals Connector (OSTI)

...function of marine ecosystems [1,2]. A regime...of terrestrial and aquatic ecosystems, including lakes...on European marine ecosystems: observations, expectations...Threshold models in restoration and conservation...

2015-01-01T23:59:59.000Z

75

The Impact of Tropical Storm Paul (1999) on the Motion and Rainfall Associated with Tropical Storm Rachel (1999) near Taiwan  

Science Journals Connector (OSTI)

A heavy rainfall event associated with the passage of Tropical Storm Rachel (1999) over southern Taiwan was studied in which a conceptual model was proposed. In the model, Tropical Storm Paul (1999) plays an important role in impeding the ...

Chun-Chieh Wu; Kevin K. W. Cheung; Jan-Huey Chen; Cheng-Chuan Chang

2010-05-01T23:59:59.000Z

76

NPP Tropical Forest: Chamela, Mexico  

NLE Websites -- All DOE Office Websites (Extended Search)

Chamela, Mexico, 1982-1995 Chamela, Mexico, 1982-1995 [PHOTOGRAPH] Photograph: Litter trap and throughfall collector in the Chamela forest (click on the photo to view a series of images from this site) Data Citation Cite this data set as follows: Maass, M., and A. Martinez-Yrizar. 2001. NPP Tropical Forest: Chamela, Mexico, 1982-1995. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. Description Net primary productivity (NPP) of a tropical dry deciduous forest was estimated, based on the integration of ecosystem data obtained in various years between 1982 and 1995, at the Chamela Biological Station of the National Autonomous University of Mexico (UNAM). The Biosphere Reserve Chamela-Cuixmala, Jalisco, is situated near the

77

Testing, Model Simulations of the Thermocline Depth Variability in the Tropical Atlantic from 1982 through 1984  

Science Journals Connector (OSTI)

The multivariate model toning procedure of Frankignoul et al. has been extended to the general time-series case, thus allowing to test ocean model ability at simulating the interannual variability. The method aims at distinguishing between model ...

Pascale Braconnot; Claude Frankignoul

1993-04-01T23:59:59.000Z

78

Tropical and subtropical cloud transitions in weather and climate prediction models: the GCSS/WGNE Pacific Cross-Section Intercomparison (GPCI)  

SciTech Connect

A model evaluation approach is proposed where weather and climate prediction models are analyzed along a Pacific Ocean cross-section, from the stratocumulus regions off the coast of California, across the shallow convection dominated trade-winds, to the deep convection regions of the ITCZ: the GCSS/WGNE Pacific Cross-section Intercomparison (GPCI). The main goal of GPCI is to evaluate, and help understand and improve the representation of tropical and sub-tropical cloud processes in weather and climate prediction models. In this paper, a detailed analysis of cloud regime transitions along the cross-section from the sub-tropics to the tropics for the season JJA of 1998 is presented. This GPCI study confirms many of the typical weather and climate prediction model problems in the representation of clouds: underestimation of clouds in the stratocumulus regime by most models with the corresponding consequences in terms of shortwave radiation biases; overestimation of clouds by the ECMWF Re-Analysis (ERA40) in the deep tropics (in particular) with the corresponding impact in the outgoing longwave radiation; large spread between the different models in terms of cloud cover, liquid water path and shortwave radiation; significant differences between the models in terms of vertical crosssections of cloud properties (in particular), vertical velocity and relative humidity. An alternative analysis of cloud cover mean statistics is proposed where sharp gradients in cloud cover along the GPCI transect are taken into account. This analysis shows that the negative cloud bias of some models and ERA40 in the stratocumulus regions (as compared to ISCCP) is associated not only with lower values of cloud cover in these regimes, but also with a stratocumulus-to-cumulus transition that occurs too early along the trade-wind Lagrangian trajectory. Histograms of cloud cover along the cross-section differ significantly between models. Some models exhibit a quasi-bimodal structure with cloud cover being either very large (close to 100%) or very small, while other models show a more continuous transition. The ISCCP observations suggest that reality is in-between these two extreme examples. These different patterns reflect the diverse nature of the cloud, boundary layer, and convection parameterizations in the participating weather and climate prediction models.

Teixeira, J.; Cardoso, S.; Bonazzola, M.; Cole, Jason N.; DelGenio, Anthony D.; DeMott, C.; Franklin, A.; Hannay, Cecile; Jakob, Christian; Jiao, Y.; Karlsson, J.; Kitagawa, H.; Koehler, M.; Kuwano-Yoshida, A.; LeDrian, C.; Lock, Adrian; Miller, M.; Marquet, P.; Martins, J.; Mechoso, C. R.; Meijgaard, E. V.; Meinke, I.; Miranda, P.; Mironov, D.; Neggers, Roel; Pan, H. L.; Randall, David A.; Rasch, Philip J.; Rockel, B.; Rossow, William B.; Ritter, B.; Siebesma, A. P.; Soares, P.; Turk, F. J.; Vaillancourt, P.; Von Engeln, A.; Zhao, M.

2011-11-01T23:59:59.000Z

79

Soil carbon sensitivity to temperature and carbon use efficiency compared across microbial-ecosystem models  

E-Print Network (OSTI)

, accounting for the response of microbial communities to environmental parameters in Earth system models may

German, Donovan P.

80

Comprehensive ecosystem model-experiment synthesis using multiple datasets at two temperate forest free-air CO2 enrichment experiments: model performance and compensating biases  

SciTech Connect

Free Air CO2 Enrichment (FACE) experiments provide a remarkable wealth of data to test the sensitivities of terrestrial ecosystem models (TEMs). In this study, a broad set of 11 TEMs were compared to 22 years of data from two contrasting FACE experiments in temperate forests of the south eastern US the evergreen Duke Forest and the deciduous Oak Ridge forest. We evaluated the models' ability to reproduce observed net primary productivity (NPP), transpiration and Leaf Area index (LAI) in ambient CO2 treatments. Encouragingly, many models simulated annual NPP and transpiration within observed uncertainty. Daily transpiration model errors were often related to errors in leaf area phenology and peak LAI. Our analysis demonstrates that the simulation of LAI often drives the simulation of transpiration and hence there is a need to adopt the most appropriate of hypothesis driven methods to simulate and predict LAI. Of the three competing hypotheses determining peak LAI (1) optimisation to maximise carbon export, (2) increasing SLA with canopy depth and (3) the pipe model the pipe model produced LAI closest to the observations. Modelled phenology was either prescribed or based on broader empirical calibrations to climate. In some cases, simulation accuracy was achieved through compensating biases in component variables. For example, NPP accuracy was sometimes achieved with counter-balancing biases in nitrogen use efficiency and nitrogen uptake. Combined analysis of parallel measurements aides the identification of offsetting biases; without which over-confidence in model abilities to predict ecosystem function may emerge, potentially leading to erroneous predictions of change under future climates.

Walker, Anthony P [ORNL] [ORNL; Hanson, Paul J [ORNL] [ORNL; DeKauwe, Martin G [Macquarie University] [Macquarie University; Medlyn, Belinda [Macquarie University] [Macquarie University; Zaehle, S [Max Planck Institute for Biogeochemistry] [Max Planck Institute for Biogeochemistry; Asao, Shinichi [Colorado State University, Fort Collins] [Colorado State University, Fort Collins; Dietze, Michael [University of Illinois, Urbana-Champaign] [University of Illinois, Urbana-Champaign; Hickler, Thomas [Goethe University, Frankfurt, Germany] [Goethe University, Frankfurt, Germany; Huntinford, Chris [Centre for Ecology and Hydrology, Wallingford, United Kingdom] [Centre for Ecology and Hydrology, Wallingford, United Kingdom; Iversen, Colleen M [ORNL] [ORNL; Jain, Atul [University of Illinois, Urbana-Champaign] [University of Illinois, Urbana-Champaign; Lomas, Mark [University of Sheffield] [University of Sheffield; Luo, Yiqi [University of Oklahoma] [University of Oklahoma; McCarthy, Heather R [Duke University] [Duke University; Parton, William [Colorado State University, Fort Collins] [Colorado State University, Fort Collins; Prentice, I. Collin [Macquarie University] [Macquarie University; Thornton, Peter E [ORNL] [ORNL; Wang, Shusen [Canada Centre for Remote Sensing (CCRS)] [Canada Centre for Remote Sensing (CCRS); Wang, Yingping [CSIRO Marine and Atmospheric Research] [CSIRO Marine and Atmospheric Research; Warlind, David [Lund University, Sweden] [Lund University, Sweden; Weng, Ensheng [University of Oklahoma, Norman] [University of Oklahoma, Norman; Warren, Jeffrey [ORNL] [ORNL; Woodward, F. Ian [University of Sheffield] [University of Sheffield; Oren, Ram [Duke University] [Duke University; Norby, Richard J [ORNL] [ORNL

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "tropical ecosystem model" 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

Diurnal Cycle of Precipitation in the Tropics Simulated in a Global Cloud-Resolving Model  

Science Journals Connector (OSTI)

This study analyzes the diurnal cycle of precipitation simulated in a global cloud-resolving model (GCRM) named the Nonhydrostatic Icosahedral Atmospheric Model (NICAM). A 30-day integration of NICAM successfully simulates the precipitation ...

Tomonori Sato; Hiroaki Miura; Masaki Satoh; Yukari N. Takayabu; Yuqing Wang

2009-09-01T23:59:59.000Z

82

Agent-based modeling of the effects of social norms on enrollment in payments for1 ecosystem services2  

E-Print Network (OSTI)

norms5 8,304 words6 1Center for International Development, Kennedy School of Government, Harvard7 2 Abstract19 Conservation investments are increasingly being implemented through payments for20 ecosystem services (PES) for the protection and restoration of ecosystem services around21 the world

83

Annual Adjustment of the Thermocline in the Tropical Pacific Ocean  

Science Journals Connector (OSTI)

In this paper the amplitude-phase characteristics of the annual adjustment of the thermocline in the entire tropical Pacific Ocean are described and numerical experiments with a tropical ocean model are performed to assess the roles of the major ...

Bin Wang; Renguang Wu; Roger Lukas

2000-02-01T23:59:59.000Z

84

Downscaling CMIP5 climate models shows increased tropical cyclone activity over the 21st century  

E-Print Network (OSTI)

of historical and future climate states simulated by six Coupled Model Intercomparison Project 5 (CMIP5) global energy of the subcloud layer. On time scales larger than that characterizing the thermal equilibration of greater intensity. Calculations with a single-column model (4) confirm that increasing greenhouse gas

Rothman, Daniel

85

Linkages between leaf traits and productivity in two resource-limited ecosystems   

E-Print Network (OSTI)

leaf to the ecosystem level, a step needed to address the effect changes in resources will have on the seasonally dry tropical forest and grasslands, which represent a significant fraction of the total global carbon storage....

Chinchilla Soto, Isabel

2014-06-30T23:59:59.000Z

86

Assessing Ecosystem Effects of Reservoir Operations Using Food Web–Energy Transfer and Water Quality Models  

Science Journals Connector (OSTI)

We investigated the effects on the reservoir food web of a new temperature control device (TCD) on the dam at Shasta Lake, California. We followed a linked modeling approach that used a specialized reservoir wate...

Laurel Saito; Brett M. Johnson; John Bartholow; R. Blair Hanna

2001-03-01T23:59:59.000Z

87

Geomorphology and ecohydrology of water-limited ecosystems : a modeling approach  

E-Print Network (OSTI)

The role of vegetation in shaping landforms and how these landforms respond to disturbances are the subjects of this work. A numerical model is developed to help develop a mechanistic understanding of the hydrological, ...

Collins, Daniel B. G. (Daniel Benjamin Gardiner), 1976-

2006-01-01T23:59:59.000Z

88

ARM - Field Campaign - Year of Tropical Convection (YOTC)  

NLE Websites -- All DOE Office Websites (Extended Search)

govCampaignsYear of Tropical Convection (YOTC) govCampaignsYear of Tropical Convection (YOTC) Campaign Links Year of Tropical Convection Website Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign : Year of Tropical Convection (YOTC) 2008.05.01 - 2010.04.30 Lead Scientist : Sally McFarlane Description Example of a sonde profile available from the ARM Archive The realistic representation of tropical convection in global atmospheric models is a long-standing challenge for weather and global climate models. The lack of fundamental knowledge in this area causes difficulties in modeling and predicting prominent phenomena of the tropical atmosphere such as the inter-tropical convergence zone (ITCZ), El-Nino/Southern Oscillation (ENSO), monsoons, the Madden-Julian Oscillation (MJO), tropical cyclones,

89

Study of Multi-Scale Cloud Processes Over the Tropical Western Pacific Using Cloud-Resolving Models Constrained by Satellite Data  

SciTech Connect

Clouds in the tropical western Pacific are an integral part of the large scale environment. An improved understanding of the multi-scale structure of clouds and their interactions with the environment is critical to the ARM (Atmospheric Radiation Measurement) program for developing and evaluating cloud parameterizations, understanding the consequences of model biases, and providing a context for interpreting the observational data collected over the ARM Tropical Western Pacific (TWP) sites. Three-dimensional cloud resolving models (CRMs) are powerful tools for developing and evaluating cloud parameterizations. However, a significant challenge in using CRMs in the TWP is that the region lacks conventional data, so large uncertainty exists in defining the large-scale environment for clouds. This project links several aspects of the ARM program, from measurements to providing improved analyses, and from cloud-resolving modeling to climate-scale modeling and parameterization development, with the overall objective to improve the representations of clouds in climate models and to simulate and quantify resolved cloud effects on the large-scale environment. Our objectives will be achieved through a series of tasks focusing on the use of the Weather Research and Forecasting (WRF) model and ARM data. Our approach includes: -- Perform assimilation of COSMIC GPS radio occultation and other satellites products using the WRF Ensemble Kalman Filter assimilation system to represent the tropical large-scale environment at 36 km grid resolution. This high-resolution analysis can be used by the community to derive forcing products for single-column models or cloud-resolving models. -- Perform cloud-resolving simulations using WRF and its nesting capabilities, driven by the improved regional analysis and evaluate the simulations against ARM datasets such as from TWP-ICE to optimize the microphysics parameters for this region. A cirrus study (Mace and co-authors) already exists for TWP-ICE using satellite and ground-based observations. -- Perform numerical experiments using WRF to investigate how convection over tropical islands in the Maritime Continent interacts with large-scale circulation and affects convection in nearby regions. -- Evaluate and apply WRF as a testbed for GCM cloud parameterizations, utilizing the ability of WRF to run on multiple scales (from cloud resolving to global) to isolate resolution and physics issues from dynamical and model framework issues. Key products will be disseminated to the ARM and larger community through distribution of data archives, including model outputs from the data assimilation products and cloud resolving simulations, and publications.

Dudhia, Jimy

2013-03-12T23:59:59.000Z

90

Stoichiometry of nutrient recycling by vertebrates in a tropical stream: linking species identity and  

E-Print Network (OSTI)

REPORT Stoichiometry of nutrient recycling by vertebrates in a tropical stream: linking species in recycling nutrients, thus providing a mechanism for how animal species identity mediates ecosystem processes) recycled nitrogen (N) and phosphorus (P) in a tropical stream supports stoichiometry theory. Mass

Flecker, Alex

91

Ecosystems and Sustainable Development  

E-Print Network (OSTI)

Ecosystems and Sustainable Development Editors: J.L. Uso,Ecosystems and Sustainable Development. Southhampton, UK:ISBN: 1-85312-502-4. Sustainable development research is a

Tufford, Dan

1999-01-01T23:59:59.000Z

92

Modeling of hydroecological feedbacks predicts distinct classes of landscape pattern, process, and restoration potential in shallow aquatic ecosystems  

Science Journals Connector (OSTI)

It is widely recognized that interactions between vegetation and flow cause the emergence of channel patterns that are distinct from the standard Schumm classification of river channels. Although landscape pattern is known to be linked to ecosystem services such as habitat provision, pollutant removal, and sustaining biodiversity, the mechanisms responsible for the development and stability of different landscape patterns in shallow, vegetated flows have remained poorly understood. Fortunately, recent advances have made possible large-scale models of flow through vegetated environments that can be run over a range of environmental variables and over timescales of millennia. We describe a new, quasi-3D cellular automata model that couples simulations of shallow-water flow, bed shear stresses, sediment transport, and vegetation dynamics in an efficient manner. That efficiency allowed us to apply the model widely in order to determine how different hydroecological feedbacks control landscape pattern and process in various types of wetlands and floodplains. Distinct classes of landscape pattern were uniquely associated with specific types of allogenic and autogenic drivers in wetland flows. Regular, anisotropically patterned wetlands were dominated by allogenic processes (i.e., processes driven by periodic high water levels and flow velocities that redistribute sediment), relative to autogenic processes (e.g., vegetation production, peat accretion, and gravitational erosion). These anistropically patterned wetlands are therefore particularly prone to hydrologic disturbance. Other classes of wetlands that emerged from simulated interactions included maze-patterned, amorphous, and topographically noisy marshes, open marsh with islands, banded string-pool sequences perpendicular to flow, parallel deep and narrow channels flanked by marsh, and ridge-and-slough patterned marsh oriented parallel to flow. Because vegetation both affects and responds to the balance between the transport capacity of the flow and sediment supply, these vegetated systems exhibit a feedback that is not dominant in most rivers. Consequently, unlike in most rivers, it is not possible to predict the “channel pattern” of a vegetated landscape based only on discharge characteristics and sediment supply; the antecedent vegetation pattern and vegetation dynamics must also be known. In general, the stability of different wetland pattern types is most strongly related to factors controlling the erosion and deposition of sediment at vegetation patch edges, the magnitude of sediment redistribution by flow, patch elevation relative to water level, and the variability of erosion rates in vegetation patches with low flow-resistance. As we exemplify in our case-study of the Everglades ridge and slough landscape, feedback between flow and vegetation also causes hysteresis in landscape evolution trajectories that will affect the potential for landscape restoration. Namely, even if the hydrologic conditions that historically produced higher flows are restored, degraded portions of the ridge and slough landscape are unlikely to revert to their former patterning. As wetlands and floodplains worldwide become increasingly threatened by climate change and urbanization, the greater mechanistic understanding of landscape pattern and process that our analysis provides will improve our ability to forecast and manage the behavior of these ecosystems.

Laurel G. Larsen; Judson W. Harvey

2011-01-01T23:59:59.000Z

93

The combined effects of beta-shear and environmental shear on a dry tropical cyclone in a numerical model  

E-Print Network (OSTI)

wind balance is analyzed in this study (Mallen et al. 2005). The vortex is generated from a number, FL 1. INTRODUCTION High values of vertical wind shear have been shown to inhibit tropical cyclone (TC have demonstrated that shear generates a tilt in TC core, resulting in persistent wavenumber-1

Nolan, David S.

94

Carbon dynamics of terrestrial ecosystems on the Tibetan Plateau  

E-Print Network (OSTI)

RESEARCH PAPER Carbon dynamics of terrestrial ecosystems on the Tibetan Plateau during the 20th tundra to evergreen tropics. Its soils are dominated by permafrost and are rich in organic carbon. Its, the carbon dynamics of the Tibetan Plateau have not been well quantified under changes of climate and per

Xiao, Jingfeng

95

Comparing Tropical Forest Projections from Two Generations of Hadley Centre Earth System Models, HadGEM2-ES and HadCM3LC  

Science Journals Connector (OSTI)

Future changes in atmospheric greenhouse gas concentrations and associated influences on climate could affect the future sustainability of tropical forests. The authors report on tropical forest projections from the new Hadley Centre Global ...

Peter Good; Chris Jones; Jason Lowe; Richard Betts; Nicola Gedney

2013-01-01T23:59:59.000Z

96

E-Print Network 3.0 - aerobic microbial ecosystems Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

and Starch Glucose Complex anaerobic... 12;Microbial Systems as Model Ecosystems P C R Energy Heat ... Source: Vallino, Joseph J. - Ecosystems Center, Marine Biological...

97

An Ecosystem Report on the Panama Canal: Monitoring the Status of the Forest Communities and the Watershed  

Science Journals Connector (OSTI)

In 1996, the Smithsonian Tropical Research Institute and the Republic of Panama's Environmental Authority, with support fromthe United ... comprehensive program to monitor the ecosystem of the Panama Canal waters...

Roberto Ibáñez; Richard Condit; George Angehr…

2002-11-01T23:59:59.000Z

98

Water Vapor Budget in a Developing Tropical Cyclone and Its Implication for Tropical Cyclone Formation  

Science Journals Connector (OSTI)

Evolution of the water vapor budget from the tropical wave stage to the tropical cyclone stage is examined using a high-resolution numerical model simulation. The focus is on a time window from 27 h prior to genesis to 9 h after genesis, and the ...

Cody Fritz; Zhuo Wang

2014-11-01T23:59:59.000Z

99

EMSL: Science: Terrestrial & Subsurface Ecosystems  

NLE Websites -- All DOE Office Websites (Extended Search)

Terrestrial & Subsurface Ecosystems Terrestrial & Subsurface Ecosystems Terrestrial and Subsurface Ecosystems logo Visualization of CFD-simulated fluid velocities within a single pore space between randomly packed spherical grains Visualization of CFD-simulated fluid velocities within a single pore space between randomly packed spherical grains. The Terrestrial and Subsurface Ecosystems Science Theme focuses on the dynamics of nutrients, metabolites, and contaminants at biogeochemical interfaces in heterogeneous environments across multiple scales. By providing a mechanistic understanding of biogeochemical and microbial processes in soils and the subsurface, and linking those processes via pore-scale hydrological models, EMSL can improve strategies for sustainable solutions to contaminant attenuation, remediation and biogeochemical

100

Tropical forest responses to increasing atmospheric CO2: current knowledge and opportunities for future research  

E-Print Network (OSTI)

their representation in Earth system models. Tropical forests play a significant role in the global carbon cycle

Bermingham, Eldredge

Note: This page contains sample records for the topic "tropical ecosystem model" 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

The IC Brazil ecosystem  

Science Journals Connector (OSTI)

Brazilian Government has done a strong effort to develop the Microelectronics area in Brazil. An ecosystem of communities interested to rethink the insertion of Brazil in the important market of semiconductors. Important questions should be considered ... Keywords: IC projects, IT ecosystems and e-government, collaborative ecosystems, education, semiconductors

Oscar S. Silva Filho

2013-10-01T23:59:59.000Z

102

Contaminated Aquatic Ecosystems Restoration: A Case Study  

Science Journals Connector (OSTI)

We use Decision Analysis methods to rank intervention strategies after contamination by radionuclides of an aquatic ecosystem. We assume certainty since the validation of models used to quantify impacts of cou...

E. Gallego; S. Ríos-Insua; A. Mateos; D. Ríos Insua

1998-01-01T23:59:59.000Z

103

Tracking Scheme Dependence of Simulated Tropical Cyclone Response to Idealized Climate Simulations  

Science Journals Connector (OSTI)

Future tropical cyclone activity is a topic of great scientific and societal interest. In the absence of a climate theory of tropical cyclogenesis, general circulation models are the primary tool available for investigating the issue. However, the ...

Michael Horn; Kevin Walsh; Ming Zhao; Suzana J. Camargo; Enrico Scoccimarro; Hiroyuki Murakami; Hui Wang; Andrew Ballinger; Arun Kumar; Daniel A. Shaevitz; Jeffrey A. Jonas; Kazuyoshi Oouchi

104

Back–to–the–future: a fresh policy initiative for fisheries and a restoration ecology for ocean ecosystems  

Science Journals Connector (OSTI)

...developments in ecosystem modelling, and...science-based restoration ecology aimed...fisheries and aquatic ecosystems (Pitcher et al...process for the restoration of fisheries and aquatic ecosystems. (Modified from...

2005-01-01T23:59:59.000Z

105

Evaluating regional cloud-permitting simulations of the WRF model for the Tropical Warm Pool International Cloud Experiment (TWP-ICE, Darwin 2006)  

SciTech Connect

Data from the Tropical Warm Pool I5 nternational Cloud Experiment (TWPICE) were used to evaluate two suites of high-resolution (4-7 km, convection-resolving) simulations of the Advanced Research Weather Research and Forecasting (WRF) model with a focus on the performance of different cloud microphysics (MP) schemes. The major difference between these two suites of simulations is with and without the reinitializing process. Whenreinitialized every three days, the four cloud MP schemes evaluated can capture the general profiles of cloud fraction, temperature, water vapor, winds, and cloud liquid and ice water content (LWC and IWC, respectively). However, compared with surface measurements of radiative and moisture fluxes and satellite retrieval of top-of-the-atmosphere (TOA) fluxes, disagreements do exist. Large discrepancies with observed LWC and IWC and derived radiative heating profiles can be attributed to both the limitations of the cloud property retrievals and model performance. The simulated precipitation also shows a wide range of uncertainty as compared with observations, which could be caused by the cloud MP schemes, complexity of land-sea configuration, and the high temporal and spatial variability. In general, our result indicates the importance of large-scale initial and lateral boundary conditions in re-producing basic features of cloudiness and its vertical structures. Based on our case study, we find overall the six-hydrometer single-moment MP scheme(WSM6) [Hong and Lim, 2006] in the WRF model si25 mulates the best agree- ment with the TWPICE observational analysis.

Wang, Yi; Long, Charles N.; Leung, Lai-Yung R.; Dudhia, Jimy; McFarlane, Sally A.; Mather, James H.; Ghan, Steven J.; Liu, Xiaodong

2009-11-05T23:59:59.000Z

106

A model for the contribution of macrophyte-derived organic carbon in harvested tidal freshwater marshes to surrounding estuarine and oceanic ecosystems and its response to global warming  

Science Journals Connector (OSTI)

Abstract The tidal freshwater marshes dominated by Phragmites australis (common reed) in the Chongxi Wetland are important components of the Yangtze River estuary in China. The litter from P. australis is exported to the surrounding estuarine area and the sea with the tidal flushing in the form of plant residue, particulate organic matter, and dissolved organic matter and is an important organic carbon resource of the East China Sea. A model was constructed using STELLA® software (version 9.1.3) to simulate the contribution of macrophyte-derived organic carbon to surrounding estuary and ocean ecosystems. The model is based on the monitoring and observational data from field surveys and published information on the Chongxi Wetland from 2008 to 2011, and the response of the total organic carbon flowing out of the wetland to global changes was also predicted in conditions of plant shoots that were annually harvested in winter. The results demonstrate the following: (1) the annual contributed organic carbon is 891 g C m?2, of which 612 g C m?2 flows out of the wetland directly as plant residue; (2) total organic carbon continually increases after a short decrease at the start of April of 2010, retains a high value from mid-July to mid-November and rapidly decreases to approximately zero during the harvest of the aboveground plant organs; and (3) accumulated annual organic carbon contributions to the surrounding estuarine and oceanic ecosystems are predicted to increase as the global average temperature rises, and the sea level increases.

Jiarui Zhang; Sven E. Jørgensen; Jianjian Lu; Søren N. Nielsen; Qiang Wang

2014-01-01T23:59:59.000Z

107

CAPE in Tropical Cyclones  

E-Print Network (OSTI)

1999) found that lightning flash frequency was proportionallightning distribution in tropical cyclones. The ratio of downshear to upshear flasheslightning from 100-300 km radii found by Corbosiero and Molinari (2003), with larger CAPE associated with greater flash

Molinari, J.

2014-01-01T23:59:59.000Z

108

Using wind power to prevent tropical cyclone development  

Science Journals Connector (OSTI)

A rough model of a tropical cyclone in the form of a spatial autooscillatory system of the spiral type is proposed. Based on this model, the kinetic energy of a cyclone is estimated and a method of preventing ...

V. I. Kaganov

2006-03-01T23:59:59.000Z

109

Consistent global responses of marine ecosystems to future climate change across the IPCC AR5 earth system models  

Science Journals Connector (OSTI)

We analyze for the first time all 16 Coupled Model Intercomparison Project Phase 5 models with explicit marine ecological modules to identify the common mechanisms involved in projected phytoplankton biomass, ...

Anna Cabré; Irina Marinov; Shirley Leung

2014-10-01T23:59:59.000Z

110

Tropical precipitation simulated by the NCAR Community Climate Model (CCM3): an evaluation based on TRMM satellite measurements  

E-Print Network (OSTI)

the TRMM Science Data and Information System; the Community Climate Model group at NCAR for developing and assistance with running CCM3; and the Program for Cli- mate Model Diagnosis and Intercomparison at Lawrence Livermore National Laboratory...

Collier, Jonathan Craig

2005-11-01T23:59:59.000Z

111

Dynamical Simulations of North Atlantic Tropical Cyclone Activity Using Observed Low-Frequency SST Oscillation Imposed on CMIP5 Model RCP4.5 SST Projections  

Science Journals Connector (OSTI)

The effects on early and late twenty-first-century North Atlantic tropical cyclone statistics resulting from imposing the patterns of maximum/minimum phases of the observed Atlantic multidecadal oscillation (AMO) onto projected sea surface ...

Timothy E. LaRow; Lydia Stefanova; Chana Seitz

2014-11-01T23:59:59.000Z

112

Ocean Barrier Layers’ Effect on Tropical Cyclone Intensification  

SciTech Connect

Improving a tropical cyclone's forecast and mitigating its destructive potential requires knowledge of various environmental factors that influence the cyclone's path and intensity. Herein, using a combination of observations and model simulations, we systematically demonstrate that tropical cyclone intensification is significantly affected by salinity-induced barrier layers, which are 'quasi-permanent' features in the upper tropical oceans. When tropical cyclones pass over regions with barrier layers, the increased stratification and stability within the layer reduce storm-induced vertical mixing and sea surface temperature cooling. This causes an increase in enthalpy flux from the ocean to the atmosphere and, consequently, an intensification of tropical cyclones. On average, the tropical cyclone intensification rate is nearly 50% higher over regions with barrier layers, compared to regions without. Our finding, which underscores the importance of observing not only the upper-ocean thermal structure but also the salinity structure in deep tropical barrier layer regions, may be a key to more skillful predictions of tropical cyclone intensities through improved ocean state estimates and simulations of barrier layer processes. As the hydrological cycle responds to global warming, any associated changes in the barrier layer distribution must be considered in projecting future tropical cyclone activity.

Balaguru, Karthik; Chang, P.; Saravanan, R.; Leung, Lai-Yung R.; Xu, Zhao; Li, M.; Hsieh, J.

2012-09-04T23:59:59.000Z

113

Quantifying the role of fire in the Earth system - Part 2: Impact on the net carbon balance of global terrestrial ecosystems for the 20th century  

SciTech Connect

Fire is the primary terrestrial ecosystem disturbance agent on a global scale. It affects carbon balance of global terrestrial ecosystems by emitting carbon to atmosphere directly and immediately from biomass burning (i.e., fire direct effect), and by changing net ecosystem productivity and land-use carbon loss in post-fire regions due to biomass burning and fire-induced vegetation mortality (i.e., fire indirect effect). Here, we provide the first quantitative assessment about the impact of fire on the net carbon balance of global terrestrial ecosystems for the 20th century, and investigate the roles of fire direct and indirect effects. This study is done by quantifying the difference between the 20th century fire-on and fire-off simulations with NCAR community land model CLM4.5 as the model platform. Results show that fire decreases net carbon gain of the global terrestrial ecosystems by 1.0 Pg C yr-1 average across the 20th century, as a results of fire direct effect (1.9 Pg C yr-1) partly offset by indirect effect (-0.9 Pg C yr-1). Fire generally decreases the average carbon gains of terrestrial ecosystems in post-fire regions, which are significant over tropical savannas and part of forests in North America and the east of Asia. The general decrease of carbon gains in post-fire regions is because fire direct and indirect effects have similar spatial patterns and the former (to decrease carbon gain) is generally stronger. Moreover, the effect of fire on net carbon balance significantly declines prior to ~1970 with trend of 8 Tg C yr-1 due to increasing fire indirect effect and increases afterward with trend of 18 Tg C yr-1 due to increasing fire direct effect.

Li, Fang; Bond-Lamberty, Benjamin; Levis, Samuel

2014-03-07T23:59:59.000Z

114

Chapter 6 - Ecosystem Services  

Science Journals Connector (OSTI)

Abstract Forested ecosystems have always provided a large suite of services that benefit human civilizations, animals, plants, and other organisms living within the Earth’s biosphere. As suggested in earlier chapters, forested ecosystems generate numerous provisioning, regulating, supporting, and cultural services. These services provide the basic building blocks of life on Earth and for human civilizations. Unfortunately, at times humans neither understand nor appreciate the regulating or supporting functions provided by ecosystems. Maintaining the health and well-being of our forested ecosystems can improve human health concerns and protect our homes from unexpected events such as floods and wildfires. Many also argue that healthy ecosystems are the foundation upon which we can build a secure future for our children and grandchildren. Managers of forests and natural resources will undoubtedly face trade-offs among ecosystem services when considering their actions. Even deciding to do nothing at all will involve the analysis of trade-offs, since some of the services provided by ecosystems include the food, shelter, and materials we may use in our normal, daily lives.

Donald L. Grebner; Pete Bettinger; Jacek P. Siry

2013-01-01T23:59:59.000Z

115

Proper orthogonal decomposition approach and error estimation of mixed finite element methods for the tropical Pacific Ocean  

E-Print Network (OSTI)

for the tropical Pacific Ocean reduced gravity model Zhendong Luo a , Jiang Zhu b , Ruiwen Wang b , I.M. Navon c Available online 8 May 2007 Abstract In this paper, the tropical Pacific Ocean reduced gravity model and the insufficient knowledge of air­sea exchange processes. The tropical Pacific Ocean reduced gravity model

Navon, Michael

116

Human behaviour and ecosystem services in sustainable farming landscapes : an agent-based model of socio-ecological systems   

E-Print Network (OSTI)

on agents’ interactions at smaller scale. This approach is better suited to understanding and modelling complex socio-ecological systems, which emerge from individual actions, and therefore for developing tools which improve policy effectiveness. In recent...

Guillem, Eléonore E.

2012-11-29T23:59:59.000Z

117

Response of a coupled ocean-ice-atmosphere model to data assimilation in the tropical zone of the Pacific Ocean  

Science Journals Connector (OSTI)

This paper deals with numerical experiments based on the coupled ECHAM-HOPE model. The results of experiments are analyzed. The initial fields for the calculations over time periods from one month to one year ...

K. P. Belyaev; N. P. Tuchkova; U. Cubash

2010-06-01T23:59:59.000Z

118

Impact of the tropopause temperature on the intensity of tropical cyclones an idealized study using a mesoscale model  

E-Print Network (OSTI)

) models TCs as heat engines, operating29 between the warm ocean and the cold tropopause and converting thermal energy to mechanical30 energy. Variations in the sea surface temperature (SST) have received much

Sobel, Adam

119

Biodiversity Conservation in Tropical Agroecosystems  

E-Print Network (OSTI)

Biodiversity Conservation in Tropical Agroecosystems A New Conservation Paradigm Ivette Perfectoa areas of the world. Although most ecologists con- cerned with biodiversity conservation would agree. This conclusion has major consequences for biodiversity con- servation in fragmented tropical forests

120

Rock-derived Micronutrient Transport in the Tropics: Molybdenum Cycling in Deeply-weathered Panama Soils  

Science Journals Connector (OSTI)

Abstract The rock-derived micronutrient Molybdenum (Mo) is important in both terrestrial and ocean ecosystems as an essential cofactor in nitrogenase, the enzyme used by microorganisms to fix atmospheric nitrogen. As global nitrogen fixation rates respond to increasing atmospheric pCO2, the weathering, transport, and availability of this micronutrient becomes essential, because Mo limitation on nitrogen fixation has been documented in diverse ecosystems, including tropical soils in Panama. Therefore, a thorough understanding of the carbon and nitrogen cycles may depend more on the availability of trace metals such as Mo than previously realized, but the weathering and cycling of these elements as they pass across ecosystem boundaries remains poorly understood. This work explores the sources and sinks of Mo in small (36-176 ha) single land cover catchments in tropical Panama. Water samples were collected from precipitation, canopy throughfall, soil water, groundwater, soil seeps, and first- order through higher-order streams. Though Mo is considered a “rock-derived” micronutrient, concentrations were higher in precipitation and shallow soil water than in the groundwater and stream waters in contact with underlying rocks and weathered saprolite. Event-based mass balance suggests that Mo is being retained within the catchment ecosystem. The source of Mo in tropical forests may have important implications as the amount of nitrogen fixation changes during tropical forest recovery from a previous land use.

Christopher B. Gardner; W. Berry Lyons; Guy Litt; Fred L. Ogden

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "tropical ecosystem model" 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

Interpretation of tropical thermocline cooling in the Indian and Pacific oceans during recent decades  

E-Print Network (OSTI)

, but also could benefit fish industry because changes in vertical structure of oceanic temperature can have substan- tial effects on marine ecosystems and fisheries (e.g., a review paper by Brill [1994]). 2. DataInterpretation of tropical thermocline cooling in the Indian and Pacific oceans during recent

Han, Weiqing

123

Analytical expressions of variability in ecosystem structure and function obtained from three-dimensional stochastic vegetation modelling  

Science Journals Connector (OSTI)

...temperature, T a, horizontal wind speed, U x , relative humidity...area for a biologically diverse system through a superposition of separate...Strahler, and CE Woodcock. 1995 A hybrid geometric optical-radiative...formulations for the partitioning of solar radiation in land surface models...

2013-01-01T23:59:59.000Z

124

Observed Characteristics of Clouds and Precipitating Systems Associated with the Tropical Circulation in Global Models and Reanalyses  

E-Print Network (OSTI)

............................................................................ 90 a. Reanalysis Datasets .................................................................. 90 b. ISCCP Cloud Regimes ............................................................. 92 c. Model Setup... FIGURE Page A-1 Annual average, zonal mean meridional mass streamfunction values for each reanalysis dataset during the 1979-2008 period ............ 144 A-2 Same as Fig. A-1, but for JJA...

Stachnik, Justin Paul

2013-03-25T23:59:59.000Z

125

Impacts of Ocean–Atmosphere Coupling on Tropical Cyclone Intensity Change and Ocean Prediction in the Australian Region  

Science Journals Connector (OSTI)

This study investigates the impact of atmosphere–ocean coupling on predicted tropical cyclone (TC) intensity change and the ocean response in the Australian region. The coupled model comprises the Australian Bureau of Meteorology’s Tropical ...

P. A. Sandery; G. B. Brassington; A. Craig; T. Pugh

2010-06-01T23:59:59.000Z

126

Glacial Cooling in the Tropics: Exploring the Roles of Tropospheric Water Vapor, Surface Wind Speed, and Boundary Layer Processes  

Science Journals Connector (OSTI)

This paper is a modeling study of possible roles for tropospheric water vapor, surface wind speed, and boundary layer processes in glacial cooling in the Tropics. The authors divide the Tropics into a region of persistent deep convection and a ...

Richard Seager; Amy C. Clement; Mark A. Cane

2000-07-01T23:59:59.000Z

127

Reduction of tropical land region precipitation variability via transpiration  

E-Print Network (OSTI)

Tropical rainforests are known to exhibit low intraseasonal precipitation variability compared with oceanic areas with similar mean precipitation in observations and models. In the present study, the potential role of ...

Lee, Jung-Eun

128

Quantifying Environmental Drivers of Future Tropical Forest Extent  

Science Journals Connector (OSTI)

Future changes in atmospheric greenhouse gas concentrations, and their associated influences on climate, will affect the future sustainability of tropical forests. While dynamic global vegetation models (DGVMs) represent the processes by which ...

Peter Good; Chris Jones; Jason Lowe; Richard Betts; Ben Booth; Chris Huntingford

2011-03-01T23:59:59.000Z

129

Tropical Limit in Statistical Physics  

E-Print Network (OSTI)

Tropical limit for macroscopic systems in equilibrium defined as the formal limit of Boltzmann constant k going to 0 is discussed. It is shown that such tropical limit is well-adapted to analyse properties of systems with highly degenerated energy levels, particularly of frustrated systems like spin ice and spin glasses. Tropical free energy is a piecewise linear function of temperature, tropical entropy is a piecewise constant function and the system has energy for which tropical Gibbs' probability has maximum. Properties of systems in the points of jump of entropy are studied. Systems with finite and infinitely many energy levels and phenomena of limiting temperatures are discussed.

M. Angelelli; B. Konopelchenko

2015-02-04T23:59:59.000Z

130

Water and tropical agriculture  

Science Journals Connector (OSTI)

... covers what is potentially an important field. The author has spent six years lecturing in Tanzania, so he has first-hand experience of the problems and is well qualified to ... depends largely on the available radiation, but there is no discussion of the distribution of solar radiation in the tropical world. Given an adequate water supply, plant yields depend to ...

J. G. Lockwood

1977-09-08T23:59:59.000Z

131

Tropical Cyclone Eye Thermodynamics  

Science Journals Connector (OSTI)

In intense tropical cyclones, sea level pressures at the center are 50–100 hPa lower than outside the vortex, but only 10–30 hPa of the total pressure fall occurs inside the eye between the eyewall and the center. Warming by dry subsidence ...

H. E. Willoughby

1998-12-01T23:59:59.000Z

132

Response of tropical sea surface temperature, precipitation, and tropical cyclone-related variables to changes in global and local forcing  

E-Print Network (OSTI)

A single-column model is used to estimate the equilibrium response of sea surface temperature (SST), precipitation, and several variables related to tropical cyclone (TC) activity to changes in both local and global forcing. ...

Sobel, Adam

133

Bimodality in a Monostable Climate–Ecosystem: The Role of Climate Variability and Soil Moisture Memory  

Science Journals Connector (OSTI)

The probabilistic modal response of vegetation to stochastic precipitation variability is studied in a conceptual climate–ecosystem model. It is found that vegetation can exhibit bimodality in a monostable climate–ecosystem under strong rainfall ...

Zhengyu Liu

2010-03-01T23:59:59.000Z

134

A Test of the Simulation of Tropical Convective Cloudiness by a Cloud-Resolving Model MARIO A. LOPEZ, DENNIS L. HARTMANN, PETER N. BLOSSEY, ROBERT WOOD,  

E-Print Network (OSTI)

un- certainties in projections of future climates (Bony et al. 2006; Solomon et al. 2007). Clouds solar radiation, although their effect on the net energy balance is often much less than with intense tropical convective systems are known to have long lifetimes and to cover large areas, accounting

Hartmann, Dennis

135

Innovation Ecosystem Development Initiative  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Innovation Ecosystem Development Initiative Innovation Ecosystem Development Initiative Funding Opportunity Number DE-FOA-0000356 Applicant (Legal Name) University of Utah Technology Commercialization Office Location: Salt Lake City, UT Project Title Energy Innovation Commercialization Center Proposed Action or Project Description The project proposes to create an Energy Innovation Commercialization Center at the University of Utah. The scope of work for this project is in two phases: tasks necessary to create the Center and actual commercialization and outreach to other institutions. Specific activities for Phase I for the Center startup include 1) negotiating contract, prepare correspondence, establishing website, meetings, scheduling activities, developing metrics, and designing and creating a database. Phase 2 activities for Center

136

Antarctic terrestrial ecosystems  

SciTech Connect

The Maritime and Continental Antarctic terrestrial ecosystems are considered in the context of environmental impacts - habitat destruction, alien introductions, and pollution. Four types of pollution are considered: nutrients, radionuclides, inert materials, and noxious chemicals. Their ability to recover from perturbation is discussed in the light of present scientific knowledge, and the methods used to control impacts are reviewed. It is concluded that techniques of waste disposal are still inadequate, adequate training in environmental and conservation principles for Antarctic personnel in many countries is lacking, and scientific investigations may be a much more serious threat than tourism to the integrity of these ecosystems. Some priorities crucial to future management are suggested.

Walton, D.W.H.

1987-01-01T23:59:59.000Z

137

Building sustainable ecosystem-oriented architectures  

E-Print Network (OSTI)

Currently, organizations are transforming their business processes into e-services and service-oriented architectures to improve coordination across sales, marketing, and partner channels, to build flexible and scalable systems, and to reduce integration-related maintenance and development costs. However, this new paradigm is still fragile and lacks many features crucial for building sustainable and progressive computing infrastructures able to rapidly respond and adapt to the always-changing market and environmental business. This paper proposes a novel framework for building sustainable Ecosystem- Oriented Architectures (EOA) using e-service models. The backbone of this framework is an ecosystem layer comprising several computing units whose aim is to deliver universal interoperability, transparent communication, automated management, self-integration, self-adaptation, and security to all the interconnected services, components, and devices in the ecosystem. Overall, the proposed model seeks to deliver a co...

Bassil, Youssef

2012-01-01T23:59:59.000Z

138

Is Net Ecosystem Production Equal to Ecosystem Carbon Accumulation?  

E-Print Network (OSTI)

from the gas balance at night (when GPP is zero) and then GPP is calculated from Eq. 2. This gas COMMENTARY Is Net Ecosystem Production Equal to Ecosystem Carbon Accumulation? Gary M. Lovett ABSTRACT Net ecosystem production (NEP), defined as the difference between gross primary production

Berkowitz, Alan R.

139

Innovation Ecosystem Development Initiative  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

U.S. Department of Energy Categorical Exclusion Determination Form Program or Field Office: Office of Energy Efficiency and Renewable Energy: Innovation Ecosystem Development Initiative Funding Opportunity Number DE-FOA-0000356 Applicant (Legal Name) Fraunhofer Center for Sustainable Energy Systems Location: Cambridge, MA Project Title TechBridge Energy Innovation Acceleration Program

140

Tropical Western Pacific  

NLE Websites -- All DOE Office Websites (Extended Search)

ARM-00-005 ARM-00-005 RPT(TWP)-010.006 LA-UR-004434 Tropical Western Pacific Site Science Mission Plan July - December 2000 Prepared for the U.S. Department of Energy under Contract W-7405-ENG-36 Tropical Western Pacific Project Office Atmospheric and Climate Sciences Group (EES-8) Earth and Environmental Sciences Division Los Alamos National Laboratory Los Alamos, NM 87545 This report and previous versions are available electronically at the following web sites: http://www.arm.gov/docs/sites/twp/science_plan/archive.html http://www.twppo.lanl.gov/docs/office.html 2 DISCLAIMER This report was prepared as an account of work sponsored by the United States Government. Neither the United States nor an agency thereof, nor any of their employees, makes any warranty, expresses or

Note: This page contains sample records for the topic "tropical ecosystem model" 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

Parallel ecological networks in ecosystems  

Science Journals Connector (OSTI)

...interactions|ecosystem engineers|ecological stoichiometry...organisms with their environment (Haeckel 1869...concept of ecosystems engineers (Jones et al...strong species-environment feedbacks in almost...including species-environment interactions...importance of ecosystem engineers has been recognized...

2009-01-01T23:59:59.000Z

142

Capinha et al.: Zonitoides in tropical mountain forests Susceptibility of tropical mountain forests to biological invasions  

E-Print Network (OSTI)

vegetation (e.g., Kappes, 2006; Kappes et al., 2009), and the (subsequent) use of alien plants modeling suggests that both taxa could be widely distributed in the mountains of tropical South America and Africa. Z. arboreus finds suitable climates in many places in SE Asia and especially at many conservation

Pereira, Henrique Miguel

143

Innovation Ecosystem Development Initiative  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Innovation Ecosystem Development Initiative Innovation Ecosystem Development Initiative Funding Opportunity Number DE-FOA-0000356 Applicant (Legal Name) The Regents of the University of California, UC San Diego Location: La Jolla, CA Project Title Regional Energy Innovation and Commercialization Proposed Action or Project Description The University of California San Diego and San Diego State University are partnering to address deficiencies in the process for translation of research discoveries to the private sector in the clean energy space in the greater San Diego region and accelerate the movement of clean energy innovation from the university laboratory into the marketplace. The Phase I objective for launching the Regional Energy Innovation Challenge includes tasks such as: 1) project management and planning (organizing advisory

144

Innovation Ecosystem Development Initiative  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

U.S. Department of Energy Categorical Exclusion Determination Form Program or Field Office: Office of Energy Efficiency and Renewable Energy: Innovation Ecosystem Development Initiative Funding Opportunity Number DE-FOA-0000356 Applicant (Legal Name) University of Central Florida Location: Orlando, FL Project Title MegaWatt Ventures Proposed Action or Project Description The University of Central Florida is dedicated to creating innovative programs that accelerate the

145

The Roles of an Expanding Wind Field and Inertial Stability in Tropical Cyclone Secondary Eyewall Formation  

E-Print Network (OSTI)

that is configured as a balanced vortex model. Given the symmetric tangential wind and temperature structure from WRFThe Roles of an Expanding Wind Field and Inertial Stability in Tropical Cyclone Secondary Eyewall and Forecasting Model (WRF) is used to simulate secondary eyewall formation (SEF) in a tropical cyclone (TC

Kossin, James P.

146

An urban ecosystem as a superposition of interrelated active media  

Science Journals Connector (OSTI)

A space-time model that treats the urban ecosystem as a superposition of active media is expanded to take the heterogeneity of anthropogenic and natural factors into account. The approach is based on represent...

A. E. Sidorova; Yu. V. Mukhartova; L. V. Yakovenko

2014-09-01T23:59:59.000Z

147

Coupling and comparing a spatially- and temporally-detailed eutrophication model with an ecosystem network model: An initial application to Chesapeake Bay  

Science Journals Connector (OSTI)

Coastal waters are modeled for a variety of purposes including eutrophication remediation and fisheries management. Combining these two approaches provides insights which are not available from either approach independently. Coupling is confounded, however, ... Keywords: Atlantic menhaden, CE-QUAL-ICM, Chesapeake Bay, Ecopath, Eutrophication, Phytoplankton

Carl F. Cerco; Dorothy Tillman; James D. Hagy

2010-04-01T23:59:59.000Z

148

Copyrighted Material What Is Tropical Ecology?  

E-Print Network (OSTI)

Copyrighted Material What Is Tropical Ecology? Asking the question, What is tropical ecology? may seem akin to asking questions such as, Who is buried in Grant's tomb? Tropical ecology is the study of the ecology of tropical regions. But so what? Consider these questions: First, what is ecology? What are its

Landweber, Laura

149

E-Print Network 3.0 - applied ecosystem analysis Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

life cycle assessment analysis (LCA), the article... of the problems with LCA. Linking industrial models with spatially explicit, dynamic and site-specific ecosystem......

150

Microtopography Recreation Benefits Ecosystem Restoration  

Science Journals Connector (OSTI)

Microtopography Recreation Benefits Ecosystem Restoration ... First, recreated microtopography alters rainfall redistribution and surface runoff path by adding topographic variation at fine scales. ... In conclusion, although recreating microtopography benefits ecosystem restoration, problems and perplexities still remain, partly due to the complexity of microtopography and the absence of systematic observations. ...

Wei Wei; Liding Chen; Lei Yang; F. Fred Samadani; Ge Sun

2012-09-27T23:59:59.000Z

151

Tropical Western Pacific CART Site  

NLE Websites -- All DOE Office Websites (Extended Search)

climate: the Tropical Western Pacific (TWP) CART site, along the equator in the western Pacific Ocean. The TWP locale lies between 10 degrees North latitude and 10 degrees South...

152

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

153

Ecosystems & Fisheries-Oceanography Coordinated Investigations  

E-Print Network (OSTI)

Ecosystems & Fisheries-Oceanography Coordinated Investigations · Healthy and productive coastal Communities Fishing Industry & Coastal Infrastructure Marine Ecosystem Original Paradigm #12;We had Consumers & Coastal Communities Fishing Industry & Coastal Infrastructure Marine Ecosystem Control

154

Climate change, biotic interactions and ecosystem services  

Science Journals Connector (OSTI)

...generalized in aquatic systems (Daufresne...let alone ecosystems, will be challenging...management and restoration in the face...terrestrial and aquatic ecosystems to changes in...the small in aquatic ecosystems. Proc. Natl...

2010-01-01T23:59:59.000Z

155

Sensitivity of global warming to the pattern of tropical ocean warming  

Science Journals Connector (OSTI)

The current generation of climate models that couple atmospheric and oceanic general circulation models predict substantially different patterns of sea surface temperatures (SSTs) in the Tropics when run in an...

Joseph J. Barsugli; Sang-Ik Shin; Prashant D. Sardeshmukh

2006-10-01T23:59:59.000Z

156

P h y s i c a l O c e a n o g r a p h y D i v i s i o n The Tropical Atlantic Sea Surface Temperature Bias in Coupled  

E-Print Network (OSTI)

using the NCAR community earth system model version 1 (CESM1). The tropical Atlantic SST bias (simulated

157

Tropical Cyclone Changes in the Western North Pacific in a Global Warming Scenario MARKUS STOWASSER, YUQING WANG, AND KEVIN HAMILTON  

E-Print Network (OSTI)

Tropical Cyclone Changes in the Western North Pacific in a Global Warming Scenario MARKUS STOWASSER The influence of global warming on the climatology of tropical cyclones in the western North Pacific basin Model version 2 (CCSM2) coupled global climate model. The regional model is first tested in 10 yr

Wang, Yuqing

158

Ecosystem Vulnerability Assessment - Patterns of Climate Change...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Ecosystem Vulnerability Assessment - Patterns of Climate Change Vulnerability in the Southwest Ecosystem Vulnerability Assessment - Patterns of Climate Change Vulnerability in the...

159

The Role of Disturbance in Dry Tropical Forest Landscapes  

SciTech Connect

Disturbance can be defined as 'any relatively discrete event in time that disrupts ecosystem, community, or population structure and changes resources, substrate availability, or the physical environment'. This definition requires that the spatial and temporal scales of the system and disturbance be determined. Disturbances are typically characterized by their size, spatial distribution, frequency or return time, predictability, and magnitude (which includes both intensity and severity). These disturbance attributes set the parameters for the suite of species, both plant and animal, that can persist within a given system. As such, an understanding of seasonally dry tropical forests in Asia requires an understanding of disturbance within the region. However, disturbances are relatively poorly understood in dry tropical forests, partly because of the weak seasonality in temperature and high tree species diversity of these forests relative to most forest systems of the world. There are about 1,048,700 km{sup 2} of dry tropical forests worldwide and that only 3% of this land is in conservation status. In other words, 97% of the world's seasonally dry tropical forest is at risk of human disturbance. About half of this forest occurs in South America, where most of the conservation lands are located. Satellite imagery based on MODIS (Moderate Resolution Imaging Spectroradiometer) data shows that only about 3.8% of the world's dry tropical forests are in Australia and South east Asia. The susceptibility of these forests to human disturbances is of great concern and is largely unstudied. Because natural disturbance regimes shape the ecosystem structure and are in many ways integral to these forest systems, it is critical to know how natural disturbance affects dry forest in order to understand the effects of human activities on these forests. Even basic information about disturbances in dry tropical forests is only recently available. Therefore this chapter brings together much of the available information from dry tropical forest throughout the world with the goal of developing an understanding of the role of disturbance in Asian dry forests. Most ecologists now recognize that disturbances, rather than being catastrophic agents of destruction, are a normal, perhaps even an integral, part of long-term system dynamics. The composition, structure, organization, and development and trophic dynamics of most forest systems are the products of disturbances. As an example, the forest composition for two disturbances in the Anaikatty Hills of Western Ghats were compared, where the low disturbance was from past logging followed by cutting and illicit felling and grazing and the high disturbance was due to human presence, past logging, and fuelwood collection. They found higher species richness and Shannon-Wiener diversity index for the low-disturbance forest (98 and 3.9, respectively) compared to the high-disturbance stand (45 and 2.71, respectively) as well as significant differences in mean basal area of trees, density of seedlings, number of species, density and diversity of shrubs, and number of species and diversity of herbs. Some ecological systems contain species that have evolved in response to disturbances. Adaptations typical of dry tropical forest plants are drought tolerance, seed dispersal mechanisms, and the ability to sprout subsequent to disturbance. In contrast, evidence was found that human disturbance in Kakamega Forest of western Kenya has significantly reduced allelic richness and heterozygosity, increased inbreeding, and slightly reduced gene flow in Prunus africana in the past century.

Dale, Virginia H [ORNL

2011-01-01T23:59:59.000Z

160

Ocean dynamics and thermodynamics in the tropical Indo- Pacific region  

E-Print Network (OSTI)

Pacific Oceans . . . . . . . . . . . . . . . . . . . . . . . . . . . . .currents in the tropical Pacific Ocean. J. Phys. Oceanogr. ,in the eastern tropical Pacific Ocean associated with the

Drushka, Kyla

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "tropical ecosystem model" 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

Elements of tropical Pacific decadal variability  

E-Print Network (OSTI)

potential to change the background state of the eastern tropical Pacific. Simultaneously, a redistribution of atmospheric vorticity in the western tropical Pacific affects isopycnal depth and therefore ocean thermal structure progressing the decadal change...

Fuckar, Neven-Stjepan

2003-01-01T23:59:59.000Z

162

NPP Tropical Forest: Atherton, Australia  

NLE Websites -- All DOE Office Websites (Extended Search)

Atherton, Australia, 1974-1985 Atherton, Australia, 1974-1985 [PHOTOGRAPH] Photograph: View across the forest canopy near Atherton (click on the photo to view a series of images from this site) Data Citation Cite this data set as follows: Stocker, G. C. 2001. NPP Tropical Forest: Atherton, Australia, 1974-1985. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. Description Litterfall was determined over 3-4 years (1974/5-1978) for two tropical rainforest sites and for 5 years (1980-1985) for a third study site near Atherton, Queensland, in northeast Australia. Although net primary production (NPP) was not determined, the extensive site description data and the rarity of measurements on tropical forests south of the Equator

163

NPP Tropical Forest: Darien, Panama  

NLE Websites -- All DOE Office Websites (Extended Search)

Darien, Panama, 1967-1968 Darien, Panama, 1967-1968 [PHOTOGRAPH] Photograph: Tropical moist forest near Darien (click on the photo to view a series of images from this site). Data Citation Cite this data set as follows: Golley, F. B. 1998. NPP Tropical Forest: Darien, Panama, 1967-1968. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. Description Biomass and nutrient content of different vegetation components and soil for a transitional moist/dry tropical forest were determined in 1967-68 at Darien Province, Panama. NPP was not estimated. Situated about 160 km ESE of Panama City, close to the town of Santa Fe, the Darien study site consisted of two plots, about 8 km apart, one of

164

A multi-resolution ensemble study of a tropical urban environment and its interactions with the background regional atmosphere  

E-Print Network (OSTI)

This study employed the Weather Research and Forecasting model with a single-layer urban canopy model to investigate the urban environment of a tropical city, Singapore. The coupled model was evaluated against available ...

Li, Xian-Xiang

165

Tropical Fruit Ambrosia Makes 6 servings  

E-Print Network (OSTI)

Tropical Fruit Ambrosia Makes 6 servings 1 jar (26 oz.) mixed tropical fruit, drained 1 large coconut Lettuce leaves Directions: 1. In a large bowl, combine the tropical fruit and banana. 2. In a small bowl, stir together the yogurt, lime zest, and lime juice until blended. 3. Spoon over the fruit

Florida, University of

166

Impacts of tropical deforestation. Part II: The role of large-scale dynamics  

SciTech Connect

This is the second in a pair of papers in which the possible impacts of tropical deforestation are examined using a version of the NCAR CCM1. The emphasis in this paper is on the influence of tropical deforestation on the large-scale climate system. This influence is explored through the examination of the regional moisture budget and through an analysis of the Hadley and Walker circulations. Modification of the model surface parameters to simulate tropical deforestation produces significant modifications of both Hadley and Walker circulations, which result in changes distant from the region of deforestation. A mechanism for propagation to middle and high latitudes of disturbances arising form tropical deforestation is proposed based on Rossby wave propagation mechanisms. These mechanisms, which have also been associated with the extratropical influences of ENSO events, provide a pathway for the dispersion of the tropical disturbances to high latitudes. 27 refs., 20 figs., 1 tab.

Zhang, H.; Henderson-Sellers, A. [Macquarie Univ., Sydney (Australia)] [Macquarie Univ., Sydney (Australia); McGuffie, K. [Univ. of Technology, Sydney (Australia)] [Univ. of Technology, Sydney (Australia)

1996-10-01T23:59:59.000Z

167

Effects of nitrogen additions on above- and belowground carbon dynamics in two tropical forests  

SciTech Connect

Anthropogenic nitrogen (N) deposition is increasing rapidly in tropical regions, adding N to ecosystems that often have high background N availability. Tropical forests play an important role in the global carbon (C) cycle, yet the effects of N deposition on C cycling in these ecosystems are poorly understood. We used a field N-fertilization experiment in lower and upper elevation tropical rain forests in Puerto Rico to explore the responses of above- and belowground C pools to N addition. As expected, tree stem growth and litterfall productivity did not respond to N fertilization in either of these Nrich forests, indicating a lack of N limitation to net primary productivity (NPP). In contrast, soil C concentrations increased significantly with N fertilization in both forests, leading to larger C stocks in fertilized plots. However, different soil C pools responded to N fertilization differently. Labile (low density) soil C fractions and live fine roots declined with fertilization, while mineral-associated soil C increased in both forests. Decreased soil CO2 fluxes in fertilized plots were correlated with smaller labile soil C pools in the lower elevation forest (R2 = 0.65, p\\0.05), and with lower live fine root biomass in the upper elevation forest (R2 = 0.90, p\\0.05). Our results indicate that soil C storage is sensitive to N deposition in tropical forests, even where plant productivity is not N-limited. The mineral-associated soil C pool has the potential to respond relatively quickly to N additions, and can drive increases in bulk soil C stocks in tropical forests.

Cusack, D.; Silver, W.L.; Torn, M.S.; McDowell, W.H.

2011-04-15T23:59:59.000Z

168

Numerical simulation of interannual and interdecadal variability of surface wind over the tropical Pacific  

Science Journals Connector (OSTI)

A global atmospheric general circulation model (L9R15 AGCMs) forced by COADS SST was integrated from 1945 to 1993. Interannual and interdecadal variability of the simulated surface wind over the tropical Pacific ...

Wu Ai-ming; Zhao Yong-ping; Bai Xue-zhi…

2002-03-01T23:59:59.000Z

169

Probabilistic Verification of Global and Mesoscale Ensemble Forecasts of Tropical Cyclogenesis  

Science Journals Connector (OSTI)

Probabilistic forecasts of tropical cyclogenesis have been evaluated for two samples: a near-homogeneous sample of ECMWF and Weather Research and Forecasting (WRF) Model–ensemble Kalman filter (EnKF) ensemble forecasts during the National Science ...

Sharanya J. Majumdar; Ryan D. Torn

2014-10-01T23:59:59.000Z

170

Tropical Cyclogenesis Sensitivity to Environmental Parameters in Radiative-Convective Equilibrium  

E-Print Network (OSTI)

In this study, the relationship between the likelihood of tropical cyclogenesis and external environmental forcings is explored in the simplest idealized modelling framework possible: radiative-convective equilibrium on a ...

Nolan, David S.

171

Effects of Monsoon Trough Intraseasonal Oscillation on Tropical Cyclogenesis over the Western North Pacific  

Science Journals Connector (OSTI)

The effects of intraseasonal oscillation (ISO) of the western North Pacific (WNP) monsoon trough on tropical cyclone (TC) formation were investigated using the Advanced Research Weather Research and Forecasting (ARW) Model. A weak vortex was ...

Xi Cao; Tim Li; Melinda Peng; Wen Chen; Guanghua Chen

2014-12-01T23:59:59.000Z

172

Sensitivity of Tropical Cyclone Feedback on the Intensity of Western Pacific Subtropical High to Microphysics Scheme  

Science Journals Connector (OSTI)

The Advanced Weather Research Forecast (WRF) model is used to examine the sensitivity of simulated tropical cyclone (TC) track and associated intensity of western Pacific subtropical high (WPSH) to microphysical parameterization (MP) scheme. It is ...

Yuan Sun; Zhong Zhong; Wei Lu

173

Numerical simulation of the Mindanao Eddy and Tropical Currents of Pacific Ocean  

Science Journals Connector (OSTI)

Results of numerical simulation of currents in the western North Tropical Pacific Ocean by using a barotropic primitive equation model ... strength-circulation systems such as the North Equatorial Current, the Mi...

Li Rongfeng; Zeng Qingcun; Ji Zhongzhen

1992-09-01T23:59:59.000Z

174

Interannual Biases Induced by Freshwater Flux and Coupled Feedback in the Tropical Pacific  

Science Journals Connector (OSTI)

Freshwater flux (FWF) forcing–induced feedback has not been represented adequately in many coupled ocean–atmosphere models of the tropical Pacific. Previously, various approximations have been made in representing the FWF forcing in climate ...

Rong-Hua Zhang; Guihua Wang; Dake Chen; A. J. Busalacchi; E. C. Hackert

2010-05-01T23:59:59.000Z

175

Tropical cyclones within the sedimentary record : analyzing overwash deposition from event to millennial timescales  

E-Print Network (OSTI)

Tropical cyclone activity over the last 5000 years is investigated using overwash sediments from coastal lagoons on the islands of Vieques, Puerto Rico and Koshikijima, Japan. A simple sediment transport model can reproduce ...

Woodruff, Jonathan Dalrymple

2009-01-01T23:59:59.000Z

176

The Roles of the Hadley Circulation and Downward Control in Tropical Upwelling  

Science Journals Connector (OSTI)

Several idealized models of tropical upwelling are presented in order to clarify the roles of the nonlinear Hadley circulation and extratropical wave driving. In particular, it is shown that the Hadley circulation and wave-driven circulation ...

Tiehan Zhou; Marvin A. Geller; Kevin Hamilton

2006-11-01T23:59:59.000Z

177

Tropical rainforest biodiversity: field and  

E-Print Network (OSTI)

. The Udzungwas in particular, are one of the single, most important areas in Africa for biodiversity conservationTropical rainforest biodiversity: field and GIS tools for assessing, monitoring and mapping II with Tanzania National ParksTanzania National Parks andand Wildlife Conservation SocietyWildlife Conservation

178

Remote sensing data assimilation for a prognostic phenology model  

SciTech Connect

Predicting the global carbon and water cycle requires a realistic representation of vegetation phenology in climate models. However most prognostic phenology models are not yet suited for global applications, and diagnostic satellite data can be uncertain and lack predictive power. We present a framework for data assimilation of Fraction of Photosynthetically Active Radiation absorbed by vegetation (FPAR) and Leaf Area Index (LAI) from the MODerate Resolution Imaging Spectroradiometer (MODIS) to constrain empirical temperature, light, moisture and structural vegetation parameters of a prognostic phenology model. We find that data assimilation better constrains structural vegetation parameters than climate control parameters. Improvements are largest for drought-deciduous ecosystems where correlation of predicted versus satellite-observed FPAR and LAI increases from negative to 0.7-0.8. Data assimilation effectively overcomes the cloud- and aerosol-related deficiencies of satellite data sets in tropical areas. Validation with a 49-year-long phenology data set reveals that the temperature-driven start of season (SOS) is light limited in warm years. The model has substantial skill (R = 0.73) to reproduce SOS inter-annual and decadal variability. Predicted SOS shows a higher inter-annual variability with a negative bias of 5-20 days compared to species-level SOS. It is however accurate to within 1-2 days compared to SOS derived from net ecosystem exchange (NEE) measurements at a FLUXNET tower. The model only has weak skill to predict end of season (EOS). Use of remote sensing data assimilation for phenology model development is encouraged but validation should be extended with phenology data sets covering mediterranean, tropical and arctic ecosystems.

Thornton, Peter E [ORNL; Stockli, Reto [Colorado State University, Fort Collins

2008-01-01T23:59:59.000Z

179

Internal variability of the tropical Pacific ocean Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA  

E-Print Network (OSTI)

Internal variability of the tropical Pacific ocean M. Jochum Earth, Atmospheric and Planetary model of the tropical Pacific ocean is analyzed to quantify the interannual variability caused by internal variability of ocean dynamics. It is found that along the Pacific cold tongue internal variability

Jochum, Markus

180

The Tropical Response to Extratropical Thermal Forcing in an Idealized GCM: The Importance of Radiative Feedbacks and Convective Parameterization  

E-Print Network (OSTI)

) atmospheric energy transport per unit mass transport] of the model tropics converts the energy flux change 25% between the imposed oceanic flux and the resulting response in the atmospheric energy transportThe Tropical Response to Extratropical Thermal Forcing in an Idealized GCM: The Importance

Miami, University of

Note: This page contains sample records for the topic "tropical ecosystem model" 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

Change of the Tropical Hadley Cell Since 1950 Xiao-Wei Quan, Henry F. Diaz, and Martin P. Hoerling  

E-Print Network (OSTI)

Change of the Tropical Hadley Cell Since 1950 Xiao-Wei Quan, Henry F. Diaz, and Martin P. Hoerling The change in the tropical Hadley cell since 1950 is examined within the context of the long-term warming of Hadley cell, and ensemble 50-year simulations by an atmospheric general circulation model forced

Quan, Xiaowei

182

Ecosystem Task Force Meeting Minutes  

E-Print Network (OSTI)

in violation of the clean water act 2. Long term tracking can identify problems and remediation techniques. 3. A focus on planning helps ground the Task Force because of the complexity of ecosystems. UNH targets for future reductions? 3.1. No. We could work on those with the Task Force. Water Quality

New Hampshire, University of

183

NPP Tropical Forest: Kade, Ghana  

NLE Websites -- All DOE Office Websites (Extended Search)

Kade, Ghana, 1957-1972 Kade, Ghana, 1957-1972 [PHOTOGRAPH] Photograph: Forest after clearing of secondary growth at the Kade site (click on the photo to view a series of images from this site). Data Citation Cite this data set as follows: Nye, P. H., and D. J. Greenland. 1998. NPP Tropical Forest: Kade, Ghana, 1957-1972. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. Description Biomass and nutrient content of different vegetation components and soil for a secondary tropical forest were determined in the late 1950s at the Kade Agricultural Research Station of the former University College, Ghana. Net primary production (NPP) was estimated on the basis of standing biomass accumulation and litter fall. Later studies on litter and wood fall and

184

NPP Tropical Forest: Pasoh, Malaysia  

NLE Websites -- All DOE Office Websites (Extended Search)

Pasoh, Malaysia, 1971-1973 Pasoh, Malaysia, 1971-1973 [PHOTOGRAPH] Photograph: Profile of the Pasoh Forest (click on the photo to view a series of images from this site) Data Citation Cite this data set as follows: Kira, T., N. Manokaran, and S. Appanah. 1998. NPP Tropical Forest: Pasoh, Malaysia, 1971-1973. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. Description Biomass and productivity of a lowland tropical forest in the Pasoh Forest Reserve, Malaysia, were determined from 1971 to 1973, under the auspices of the International Biological Programme. From 1970 to 1978, intensive research on lowland rain forest ecology and dynamics took place under a joint research project between the University of Malaya (UM) and the

185

Developing Model Constraints on Northern Extra-Tropical Carbon Cycling Based on measurements of the Abundance and Isotopic Composition of Atmospheric CO2  

SciTech Connect

The objective of this project was to perform CO2 data syntheses and modeling activities to address two central questions: 1) how much has the seasonal cycle in atmospheric CO2 at northern high latitudes changed since the 1960s, and 2) how well do prognostic biospheric models represent these changes. This project also supported the continuation of the Scripps time series of CO2 isotopes and concentration at ten baseline stations distributed globally.

Keeling, Ralph [UCSD-SIO

2014-12-12T23:59:59.000Z

186

Adaptive management of coastal ecosystem restoration projects  

Science Journals Connector (OSTI)

There is a clear need to apply better and more effective management schemes to coastal ecosystem restoration projects. It is very common for aquatic ecosystem restoration projects not to meet their goals. Poor performance has led to a high degree of uncertainty about the potential success of any restoration effort. Under adaptive management, the knowledge gained through monitoring of the project and social policies is translated into restoration policy and program redesign. Planners and managers can utilize the information from the monitoring programs in an effective way to assure that project goals are met or that informed and objective decisions are made to address both ecological and societal needs. The three main ingredients of an effective adaptive management plan in a restoration project are: (1) a clear goal statement; (2) a conceptual model; and (3) a decision framework. The goal ‘drives’ the design of the project and helps guide the development of performance criteria. The goal statement and performance criteria provide the means by which the system can be judged. With the conceptual model, the knowledge base from the field of ecological science plays an active and critical role in designing the project to meet the goal. A system-development matrix provides a simple decision framework to view the alternative states for the system during development, incorporate knowledge gained through the monitoring program, and formulate a decision on actions to take if the system is not meeting its goal.

Ronald M Thom

2000-01-01T23:59:59.000Z

187

Lynx Conservation in an Ecosystem Management  

E-Print Network (OSTI)

conservation could be approached within the context of ecosystem management. The Concept of Ecosystem-scale analysis, on science-based man- agement, on adaptive management, on interagency cooperation419 Chapter 15 Lynx Conservation in an Ecosystem Management Context Kevin S. McKelvey, USDA Forest

188

PERSPECTIVE Restoration of Ecosystem Services for  

E-Print Network (OSTI)

, and so it is obscuring the fact that restoration projects, par- ticularly those in aquatic ecosystemsPERSPECTIVE Restoration of Ecosystem Services for Environmental Markets Margaret A. Palmer1,2 * and Solange Filoso1 Ecological restoration is an activity that ideally results in the return of an ecosystem

Palmer, Margaret A.

189

UPDATE: Tropical Storm Isaac | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

UPDATE: Tropical Storm Isaac UPDATE: Tropical Storm Isaac UPDATE: Tropical Storm Isaac August 27, 2012 - 6:30pm Addthis Satellite image of Tropical Storm Isaac. | Courtesy of NOAA. Satellite image of Tropical Storm Isaac. | Courtesy of NOAA. April Saylor April Saylor Former Digital Outreach Strategist, Office of Public Affairs Tropical Storm Isaac has impacted Florida and is expected to make landfall along the Gulf Coast by early morning on August 29. As thousands of Gulf Coast residents are without power, the Energy Department's Office of Electricity Delivery and Energy Reliability will publish Emergency Situation Reports that provide details on customer outages and other energy sector impacts in the storm's path, as well as recovery and restoration activities being undertaken. The first Situation

190

Phytoplankton biomass and residual nitrate in the pelagic ecosystem  

Science Journals Connector (OSTI)

...research-article Research Article Phytoplankton biomass and residual nitrate in the pelagic ecosystem...are linked to changes in the chlorophyll biomass. The model can be treated analytically...Mathematical bounds are found for the autotrophic biomass and the residual nitrate in terms of the...

2003-01-01T23:59:59.000Z

191

Integrating ecosystem-service tradeoffs into land-use decisions  

Science Journals Connector (OSTI)

...InVEST software tool to evaluate the...existed between carbon storage and water quality...improved carbon storage (0.5% increase...food, water, and energy security and in climate...explicit modeling tool, Integrated Valuation of Ecosystem Services...

Joshua H. Goldstein; Giorgio Caldarone; Thomas Kaeo Duarte; Driss Ennaanay; Neil Hannahs; Guillermo Mendoza; Stephen Polasky; Stacie Wolny; Gretchen C. Daily

2012-01-01T23:59:59.000Z

192

ORIGINAL ARTICLE Ecosystem services and hydroelectricity in Central America  

E-Print Network (OSTI)

ORIGINAL ARTICLE Ecosystem services and hydroelectricity in Central America: modelling service services provided to the Costa Rican and Nicaraguan hydroelectric sectors, which are crucial sectors for the conservation and restoration of forests for the services they provide to the hydroelectric sector. As such

Paris-Sud XI, Université de

193

Tropical Cloud Life Cycle and Overlap Structure  

NLE Websites -- All DOE Office Websites (Extended Search)

Tropical Cloud Life Cycle and Overlap Structure Vogelmann, Andrew Brookhaven National Laboratory Jensen, Michael Brookhaven National Laboratory Kollias, Pavlos Brookhaven National...

194

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

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

195

The Role of the Tropics in Abrupt Climate Changes  

SciTech Connect

Topics addressed include: abrupt climate changes and ocean circulation in the tropics; what controls the ocean thermal structure in the tropics; a permanent El Niño in paleoclimates; the energetics of the tropical ocean.

Fedorov, Alexey [Yale University] [Yale University

2013-12-07T23:59:59.000Z

196

Influence of Tropical Tropopause Layer Cooling on Atlantic Hurricane Activity  

E-Print Network (OSTI)

Virtually all metrics of Atlantic tropical cyclone activity show substantial increases over the past two decades. It is argued here that cooling near the tropical tropopause and the associated decrease in tropical cyclone ...

Solomon, Susan

197

13 Emergence of a science policy-based approach to ecosystem-oriented management of large marine ecosystems  

Science Journals Connector (OSTI)

This article addresses interdisciplinary sustainable aspects of fisheries as linkages for the adaptive management of large marine ecosystems (LMEs). Natural and human-induced impacts on living marine resources are considered. Management and the ecological aspects of fish stock populations in the United States Northeast Continental Shelf ecosystem are examined for prospective and emerging “best practices” from a synthesis of the scientific literature. With the passage of the Oceans Act of 2000 (Public Law 106–256; e.g. Watkins 2002) in the United States, this article seeks to enhance the fostering of sustainability through natural and social science by forging linkages between the best available science practice and the “precautionary approach” that includes ecosystem considerations of fish stocks as component parts of a representative model LME.

F.J. Gable

2005-01-01T23:59:59.000Z

198

Characterization of Trapped Lignin-Degrading Microbes in Tropical...  

NLE Websites -- All DOE Office Websites (Extended Search)

Trapped Lignin-Degrading Microbes in Tropical Forest Soil. Characterization of Trapped Lignin-Degrading Microbes in Tropical Forest Soil. Abstract: Lignin is often the most...

199

Diurnal Precipitation Regimes in the Global Tropics  

Science Journals Connector (OSTI)

Diurnal variations of the global tropical precipitation are documented by using two complementary Tropical Rainfall Measuring Mission (TRMM) datasets (3B42 and 3G68) for 1998–2006 in an attempt to provide a unified view of the diurnal cycle and a ...

Kazuyoshi Kikuchi; Bin Wang

2008-06-01T23:59:59.000Z

200

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; Sebastián Martinuzzi; Derric Pennington; Volker C. Radeloff

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "tropical ecosystem model" 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

A Process-based Analysis of Methane Exchanges Between Alaskan Terrestrial Ecosystems and the Atmosphere  

E-Print Network (OSTI)

We developed and used a new version of the Terrestrial Ecosystem Model (TEM) to study how rates of methane (CH4) emissions and consumption in Alaskan soils have changed over the past century in response to observed changes ...

Zhuang, Qianlai.

202

Optimal management of a eutrophied coastal ecosystem: balancing agricultural and municipal abatement measures  

Science Journals Connector (OSTI)

Agriculture and municipal wastewater are the principal sources of eutrophying nutrients in many water ecosystems. We develop a model which considers the characteristics of agricultural and municipal nutrient a...

Marita Laukkanen; Anni Huhtala

2008-02-01T23:59:59.000Z

203

Limiting Factors for Convective Cloud Top Height in the Tropics  

NLE Websites -- All DOE Office Websites (Extended Search)

Limiting Factors for Convective Cloud Top Limiting Factors for Convective Cloud Top Height in the Tropics M. P. Jensen and A. D. Del Genio National Aeronautics and Space Administration Goddard Institute for Space Studies Columbia University New York, New York Introduction Populations of tropical convective clouds are mainly comprised of three types: shallow trade cumulus, mid-level cumulus congestus and deep convective clouds (Johnson et al. 1999). Each of these cloud types has different impacts on the local radiation and water budgets. For climate model applications it is therefore important to understand the factors which determine the type of convective cloud that will occur. In this study, we concentrate on describing the factors that limit the cloud-top heights of mid-

204

Polychlorinated biphenyls in coastal tropical ecosystems: Distribution, fate and risk assessment  

SciTech Connect

Polychlorinated biphenyls (PCBs) though banned still find use in most developing countries including Ghana. PCB congener residues in sediments in the coastal regions of Ghana were determined. Sediment samples (n=80) were collected between June 2008 and March 2009, extracted by the continuous soxhlet extraction using (1:1) hexane-acetone mixture for 24 h and analyzed with a CP 3800 gas chromatogram equipped with {sup 65}Ni electron capture detector (GC-ECD) and a mixed PCBs standard of the ICES 7 as marker, after clean-up. Validation of the efficiency and precision of the extraction and analytical methods were done by extracting samples spiked with 2 ppm ICES PCB standard and a certified reference material 1941b for marine sediments from NIST, USA, and analyzed alongside the samples. Total PCBs detected in sediments during the dry and wet seasons were, respectively, 127 and 112 {mu}g/kg dry weight (dw), with a mean concentration of 120 {mu}g/kg (dw). The composition of PCB homologues in the sediments were dominated by tri-, penta- and tetra-PCBs. There was no correlation between organic carbon (OC) of the sediments and total PCBs content. Risk assessments conducted on the levels indicated that PCB levels in sediments along the coastal region of Ghana poses no significant health risk to humans.

Dodoo, D.K. [Department of Chemistry, University of Cape Coast, Cape Coast (Ghana)] [Department of Chemistry, University of Cape Coast, Cape Coast (Ghana); Essumang, D.K., E-mail: kofiessumang@yahoo.com [Department of Chemistry, University of Cape Coast, Cape Coast (Ghana); Jonathan, J.W.A.; Bentum, J.K. [Department of Chemistry, University of Cape Coast, Cape Coast (Ghana)] [Department of Chemistry, University of Cape Coast, Cape Coast (Ghana)

2012-10-15T23:59:59.000Z

205

Projections of the Tropical Atlantic Vertical Wind Shear and Its Relationship with ENSO in SP-CCSM4  

Science Journals Connector (OSTI)

The vertical wind shear over the tropical Atlantic Ocean and its relationship with ENSO are analyzed in the superparameterized Community Climate System Model, version 4 (SP-CCSM4) and in the conventional CCSM4. The climatology of vertical wind ...

Xiaojie Zhu; Li Xu; Cristiana Stan

2014-11-01T23:59:59.000Z

206

Control of Decadal and Bidecadal Climate Variability in the Tropical Pacific by the Off-Equatorial South Pacific Ocean  

Science Journals Connector (OSTI)

Delayed negative feedback processes determining intrinsic decadal and bidecadal time scales for the tropical variability in the Pacific are investigated based on climate model experiments. By comparing a control run driven by preindustrial forcing ...

Hiroaki Tatebe; Yukiko Imada; Masato Mori; Masahide Kimoto; Hiroyasu Hasumi

2013-09-01T23:59:59.000Z

207

Changes in the Tropical Pacific SST Trend from CMIP3 to CMIP5 and Its Implication of ENSO  

Science Journals Connector (OSTI)

This study assesses the changes in the tropical Pacific Ocean sea surface temperature (SST) trend and ENSO amplitude by comparing a historical run of the World Climate Research Programme Coupled Model Intercomparison Project (CMIP) phase-5 ...

Sang-Wook Yeh; Yoo-Geun Ham; June-Yi Lee

2012-11-01T23:59:59.000Z

208

Linking ecosystem services, rehabilitation, and river hydrogeomorphology  

E-Print Network (OSTI)

, however, because of a developing trend in environmental sciences to emphasize the benefits and services provided by aquatic and terrestrial ecosystems (e.g., Postel and Carpenter 1997, Loomis et al. 2000, Nelson et al. 2009). This trend in- cludes... (Ricciardi and Rasmussen 1999). A focus on ecosystem ser- vices may also promote alternative river management options, including river rehabilitation. The USACE’s objective in this area is related to mandates for national ecosystem restoration through...

Thorp, James H.

2010-01-01T23:59:59.000Z

209

The Role of Science in Ecosystem Restoration and Management: The South Florida Ecosystem Restoration Initiative  

E-Print Network (OSTI)

) Reuse Wastewater Seepage Management Surface Water Storage Reservoir Removing Barriers to SheetflowThe Role of Science in Ecosystem Restoration and Management: The South Florida Ecosystem Restoration Initiative Frank J. Mazzotti University of Florida Fort Lauderdale Research and Education Center

Mazzotti, Frank

210

Energy, Water Ecosystem Engineering | Clean Energy | ORNL  

NLE Websites -- All DOE Office Websites (Extended Search)

Resource Systems SHARE Energy-Water Resource Systems Examine sustainable energy production and water availability in healthy ecosystems through technology development,...

211

Manufacturing Ecosystems and Keystone Technologies (Text Version)  

Energy.gov (U.S. Department of Energy (DOE))

This is a text version of the Manufacturing Ecosystems and Keystone Technologies video, originally presented on March 12, 2012 at the MDF Workshop held in Chicago, Illinois.

212

Rehabilitating Aquatic Ecosystems in Developed Areas  

Science Journals Connector (OSTI)

Efforts to restore watershed and aquatic ecosystem processes in urban areas are constrained by...rehabilitation and enhancement are preferred over restoration when referring to improving environmental conditions ...

Kathleen G. Maas-Hebner

2014-01-01T23:59:59.000Z

213

Book review: Welch, Harold. Freshwater ecosystems: Revitalizing ...  

Science Journals Connector (OSTI)

of freshwater aquatic ecosystems to global ecological welfare, deal professionally ... cation of limnology in the protection, management and restoration of aquatic ...

1999-04-01T23:59:59.000Z

214

Physical Modeling of the Composting Ecosystem  

Science Journals Connector (OSTI)

...rolr1), where H = height of the cylinder, ro = outer radius of insulation, and r, = inner radius of insulation. The K value used for the polyurethane foam insulation was 9.3 x 10-5 cal/s cm C. The insulating properties of the other...

J. A. Hogan; F. C. Miller; M. S. Finstein

1989-05-01T23:59:59.000Z

215

Infrasonic precursor of tropical cyclone  

Science Journals Connector (OSTI)

Intense infrasonic emission was observed prior to the birth of a tropical cyclone (Netreba 1991). It is connected apparently with instability of atmospheric layers in cyclone area. There are different mechanisms of this effect. Stratified compressional flow is unstable (Rybak 2002) providing amplification of its potential component. Cooling of air in upward convectionflow makes water vapor supersaturated. This is a nonequilibrium state of fluid where effect of instability can be developed. The equation of infrasonic propagation in such a medium is developed. (Naugolnykh Rybak 2006). Solutions of instabilityequation indicates the effect of radiation instability which produces infrasonic wave generation and its nonlinear evolution. Corresponding analyses of this equation make it possible to clarify the principally important aspects of cycloneinfrasonic precursors. [Work supported by ESP.NR.NRCLG982524.

Konstantin A. Naugolnykh; Samuil A. Rybak

2008-01-01T23:59:59.000Z

216

Biological sources and sinks of methane in tropical habitats and tropical atmospheric chemistry. Doctoral thesis  

SciTech Connect

The contents of this study include: two methods for measuring methane emission from a tropical lake; methane emission by bubbling from Gatun Lake, Panama; methane emission from wetlands in central Panama; consumption of atmospheric methane in soils of central Panama: effects of agricultural development; a seasonal study of soil-atmosphere methane, carbon dioxide, and 222Rn flux in a tropical moist forest; and the effects of tropical deforestation on global and regional atmospheric chemistry.

Keller, M.M.

1990-01-01T23:59:59.000Z

217

E-Print Network 3.0 - atlantic tropical cyclones Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

between Atlantic tropical cyclone power... dif- ferent inferences about late-twenty-first-century Atlantic tropical cyclone activity9 , ranging... Atlantic tropical ... Source:...

218

"Ecosystem Services, Biodiversity and Poverty Reduction  

E-Print Network (OSTI)

"Ecosystem Services, Biodiversity and Poverty Reduction: Is conservation the answer?" Paul van. Most ecosystems will change in the future. 2. Loss of species and biodiversity will continue to happen Energy Demand Urbanisation Climate Change Water Availability Infectious Diseases Biodiversity Loss #12

219

Treating business dimension in software ecosystems  

Science Journals Connector (OSTI)

Software Ecosystems (SECOs) have emerged as an approach to improve Software Engineering (SE) in industry considering relations among companies and stakeholders. Companies have opened up their platforms and artifacts to others, including partners and ... Keywords: component-based software engineering, software ecosystems, software reuse, value-based software engineering

Rodrigo Pereira dos Santos; Cláudia Werner

2011-11-01T23:59:59.000Z

220

The Climate Impact of Past Changes in Halocarbons and CO2 in the Tropical UTLS Region  

Science Journals Connector (OSTI)

A chemistry–climate model coupled to an ocean model is used to compare the climate impact of past (1960–2010) changes in concentrations of halocarbons with those of CO2 in the tropical upper troposphere and lower stratosphere (UTLS). The ...

Charles McLandress; Theodore G. Shepherd; M. Catherine Reader; David A. Plummer; Keith P. Shine

2014-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "tropical ecosystem model" 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

Mechanisms for Tropical Tropospheric Circulation Change in Response to Global Warming*  

E-Print Network (OSTI)

Mechanisms for Tropical Tropospheric Circulation Change in Response to Global Warming* JIAN MA change in global warming is studied by comparing the response of an atmospheric general circulation model globally in response to SST warming. A diagnostic framework is developed based on a linear baroclinic model

Xie, Shang-Ping

222

Global Ensemble Predictions of 2009's Tropical Cyclones Initialized with an Ensemble Kalman Filter  

E-Print Network (OSTI)

). In part, this can be attributed to the general improvements in numerical weather prediction (NWP) models summer tropical cyclones (TCs) from two experimental global numerical weather prediction ensemble prediction systems (EPSs). The first model was a highresolution version (T382L64) of the National Centers

Hamill, Tom

223

Tropical Forest Foundation | Open Energy Information  

Open Energy Info (EERE)

Tropical Forest Foundation Tropical Forest Foundation Jump to: navigation, search Logo: Tropical Forest Foundation Name Tropical Forest Foundation Address 2121 Eisenhower Ave. Suite 200 Place Alexandria, Virginia Zip 22314 Region Northeast - NY NJ CT PA Area Phone number 703.518.8834 Website http://tropicalforestfoundatio Coordinates 38.8013734°, -77.0668734° 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":38.8013734,"lon":-77.0668734,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

224

Nasa's Tropical Cloud Systems and Processes Experiment  

Science Journals Connector (OSTI)

In July 2005, the National Aeronautics and Space Administration investigated tropical cyclogenesis, hurricane structure, and intensity change in the eastern North Pacific and western Atlantic using its ER-2 high-altitude research aircraft. The ...

J. Halverson; M. Black; R. Rogers; S. Braun; G. Heymsfield; D. Cecil; M. Goodman; R. Hood; A. Heymsfield; T. Krishnamurti; G. McFarquhar; M. J. Mahoney; J. Molinari; J. Turk; C. Velden; D-L. Zhang; E. Zipser; R. Kakar

2007-06-01T23:59:59.000Z

225

The Dynamics and Predictability of Tropical Cyclones  

E-Print Network (OSTI)

to pinpoint sources of error in forecasts of tropical cyclone formation and intensification. Despite significant differences in methodology, storm environment and development, it is found in both situations that high convective instability (CAPE) and mid...

Sippel, Jason A.

2010-01-15T23:59:59.000Z

226

Tropical Transition of the 2001 Australian Duck  

Science Journals Connector (OSTI)

In March 2001, a hybrid low pressure system, unofficially referred to as Donald (or the Duck), developed in the Tasman Sea under tropical–extratropical influence, making landfall on the southeastern Australian coast. Here, it is shown that ...

Luke Andrew Garde; Alexandre Bernardes Pezza; John Arthur Tristram Bye

2010-06-01T23:59:59.000Z

227

Habitat structure mediates biodiversity effects on ecosystem properties  

Science Journals Connector (OSTI)

...between the environment, biodiversity and ecosystem functioning in the marine benthos [3,36...and M. Solan 2010 Marine biodiversity-ecosystem functions...idiosyncratic effects of biodiversity in marine ecosystems. Nature...

2011-01-01T23:59:59.000Z

228

Stream hydrology limits recovery of riparian ecosystems after wolf reintroduction  

Science Journals Connector (OSTI)

...condition for ecosystem restoration. 2. Material...and function of ecosystems has been clearly demonstrated for aquatic and terrestrial...large-scale, natural ecosystems occurred following...Landscape-level restoration of riparian zones...

2013-01-01T23:59:59.000Z

229

Impacts of marine-derived nutrients on stream ecosystem functioning  

Science Journals Connector (OSTI)

...productivity of these aquatic ecosystems and decrease further...standing MDN effects on ecosystem functioning in terms...of salmon-related aquatic and riparian ecosystems, in terms of salmon habitat protection and restoration, and fisheries exploitation...

2003-01-01T23:59:59.000Z

230

The ecosystem-service chain and the biological diversity crisis  

Science Journals Connector (OSTI)

...optimize the delivery of ecosystem services rather than to restoration. Further, there are discussions...functional diversity effects in ecosystem service assessments. Proc...Biodiversity effects on aquatic ecosystem functioning-maturation...

2010-01-01T23:59:59.000Z

231

Community and ecosystem responses to recent climate change  

Science Journals Connector (OSTI)

...community and ecosystem effects and to...2002). For aquatic systems, Winder...A. 2009 Novel ecosystems: implications for conservation and restoration. Trends Ecol...interactions in an aquatic ecosystem. Ecology 85...

2010-01-01T23:59:59.000Z

232

Terrestrial Climate Change and Ecosystem Response Recorded in...  

NLE Websites -- All DOE Office Websites (Extended Search)

Terrestrial Climate Change and Ecosystem Response Recorded in Lake Sediments and Related Deposits Reconstruction of past terrestrial climate and ecosystem response relies on...

233

Final Technical Report for "Radiative Heating Associated with Tropical Convective Cloud Systems: Its Importance at Meso and Global Scales"  

SciTech Connect

Heating associated with tropical cloud systems drive the global circulation. The overall research objectives of this project were to i) further quantify and understand the importance of heating in tropical convective cloud systems with innovative observational techniques, and ii) use global models to determine the large-scale circulation response to variability in tropical heating profiles, including anvil and cirrus cloud radiative forcing. The innovative observational techniques used a diversity of radar systems to create a climatology of vertical velocities associated with the full tropical convective cloud spectrum along with a dissection of the of the total heating profile of tropical cloud systems into separate components (i.e., the latent, radiative, and eddy sensible heating). These properties were used to validate storm-scale and global climate models (GCMs) and were further used to force two different types of GCMs (one with and one without interactive physics). While radiative heating was shown to account for about 20% of the total heating and did not have a strong direct response on the global circulation, the indirect response was important via its impact on convection, esp. in how radiative heating impacts the tilt of heating associated with the Madden-Julian Oscillation (MJO), a phenomenon that accounts for most tropical intraseasonal variability. This work shows strong promise in determining the sensitivity of climate models and climate processes to heating variations associated with cloud systems.

Schumacher, Courtney

2012-12-13T23:59:59.000Z

234

Skipso - The Cleantech Ecosystem | Open Energy Information  

Open Energy Info (EERE)

Skipso - The Cleantech Ecosystem Skipso - The Cleantech Ecosystem Jump to: navigation, search Logo: Skipso - The Cleantech Ecosystem Name Skipso - The Cleantech Ecosystem Address 31 Theobals Road Place London, United Kingdom Number of employees 1-10 Year founded 2008 Phone number +447796276923 Website http://www.skipso.com Coordinates 51.5203543°, -0.117755° 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":51.5203543,"lon":-0.117755,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

235

Ecosystem services and human culture Judith Hanna  

E-Print Network (OSTI)

, pollination Cultural: Aesthetic, spiritual, educational, recreational Security: personal safety, secureEcosystem services and human culture Judith Hanna (Social science principal specialist) Judith, happiness, social/community acceptance, recognition, etc) #12;Some problems: · ***What is `culture

236

NASA's Aerosol-Cloud-Ecosystems (ACE) Mission  

Science Journals Connector (OSTI)

Plans for NASA’s Aerosol-Cloud-Ecosystem (ACE) mission is described. Recommended by Earth Science Decadal Survey in 2007, ACE is nominally planned for a 2021 launch. ACE is...

Starr, David O'C

237

Warming alters the metabolic balance of ecosystems  

Science Journals Connector (OSTI)

...particular, it is unclear how global warming will affect the metabolic balance...change on key ecosystem services. global warming|carbon sequestration|carbon...for the ecological impacts of global warming on individual taxa is now unequivocal...

2010-01-01T23:59:59.000Z

238

Digital Ecosystems: Evolving Service-Orientated Architectures  

E-Print Network (OSTI)

A novel optimisation technique inspired by natural ecosystems is presented, where the optimisation works at two levels: a first optimisation, migration of services which are distributed in a decentralised peer-to-peer network, operating continuously in time; this process feeds a second optimisation based on evolutionary computing that operates locally on single peers and is aimed at finding solutions to satisfy locally relevant constraints. Through this twofold process, the local search is accelerated and will yield better local optima, because the distributed optimisation already provides a good sampling of the search space by making use of computations already performed in other peers with similar constraints. We call this new distributed optimisation architecture a Digital Ecosystem, an Ecosystem Orientated Architecture (EOA) created by extending a Service-Oriented Architecture (SOA) with Distributed Evolutionary Computing (DEC). The Digital Ecosystem will allow services to recombine and evolve over time, ...

Briscoe, G

2007-01-01T23:59:59.000Z

239

Air pollutants effects on forest ecosystems  

SciTech Connect

This book presents the papers given at a conference on the effects of acid rain on forests. The conference was sponsored by the National Acid Precipitation Assessment Program (NAPAP). Topics considered at the conference included the status of US research on acid deposition and its effects contributing factors to the decline of forests, evidence for effects on ecosystems, the effects of air pollutants on forest ecosystems in North America and Europe, forest management, and future scientific research programs and management approaches.

Not Available

1985-01-01T23:59:59.000Z

240

The Tropical Cyclone Diurnal Cycle of Mature Hurricanes  

Science Journals Connector (OSTI)

The diurnal cycle of tropical convection and the tropical cyclone (TC) cirrus canopy has been described extensively in previous studies. However, a complete understanding of the TC diurnal cycle remains elusive and is an area of ongoing research. ...

Jason P. Dunion; Christopher D. Thorncroft; Christopher S. Velden

2014-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "tropical ecosystem model" 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

A Parameter for Forecasting Tornadoes Associated with Landfalling Tropical Cyclones  

Science Journals Connector (OSTI)

The authors develop a statistical guidance product, the tropical cyclone tornado parameter (TCTP), for forecasting the probability of one or more tornadoes during a 6-h period that are associated with landfalling tropical cyclones affecting the ...

Matthew J. Onderlinde; Henry E. Fuelberg

2014-10-01T23:59:59.000Z

242

Diurnal variation of tropical precipitation using five years TRMM data  

E-Print Network (OSTI)

The tropical Rainfall Measuring Mission (TRMM) Microwave Imager (TMI) and Precipitation Radar (PR) data are used in this study to reveal diurnal variations of precipitation over the Tropics (30?S ? 30?N) from January, 1998...

Wu, Qiaoyan

2004-11-15T23:59:59.000Z

243

Physical Characterization of Tropical Oceanic Convection Observed in KWAJEX  

Science Journals Connector (OSTI)

The Tropical Rainfall Measuring Mission (TRMM) Kwajalein Experiment (KWAJEX) was designed to obtain an empirical physical characterization of precipitating convective clouds over the tropical ocean. Coordinated datasets were collected by three ...

Sandra E. Yuter; Robert A. Houze Jr.; Eric A. Smith; Thomas T. Wilheit; Edward Zipser

2005-04-01T23:59:59.000Z

244

Integrated environmental monitoring at remote ecosystems  

SciTech Connect

The first annual report reviews progress to date on the Idaho National Engineering Laboratory(INEL) research project, Integrated Ecosystem and Pollutant Monitoring at Remote Wilderness Study Sites.'' The two primary objectives of this study are to apply, field test, and conceptually evaluate the US Forest Service guidelines for remote ecosystem monitoring and to provide an ongoing database on selected high-elevation ecosystem attributes, including physical, chemical, and biological parameters. The basic criteria for evaluation of the guidelines are usability, cost-effectiveness, data variability, alternative approaches, ecosystem conceptual approach, and quality assurance. The goal of the project is to identify a list of pollutant measurements and ecological attributes that will provide good, quality-assured data about a particular ecosystem. The present report covers each of the major components of the Forest Service guidelines except for regulatory and management constraints and visibility, which are not part of this project. Therefore, progress to date is provided as separate sections of the report for each of the following components: atomspheric environment, soils, aquatic chemistry, aquatic biology, salmonid fish, and plants (including forest ecosystem). 24 refs., 66 figs., 28 tabs.

Bruns, D.A.; O'Rourke, T.P.; Staley, C.S.; White, G.J.; Wiersma, G.B. (EG and G Idaho, Inc., Idaho Falls, ID (USA). Center for Environmental Monitoring and Assessment); Baker, G.A.; Harmon, M.E.; Smith, B.G. (Oregon State Univ., Corvallis, OR (USA). Dept. of Forest Science); Clayton, J.L. (Forest Service, Boise, ID (USA). Intermountain Research Station); Greene, S.E. (Forest Service, Corvallis, OR (USA

1988-08-01T23:59:59.000Z

245

NPP Tropical Forest: Luquillo, Puerto Rico  

NLE Websites -- All DOE Office Websites (Extended Search)

Luquillo, Puerto Rico, 1963-1994 Luquillo, Puerto Rico, 1963-1994 Data Citation Cite this data set as follows: Lugo, A. E., F. Scatena, and C. F. Jordan. 1999. NPP Tropical Forest: Luquillo, Puerto Rico, 1963-1994. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. Description Productivity of lower montane tropical forest has been determined at various study sites within the Luquillo Experimental Forest from 1963 to the present. The Luquillo Experimental Forest is situated in the Luquillo Mountains of eastern Puerto Rico (18.32 N 65.82 W), about 35 km east-southeast of San Juan, and operates under the auspices of the International Institute of Tropical Forestry, Rio Pedras, Puerto Rico. Its total area is about 11,000

246

Tropical Forest Trust | Open Energy Information  

Open Energy Info (EERE)

Tropical Forest Trust Tropical Forest Trust Name Tropical Forest Trust Address The Forest Trust 721 NW Ninth Avenue, Suite 195 Place Portland, Oregon Zip 97209 Region Pacific Northwest Area Year founded 1999 Website http://www.tft-forests.org/ Coordinates 45.5284073°, -122.6803494° 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":45.5284073,"lon":-122.6803494,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

247

Tropical Africa: Total Forest Biomass (By Country)  

NLE Websites -- All DOE Office Websites (Extended Search)

Tropical Africa: Total Forest Biomass (By Country) Tropical Africa: Total Forest Biomass (By Country) image Brown, S., and G. Gaston. 1996. Tropical Africa: Land Use, Biomass, and Carbon Estimates For 1980. ORNL/CDIAC-92, NDP-055. Carbon Dioxide Information Analysis Center, U.S. Department of Energy, Oak Ridge National Laboratory, Oak Ridge, Tennessee, U.S.A. More Maps Calculated Actual Aboveground Live Biomass in Forests (1980) Maximum Potential Biomass Density Land Use (1980) Area of Closed Forests (By Country) Mean Biomass of Closed Forests (By County) Area of Open Forests (By Country) Mean Biomass of Open Forests (By County) Percent Forest Cover (By Country) Population Density - 1990 (By Administrative Unit) Population Density - 1980 (By Administrative Unit) Population Density - 1970 (By Administrative Unit)

248

WMO/CAS/WWW SEVENTH INTERNATIONAL WORKSHOP ON TROPICAL CYCLONES  

E-Print Network (OSTI)

. As outlined by Dunkerton et al. (2009, hereafter DMW09), the problem of tropical cyclogenesis in the real

Smith, Roger K.

249

A Hybrid Atmosphere-Ocean Coupling Approach on the Simulation of Tropical Asian-Pacific Climate  

E-Print Network (OSTI)

A Hybrid Atmosphere-Ocean Coupling Approach on the Simulation of Tropical Asian-Pacific Climate at Manoa, 1680 East West Road, POST Bldg. 4th Floor, Honolulu, HI 96822 #12;ABSTRACT A unique Hybrid spring (in late fall). The encouraging results from this hybrid coupled model indicate

Fu, Joshua Xiouhua

250

Seasonal cycles of O3, CO, and convective outflow at the tropical tropopause  

E-Print Network (OSTI)

gas species. There is a significant seasonal cycle in ozone (O3) at the tropical tropopause, both a radiative transfer model [Fu and Liou, 1992]. This was done at 10 ozone- sonde stations from the SHADOZ network (Southern Hemisphere Additional Ozonesonde ozonesonde stations [Thompson et al., 2003a, 2003b

Thompson, Anne

251

Testing the Role of Radiation in Determining Tropical Cloud-Top Temperature  

Science Journals Connector (OSTI)

A cloud-resolving model is used to test the hypothesis that radiative cooling by water vapor emission is the primary control on the temperature of tropical anvil clouds. The temperature of ice clouds in the simulation can be increased or decreased ...

Bryce E. Harrop; Dennis L. Hartmann

2012-09-01T23:59:59.000Z

252

Analog Ensemble Forecasts of Tropical Cyclone Tracks in the Australian Region  

Science Journals Connector (OSTI)

Tropical cyclone tracks in the Australian basin are predicted by an analog ensemble forecast model. It is self-adapting in its search of optimal ensemble members from historic cyclone tracks by creating a metric that minimizes the error of the ...

Klaus Fraedrich; Christoph C. Raible; Frank Sielmann

2003-02-01T23:59:59.000Z

253

TRACKING TROPICAL CLOUD SYSTEMS FOR THE DIAGNOSIS OF SIMULATIONS BY THE WEATHER RESEARCH AND  

E-Print Network (OSTI)

TRACKING TROPICAL CLOUD SYSTEMS FOR THE DIAGNOSIS OF SIMULATIONS BY THE WEATHER RESEARCH using a satellite cloud tracking algorithm (Boer and Ramanathan, J. Geophys. Res., 1997), and the statistics are compared to those of simulations using the Weather Research and Forecasting (WRF) Model. Using

254

Impact of Convective Organization on the Response of Tropical Precipitation Extremes to Warming  

E-Print Network (OSTI)

Impact of Convective Organization on the Response of Tropical Precipitation Extremes to Warming extremes to warming in organized convection is ex- amined using a cloud-resolving model. Vertical shear, the fractional increase of precipitation extremes is similar to that of surface water vapor, which

Paris-Sud XI, Université de

255

Net primary production of terrestrial ecosystems in China and its equilibrium response to changes in climate and atmospheric CO? concentration  

E-Print Network (OSTI)

The Terrestrial Ecosystem Model (TEM, version 4.0) was used to estimate net primary production (NPP) in China for contemporary climate and NPP responses to elevated CO? and climate changes projected by three atmospheric ...

Xiao, Xiangming.; Melillo, Jerry M.; Kicklighter, David W.; Pan, Yude.; McGuire, A. David.; Helfrich III, J.V.K.

256

Reducing the uncertainties in carbon emissions fromReducing the uncertainties in carbon emissions from tropical deforestation -the BIOMASS mission  

E-Print Network (OSTI)

from tropical deforestation - the BIOMASS mission Shaun Quegan University of Sheffield x average biomassCem = deforested area x average biomass (UN Framework Convention on Climate Change Good Practice Guide 2003) #12;How well is biomass known? Model Model + SatelliteInterpolation Model

257

Application of sewage sludge to non-agricultural ecosystems: Assessment of contaminant risks to wildlife  

SciTech Connect

This report is part of a larger study evaluating nutrient and contaminant impacts associated with the land application of biosolids in four non-agricultural ecosystems: Pacific Northwest forests, semi-arid rangelands, eastern deciduous forests, and southeasternpine plantations. Because contaminants in biosolids may be taken up by biota and transferred through the food web, they may present a risk to wildlife. Biosolids application scenarios that reflect actual practices in each ecosystem were developed. Concentrations of contaminants in biosolids were obtained from the US EPA`s 1988 National Sewage Sludge Survey. Soil-biota uptake factors for contaminants in sludge were developed from contaminant studies performed in each ecosystem type. Where ecosystem-specific data were unavailable, more generalized factors were used. Endpoints were selected that reflected species expected to be present in each ecosystem. Four trophic groups were considered: herbivores (e.g., deer) vermivores (earthworm-consumers; e.g., shrews), insectivores (e.g., songbirds), and carnivores (e.g., fox). Contaminant concentrations in wildlife foods were estimated using the uptake factors. These estimates were then incorporated into models to estimate the contaminant exposure for endpoints in each trophic group in each ecosystem. Exposure estimates were then compared to NOAELs and LOAELs to determine the nature and magnitude of risks that biosolids may present to wildlife.

Sample, B.E.; Efroymson, R.A.; Barnthouse, L.W. [Oak Ridge National Lab., TN (United States). Environmental Sciences Div.; Daniel, F.B. [Environmental Protection Agency, Cincinnati, OH (United States). Office of Research and Development

1995-12-31T23:59:59.000Z

258

Alien plant invasions in tropical and sub-tropical savannas: patterns, processes and prospects  

E-Print Network (OSTI)

Tanzania Species Family Alien plant invasions in savannasLo pez-Olmedo et al. 2007). Alien plant invasions in Africanspecies of naturalised alien plants for tropical savannas in

Foxcroft, Llewellyn C.; Richardson, David M.; Rejmánek, Marcel; Pyšek, Petr

2010-01-01T23:59:59.000Z

259

Future Changes in the Western North Pacific Tropical Cyclone Activity Projected by a Multidecadal Simulation with a 16-km Global Atmospheric GCM  

Science Journals Connector (OSTI)

How tropical cyclone (TC) activity in the northwestern Pacific might change in a future climate is assessed using multidecadal Atmospheric Model Intercomparison Project (AMIP)-style and time-slice simulations with the ECMWF Integrated Forecast ...

Julia V. Manganello; Kevin I. Hodges; Brandt Dirmeyer; James L. Kinter III; Benjamin A. Cash; Lawrence Marx; Thomas Jung; Deepthi Achuthavarier; Jennifer M. Adams; Eric L. Altshuler; Bohua Huang; Emilia K. Jin; Peter Towers; Nils Wedi

2014-10-01T23:59:59.000Z

260

Overlooked sedimentary particles from tropical weathering environments  

Science Journals Connector (OSTI)

...Island, Solimoes River, Brazil. B: Thin-section...Negro and Soli- m es, Brazil: Implications for the...modern sand along a high-energy tropical coast: Baixada...gu , Rio de Janeiro, Brazil: Journal of South American...of the Environment and Renewable Natural Resources, and...

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While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
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261

The multiple vortex nature of tropical cyclogenesis  

E-Print Network (OSTI)

) __________________________ __________________________ John Nielsen-Gammon Craig Epifanio (Chair of Committee) (Member) __________________________ __________________________ Fuqing Zhang Hongxing Liu (Member) (Member) December 2004 Major Subject: Atmospheric Sciences... iii ABSTRACT The Multiple Vortex Nature of Tropical Cyclogenesis. (December 2004) Jason Allen Sippel, B.S., Texas A&M University Chair of Advisory Committee: Dr. John Nielsen-Gammon This thesis contains an observational analysis...

Sippel, Jason Allen

2005-02-17T23:59:59.000Z

262

International Crops Research Institute for the Semi Arid Tropics | Open  

Open Energy Info (EERE)

Crops Research Institute for the Semi Arid Tropics Crops Research Institute for the Semi Arid Tropics Jump to: navigation, search Name International Crops Research Institute for the Semi-Arid Tropics Place India Sector Biofuels Product Biofuels ( Academic / Research foundation ) References International Crops Research Institute for the Semi-Arid Tropics[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. International Crops Research Institute for the Semi-Arid Tropics is a company located in India . References ↑ "International Crops Research Institute for the Semi-Arid Tropics" Retrieved from "http://en.openei.org/w/index.php?title=International_Crops_Research_Institute_for_the_Semi_Arid_Tropics&oldid=347036

263

Deep Atomic Binding (DAB) Approach in Interpretation of Fission Products Behavior in Terrestrial and Water Ecosystems  

SciTech Connect

A large number of studies and models were established to explain the fission products (FP) behavior within terrestrial and water ecosystems, but a number of behaviors were non understandable, which always attributed to unknown reasons. According to DAB hypothesis, almost all fission products behaviors in terrestrial and water ecosystems could be interpreted in a wide coincidence. The gab between former models predictions, and field behavior of fission products after accidents like Chernobyl have been explained. DAB represents a tool to reduce radio-phobia as well as radiation protection expenses. (author)

Ajlouni, Abdul-Wali M.S. [Ministry of Energy and Mineral Resources, Amman 11814 (Jordan)

2006-07-01T23:59:59.000Z

264

Ecosystem Management Team | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Ecosystem Management Team Ecosystem Management Team Ecosystem Management Team Objectives The U.S. Department of Energy (DOE) is evaluating methods of reducing the long-term costs and risks associated with operating, monitoring, and managing its legacy sites. For example, vegetation management is a significant and growing component of annual maintenance costs at legacy sites. Long-term surveillance plans often require suppression of plant growth on rock-covered disposal cells because scientists have concerns that (1) plants' roots may increase water percolation through compacted soil layers into buried contaminated material (and hence, increase the potential for spreading contamination), or (2) roots may take up and disperse buried contaminants (e.g., wind may spread contaminated plant materials or

265

Drivers of phytoplankton, bacterioplankton, and zooplankton carbon biomass in tropical hydroelectric reservoirs  

Science Journals Connector (OSTI)

Abstract Studies of carbon sources in plankton communities are important because carbon content has become the main currency used in functional studies of aquatic ecosystems. We evaluated the contribution to the total organic carbon pool from different plankton communities (phytoplankton, bacterioplankton, and zooplankton – C-biota) and its drivers in eight tropical hydroelectric reservoirs with different trophic and hydrological status and different physical features. Our systems were separated into three groups based on trophic status and water residence time: (i) mesotrophic with low residence time (ML); (ii) mesotrophic with high residence time (MH); and (iii) eutrophic with low residence time (EL). Our hypothesis that reservoirs with low water residence times and low nutrient concentrations would show the lowest C-biota was supported. Phytoplankton carbon (C-phy) showed the highest concentrations in the EL, followed by MH and ML systems. The EL group also showed significantly higher zooplankton carbon (C-zoo). No significant difference was observed for bacteria carbon (C-bac) among the three system groups. In addition to trophic status and water residence time, regression analyses revealed that water temperature, light, pH, and dissolved organic carbon concentrations were the main drivers of plankton communities in these large tropical hydroelectric reservoirs.

Lúcia H.S. Silva; Vera L.M. Huszar; Marcelo M. Marinho; Luciana M. Rangel; Jandeson Brasil; Carolina D. Domingues; Christina C. Branco; Fábio Roland

2014-01-01T23:59:59.000Z

266

E-Print Network 3.0 - arctic microbial ecosystems Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

microbial ecosystems Page: << < 1 2 3 4 5 > >> 1 Microbial ecosystem responses to rapid climate change in the Arctic Summary: COMMENTARY Microbial ecosystem responses to rapid...

267

Visualizing Storms from NCAR's Atmosphere Model at NERSC  

NLE Websites -- All DOE Office Websites (Extended Search)

Atmosphere Model Visualizing Storms from NCAR's Atmosphere Model CCSM-sprabhat.png Global warming will likely change the statistics of tropical cyclones and hurricanes. In this...

268

Human Impact on Freshwater Ecosystem Services: A Global Perspective  

Science Journals Connector (OSTI)

Human environmental change influences freshwaters as well as the regulating, provisioning, and cultural services that ecosystems provide worldwide. Here, we assess the global human impact on the potential value of six freshwater ecosystem services (ES) ...

Walter K. Dodds; Joshuah S. Perkin; Joseph E. Gerken

2013-07-25T23:59:59.000Z

269

Managing for ocean biodiversity to sustain marine ecosystem services  

E-Print Network (OSTI)

Managing a complex ecosystem to balance delivery of all of its services is at the heart of ecosystem-based management. But how can this balance be accomplished amidst the conflicting demands of stakeholders, managers, and policy makers? In marine...

Palumbi, Stephen R.; Sandifer, Paul A.; Allan, J. David; Beck, Michael W.; Fautin, Daphne G.; Fogarty, Michael J.; Halpern, Benjamin S.; Incze, Lewis S.; Leong, Jo-Ann C.; Norse, Elliott; Stachowicz, John J.; Wall, Diana H.

2009-05-01T23:59:59.000Z

270

Marine biodiversity–ecosystem functions under uncertain environmental futures  

Science Journals Connector (OSTI)

...Montoya and Dave Raffaelli Marine biodiversity-ecosystem functions under...dredging-implications for marine biodiversity. Annu. Rev. Ecol. Syst...in this Data Supplement: Marine biodiversity-ecosystem processes under...

2010-01-01T23:59:59.000Z

271

Ecosystem approach to inland fisheries: research needs and implementation strategies  

Science Journals Connector (OSTI)

...fisheries into ecosystem approaches for management of inland waters...natural and social science approaches to address coupled...ecosystem approaches for management of inland waters...natural and social science approaches to address coupled...

2011-01-01T23:59:59.000Z

272

Fisheries in the Southern Ocean: an ecosystem approach  

Science Journals Connector (OSTI)

...approach to management. This approach has been extended...primarily with the science-related...ecosystem approach to the management of the living...primarily with the science-related...ecosystem approach to the management of the living...

2007-01-01T23:59:59.000Z

273

Promotion of ecosystem carbon sequestration by invasive predators  

Science Journals Connector (OSTI)

...ecology Promotion of ecosystem carbon sequestration by invasive predators David...determinants of ecosystem C sequestration. carbon|island ecology|rats...of nitrogen deposition on carbon sequestration in European forests and forest...

2007-01-01T23:59:59.000Z

274

2 Valuing ecosystem services Benefits, values, space and time  

E-Print Network (OSTI)

of evidence suggests that in the twenty-first century we will face a number of pressing and interrelated considered an ecosystem service versus other con- cepts in the literature, such as ecosystem processes

Vermont, University of

275

UNEP MOOC Disasters and Ecosystems: Resilience in a Changing Climate  

Energy.gov (U.S. Department of Energy (DOE))

The United Nations Environment Programme (UNEP) is launching the first Massive Open Online Course (MOOC) on Disasters and Ecosystems, which features ecosystem-based solutions for disaster risk reduction and climate change adaptation, case studies, guest speakers, etc.

276

Eutrophication in coastal marine ecosystems (B. B. Jorgensen and K ...  

Science Journals Connector (OSTI)

Margin Ecosystem Research program (of NSF), Coastal Ocean Pro- cesses program ... nutrient reductions will lead to restoration, but estimates here sug- gest that .... groups of organisms that are important to aquatic ecosystems; this capability ...

277

JIANGXIAO QIU Ecosystem and Landscape Ecology Lab  

E-Print Network (OSTI)

focus: Trade-offs and synergies among ecosystem services in an urbanizing agricultural landscape-Madison Project: NSF Water Sustainability and Climate (WSC)--Climate change, shifting land use, and urbanization Center for Eco-Environmental Sciences, Beijing China Thesis: Landscape pattern and urban morphology

Turner, Monica G.

278

Oil and Planktonic Ecosystems [and Discussion  

Science Journals Connector (OSTI)

1 June 1982 research-article Oil and Planktonic Ecosystems [and Discussion] J. Davenport M...Gray D. J. Crisp J. M. Davies Information about the effects of oil and oil products upon planktonic organisms is much sparser than for nekton...

1982-01-01T23:59:59.000Z

279

NPP Tropical Forest: Khao Chong, Thailand  

NLE Websites -- All DOE Office Websites (Extended Search)

Khao Chong, Thailand, 1962-1965 Khao Chong, Thailand, 1962-1965 [PHOTOGRAPH] Photograph: Eye-level view of forest interior at Khao Chong (click on the photo to view a series of images from this site) Data Citation Cite this data set as follows: Kira, T. 1998. NPP Tropical Forest: Khao Chong, Thailand, 1962-1965. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. Description Productivity of a tropical rain forest was determined at the Khao Chong study site, under the auspices of the Joint Thai-Japanese Biological Expedition to South-East Asia. Biomass increment within a 40 m x 40 m study area for all trees greater than 4.5 cm dbh (diameter at breast height, 130 cm) was monitored between

280

NPP Tropical Forest: Manaus, Brazil [Amazonas]  

NLE Websites -- All DOE Office Websites (Extended Search)

Manaus, Brazil, 1963-1990 Manaus, Brazil, 1963-1990 Data Citation Cite this data set as follows: Piedade, M. T. F., and W. J. Junk. 2001. NPP Tropical Forest: Manaus, Brazil, 1963-1990. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. Description Biomass and components of productivity for several types of tropical forest were determined for a number of study sites around Manaus, Brazil, from 1963 to the present. The study sites include several (0.2 ha) stands of terra firme (dry land) forest at " 64" to the northeast of Manaus, towards Itacoatiara (approximately 3.0 S 59.7 W, near the " Egler" Reserve), riverine forest in the 10 km x 10 km " Reserve" (2.95 S 59.95 W, 26 km

Note: This page contains sample records for the topic "tropical ecosystem model" 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

NPP Tropical Forest: Marafunga, Papua New Guinea  

NLE Websites -- All DOE Office Websites (Extended Search)

Marafunga, Papua New Guinea, 1970-1971 Marafunga, Papua New Guinea, 1970-1971 [PHOTOGRAPH] Photograph: Profile of tropical forest at Marafunga (click on the photo to view a series of images from this site) Data Citation Cite this data set as follows: Edwards, P. J., and P. J. Grubb. 1999. NPP Tropical Forest: Marafunga, Papua New Guinea, 1970-1971. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. Description Biomass and nutrient content of different vegetation components and soil for a lower montane secondary rain forest were determined in 1970-71 at Marafunga in the highlands of Papua New Guinea. The only component of net primary production (NPP) determined at Marafunga was litterfall, although

282

NPP Tropical Forest: Magdalena Valley, Colombia  

NLE Websites -- All DOE Office Websites (Extended Search)

Magdalena Valley, Colombia, 1970-1971 Magdalena Valley, Colombia, 1970-1971 Data Citation Cite this data set as follows: Folster, H. 1999. NPP Tropical Forest: Magdalena Valley, Colombia, 1970-1971. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. Description Biomass, litterfall, and nutrient content of above-ground vegetation and soil were determined for a tropical seasonal evergreen forest at Magdalena Valley, Colombia, during an 18-month period in 1970 and 1971. The study was sponsored by the German Research Foundation. Of primary interest were biomass and nutrient dynamics of a forest stand that had developed atop a perched water table on a typical valley terrace. Perched water tables give rise to pseudogley soils with low pH, prolonged

283

Planning the Next Generation of Arctic Ecosystem Experiments  

SciTech Connect

Climate Change Experiments in High-Latitude Ecosystems; Fairbanks, Alaska, 13-14 October 2010; A 2-day climate change workshop was held at the International Arctic Research Center, University of Alaska Fairbanks. The workshop, sponsored by Biological and Environmental Research, Office of Science, U.S. Department of Energy (DOE), was attended by 45 subject matter experts from universities, DOE national laboratories, and other federal and nongovernmental organizations. The workshop sought to engage the Arctic science community in planning for a proposed Next-Generation Ecosystem Experiments (NGEE-Arctic) project in Alaska (http:// ngee.ornl.gov/). The goal of this activity is to provide data, theory, and models to improve representations of high-latitude terrestrial processes in Earth system models. In particular, there is a need to better understand the processes by which warming may drive increased plant productivity and atmospheric carbon uptake and storage in biomass and soils, as well as those processes that may drive an increase in the release of methane (CH{sub 4}) and carbon dioxide (CO{sub 2}) through microbial decomposition of soil carbon stored in thawing permafrost. This understanding is required to quantify the important feedback mechanisms that define the role of terrestrial processes in regional and global climate.

Hinzman, Larry D [International Arctic Research Center; Wilson, Cathy [Los Alamos National Laboratory (LANL)

2011-01-01T23:59:59.000Z

284

The creative city matrix: a framework for urban knowledge ecosystems  

Science Journals Connector (OSTI)

Knowledge work, creativity and innovation have turned into major urban industries. But how do urban environments activate their potentials and production processes? What are the constituting elements of a 'creative city', and how are they interrelated? The article presents a theoretical framework for the post-industrial creative city as a knowledge ecosystem. A new model is presented which categorises the constitutive components of knowledge environments according to parameters of spatial, organisational, and economic value. Presented in the format of a three-dimensional matrix, the model allows a holistic representation of urban knowledge ecosystems and their creative environments. The matrix enables different applications and scales of analysis: a synchronous view of creative urban environments in total, a diachronic view highlighting the evolution of companies or micro-environments, and also a profiling of single local components. Depending on these scaling, the matrix can be used either as analytical tool to investigate properties of individual components within a city's knowledgescape, or as a strategic device for general knowledge-based city development.

Liudmila Gridneva; Jörg Rainer Noennig

2014-01-01T23:59:59.000Z

285

Revisiting Odum (1956): A synthesis of aquatic ecosystem metabolism  

Science Journals Connector (OSTI)

Few syntheses of aquatic ecosystem metabolism have been completed since. ... Results will be valuable for management, restoration, and carbon budgets, ...

286

Global change tipping points: above- and below-ground biotic interactions in a low diversity ecosystem  

Science Journals Connector (OSTI)

...ground which, in turn, feedback to ecosystem recovery and restoration. In contrast to these more complex ecosystems of high diversity, the terrestrial...materials between terrestrial and aquatic ecosystems. Ecosystems. 4, 421-429...

2007-01-01T23:59:59.000Z

287

Nutrient enrichment, biodiversity loss, and consequent declines in ecosystem productivity  

E-Print Network (OSTI)

the species compo- sitions, biodiversity, and functioning of terrestrial and marine ecosystems worldwide (1, freshwater, and marine ecosystems (8­15). This has raised concerns that contemporary biodiversity declinesNutrient enrichment, biodiversity loss, and consequent declines in ecosystem productivity Forest

Minnesota, University of

288

Impacts of Biodiversity Loss on Ocean Ecosystem Services  

E-Print Network (OSTI)

fisheries data to test how biodiversity loss affects marine ecosystem services across temporal and spatial the effects of changes in marine biodiversity on fundamental ecosystem services by combining available dataImpacts of Biodiversity Loss on Ocean Ecosystem Services Boris Worm,1 * Edward B. Barbier,2 Nicola

Stachowicz, Jay

289

"Green Gold" pasture ecosystem management programme 16 .06.2008  

E-Print Network (OSTI)

1 "Green Gold" pasture ecosystem management programme 1 16 .06.2008 Pastoral system and herders communities Professor D.Dorligsuren Programme Coordinator "Green Gold" Pasture Ecosystem Management Programme Swiss Agency for Cooperation and Development, Mongolia "Green Gold" pasture ecosystem management

290

White Space Ecosystem: A Secondary Network Operator's Perspective  

E-Print Network (OSTI)

1 White Space Ecosystem: A Secondary Network Operator's Perspective Yuan Luo, Lin Gao, and Jianwei Huang Abstract--The successful deployment of a TV white space network requires the coordination-users), which form the White Space Ecosystem. In this paper, we study the white space ecosystem from

Huang, Jianwei

291

RESEARCH ARTICLE Response of an aridland ecosystem to interannual climate  

E-Print Network (OSTI)

on ecosystem structure and function. In the south- western US, interactions among regional climate drivers (e drivers strongly affect the distribution and composition of ecosystems worldwide. Indeed, potential to which increased climate variability will affect ecosystem processes requires long-term analysis

292

Status of the Coral Reef Ecosystems of Guam  

E-Print Network (OSTI)

of U.S. and international coral reef ecosystems. The CRCA also required that the National OceanicStatus of the Coral Reef Ecosystems of Guam By Val Porter, Trina Leberer, Mike Gawel, Jay Gutierrez Marine Laboratory Technical Report No. 113 October 2005 #12;Status of the Coral Reef Ecosystems of Guam

Mcilwain, Jenny

293

Ecosystem development explained by competition within and between material cycles  

Science Journals Connector (OSTI)

...productivities, plant and decomposer biomasses, and ecosystem cycling e ciency...increasing ecosystem productivity, biomass and cycling e ciency, thus...loblolly pine (Pinus taeda L.) plantation ecosystems: the rsttwenty...Biol. 136, 337^356. Wood, T., Bormann, F. H...

1998-01-01T23:59:59.000Z

294

Toward an Integrated Classification of Ecosystems: Defining Opportunities for Managing  

E-Print Network (OSTI)

ABSTRACT / Many of the aquatic and terrestrial ecosystems of the Pacific Northwest United States have been) a framework for experimentation and demonstration of commitment and untested restoration tech- niques. Aquatic. Changes in forest ecosystems of the region seem to mirror those of aquatic ecosystems. Many forests have

295

Prospects for monitoring freshwater ecosystems towards the 2010 targets  

Science Journals Connector (OSTI)

...al. 2003), aquatic and floodplain...wetland restoration success (Shuman...of freshwater ecosystems and species...inland water ecosystems. In Technical...analysis of global ecosystems: freshwater...V.HUse of aquatic insects in biomonitoring...monitoring wetland restoration success. Restor...

2005-01-01T23:59:59.000Z

296

8. Discussion This thesis has quantified the ecosystem carbon stocks of the Nhambita  

E-Print Network (OSTI)

destructive to woody biomass: aboveground carbon stocks can only be330 maintained under high intensity fires200 8. Discussion This thesis has quantified the ecosystem carbon stocks of the Nhambita area findings of this thesis and discuss some of the implications for 1) modelling the carbon cycle of miombo

297

The biogeochemistry of tropical lakes: A case study from Lake Matano, Indonesia Sean A. Crowe  

E-Print Network (OSTI)

, Lawrence, Kansas, 66047 Abstract We examined the chemical composition of the water column of Lake Matano), but below U.S. Environmental Protection Agency guidelines for aquatic ecosystems. The concentration. Flux calculations using a one-dimensional transport- reaction model for the water column fail

Long, Bernard

298

Indices of biotic integrity in stated preference valuation of aquatic ecosystem services  

Science Journals Connector (OSTI)

Stated preference surveys often give minimal attention to distinctions between intermediate and final ecosystem services, leading to the potential for welfare estimates that overlook, misrepresent or double count associated values. This paper illustrates potential mechanisms through which multimetric indexes of the type developed in the ecological literature, here an index of biotic integrity, can be used within stated preference survey scenarios to both improve the validity of survey responses and provide otherwise unavailable information on willingness to pay for intermediate and final ecosystem services. We illustrate the approach using a choice experiment application to the restoration of migratory fish in a Rhode Island watershed. Where assumptions of the model hold, results can allow transparent disentanglement and estimation of marginal values for both intermediate and final ecosystem services.

Robert J. Johnston; Kathleen Segerson; Eric T. Schultz; Elena Y. Besedin; Mahesh Ramachandran

2011-01-01T23:59:59.000Z

299

Novel biodiversity of natural products-producing tropical marine cyanobacteria.  

E-Print Network (OSTI)

??During the last three decades, tropical marine cyanobacteria have emerged as an extraordinarily prolific source of promising biomedical natural products (NPs). Creative endeavors have been… (more)

Engene, Niclas

2011-01-01T23:59:59.000Z

300

Clarence Strait Tidal Energy Project, Tenax Energy Tropical Tidal...  

Open Energy Info (EERE)

Energy Tropical Tidal Test Centre, Jump to: navigation, search 1 Retrieved from "http:en.openei.orgwindex.php?titleClarenceStraitTidalEnergyProject,TenaxEnergyTropica...

Note: This page contains sample records for the topic "tropical ecosystem model" 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

Ocean dynamics and thermodynamics in the tropical Indo- Pacific region.  

E-Print Network (OSTI)

??The Indonesian archipelago links the tropical Indian and western Pacific Oceans, so transmission of oceanic and atmospheric energy across the archipelago has the potential to… (more)

Drushka, Kyla

2011-01-01T23:59:59.000Z

302

Validating Atmospheric Reanalysis Data Using Tropical Cyclones as Thermometers  

Science Journals Connector (OSTI)

Capsule: Tropical cyclones are used as traveling thermometers to globally sample upper-tropospheric temperatures and help mitigate uncertainties due to discrepancies among different reanalysis data products.

James P. Kossin

303

Terrestrial Ecosystems extend from uplands to wetlands, which form the interface between terrestrial and aquatic ecosystems. This field  

E-Print Network (OSTI)

terrestrial and aquatic ecosystems. This field of study provides students with an understanding of ecological restoration, particularly as it relates to restoring and managing the kinds of ecosystems found, restoration, consulting and education pertaining to a wide range of forest ecosystems in the governmental

Edwards, Paul N.

304

Carbon sequestration potential of tropical pasture compared with afforestation in Panama  

E-Print Network (OSTI)

Carbon sequestration potential of tropical pasture compared with afforestation in Panama S E B) to estimate the carbon sequestration potential of tropical pasture compared with afforestation; and (3 show the potential for considerable carbon sequestration of tropical afforestation and highlight

Potvin, Catherine

305

Comparison of reduced-order, sequential and variational data assimilation methods in the tropical Pacific Ocean  

E-Print Network (OSTI)

This paper presents a comparison of two reduced-order, sequential and variational data assimilation methods: the SEEK filter and the R-4D-Var. A hybridization of the two, combining the variational framework and the sequential evolution of covariance matrices, is also preliminarily investigated and assessed in the same experimental conditions. The comparison is performed using the twin-experiment approach on a model of the Tropical Pacific domain. The assimilated data are simulated temperature profiles at the locations of the TAO/TRITON array moorings. It is shown that, in a quasi-linear regime, both methods produce similarly good results. However the hybrid approach provides slightly better results and thus appears as potentially fruitful. In a more non-linear regime, when Tropical Instability Waves develop, the global nature of the variational approach helps control model dynamics better than the sequential approach of the SEEK filter. This aspect is probably enhanced by the context of the experiments in tha...

Robert, Céline; Verron, Jacques

2006-01-01T23:59:59.000Z

306

The origins of tropical marine biodiversity  

Science Journals Connector (OSTI)

Recent phylogeographic studies have overturned three paradigms for the origins of marine biodiversity. (i) Physical (allopatric) isolation is not the sole avenue for marine speciation: many species diverge along ecological boundaries. (ii) Peripheral habitats such as oceanic archipelagos are not evolutionary graveyards: these regions can export biodiversity. (iii) Speciation in marine and terrestrial ecosystems follow similar processes but are not the same: opportunities for allopatric isolation are fewer in the oceans, leaving greater opportunity for speciation along ecological boundaries. Biodiversity hotspots such as the Caribbean Sea and the Indo-Pacific Coral Triangle produce and export species, but can also accumulate biodiversity produced in peripheral habitats. Both hotspots and peripheral ecosystems benefit from this exchange in a process dubbed biodiversity feedback.

Brian W. Bowen; Luiz A. Rocha; Robert J. Toonen; Stephen A. Karl

2013-01-01T23:59:59.000Z

307

EcoSystem Corporation | Open Energy Information  

Open Energy Info (EERE)

EcoSystem Corporation EcoSystem Corporation Jump to: navigation, search Name EcoSystem Corporation Place Minneapolis, Minnesota Zip 55415 Sector Carbon, Efficiency Product Minnesota-based OTC-listed company developing a technology to increase yields and efficiency, while also decreasing energy consumption and carbon intensity at conventional corn ethanol plants. Coordinates 44.979035°, -93.264929° 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":44.979035,"lon":-93.264929,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

308

Climate change and tropical biodiversity: a new focus  

E-Print Network (OSTI)

Climate change and tropical biodiversity: a new focus Jedediah Brodie1 , Eric Post2 and William F, Australia Considerable efforts are focused on the consequences of climate change for tropical rainforests climatic changes and human land use) remain understudied. Key concerns are that aridification could

Wisenden, Brian D.

309

Error propagation and scaling for tropical forest biomass estimates  

Science Journals Connector (OSTI)

...propagation and scaling for tropical forest biomass estimates Jerome Chave 1 * Richard Condit...34002-0948, USA The above-ground biomass (AGB) of tropical forests is a crucial...inferences about long-term changes in biomass stocks, it is essential to know the uncertainty...

2004-01-01T23:59:59.000Z

310

TROPICAL CYCLONE RESEARCH REPORT TCRR 2: 131 (2013)  

E-Print Network (OSTI)

circulation (e.g., Marks and Shay 1998). There have been considerable advances in computer technology overTROPICAL CYCLONE RESEARCH REPORT TCRR 2: 1­31 (2013) Meteorological Institute Ludwig Maximilians University of Munich Paradigms for tropical cyclone intensification Michael T. Montgomerya 1 and Roger K

Smith, Roger K.

311

Cyclone Center Using Crowdsourcing to Determine Tropical Cyclone Intensity  

E-Print Network (OSTI)

Cyclone Center Using Crowdsourcing to Determine Tropical Cyclone Intensity Almost all tropical cyclones are not directly observed. Agency estimates of storm position and intensity are not homogeneous in time and space. Cyclone Center uses crowdsourcing to collect data that will lead to a consistent

Hennon, Christopher C.

312

Chapter Number1 Biomass Prediction in Tropical Forests:2  

E-Print Network (OSTI)

Chapter Number1 Biomass Prediction in Tropical Forests:2 The Canopy Grain Approach3 Christophe France9 1. Introduction10 The challenging task of biomass prediction in dense and heterogeneous tropical different forest structures may indeed present similar above ground biomass (AGB) values.13 This is probably

Paris-Sud XI, Université de

313

Heating in the tropical atmosphere: what level of detail is critical for accurate MJO simulations in GCMs?  

E-Print Network (OSTI)

Heating in the tropical atmosphere: what level of detail is critical for accurate MJO simulations processes that affect heating in some facet. In this study, we examine various heating adjustments in Community Atmospheric Model version 4 (CAM4) to determine what the vertical and horizontal heating

314

Using stakeholders’ perspective of ecosystem services and biodiversity features to plan a marine protected area  

Science Journals Connector (OSTI)

Abstract The definition of a common vision that includes social and environmental goals, ecosystem services and/or biodiversity features that people are interested in maintaining or restoring is a great challenge for marine protected areas (MPAs). Recent initiatives have promoted broadening the focus from biodiversity conservation alone to the conservation of both ecosystem services and biodiversity, indicating that this integration should improve support and compliance from stakeholders. Using a Multiple-Use Coastal Marine Protected Area recently proposed in northern Chile, we investigated (i) stakeholders’ perceptions of the valuation of ecosystem services, threats to their provision, and the prioritization of ecosystem services, biodiversity features, and uses in a planning scenario, and (ii) stakeholders’ expectations for the establishment of a new MPA. The perceptions of different groups of stakeholders were compared and statistically analyzed, and the relationships among prioritizations were studied using a network approach. Stakeholders identified and valued 13 ecosystem services, 28 biodiversity features, 20 uses and activities, and 22 threats. Significant differences among the valuations and prioritizations of different stakeholder groups were attributable principally to artisanal fishermen's perceptions of some components that are directly related to their activities and livelihoods. High expectations of benefits from a new MPA implementation were observed for all categories of stakeholders. To relate the different valuated components, we proposed a network-based conceptual model that reduces complexity, and also as a strategy to communicate relationships and trade-offs occurring in this particular social–ecological system to the several stakeholders. We strongly recommend early stakeholder engagement so as to understand the variability in environmental perceptions and then reflect that variation in the planning and management actions of MPAs, thus improving support for their implementation and achieving conservation and societal goals. Our findings indicate that stakeholders’ perceptions and prioritizations of ecosystem services, biodiversity features and uses should be used as the basis for starting the MPA implementation and planning process.

P. Francisco Cárcamo; Rosa Garay-Flühmann; Francisco A. Squeo; Carlos F. Gaymer

2014-01-01T23:59:59.000Z

315

The Energy Department Prepares for Tropical Storm Karen | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

The Energy Department Prepares for Tropical Storm Karen The Energy Department Prepares for Tropical Storm Karen The Energy Department Prepares for Tropical Storm Karen October 4, 2013 - 3:00pm Addthis Marissa Newhall Marissa Newhall Managing Editor, Energy.gov What does this mean for me? Follow the latest news on Tropical Storm Karen by visiting the FEMA blog. Stay up-to-date on energy delivery impacts by reading twice-daily situation reports from the Energy Department. Visit ready.gov for more information about emergency preparedness. Editor's note: As of Monday, October 7, 2013, Energy Department reporting about Tropical Storm Karen has concluded, and no additional situation reports will be posted. The Department of Energy (DOE) is working closely with the Federal Emergency Management Agency (FEMA) and in support of state and local

316

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

SciTech Connect

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

317

Gulf of Mexico Regional Ecosystem Restoration Strategy, Gulf Coast Ecosystem Restoration Task Force, December 2011  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

c c Gulf of Mexico Regional Ecosystem Restoration Strategy Gulf Coast Ecosystem Restoration Task Force December 2011 G u l f C o a s t E c o s y s t e m R e s t o r a t i o n T a s k F o r c e Cover Photo Credits: Brown pelicans: U.S. Fish and Wildlife Service Volunteer planting marsh grass: U.S. Fish and Wildlife Service, Steve Hillebrand Turtle: Texas Parks and Wildlife Department Wetlands: U.S. Fish and Wildlife Service Boats: Mississippi Development Authority, Tourism Division Nothing in this document is intended to create private rights of action or other enforceable individual legal rights. ©2011 Google Earth Map of Gulf of Mexico Coast US Gulf of Mexico Regional Ecosystem Restoration Strategy Gulf Coast Ecosystem Restoration Task Force December 2011 G u l f C o a s t E c o s y s t e m R e

318

Kootenai River Ecosystem Finding of No Significant Impact (FONSI)  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Kootenai River Ecosystem Kootenai River Ecosystem Finding of No Significant Impact (FONSI) June 2005 1 Department of Energy BONNEVILLE POWER ADMINISTRATION Kootenai River Ecosystem Project Finding of No Significant Impact (FONSI) Summary: Bonneville Power Administration (BPA) is proposing to fund the Kootenai River Ecosystem Project. With this funding the Kootenai Tribe of Idaho (KTOI) and Idaho Fish and Game (IDFG) would add liquid nitrogen and phosphorus to the Kootenai River from late June through September for up to five years to replace nutrients lost to the hydrosystem. The goal of this project is to help enhance native fish populations and river health. The nutrients are expected to stimulate production in the Kootenai River's

319

Processes that influence biodiversity, ecosystem functioning, and stability in grasslands.  

E-Print Network (OSTI)

??Biodiversity is rapidly declining worldwide, and this may lead to subsequent declines in ecosystem functioning and stability. Here I consider whether: (i) stabilizing species interactions,… (more)

Isbell, Forest Isaac

2010-01-01T23:59:59.000Z

320

Processes that influence biodiversity, ecosystem functioning, and stability in grasslands.  

E-Print Network (OSTI)

?? Biodiversity is rapidly declining worldwide, and this may lead to subsequent declines in ecosystem functioning and stability. Here I consider whether: (i) stabilizing species… (more)

Isbell, Forest Isaac

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "tropical ecosystem model" 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

Light and photosynthesis in aquatic ecosystems (J. T. O. Kirk ...  

Science Journals Connector (OSTI)

Light and photosynthesis in aquatic ecosystems. Cambridge Univ. Press, Cam- bridge and New York. 401 p. $82.50. Although they “symbiotically” appear in ...

322

2010 U.S. Smart Grid Vendor Ecosystem  

Energy Savers (EERE)

Market Takeaways: The Smart Grid vendor ecosystem is an increasingly interdependent web of companies. Vendors of Advanced Metering Infrastructure (AMI) products (meters,...

323

Carbon Isotopic Studies of Assimilated and Ecosystem Respired CO2 in a Southeastern Pine Forest  

SciTech Connect

Carbon dioxide is the major “greenhouse” gas responsible for global warming. Southeastern pine forests appear to be among the largest terrestrial sinks of carbon dioxide in the US. This collaborative study specifically addressed the isotopic signatures of the large fluxes of carbon taken up by photosynthesis and given off by respiration in this ecosystem. By measuring these isotopic signatures at the ecosystem level, we have provided data that will help to more accurately quantify the magnitude of carbon fluxes on the regional scale and how these fluxes vary in response to climatic parameters such as rainfall and air temperature. The focus of the MBL subcontract was to evaluate how processes operating at the physiological and ecosystem scales affects the resultant isotopic signature of plant waxes that are emitted as aerosols into the convective boundary layer. These wax aerosols provide a large-spatial scale integrative signal of isotopic discrimination of atmospheric carbon dioxide by terrestrial photosynthesis (Conte and Weber 2002). The ecosystem studies have greatly expanded of knowledge of wax biosynthetic controls on their isootpic signature The wax aerosol data products produced under this grant are directly applicable as input for global carbon modeling studies that use variations in the concentration and carbon isotopic composition of atmospheric carbon dioxide to quantify the magnitude and spatial and temporal patterns of carbon uptake on the global scale.

Maureen H. Conte

2008-04-10T23:59:59.000Z

324

Building Blocks of Tropical Diabatic Heating  

SciTech Connect

Rotated EOF analyses are used to study the composition and variability of large-scale tropical diabatic heating profiles estimated from eight field campaigns. The results show that the profiles are composed of a pair of building blocks. These are the stratiform heating with peak heating near 400hpa and a cooling peak near 700hPa and convective heating with a heating maximum near 700hPa. Variations in the contributions of these building blocks account for the evolution of the large-scale heating profile. Instantaneous top (bottom) heavy large scale heating profiles associated with excess of stratiform (convective) heating evolve towards a stationary mean profile due to exponential decay of the excess stratiform (convective) heating.

Hagos, Samson M.

2010-07-01T23:59:59.000Z

325

Page 1 of 5 Global atmospheric budget of acetaldehyde: 3D model analysis and1  

E-Print Network (OSTI)

., 2004; Karl et al., 2007), warm40 conifer forest (Karl et al., 2005), cool temperate conifer forest of the emission range, but conifer and broadleaf forests cover the entire range of reported51 emissions and so measured using tower-based flux systems39 deployed in ten ecosystems including tropical forest (Karl et al

Mlllet, Dylan B.

326

Sensitivity of global tropical climate to land surface processes: Mean state and interannual variability  

SciTech Connect

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

327

Integrated Water, Atmosphere, Ecosystems, Education and Research Program  

E-Print Network (OSTI)

I-WATER Integrated Water, Atmosphere, Ecosystems, Education and Research Program #12;I-WATER management decisions? II--WATERWATER Integrated Water, Atmosphere,Integrated Water, Atmosphere, Ecosystems resource issues. #12;I-WATER: Vision and Goals ¤ I-WATER will provide a new generation of Ph.D. students

328

Introduction Hall and Tank (2005) present estimates of ecosystem metab-  

E-Print Network (OSTI)

213 Introduction Hall and Tank (2005) present estimates of ecosystem metab- olism for Giltner in the estimation of ecosystem metabolism by open-channel methods (McCutchan et al. 2002; Hall and Tank 2005). To estimate metabolism in Giltner Spring Creek, Hall and Tank (2005) employ a mass-balance equation

Lewis Jr., William M.

329

Climate Change in Mountain Ecosystems Areas of Current Research  

E-Print Network (OSTI)

Climate Change in Mountain Ecosystems Areas of Current Research · Glacier Research · Snow Initiative Glacier Research A Focus on Mountain Ecosystems Climate change is widely acknowledged to be having in the western U.S. and the Northern Rockies in particular are highly sensitive to climate change. In fact

330

Infectious disease agents mediate interaction in food webs and ecosystems  

Science Journals Connector (OSTI)

...disease agents mediate interaction in food webs and ecosystems Sanja Selakovic 1 Peter...Netherlands Infectious agents are part of food webs and ecosystems via the relationship with...interactions, infectious agents influence food webs in terms of structure, functioning and...

2014-01-01T23:59:59.000Z

331

The 4C framework: principles of interaction in digital ecosystems  

Science Journals Connector (OSTI)

Recent years have seen an increased research interest in multi-device interactions and digital ecosystems. This research addresses new opportunities and challenges when users are not simply interacting with one system or device at a time, but orchestrate ... Keywords: digital ecosystems, framework, multi-artifact, multi-user, relationships, structures

Henrik Sørensen, Dimitrios Raptis, Jesper Kjeldskov, Mikael B. Skov

2014-09-01T23:59:59.000Z

332

PERSPECTIVES Biodiversity loss, trophic skew and ecosystem functioning  

E-Print Network (OSTI)

IDEAS AND PERSPECTIVES Biodiversity loss, trophic skew and ecosystem functioning J. Emmett Duffy School of Marine Science & Virginia Institute of Marine Science, The College of William and Mary biodiversity effects on ecosystem functioning have been criticized on the basis that their random

Duffy, J. Emmett

333

Biomass and productivity of trematode parasites in pond ecosystems  

E-Print Network (OSTI)

Biomass and productivity of trematode parasites in pond ecosystems Daniel L. Preston*, Sarah A often measure the biomass and productivity of organisms to understand the importance of populations and dissections of over 1600 aquatic invertebrate and amphib- ian hosts, we calculated the ecosystem-level biomass

Johnson, Pieter

334

Evaluating ecosystem processes in willow short rotation coppice bioenergy plantations  

E-Print Network (OSTI)

Evaluating ecosystem processes in willow short rotation coppice bioenergy plantations R E B E C C body of research linking bioenergy cultivation to changing patterns of biodiversity, there has been remarkably little interest in how bioenergy plantations affect key ecosystem processes underpinning impor

335

Aquatic Microbiology for Ecosystem Scientists: New and Recycled  

E-Print Network (OSTI)

to pelagic ecosystems: the problem of bacterial cell dormancy; the effect of solar radiation on organic some allochthonous organic input, the secondary production of plank- tonic bacteria can be co ABSTRACT In all ecosystems, bacteria are the most numerous organisms and through them flows a large

336

A Serpentinite-Hosted Ecosystem: The Lost City Hydrothermal Field  

E-Print Network (OSTI)

A Serpentinite-Hosted Ecosystem: The Lost City Hydrothermal Field Deborah S. Kelley,1 * Jeffrey A. Baross,1 Roger E. Summons,7 Sean P. Sylva4 The serpentinite-hosted Lost City hydrothermal field is a remarkable submarine ecosystem in which geological, chemical, and biological processes are intimately

Gilli, Adrian

337

Assessment of ecosystem biodiversity by acoustic diversity indices  

Science Journals Connector (OSTI)

Assessment of ecosystem biodiversity by measurement of acoustic diversity was explored [B. L. Krause Explorers J. Winter 156–160 (1993)]. Specific acoustic indices (e.g. based on frequency spectrum) were developed and correlated with standard diversity indices (e.g. standard species abundance indices). Necessary technological infrastructures and analytic processes to measure acoustic dynamics of ecological biodiversity were explored. An automated web?based infrastructure capable of capturing processing and relaying real?time field measurements from multiple ecosystems to desktop and home computers was developed tested and implemented. Key infrastructure components were remote field instrumentation remote computer processing wireless digital relay instrumentation Internet server and automation relational database and website software. A dynamic digital library of ecological acoustic samples correlated ecosystem attributes and acoustic analysis methodologies was established. Library resources including digital sound files captured from ecosystems were made available to researchers and the public over the Internet [N. Metzger and M. Blumenthal Realizing Info. Future NAP 113–119 (1994)]. Indices of acoustic ecosystem diversity were refined through application on existing digital ecosystem sound recordings and digital sounds captured from multiple ecosystems. The performance of these indices was compared to standard biodiversity indices applied to the same ecosystems.

2001-01-01T23:59:59.000Z

338

Carbon Sequestration May Have Negative Impacts on Ecosystem Health  

Science Journals Connector (OSTI)

Carbon Sequestration May Have Negative Impacts on Ecosystem Health ... Yin, R.; Sedjo, R.; Liu, P.The potential and challenges of sequestering carbon and generating other services in China’s forest ecosystems Environ. ... A discussion of whether climate change in China can be mitigated by expanding its forest area by 40 million ha to sequester C (CO2 emissions). ...

Yafeng Wang; Shixiong Cao

2011-02-10T23:59:59.000Z

339

Ecology and Restoration of Invaded Ecosystems FOR 4934 (3 credits)  

E-Print Network (OSTI)

Ecology and Restoration of Invaded Ecosystems FOR 4934 (3 credits) Spring 2014 Course Description This advanced ecosystem management course will begin with an overview of the ecological basis for plant in ecology and applied plant science, graduate students in the Masters of Science, Ecological Restoration

Slatton, Clint

340

Ecology and Restoration of Invaded Ecosystems FOR 6934 (3 credits)  

E-Print Network (OSTI)

Ecology and Restoration of Invaded Ecosystems FOR 6934 (3 credits) Spring 2014 Course Description This advanced ecosystem management course will begin with an overview of the ecological basis for plant in ecology and applied plant science, graduate students in the Masters of Science, Ecological Restoration

Watson, Craig A.

Note: This page contains sample records for the topic "tropical ecosystem model" 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

CSPH 3101: ECOSYSTEMS OF WELLBEING UMORE Park Design Plan  

E-Print Network (OSTI)

CSPH 3101: ECOSYSTEMS OF WELLBEING UMORE Park Design Plan Envision a Dynamic Community of Wellbeing for innovation that can be exported outside of its boundaries. Umore Park: Ecosystems of Infrastructure it every day in the form of roads, buildings, power lines, stoplights, energy plants, water pipes, when

Netoff, Theoden

342

Spreading Dead Zones and Consequences for Marine Ecosystems  

Science Journals Connector (OSTI)

...factor affecting ecosystem energy flows. Within most systems...on the upward flow of energy in the food chain...fisheries and affecting energy flows in the same way...countries is highly likely if wind patterns shift and cause...times, most coastal and offshore ecosystems never became...

Robert J. Diaz; Rutger Rosenberg

2008-08-15T23:59:59.000Z

343

ARM - Field Campaign - Tropical Ocean Global Atmosphere Coupled  

NLE Websites -- All DOE Office Websites (Extended Search)

govCampaignsTropical Ocean Global Atmosphere Coupled Ocean-Atmosphere govCampaignsTropical Ocean Global Atmosphere Coupled Ocean-Atmosphere Response Exp Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign : Tropical Ocean Global Atmosphere Coupled Ocean-Atmosphere Response Exp 1992.07.11 - 1993.02.28 Lead Scientist : Chuck Long Data Availability Final data available. For data sets, see below. Summary IOP completed. Description The Tropical Ocean Global Atmosphere Coupled Ocean-Atmosphere Response Experiment (TOGA-COARE) was conducted to better understand the structure of the coupled system of the warm pool of the western Pacific Ocean. Hundreds of participants from dozens of countries took part in this experiment from November 1, 1992 through February 28, 1993. Campaign Data Sets

344

Patterns of Convection in the Tropical Western Pacific  

NLE Websites -- All DOE Office Websites (Extended Search)

Patterns of Convection in the Tropical Western Pacific Patterns of Convection in the Tropical Western Pacific J. H. Mather Pacific Northwest National Laboratory Richland, Washington Introduction Convection is ubiquitous throughout the maritime continent region. However, the frequency of convec- tion is not uniform. While much of this region does not experience seasons to the same degree as one finds in mid-latitudes, the annual cycle of the sun's passage does have a large impact on convection throughout the maritime continent and the tropical western Pacific. The distribution of islands also affects convection in a variety of ways. Atmospheric Radiation Measurement (ARM) Program has three sites in the Tropical Western Pacific (TWP) region, illustrated in Figure 1. The sites are located on Manus, Nauru, and at Darwin, Australia.

345

Properties of tropical convection observed by ARM millimeter-radars  

NLE Websites -- All DOE Office Websites (Extended Search)

Properties of tropical convection observed by ARM millimeter-radars Properties of tropical convection observed by ARM millimeter-radars Haynes, John Colorado State University Stephens, Graeme Colorado State University Category: Cloud Properties The results of an analysis of tropical cloud systems observed from a variety of vertically pointing radar systems are described. In particular, observations taken during five years of operation of the ARM millimeter wavelength radar system (MMCR) at Manus Island in the Tropical West Pacific region are characterized into cloud classes according to the radar reflectivity structures of these cloud systems, associated rainfall, and surface radiative properties. These observations of cloud properties are composited with respect to various phases of the Madden Julian Oscillation, which is a dominant mode of variability at Manus Island. A method of better

346

Lunty Tropical Fish Aquaculture Low Temperature Geothermal Facility | Open  

Open Energy Info (EERE)

Lunty Tropical Fish Aquaculture Low Temperature Geothermal Facility Lunty Tropical Fish Aquaculture Low Temperature Geothermal Facility Jump to: navigation, search Name Lunty Tropical Fish Aquaculture Low Temperature Geothermal Facility Facility Lunty Tropical Fish Sector Geothermal energy Type Aquaculture Location Buhl, Idaho Coordinates 42.5990714°, -114.7594946° 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":[]}

347

Benefits of Tropical Forest Management Under the New Climate Change  

Open Energy Info (EERE)

Benefits of Tropical Forest Management Under the New Climate Change Benefits of Tropical Forest Management Under the New Climate Change Agreement-A Case Study in Cambodia Jump to: navigation, search Name Benefits of Tropical Forest Management Under the New Climate Change Agreement-A Case Study in Cambodia Agency/Company /Organization United States Agency for International Development, Global Environment Facility, United Nations Development Programme Sector Land Focus Area Forestry Topics Policies/deployment programs, Background analysis Resource Type Lessons learned/best practices Website http://www.forestcarbonportal. Country Cambodia UN Region South-Eastern Asia References REDD Cambodia Case Study[1] Benefits of Tropical Forest Management Under the New Climate Change Agreement-A Case Study in Cambodia Screenshot

348

ARM - Publications: Science Team Meeting Documents: Tropical Warm Pool  

NLE Websites -- All DOE Office Websites (Extended Search)

Tropical Warm Pool International Cloud Experiment Tropical Warm Pool International Cloud Experiment May, Peter Bureau or Meteorology Research Centre Mather, James Pacific Northwest National Laboratory Jakob, Christian BMRC One of the most complete data sets describing tropical convection ever collected will result from the upcoming Tropical Warm Pool International Cloud Experiment (TWPICE) in the area around Darwin in late 2005 and early 2006. The aims of the experiment will be to examine convective cloud systems from their initial stages through to the decay of the cirrus generated and to measure their impact on the environment. The experiment design includes an unprecedented network of ground-based observations (soundings, active and passive remote sensors) combined with a large range of low, mid and high altitude aircraft for in-situ and remote sensing

349

Observed Rainfall Asymmetry in Tropical Cyclones Making Landfall over China  

Science Journals Connector (OSTI)

In this study, the rainfall asymmetries in tropical cyclones (TCs) that made landfall in Hainan (HN), Guangdong (GD), Fujian (FJ), Zhejiang (ZJ) Provinces of Mainland China and Taiwan (TW) from 2001 to 2009 were analyzed based on the TRMM ...

Zifeng Yu; Yuqing Wang; Haiming Xu

350

Eddy formation and propagation in the eastern tropical Pacific  

E-Print Network (OSTI)

Observations of eddies in the eastern tropical Pacific from TOPEX altimetry data show that there are seasonal and interannual variations in eddy activity. Comparisons between time of eddy formation and corresponding wind data show that not all...

Jhingran, Vikas Gopal

2012-06-07T23:59:59.000Z

351

Tropical air mass modification over water (Gulf of Mexico Region)  

E-Print Network (OSTI)

TROPICAL AIR MASS MODIFICATION OVER WA~ (Gulf of Mexico Region) By Ernest Frederick Sorgnit A Thesis Submitted to the Graduate School of the Agricultural and Mechanical College of Texas in partial fu]Afillment of the requirements...

Sorgnit, Ernest Frederick

1952-01-01T23:59:59.000Z

352

On the Seasonal Forecasting of Regional Tropical Cyclone Activity  

Science Journals Connector (OSTI)

Tropical cyclones (TCs) are a hazard to life and property and a prominent element of the global climate system; therefore, understanding and predicting TC location, intensity, and frequency is of both societal and scientific significance. ...

G. A. Vecchi; T. Delworth; R. Gudgel; S. Kapnick; A. Rosati; A. T. Wittenberg; F. Zeng; W. Anderson; V. Balaji; K. Dixon; L. Jia; H.-S. Kim; L. Krishnamurthy; R. Msadek; W. F. Stern; S. D. Underwood; G. Villarini; X. Yang; S. Zhang

2014-11-01T23:59:59.000Z

353

Benefits of Tropical Forest Management Under the New Climate...  

Open Energy Info (EERE)

New Climate Change Agreement-A Case Study in Cambodia Jump to: navigation, search Name Benefits of Tropical Forest Management Under the New Climate Change Agreement-A Case Study in...

354

Southern Hemisphere Additional Ozonesondes (SHADOZ) 19982000 tropical ozone climatology  

E-Print Network (OSTI)

ozone record from Paramaribo, Surinam (6°N, 55°W) (also in SHADOZ) shows a marked contrast to southern tropical ozone because Surinam is often north of the Intertropical Convergence Zone (ITCZ). A more

Thompson, Anne

355

Wind Speed Changes of North Atlantic Tropical Cyclones Preceding Landfall  

Science Journals Connector (OSTI)

Landfalling tropical cyclones have been extensively researched, especially their degradation upon coming ashore and the hazardous weather they create along coastlines and farther inland. Many of the factors that weaken storms over land could begin ...

Peter Yaukey

2011-09-01T23:59:59.000Z

356

North Atlantic Tropical Cyclones and U.S. Flooding  

Science Journals Connector (OSTI)

Riverine flooding associated with North Atlantic tropical cyclones (TCs) is responsible for large societal and economic impacts. The effects of TC flooding are not limited to the coastal regions, but affect large areas away from the coast, and often away ...

Gabriele Villarini; Radoslaw Goska; James A. Smith; Gabriel A. Vecchi

2014-09-01T23:59:59.000Z

357

Origin of tropical American burrowing reptiles by transatlantic rafting  

Science Journals Connector (OSTI)

...tropical American burrowing reptiles by transatlantic rafting Nicolas Vidal 1 2 * Anna Azvolinsky...species. Until now, only four or five transatlantic dispersal events were known in terrestrial...amphisbaenid (Kearney 2003), only transatlantic dispersal (Africa to South America...

2008-01-01T23:59:59.000Z

358

Atmospheric Radiation Measurement Tropical Warm Pool International Cloud Experiment  

NLE Websites -- All DOE Office Websites (Extended Search)

Tropical Warm Pool Tropical Warm Pool International Cloud Experiment General Description The Tropical Warm Pool - International Cloud Experiment (TWP-ICE) was a collaborative effort led by the U.S. Department of Energy's Atmospheric Radiation Measurement (ARM) Program and the Australian Bureau of Meteorology. Beginning January 21 and ending February 14, 2006, the experiment was conducted in the region near the ARM Climate Research Facility in Darwin, Northern Australia. This permanent facility is fully equipped with sophisticated instruments for measuring cloud and other atmospheric properties to provide a long-term record of continuous observational data. Measurements obtained from the other experiment components (explained below) will complement this dataset to provide a detailed description of the tropical atmosphere.

359

AQUATIC CONSERVATION: MARINE AND FRESHWATER ECOSYSTEMS Aquatic Conserv: Mar. Freshw. Ecosyst. 19: 274284 (2009)  

E-Print Network (OSTI)

). Ecohydrologists and stream ecologists frequently focus aquatic ecosystem management and restoration effortsAQUATIC CONSERVATION: MARINE AND FRESHWATER ECOSYSTEMS Aquatic Conserv: Mar. Freshw. Ecosyst. 19 frequently alter aquatic ecosystems. Manipulations caused by large centralized water projects have been well

Merenlender, Adina

360

Final Gulf Coast Ecosystem Restoration Task Force Strategic Plan |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Final Gulf Coast Ecosystem Restoration Task Force Strategic Plan Final Gulf Coast Ecosystem Restoration Task Force Strategic Plan Final Gulf Coast Ecosystem Restoration Task Force Strategic Plan The natural resources of the Gulf's ecosystem are vital to many of the region's industries that directly support economic progress and job creation, including tourism and recreation, seafood production and sales, energy production and navigation and commerce. Among the key priorities of the strategy are: 1) Stopping the Loss of Critical Wetlands, Sand Barriers and Beaches The strategy recommends placing ecosystem restoration on an equal footing with historic uses such as navigation and flood damage reduction by approaching water resource management decisions in a far more comprehensive manner that will bypass harm to wetlands, barrier islands and beaches. The

Note: This page contains sample records for the topic "tropical ecosystem model" 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

Feasibility study for a tropical island sea kayaking ecotourism business  

E-Print Network (OSTI)

of NASTER OF AGRICULTURE August 1993 Najor Subject: Natural Resaurces Development Feasibility Study For 4 Tropical Island Sea Kayak ing Ecotourism Business A Professional Paper by NARY ALEXANDRIA ELDERGILL Appr as to style and content by: Louis A.... Hodges (Chair of Committee) esus H H ojosa (N r) Lauriston E. King mber) Carson E. Watt ( Interim Head of Department) August 1993 ABSTRACT Feasibility Study For A Tropical Island Sea Kayaking Ecotourism Business (May 1992) Mary A. Eldergill, B...

Eldergill, Mary Alexandria

2012-06-07T23:59:59.000Z

362

Ecosystem Japan Co Ltd | Open Energy Information  

Open Energy Info (EERE)

Japan Co Ltd Japan Co Ltd Jump to: navigation, search Name Ecosystem Japan Co Ltd Place Tokyo, Tokyo, Japan Zip 160-0002 Sector Solar Product Japan-based installer of solar panels. Coordinates 35.670479°, 139.740921° 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":35.670479,"lon":139.740921,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

363

Tourism destinations as digital business ecosystems  

E-Print Network (OSTI)

Tourism has been experiencing very relevant changes since when Information and Communication Technologies (ICTs), in all their forms, have started to pervade the industry and the market. In the last decade, a new concept gained the attention of both researchers and practitioners, that of Digital Business Ecosystem (DBE). It can be considered as a technological infrastructure aimed at creating a digital environment to support and enhance networking between enterprises and stakeholders operating within a sector. Aim of this paper is to assess the extent to which the technological connection has affected the structural configuration of the tourism system and, specifically, of tourism destinations. The present study argues that two components can be considered when assessing the relationships among stakeholders within a tourism destination: a real and a virtual one. Further it shows how these two components are structurally strongly coupled and co-evolve forming a single system.

Baggio, Rodolfo

2012-01-01T23:59:59.000Z

364

The influence of tropical heating displacements on the extratropical climate  

SciTech Connect

The hypothesis is advanced that a latitudinal shift in the tropical convective heating pattern can significantly alter temperatures in the extratropics. Results of a simplified GCM show that the shift of a prescribed tropical heating toward the summer pole, on time scales longer than a few weeks, leads to a more intense cross-equatorial [open quotes]winter[close quotes] Hadley circulation, enhanced upper-level tropical easterlies, and a slightly stronger subtropical winter jet, accompanied by warming at the winter middle and high latitudes as a result of increased dynamical heating. The indications are that there is a robust connection between the net dynamic heating in the extratropics and the implied changes in the subtropical wind shear resulting from adjustments in the Hadley circulation associated with convective heating displacements in the tropics. The implications are that (i) the low-frequency temporal variability in the Hadley circulation may play an important role in modulating wave transport in the winter extratropics, (ii) the global climate may be sensitive to those processes that control deep cumulus convection in the tropics, and (iii) systematic temperature biases in GCMs may be reduced by improving the tropical rainfall simulation. 43 refs., 49 figs.

Hou, A.Y. (NASA/Goddard Space Flight Center, Greenbelt, MD (United States))

1993-11-01T23:59:59.000Z

365

Applied Ecosystem Analysis - Background : EDT the Ecosystem Diagnosis and Treatment Method.  

SciTech Connect

This volume consists of eight separate reports. We present them as background to the Ecosystem Diagnosis and Treatment (EDT) methodology. They are a selection from publications, white papers, and presentations prepared over the past two years. Some of the papers are previously published, others are currently being prepared for publication. In the early to mid 1980`s the concern for failure of both natural and hatchery production of Columbia river salmon populations was widespread. The concept of supplementation was proposed as an alternative solution that would integrate artificial propagation with natural production. In response to the growing expectations placed upon the supplementation tool, a project called Regional Assessment of Supplementation Project (RASP) was initiated in 1990. The charge of RASP was to define supplementation and to develop guidelines for when, where and how it would be the appropriate solution to salmon enhancement in the Columbia basin. The RASP developed a definition of supplementation and a set of guidelines for planning salmon enhancement efforts which required consideration of all factors affecting salmon populations, including environmental, genetic, and ecological variables. The results of RASP led to a conclusion that salmon issues needed to be addressed in a manner that was consistent with an ecosystem approach. If the limitations and potentials of supplementation or any other management tool were to be fully understood it would have to be within the context of a broadly integrated approach - thus the Ecosystem Diagnosis and Treatment (EDT) method was born.

Mobrand, Lars E.

1996-05-01T23:59:59.000Z

366

A Functional Test Platform for the Community Land Model  

SciTech Connect

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

367

Problem Description:Problem Description: How can Researchers Monitor Ecosystems via Embedded Sensors?How can Researchers Monitor Ecosystems via Embedded Sensors? Proposed Solution:Proposed Solution: Wireless Sensors to Monitor and Record Biodiversity and  

E-Print Network (OSTI)

Sensors?How can Researchers Monitor Ecosystems via Embedded Sensors? Proposed Solution:Proposed Solution: Wireless Sensors to Monitor and Record Biodiversity and Ecological ChangesWireless Sensors to Monitor.jamesreserve.edu Introduction:Introduction: Embedded Sensors, a Model for Monitoring Wildlife in Their Habitat.Embedded Sensors

Hamilton, Michael P.

368

E-Print Network 3.0 - aquatic ecosystems Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

ecosystem into a terrestrial one when... times dry. Ecosystems are not always self-sustaining. For example, fish and other ... Source: Liskiewicz, Maciej - Institut fr...

369

E-Print Network 3.0 - aquatic ecosystems review Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

ecosystem into a terrestrial one when... times dry. Ecosystems are not always self-sustaining. For example, fish and other ... Source: Liskiewicz, Maciej - Institut fr...

370

E-Print Network 3.0 - aquatic ecosystems final Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

ECOSYSTEMS JOINT MODULE WITH UNIVERSITY OF COSTA RICA Summary: environments Fresh Water Ecosystems Aquatic policies Spanish Spanish Spanish Spanish Spanish Terrestrial... and...

371

E-Print Network 3.0 - animal ecosystem engineers Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

the approach with regards to ecosystem engineering... in an engineered ecosystem (e.g., water purification, biomass production, etc.). In the short term, the objective......

372

E-Print Network 3.0 - asian tropical seagrass Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

of seagrass ecosystems in shallow coastal lagoons: Role of feedbacks with sediment resuspension Summary: Stability and bistability of seagrass ecosystems in shallow coastal...

373

SECTION 206 WRDA 96, AS AMENDED MODEL PROJECT PARTNERSHIP AGREEMENT  

E-Print Network (OSTI)

AUTHORITY AQUATIC ECOSYSTEM RESTORATION PROJECTS DECEMBER 22, 2006 REVISED ­ JANUARY 22, 2009 REVISED Authorities aquatic ecosystem restoration projects implemented pursuant to Section 206 of the Water Resources. Section 206 Aquatic Ecosystem Restoration ­ The attached model should be used only for Continuing

US Army Corps of Engineers

374

ERDC TN-EMRRP-EBA-5 Improving Conceptual Model  

E-Print Network (OSTI)

's goals and stakeholders' expectations. In aquatic ecosystem restoration projects, these often include model is a required step in creating any ecosystem restoration project plan regardless of project size available through the Ecosystem Restoration Gateway (http://cw-environment.usace. army.mil/restoration

US Army Corps of Engineers

375

Patch dynamics in a landscape modified by ecosystem engineers Justin P. Wright, William S. C. Gurney and Clive G. Jones  

E-Print Network (OSTI)

Patch dynamics in a landscape modified by ecosystem engineers Justin P. Wright, William S. C. Gurney and Clive G. Jones Wright, J. P., Gurney, W. S. C. and Jones, C. G. 2004. Patch dynamics, dependent on the dynamics of the patches that engineers create. Here we develop a set of models that links

376

Organisms as cooperative ecosystem engineers in intertidal flats  

Science Journals Connector (OSTI)

Abstract The importance of facilitative interactions and organismal ecosystem engineering for establishing the structure of communities is increasingly being recognised for many different ecosystems. For example, soft-bottom tidal flats host a wide range of ecosystem engineers, probably because the harsh physico-chemical environmental conditions render these species of particular importance for community structure and function. These environments are therefore interesting when focusing on how ecosystem engineers interact and the consequences of these interactions on community dynamics. In this review, we initially detail the influence on benthic systems of two kinds of ecosystem engineers that are particularly common in tidal flats. Firstly, we examine species providing biogenic structures, which are often the only source of habitat complexity in these environments. Secondly, we focus on species whose activities alter sediment stability, which is a crucial feature structuring the dynamics of communities in tidal flats. The impacts of these engineers on both environment and communities were assessed but in addition the interaction between ecosystem engineers was examined. Habitat cascades occur when one engineer favours the development of another, which in turn creates or modifies and improves habitat for other species. Non-hierarchical interactions have often been shown to display non-additive effects, so that the effects of the association cannot be predicted from the effects of individual organisms. Here we propose the term of “cooperative ecosystem engineering” when two species interact in a way which enhances habitat suitability as a result of a combined engineering effect. Finally, we conclude by describing the potential threats for ecosystem engineers in intertidal areas, potential effects on their interactions and their influence on communities and ecosystem function.

Claire Passarelli; Frédéric Olivier; David M. Paterson; Tarik Meziane; Cédric Hubas

2014-01-01T23:59:59.000Z

377

Sustainable Reservoir Operation: Can we Generate Hydropower and Preserve Ecosystem Values?  

SciTech Connect

Hydroelectric power provides a cheap source of electricity with few carbon emissions. Yet, reservoirs are not operated sustainably, which we define as meeting societal needs for water and power while protecting long-term health of the river ecosystem. Reservoirs that generate hydropower are typically operated with the goal of maximizing energy revenue, while meeting other legal water requirements. Reservoir optimization schemes used in practice do not seek flow regimes that maximize aquatic ecosystem health. Here, we review optimization studies that considered environmental goals in one of three approaches. The first approach seeks flow regimes that maximize hydropower generations while satisfying legal requirements, including environmental (or minimum) flows. Solutions from this approach are often used in practice to operate hydropower projects. In the second approach, flow releases from a dam are timed to meet water quality constraints on dissolved oxygen (DO), temperature and nutrients. In the third approach, flow releases are timed to improve the health of fish populations. We conclude by suggesting three steps for bringing multi-objective reservoir operation closer to the goal of ecological sustainability: (1) conduct research to identify which features of flow variation are essential for river health and to quantify these relationships, (2) develop valuation methods to assess the total value of river health and (3) develop optimal control softwares that combine water balance modeling with models that predict ecosystem responses to flow.

Jager, Yetta [ORNL; Smith, Brennan T [ORNL

2008-01-01T23:59:59.000Z

378

MODEL ANALYSES AND GUIDANCE (MAG) APPLICATION MAG User's Manual  

E-Print Network (OSTI)

the National Weather Service's (NWS) Numerical Weather Prediction computer models. The website offers Guidance: Provides a path to view products created from the National Weather Service's (NWS) numerical Weather Service's Tropical Cyclone models. These products are only available when tropical cyclones

379

Simulated climatology of a general circulation model with a hydrological cycle  

E-Print Network (OSTI)

The thermal and dynamical structure of the tropical atmosphere which emerged from the numerical integration of our general circulation model with a simple hydrologic cycle is analyzed in detail. According to the results of our analysis, the lapse rate of zonal mean temperature in the model Tropics is supermoist-adiabatic in the lower troposphere, and is sub-moist-adiabatic above the 400-mb. level in qualitative agreement with thc observed features in the actual Tropics. The flow field in the model Tropics also displays interesting features. For example, a zone of strong convergence and a belt of heavy rain develops around the equator. Synoptic-scale disturbances such as weak tropical cyclones and shear lines with strong convergence develop and are reminiscent of disturbances in the actual tropical atmosphere. The humid towers, which result from moist convective adjustment and condensation, develop in the central core of the regions of strong upward motion, sometimes reaching the level of the tropical tropopause and thus heating the upper tropical troposphere. This heating compensates for thc cooling due to radiation and the meridional circulation. According to the analysis of the energy budget of the model Tropics, the release of eddy available potential energy, which is mainly generated by the heat of condensation, constitutes the major source of eddy kinetic energy of disturbances prevailing in the model Tropics.

Syukuro Manabe; Joseph Smagorinsky

1965-01-01T23:59:59.000Z

380

Center for Research on Enhancing Carbon Sequestration in Terrestrial Ecosystems  

E-Print Network (OSTI)

#12;Center for Research on Enhancing Carbon Sequestration in Terrestrial Ecosystems Personnel. Blaine Metting #12;vii Abstract The Center for Research on Enhancing Carbon Sequestration in Terrestrial needed to evaluate the feasibility of environmentally sound strategies for enhancing carbon sequestration

Note: This page contains sample records for the topic "tropical ecosystem model" 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

Warming alters community size structure and ecosystem functioning  

Science Journals Connector (OSTI)

...37-49, 08003 Barcelona, Spain Global warming can affect all levels of biological...structure|ecosystem functioning|global warming|body mass|size spectrum...The ecological implications of global warming have been documented across many...

2012-01-01T23:59:59.000Z

382

Ecosystem Approaches to the Management and Allocation of Critical Resources  

Science Journals Connector (OSTI)

The chapter identifies concepts, approaches, and frontiers that can increase the understanding of the linkages between ecology, society, and the economy for improved ecosystem management. The first part focuse...

Carl Folke

1998-01-01T23:59:59.000Z

383

GHG Emissions from Boreal Reservoirs and Natural Aquatic Ecosystems  

Science Journals Connector (OSTI)

Carbon dioxide (CO2), methane (CH4) and nitrous oxide (N2O) gross fluxes were measured at the air-water interface of 205 aquatic ecosystems in the Canadian boreal region from 1993 to 2003. Fluxes were obtained wi...

Alain Tremblay; Jean Therrien; Bill Hamlin…

2005-01-01T23:59:59.000Z

384

Timothy Gordon Whitby Research Intern, Ecosystem & Landscape Ecology Lab  

E-Print Network (OSTI)

of long-term plots in lodgepole pine stands following 1988 Yellowstone wildfires to understand long-supported remote sensing of ecosystem structure and function project in Colorado and Utah. 2004- 2009 Apprentice

Turner, Monica G.

385

A Holistic Approach to Marine Eco-Systems Biology  

E-Print Network (OSTI)

With biology becoming quantitative, systems-level studies can now be performed at spatial scales ranging from molecules to ecosystems. Biological data generated consistently across scales can be integrated with physico-chemical ...

Follows, Michael J.

386

Final Strategic Plan Released by Gulf Coast Ecosystem Restoration Taskforce  

Energy.gov (U.S. Department of Energy (DOE))

Today (December 5) the Gulf Coast Ecosystem Restoration Task Force released its final strategy for long-term restoration in the Gulf, a path forward based on input from states, tribes, federal...

387

Stream hydrology limits recovery of riparian ecosystems after wolf reintroduction  

Science Journals Connector (OSTI)

...Natural Resource and Ecology Laboratory, Colorado State University, , Fort Collins, CO...Ecosystem Science and Sustainability, Colorado State University, , Fort Collins, CO...downcutting channels and disconnecting flood plains from their adjacent streams [18...

2013-01-01T23:59:59.000Z

388

Hygienic rating of hydrocarbons in bottom deposits of water ecosystems  

Science Journals Connector (OSTI)

The authors of this article draw the reader’s attention to the topical problem of the contamination of bottom deposits of water ecosystems by hydrocarbons, such as oil and gas condensate,...

Rauf Valievich Galiulin…

2014-05-01T23:59:59.000Z

389

Ecosystem health through ecological restoration: barriers and opportunities  

Science Journals Connector (OSTI)

It is quite possible that no ecosystem on the planet is totally free of anthropogenic effects. Changes in the ozone layer, airborne transport of contaminants, and the persistence of pesticides and other chemic...

John Cairns Jr

1994-01-01T23:59:59.000Z

390

California Water Policy Seminar Series Reconciling Ecosystem And Economy  

E-Print Network (OSTI)

; Hap Dunning and Richard Frank, UC Davis School of Law Feb. 24 Farms, floods, fowl and fish on the Yolo, Yolo County; others TBA Mar. 10 Science and ecosystem reconciliation for the Delta. Peter Goodwin

Ferrara, Katherine W.

391

STUART E.G. FINDLAY Cary Institute of Ecosystem Studies  

E-Print Network (OSTI)

and K.A. Kuehn. 2002. Microbial growth and nitrogen retention in litter of Phragmites australis.M. Groffman and S. Dye. 2003. Trade-offs among ecosystem functions during restoration: Phragmites removal from

392

Degraded states, novel ecosystems, or reconfigured landscapes  

E-Print Network (OSTI)

. Specify state-and-transition model for ecological sites T1, T2--local management drivers; R1--restoration Changing management Stationarity or constant change? Disturbance/feedbacks Changes in survival and transition models vs. alternative regime models 2. How do we gather evidence for the models? broader spatial

393

2010 U.S. Smart Grid Vendor Ecosystem  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

2010 U.S. Smart Grid Vendor Ecosystem 2010 U.S. Smart Grid Vendor Ecosystem Report on the companies and market dynamics shaping the current U.S. smart grid landscape The Cleantech Group www.cleantech.com Principal Authors Greg Neichin David Cheng Contributing Authors Sheeraz Haji Josh Gould Debjit Mukerji David Hague 2 Table of Contents Page I. Introduction .............................................................................. 3 In-Depth Market Analysis II. Advanced Metering .......................................................... 19 III. Demand Response ............................................................ 39 IV. Distribution Grid Management ...................................... 57

394

Estimating Vertical Motion Profile Shape within Tropical Weather States over the Oceans  

Science Journals Connector (OSTI)

The vertical structure of tropical deep convection strongly influences interactions with larger-scale circulations and climate. This paper focuses on investigating this vertical structure and its relationship with mesoscale tropical weather ...

Zachary J. Handlos; Larissa E. Back

2014-10-01T23:59:59.000Z

395

Climate regulation of humid tropical hydrology BHS 10th National Hydrology Symposium, Exeter, 2008  

E-Print Network (OSTI)

might influence tropical water resources. Introduction The humid tropics can be defined as the global, Bangladesh, and most of South-east Asia (Fosberg et al., 1961). Its climate contains distinctive dynamics

Chappell, Nick A

396

The role of gap phase processes in the biomass dynamics of tropical forests  

Science Journals Connector (OSTI)

...gap phase processes in the biomass dynamics of tropical forests...understood. Above-ground woody biomass in some tropical forest...greenhouse gas emissions from biomass burning, decomposition and soils forest in conversion, shifting cultivation and...

2007-01-01T23:59:59.000Z

397

Improved Tropical Cyclone Flight-Level Wind Estimates Using Routine Infrared Satellite Reconnaissance  

Science Journals Connector (OSTI)

A new and improved method to estimate the tropical cyclone flight-level winds using globally and routinely available tropical cyclone (TC) information and infrared (IR) satellite imagery is presented. The developmental data set is comprised of ...

John A. Knaff; Scott P. Longmore; Robert T. DeMaria; Debra A. Molenar

398

The rainfall over tropical South America generated by multiple scale processes.  

E-Print Network (OSTI)

??The rainfall regime over Central America and tropical South America is the most important hydro-meteorological event in the tropics after the Asian-Australian monsoon system. Therefore,… (more)

Carrillo, Carlos Mauricio

2010-01-01T23:59:59.000Z

399

Vertical flux, ecology and dissolution of radiolaria in tropical oceans : implications for the silica cycle  

E-Print Network (OSTI)

Radiolarians which settle through the oceanic water column were recovered from three stations (western Tropical Atlantic-Station E, central Tropical Pacific-P1 and Panama Basin-PB) using PARFLUX sediment traps in moored ...

Takahashi, Kozo

1982-01-01T23:59:59.000Z

400

A census of precipitation features in the tropics using TRMM: radar, ice scattering, and lightning observations  

E-Print Network (OSTI)

The observation of precipitation in the tropics has been greatly enhanced trough the launch of the Tropical Rainfall Measuring Mission (TRMM) satellite n 1997. TRMM'S ability to continuously and simultaneously observe precipitation processes...

Nesbitt, Stephen William

1999-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "tropical ecosystem model" 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

Tropical climate variability from the last glacial maximum to the present  

E-Print Network (OSTI)

This thesis evaluates the nature and magnitude of tropical climate variability from the Last Glacial Maximum to the present. The temporal variability of two specific tropical climate phenomena is examined. The first is the ...

Dahl, Kristina Ariel

2005-01-01T23:59:59.000Z

402

Tropical Pacific nutrient dynamics in the modern and pleistocene ocean : insights from the nitrogen isotope system  

E-Print Network (OSTI)

eastern equatorial Pacific Ocean during the past 3 M.Y. ,in the western tropical Pacific Ocean in the Holocene epoch,eastern tropical North Pacific Ocean, Mar. Chem. , 3, 271–

Rafter, Patrick Anthony

2009-01-01T23:59:59.000Z

403

Barotropic Rossby Waves Radiating from Tropical Instability Waves in the Pacific Ocean  

Science Journals Connector (OSTI)

Tropical instability waves are triggered by instabilities of the equatorial current systems, and their sea level signal, with peak amplitude near 5°N, is one of the most prominent features of the dynamic topography of the tropics. Cross-spectral ...

J. Thomas Farrar

2011-06-01T23:59:59.000Z

404

Probability Distributions and Threshold Selection for Monte Carlo–Type Tropical Cyclone Wind Speed Forecasts  

Science Journals Connector (OSTI)

Probabilistic wind speed forecasts for tropical cyclones from Monte Carlo–type simulations are assessed within a theoretical framework for a simple unbiased Gaussian system that is based on feature size and location error that mimic tropical ...

Michael E. Splitt; Steven M. Lazarus; Sarah Collins; Denis N. Botambekov; William P. Roeder

2014-10-01T23:59:59.000Z

405

Survival of Bacillus licheniformis in Seawater Model Ecosystems  

Science Journals Connector (OSTI)

...sediment surface and fixed to a pontoon bridge (Fig. 1). The water in the enclosures was kept in circulation by wind-driven mills. Two enclosures were inoculated with B. licheniformis DSM 13, and two enclosures served as untreated controls...

Ole Nybroe; Kirsten Christoffersen; Bo Riemann

1992-01-01T23:59:59.000Z

406

Incorporating Phaeocystis into a Southern Ocean ecosystem model  

E-Print Network (OSTI)

to Australia and South America, where iron concentrationsregion and south of South America both increased when only aSea, south of the South America and the Crozet? Kerguelen

Wang, Shanlin; Moore, J. Keith

2011-01-01T23:59:59.000Z

407

Incorporating Phaeocystis into a Southern Ocean ecosystem model  

E-Print Network (OSTI)

The data sets and flux climatologies, NCAR Tech. Note NCAR/and a profile?based climatology, J. Geophys. Res. , 109,A global ocean carbon climatology: Results from Global Data

Wang, Shanlin; Moore, J. Keith

2011-01-01T23:59:59.000Z

408

GEOGRAPHICAL DISRIBUTION OF WOODY BIOMASS CARBON IN TROPICAL AFRICA: AN  

NLE Websites -- All DOE Office Websites (Extended Search)

Geographical Distribution of Woody Biomass Carbon in Tropical Africa: An Geographical Distribution of Woody Biomass Carbon in Tropical Africa: An Updated Database for 2000, NDP-055b TABLES Please cite as: Gibbs, H.K. and S. Brown. 2007. Geographical Distribution of Woody Biomass Carbon in Tropical Africa: An Updated Database for 2000, NDP-055b. Available at [http://cdiac.ornl.gov/epubs/ndp/ndp055/ndp055b.html] from the Carbon Dioxide Information Analysis Center, Oak Ridge National Laboratory, Oak Ridge, Tennessee, U.S.A. Tables 1-4 Files in this numeric data package Variable formats of af_biomass.vat Variable formats of af_carbon.vat Variable formats of glc_subset_af.vat Variable formats of land_geo.vat Variable formats of pb_geo.vat Table 1. Files in this numeric data package File No. File name File size (bytes) File description

409

An Analytical Model for Tropical Relative Humidity DAVID M. ROMPS  

E-Print Network (OSTI)

the distribution of water vapor will change with warming. Water vapor is the atmosphere's most powerful greenhouse gas, and changes in its distribution can have significant implications for radiative forcing. A first

Romps, David M.

410

Evaluation of Cumulative Ecosystem Response to Restoration Projects in the Lower Columbia River and Estuary, 2010  

SciTech Connect

This is the seventh and final annual report of a project (2004–2010) addressing evaluation of the cumulative effects of habitat restoration actions in the 235-km-long lower Columbia River and estuary. The project, called the Cumulative Effects (CE) study, was conducted for the U.S. Army Corps of Engineers Portland District by a collaboration of research agencies led by the Pacific Northwest National Laboratory. We achieved the primary goal of the CE study to develop a methodology to evaluate the cumulative effects of habitat actions in the Columbia Estuary Ecosystem Restoration Program. We delivered 1) standard monitoring protocols and methods to prioritize monitoring activities; 2) the theoretical and empirical basis for a CE methodology using levels-of-evidence; 3) evaluations of cumulative effects using ecological relationships, geo-referenced data, hydrodynamic modeling, and meta-analyses; and 4) an adaptive management process to coordinate and coalesce restoration efforts in the LCRE. A solid foundation has been laid for future comprehensive evaluations of progress made by the Columbia Estuary Ecosystem Restoration Program to understand, conserve, and restore ecosystems in the lower Columbia River and estuary.

Johnson, Gary E.; Diefenderfer, Heida L.; Thom, Ronald M.; Roegner, G. Curtis; Ebberts, Blaine D.; Skalski, John R.; Borde, Amy B.; Dawley, Earl; Coleman, Andre M.; Woodruff, Dana L.; Breithaupt, Stephen A.; Cameron, April; Corbett, C.; Donley, Erin E.; Jay, D. A.; Ke, Yinghai; Leffler, K.; McNeil, C.; Studebaker, Cindy; Tagestad, Jerry D.

2012-05-01T23:59:59.000Z

411

The divergent wind component in data sparse tropical wind fields  

E-Print Network (OSTI)

THE DIVERGENT WIND COMPONENT IN DATA SPARSE TROPICAL WIND FIELDS A Thesis by BRUCE ALAN SNYDER Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE December... 1985 Major Subject: Meteorology THE DIVERGENT WIND COMPONENT IN DATA SPARSE TROPICAL WIND FIELDS A Thesis by BRUCE ALAN SNYDER Approved as to style and content by: James P. McGuirk (Co-Chairman) Aylmer IL Thompson (Co-Chairman) W. Homer...

Snyder, Bruce Alan

1985-01-01T23:59:59.000Z

412

Global warming shifts Pacific tropical cyclone location MinHo Kwon,1,3  

E-Print Network (OSTI)

Global warming shifts Pacific tropical cyclone location Tim Li,1 MinHo Kwon,1,3 Ming Zhao,3 Jong) is used to investigate the change of tropical cyclone frequency in the North Pacific under global warming, and W. Yu (2010), Global warming shifts Pacific tropical cyclone location, Geophys. Res. Lett., 37, L

Li, Tim

413

Tree planting by small producers in the tropics: A comparative study of Brazil and Panama  

E-Print Network (OSTI)

Tree planting by small producers in the tropics: A comparative study of Brazil and Panama Cynthia S in revised form 25 March 2002 Key words: Brazil, Land tenure, Panama, Reforestation, Small farmers, Tropical in the tropical frontier regions of Panama and Brazil in order to gauge the magnitude of reforestation activities

Simmons, Cynthia S.

414

Eddy mean flow decomposition and eddy diffusivity estimates in the tropical Pacific Ocean  

E-Print Network (OSTI)

Eddy mean flow decomposition and eddy diffusivity estimates in the tropical Pacific Ocean: 2] Eddy diffusivity of the surface velocity field in the tropical Pacific Ocean was estimated using diffusivity estimates in the tropical Pacific Ocean: 2. Results, J. Geophys. Res., 107(C10), 3154, doi:10

415

Validating Atmospheric Reanalysis Data Using Tropical Cyclones as Thermometers James P. Kossin  

E-Print Network (OSTI)

1 Validating Atmospheric Reanalysis Data Using Tropical Cyclones as Thermometers James P. Kossin tropical cyclones as thermometers. Bull. Amer. Meteor. Soc. doi:10.1175/BAMS-D-14-00180, in press. Capsule Tropical cyclones are used as traveling thermometers to globally sample upper-tropospheric temperatures

Kossin, James P.

416

Structure of the tropical lower stratosphere as revealed by three reanalysis data sets  

SciTech Connect

While the skill of climate simulation models has advanced over the last decade, mainly through improvements in modeling, further progress will depend on the availability and the quality of comprehensive validation data sets covering long time periods. A new source of such validation data is atmospheric {open_quotes}reanalysis{close_quotes} where a fixed, state-of-the-art global atmospheric model/data assimilation system is run through archived and recovered observations to produce a consistent set of atmospheric analyses. Although reanalysis will be free of non-physical variability caused by changes in the models and/or the assimilation procedure, it is necessary to assess its quality. A region for stringent testing of the quality of reanalysis is the tropical lower stratosphere. This portion of the atmosphere is sparse in observations but displays the prominent quasi-biennial oscillation (QBO) and an annual cycle, neither of which is fully understood, but which are likely coupled dynamically. We first consider the performance of three reanalyses, from NCEP/NCAR, NASA and ECMWF, against rawinsonde data in depicting the QBO and then examine the structure of the tropical lower stratosphere in NCEP and ECMWF data sets in detail. While the annual cycle and the QBO in wind and temperature are quite successfully represented, the mean meridional circulations in NCEP and ECMWF data sets contain unusual features which may be due to the assimilation process rather than being physically based. Further, the models capture the long-term temperature fluctuations associated with volcanic eruptions, even though the physical mechanisms are not included, thus implying that the model does not mask prominent stratospheric signals in the observational data. We conclude that reanalysis offers a unique opportunity to better understand the dynamics of QBO and can be applied to climate model validation.

Pawson, S. [Free Univ. of Berlin (Germany). Institute for Meteorology; Fiorino, M. [Lawrence Livermore National Lab., CA (United States)

1996-05-01T23:59:59.000Z

417

World Ecosystem and Environmental Science and Policy 30  

E-Print Network (OSTI)

engine" · that drives air and ocean currents · Moving water transports heat · Moving air transports heat Engine:" Differential heating of the tropics causes warm air and water to move poleward and cold air out of a wet person. But when water vapor condenses, the latent heat becomes heat again; think steam

Richerson, Peter J.

418

Fuzzy optimal control of reservoir-assisted stormwater treatment areas for aquatic ecosystem restoration  

Science Journals Connector (OSTI)

Attachment of stormwater treatment areas (STAs) or constructed wetlands to stormwater retention reservoirs can achieve substantial reductions in pollutant loadings if properly operated and maintained. Besides water quality improvement, optimally operated reservoir-assisted \\{STAs\\} provide support for ecosystem remediation, flood control, and supplemental water supply. An adaptive, multiobjective real-time control model is developed for reservoir-assisted STA systems that incorporates fuzzy rule-based operating rules optimized using a genetic algorithm interacting with a simulation model of the system. The model is applied to the North Fork reservoir-assisted STA located in the watershed of the St. Lucie Estuary, Florida. Optimal daily feedback operational policies are developed for managing freshwater discharges to the Estuary for coastal ecosystem restoration, maximizing the natural treatment efficiency and of the STA, and providing supplemental water supply for irrigation. Testing and validation results from application of the fuzzy optimal control model confirm achievement of multiple targets and criteria for the North Fork project, while demonstrating potential for adaptive management of reservoir-assisted STA systems throughout the coastal regions of south Florida.

John W. Labadie; Yongshan Wan

2010-01-01T23:59:59.000Z

419

High-Frequency Skywave Radar Track of Tropical Storm Debra  

Science Journals Connector (OSTI)

Tropical Storm Debra was tracked over a 31 h period in the Gulf of Mexico using the Wide Aperture Research Facility (WARF) high-frequency (HF) skywave radar in California. In contrast to the first WARF skywave radar tracking experiment in which ...

Joseph W. Maresca Jr.; Christopher T. Carlson

1981-04-01T23:59:59.000Z

420

REGIONAL VARIABILITY IN TROPICAL CONVECTION: OBSERVATIONS FROM TRMM  

E-Print Network (OSTI)

and longitude. The reflectivity histograms and ice water contents were then combined with LIS lightning flash structure histograms, and lightning flash density data reveal that 1) relative to tropical continental characteristics of precipitation vertical structure and associated lightning flash density. In general

Rutledge, Steven

Note: This page contains sample records for the topic "tropical ecosystem model" 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

A QuikSCAT climatology of tropical cyclone size  

E-Print Network (OSTI)

QuikSCAT data of near-surface wind vectors for the years 1999–2008 are used to create a climatology of tropical cyclone (TC) size, defined as the radius of vanishing winds. The azimuthally-averaged radius of 12 ms?1 [ms ...

Chavas, Daniel Robert

422

Marketing of Tropical Hardwood Wood Products from Ghana  

E-Print Network (OSTI)

Marketing of Tropical Hardwood Wood Products from Ghana: An Exploratory Study Kofi Poku Richard Vlosky Forest Products Marketing Program Louisiana Forest Products Laboratory Louisiana State University Agricultural Center #12;Overview · Background - the forest of Ghana · Current forest industry and market

423

Association for Tropical Biology and Conservation Brownsberg Declaration 2008  

E-Print Network (OSTI)

Paramaribo, Suriname VERKLARING INZAKE HET TOEKENNEN VAN PERMANENT BESCHERMDE STATUS AAN DE BROWNSBERG EN DE. IN OVERWEGING NEMENDE DAT de bauxiethoudende Bergen in noordoost- Suriname ­ Brownsberg, Nassau en Lely ­ deelAssociation for Tropical Biology and Conservation Brownsberg Declaration 2008 13 June 2008

Norconk, Marilyn A.

424

Tropical Timber Market Report Volume 15 Number 3, 1 15  

E-Print Network (OSTI)

Freight Index 20 Tropical Timber Price Trends 20 Top Story Clarification on Gabon log ban At a recent meeting with Gabon's Minister for Forests, executives of the country's timber industries were advised Clarification on Gabon log ban 2 Malaysia progresses with VPA 3 Plywood push in India 5 Call for lower import

425

TROPIC: Transactional Resource Orchestration Platform In the Cloud  

E-Print Network (OSTI)

TROPIC: Transactional Resource Orchestration Platform In the Cloud Changbin Liu, Yun Mao*, Xu Chen ­ InfrastructureasaService (IaaS) Cloud · Provide cloud infrastructure services: virtual machines (VMs), virtual block devices, VPNs · Widely adopted, e.g. Amazon Elastic Compute Cloud (EC2) ­ Cloud resource

Plotkin, Joshua B.

426

Detection of iodine monoxide in the tropical free troposphere  

E-Print Network (OSTI)

19, 2012) Atmospheric iodine monoxide (IO) is a radical that catalytically destroys heat trapping in the remote tropical marine boundary layer (MBL) (2­4). IO further affects the oxidative capacity iodine species over the remote ocean remain poorly understood (11, 14) but are currently thought

427

Arbuscular mycorrhizal mycelial respiration in a moist tropical forest  

E-Print Network (OSTI)

Universiteit, De Boelelaan 1085, 1081 HV Amsterdam, The Netherlands; 4 Ecological Farming Systems, Research Tropical Research Institute, 0843- 03092 Balboa, Ancon, Panama; 3 Institute of Ecological Science, Vrije Station ART, Swiss Federal Research Institute Agroscope, Zurich, Switzerland; 5 Plant­Microbe Interactions

Bermingham, Eldredge

428

Future economic damage from tropical cyclones: sensitivities to societal and  

E-Print Network (OSTI)

in support of advocacy to reduce greenhouse gas emissions. For instance, in his movie An inconvenient truth related to tropical cyclones than efforts to modulate the behaviour of storms through greenhouse gas emissions reduction policies, typically called climate mitigation and achieved through energy policies

Colorado at Boulder, University of

429

Radiative Heating of the ISCCP Upper Level Cloud Regimes and its Impact on the Large-scale Tropical Circulation  

SciTech Connect

Radiative heating profiles of the International Satellite Cloud Climatology Project (ISCCP) cloud regimes (or weather states) were estimated by matching ISCCP observations with radiative properties derived from cloud radar and lidar measurements from the Department of Energy (DOE) Atmospheric Radiation Measurement (ARM) sites at Manus, Papua New Guinea, and Darwin, Australia. Focus was placed on the ISCCP cloud regimes containing the majority of upper level clouds in the tropics, i.e., mesoscale convective systems (MCSs), deep cumulonimbus with cirrus, mixed shallow and deep convection, and thin cirrus. At upper levels, these regimes have average maximum cloud occurrences ranging from 30% to 55% near 12 km with variations depending on the location and cloud regime. The resulting radiative heating profiles have maxima of approximately 1 K/day near 12 km, with equal heating contributions from the longwave and shortwave components. Upper level minima occur near 15 km, with the MCS regime showing the strongest cooling of 0.2 K/day and the thin cirrus showing no cooling. The gradient of upper level heating ranges from 0.2 to 0.4 K/(day?km), with the most convectively active regimes (i.e., MCSs and deep cumulonimbus with cirrus) having the largest gradient. When the above heating profiles were applied to the 25-year ISCCP data set, the tropics-wide average profile has a radiative heating maximum of 0.45Kday-1 near 250 hPa. Column-integrated radiative heating of upper level cloud accounts for about 20% of the latent heating estimated by the Tropical Rainfall Measuring Mission (TRMM) Precipitation Radar (PR). The ISCCP radiative heating of tropical upper level cloud only slightly modifies the response of an idealized primitive equation model forced with the tropics-wide TRMM PR latent heating, which suggests that the impact of upper level cloud is more important to large-scale tropical circulation variations because of convective feedbacks rather than direct forcing by the cloud radiative heating profiles. However, the height of the radiative heating maxima and gradient of the heating profiles are important to determine the sign and patterns of the horizontal circulation anomaly driven by radiative heating at upper levels.

Li, Wei; Schumacher, Courtney; McFarlane, Sally A.

2013-01-31T23:59:59.000Z

430

Offshore Texas and Louisiana marine ecosystems data synthesis. Volume 2: Synthesis report. Final report  

SciTech Connect

This study provided a synthesis of available environmental information for the continental shelf from the shallow sublittoral to a depth of 500 m for the area between Corpus Christi Bay, Texas and the Mississippi River Delta. The Synthesis Report consists of separate chapters devoted to marine geology, physical oceanography and meteorology, marine chemistry, marine biology, socioeconomics, and conceptual modeling of the area's major ecosystems with emphasis on the environmental effects of oil and gas operations. There is a summary of data gaps and information needs and suggestions for future field studies.

Phillips, N.W.; James, B.M.

1988-11-01T23:59:59.000Z

431

Advanced nuclear reactors and tritium impacts. Modeling the aquatic pathway  

Science Journals Connector (OSTI)

The effective contribution of nuclear energy will depend on various factors related to economics, safety, public acceptance and sustainability. To assure, however, the nuclear energy development, reactor accident impacts, as Fukushima, must be evaluated in a predictive way. Environmental assessment models are used for evaluating the radiological impact of potential releases of radionuclides from nuclear reactors to the environment. It is important to evaluate, to the extent possible, the reliability of the predictions of such models, by comparing with measured values in the environment or by comparing with the predictions of other models. Tritium has a complex environmental behavior once released into the environment. It is essential to establish reference scenarios to allow the simulation of tritium aquatic pathway subsequent to accidental releases. For this purpose, two scenarios for seawater circulation were analyzed by hydrodynamic modeling. An inverse modeling procedure was successfully applied to estimate tide elevations on the borders, which are based on applying the harmonic constants and using the same overestimation percentage produced by model results to correct the border values. Simulations of validated model for postulated accidental releases of tritium inventory from heavy water reactors, whose doses could be relevant, were presented here. It was observed differences between the two scenarios for the transport modeling that were caused by the removal of large volume of polluted waters from the accident site and its dilution in the discharge area, which has minor tritium concentrations. Moreover, the processes involved in the dynamic transfer of tritium in the environment were analyzed in dependence on the environmental conditions of tropical coastal ecosystem.

Francisco Fernando Lamego Simões Filho; Abner Duarte Soares; André da Silva Aguiar; Celso Marcelo Franklin Lapa; Antonio Carlos Ferreira Guimarães

2013-01-01T23:59:59.000Z

432

Impacts of Climate Change on Photosynthetic Microbes in Arid Ecosystems |  

Office of Science (SC) Website

Impacts of Climate Change on Photosynthetic Microbes in Arid Ecosystems Impacts of Climate Change on Photosynthetic Microbes in Arid Ecosystems Biological and Environmental Research (BER) BER Home About Research Facilities Science Highlights Searchable Archive of BER Highlights External link Benefits of BER Funding Opportunities Biological & Environmental Research Advisory Committee (BERAC) News & Resources Contact Information Biological and Environmental Research U.S. Department of Energy SC-23/Germantown Building 1000 Independence Ave., SW Washington, DC 20585 P: (301) 903-3251 F: (301) 903-5051 E: sc.ber@science.doe.gov More Information » October 2012 Impacts of Climate Change on Photosynthetic Microbes in Arid Ecosystems Researchers find that ten years of controlled CO2 elevation on desert microbes had deleterious effects.

433

Innovation Ecosystems Spur Rapid Growth for Startups, Entrepreneurs |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Innovation Ecosystems Spur Rapid Growth for Startups, Entrepreneurs Innovation Ecosystems Spur Rapid Growth for Startups, Entrepreneurs Innovation Ecosystems Spur Rapid Growth for Startups, Entrepreneurs September 14, 2011 - 4:22pm Addthis Rich Earley, CEO of Clean Urban Energy presents at Clean Energy Trust's Clean Energy Challenge in March 2011 | Courtesy of Clean Energy Trust Rich Earley, CEO of Clean Urban Energy presents at Clean Energy Trust's Clean Energy Challenge in March 2011 | Courtesy of Clean Energy Trust Sarah Jane Maxted Special Assistant, Office of Energy Efficiency & Renewable Energy What does this project do? Smart grid start-up company Clean Urban Energy secured $75,000 for its energy storage and smart grid performance optimization technology. Their system harnesses a building's inherent thermal mass to drive

434

Long-term persistence of pioneer species in tropical forest soil seed banks  

SciTech Connect

In tropical forests, pioneer species regenerate from seeds dispersed directly into canopy gaps, and from seeds that persisted in soil seed banks before gap formation. However, life-history models suggest that selection for long-term persistence of seeds in soil should be weak, as persistence incurs a fitness cost resulting from prolonged generation time. We use a carbon dating technique to provide the first direct measurements of seed persistence in undisturbed tropical forest seed banks. We show that seeds germinate successfully from surface soil microsites up to 38 years after dispersal. Decades-long persistence may be common in pioneers with relatively large mass, and appears to be unrelated to specific regeneration requirements. In Croton billbergianus, a sub-canopy tree that recruits in abundant small gaps, long-term persistence is associated with short-distance ballistic seed dispersal. In Trema micrantha, a canopy tree with widespread dispersal, persistence is associated with a requirement for large gaps that form infrequently in old-growth forest.

Dalling, J W; Brown, T A

2008-10-05T23:59:59.000Z

435

Ecosystems: Issues and problems. (Latest citations from the ABI/Inform database). Published Search  

SciTech Connect

The bibliography contains citations concerning issues and problems relating to ecosystems in different parts of the world. Preservation of resources, environmental protection, industrial impacts on ecosystems, ecological economics, biodiversity of specific ecosystems, and effects of deforestation and erosion are examined. Citations review impacts of human inhabitants, eco-tourism, and alien species on an ecosystem. The relationship to an ecosystem of pests and microbial infections is covered, and long-range planning for ecosystems is cited. (Contains 50-250 citations and includes a subject term index and title list.) (Copyright NERAC, Inc. 1995)

NONE

1996-02-01T23:59:59.000Z

436

Soil carbon dynamics under young tropical secondary forests on former pastures—A case study from Panama  

Science Journals Connector (OSTI)

Secondary forests are gaining increased importance in tropical landscapes and have recently been reported to act as potential belowground carbon sinks. While economic interest in the management of secondary forests to mitigate carbon emissions is rising, the dynamics of soil carbon stocks under these ecosystems remain poorly understood. Recent studies report conflicting results concerning soil carbon trends as well as multiple confounding factors (e.g. soil type, topography and land-use history) affecting these trends. In this study, organic carbon stocks were measured in the mineral soil up to 20 cm depth of at 24 active pastures, 5–8-year-old, and 12–15-year-old secondary forest sites on former pastures. Additionally, we estimated carbon stocks under a 100-year-old secondary forest and compared them to those of nearby mature forests. Abiotic conditions in the study area were homogenous, enabling us to isolate the effect of land-use change on soil organic carbon stocks. Contrary to our expectations, soil carbon stocks in the top 10 cm did not change with young secondary forest development. Pasture soils stored 24.8 ± 2.9 Mg ha?1 carbon (mean ± standard error) in the top 10 cm, and no accumulation of soil carbon was apparent during the first 15 years of secondary succession. Soil carbon stocks under 100-year-old secondary forests, averaging 43.0 ± 7.9 Mg ha?1 (mean ± standard error), were clearly higher than those recorded at younger sites and approached levels of soil carbon stocks under mature forests. These data indicate that soil carbon stocks in this region of Panama are not affected by the land-use transition from pasture to young secondary regrowth. However, an increase of soil carbon storage might be possible over a longer period of time. Our results support trends observed in other tropical areas and highlight the importance of environmental conditions such as soil properties rather than land-use transitions on soil carbon dynamics. While our understanding of organic carbon dynamics in tropical soils remains limited, these results underscore the challenges of undertaking short-term reforestation projects with the expectation of increasing soil carbon sequestration.

Luisa Neumann-Cosel; Beate Zimmermann; Jefferson S. Hall; Michiel van Breugel; Helmut Elsenbeer

2011-01-01T23:59:59.000Z

437

Computational study of atmospheric transfer radiation on an equatorial tropical desert (La Tatacoa, Colombia)  

E-Print Network (OSTI)

Radiative transfer models explain and predict interaction between solar radiation and the different elements present in the atmosphere, which are responsible for energy attenuation. In Colombia there have been neither measurements nor studies of atmospheric components such as gases and aerosols that can cause turbidity and pollution. Therefore satellite images cannot be corrected radiometrically in a proper way. When a suitable atmospheric correction is carried out, loss of information is avoided, which may be useful for discriminating image land cover. In this work a computational model was used to find radiative atmospheric attenuation (300 1000nm wavelength region) on an equatorial tropical desert (La Tatacoa, Colombia) in order to conduct an adequate atmospheric correction.

Delgado-Correal, Camilo; Castaño, Gabriel

2012-01-01T23:59:59.000Z

438

Ecosystem service provision: An operational way for marine biodiversity conservation and management  

Science Journals Connector (OSTI)

Since no extensive conceptual framework has been developed on the issues of ecosystem service (ES) and service provider (SP) in the marine environment, we have made an attempt to apply these to the conservation and management of marine biodiversity. Within this context, an accurate individuation of SPs, namely the biological component of a given ecosystem that supports human activities is fundamental. \\{SPs\\} are the agents responsible for making the ES-based approach operational. The application of these concepts to the marine environment should be based on an model different to the terrestrial one. In the latter, the basic model envisages a matrix of a human-altered landscape with fragments of original biodiversity; conversely, in the marine environment the model provides fragments where human activities are carried out and the matrix is represented by the original biodiversity. We have identified three main classes of ES provision: in natural, disturbed and human-controlled environments. Economic valuation of marine \\{ESs\\} is an essential condition for making conservation strategies financially sustainable, as it may stimulate the perceived need for investing in protection and exploitation of marine resources.

Giuseppe Cognetti; Ferruccio Maltagliati

2010-01-01T23:59:59.000Z

439

Application of sewage sludge to non-agricultural ecosystems: Impacts of nitrogen on forests  

SciTech Connect

The Clean Water Act (CWA) of 1977 directed EPA to establish standards for use and disposal of sewage sludge (biosolids). This report is part of a larger study evaluating nutrient and contaminant impacts associated with the land application of biosolids in non-agricultural ecosystems. Ecological risk assessments rarely focus on nutrients as stressors. The nutrient components of municipal sewage sludge may impact tree community composition, growth and production, habitat and forage quality for wildlife, and nutrient cycling. The focus here is on three forest ecosystems: northwestern Douglas-fir forest (Pack Forest, WA), southeastern loblolly pine plantation (Athens, GA), and eastern deciduous forest (Hubbard Brook, NH). A model called LINKAGES has been developed at ORNL to examine the relationships between nitrogen cycling and long-term forest stand dynamics, limited by climate and soil water status. Plant-available nitrogen from biosolids is added in several application scenarios and compared to the no-amendment case. All changes are noted, even if they may be viewed as benefits rather than risks. Model outputs include: above-ground biomass, individual species biomass, net above-ground production, leaf litter, evapotranspiration, available nitrogen, and dead trunks. The changes in plant community composition and production are dependent on the rate, frequency, and duration of sludge application and on the age of the stand at the time of application. Model outputs are compared to empirical studies of forests where biosolids have been applied.

Efroymson, R.A.; Tharp, M.L.; Luxmoore, R.J.; Sample, B.E.; Barnthouse, L.W. [Oak Ridge National Lab., TN (United States); Daniel, F.B. [Environmental Protection Agency, Cincinnati, OH (United States)

1995-12-31T23:59:59.000Z

440

Informing the design and governance of a pro-poor payment for ecosystem services program in Western Panama.  

E-Print Network (OSTI)

??Human society depends on healthy ecosystems. Payments for ecosystem services (PES) have emerged as an incentive-based tool to protect and restore ecosystem-service flows, which are… (more)

Duke, Esther Alice

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "tropical ecosystem model" 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

The sharing of water between society and ecosystems: from conflict to catchment–based co–management  

Science Journals Connector (OSTI)

...variations of aquatic ecosystem requirements, not least...the best match between ecosystem and human requirements...different parts of the aquatic ecosystem and society. The critical...poverty of these people. Restoration of the Diawling Park...

2003-01-01T23:59:59.000Z

442

Estimation of radiation doses from 137Cs to frogs in a wetland ecosystem  

Science Journals Connector (OSTI)

Currently, there is no established methodology to estimate radiation doses to non-human biota. Therefore, in this study, various dose models were used to estimate radiation doses to moor frogs (Rana arvalis) in a wetland ecosystem contaminated with 137Cs. External dose estimations were based on activity concentrations of 137Cs in soil and water, considering changes in habitat over a life-cycle. Internal doses were calculated from the activity concentrations of 137Cs measured in moor frogs. Depending on the dose model used, the results varied substantially. External dose rates ranged from 21 to 160 mGy/y, and internal dose rates varied between 1 and 14 mGy/y. Maximum total dose rates to frogs were below the expected safe level for terrestrial populations, but close to the suggested critical dose rate for amphibians. The results show that realistic assumptions in dose models are particularly important at high levels of contamination.

K. Stark; R. Avila; P. Wallberg

2004-01-01T23:59:59.000Z

443

New perspectives in ecosystem services science as instruments to understand environmental securities  

Science Journals Connector (OSTI)

...New perspectives in ecosystem services science as instruments to understand environmental...IKERBASQUE, Basque Foundation for Science, , 48008 Bilbao, Spain 2 Gund Institute...life-sustaining resources grows, the science of ecosystem services (ES) is seen as...

2014-01-01T23:59:59.000Z

444

Fire and Thinning Effects on Mixed-Conifer Ecosystems  

E-Print Network (OSTI)

for low-intensity underburns but is now estimated to be over 600 years. · Tree density has dramatically out of a key question raised in the Sierra Nevada Ecosystem Project: Critical Findings Section, 1996. · Old-growth has fairly stable carbon and nutrient pools. · Old forest conditions are often what

North, Malcolm

445

Invited Paper: Wireless Sensor Networks for Ecosystem Monitoring & Port Surveillance  

E-Print Network (OSTI)

Invited Paper: Wireless Sensor Networks for Ecosystem Monitoring & Port Surveillance A. Mansour*1 of the most up-to-date innovations in sensor technology and sensor networks, our current project should as well as the second phase of the project which consists in analyzing living underwater micro

Paris-Sud XI, Université de

446

Functional consequences of realistic biodiversity changes in a marine ecosystem  

E-Print Network (OSTI)

Functional consequences of realistic biodiversity changes in a marine ecosystem Matthew E. S, 2007) Declines in biodiversity have prompted concern over the conse- quences of species loss the functional consequences of realistic, nonrandom changes in biodiversity. Instead, most designs have used

Brody, James P.

447

Restoration of ecosystem services and biodiversity: conflicts and  

E-Print Network (OSTI)

, explicitly link the conservation of biodiversity with the provision of ecosys- tem services to support services might be at the expense of biodiversity conservation [8,9], whereas others have suggestedRestoration of ecosystem services and biodiversity: conflicts and opportunities James M. Bullock1

Rey Benayas, José María

448

Ecosystem-Service Science and the Way Forward for Conservation  

E-Print Network (OSTI)

and enjoying traction in places where ethical argu- ments for biodiversity conservation are given short shriftEditorial Ecosystem-Service Science and the Way Forward for Conservation Conservation biology began life as a crisis discipline, its central tenet to understand and help reverse losses of biodiversity

Vermont, University of

449

ECOSYSTEM COMPONENT CHARACTERIZATION 461 Failing or nearby septic tank systems  

E-Print Network (OSTI)

ECOSYSTEM COMPONENT CHARACTERIZATION 461 · Failing or nearby septic tank systems · Exfiltration from sanitary sewers in poor repair · Leaking underground storage tanks and pipes · Landfill seepage or natural environment Leaks from underground storage tanks and pipes are a common source of soil

Pitt, Robert E.

450

1714(1) Winter 2006 Yellowstone Science NY ECOSYSTEM  

E-Print Network (OSTI)

;Yellowstone Science 14(1) · Winter 200618 photosynthetic members supplying energy to others. However, while in any of these ecosystems. One of the most important of these exchanged materials is energy. When we walk around the GYE, the energy source for the richness of life we can see is appar- ent

451

ASSESSING MACROINVERTEBRATE BIODIVERSITY IN FRESHWATER ECOSYSTEMS: ADVANCES AND CHALLENGES IN  

E-Print Network (OSTI)

ASSESSING MACROINVERTEBRATE BIODIVERSITY IN FRESHWATER ECOSYSTEMS: ADVANCES AND CHALLENGES IN DNA.suzanne@epamail.epa.gov David P. Larsen Pacific States Marine Fisheries Commission, Corvallis, Oregon 97333 USA e-mail: larsen, biodiversity, freshwater, next-generation sequencing abstract Assessing the biodiversity of macroinvertebrate

Pfrender, Michael

452

Valuing ecosystem services: A shadow price for net primary production  

E-Print Network (OSTI)

, Boston University, Boston, MA 02215, United States c Center for Energy & Environmental Studies, Boston 2007 We analyze the contribution of ecosystem services to GDP and use this contribution to calculate production per unit output. The rate of technical substitution indicates that the quantity of capital needed

Myneni, Ranga B.

453

Fisher Research and the Kings River Sustainable Forest Ecosystems Project  

E-Print Network (OSTI)

of the Sierra National Forest, Fresno County, California, with fieldwork beginning in 1994 (Verner and Figure 1--The Kings River administrative study area in the Sierra National Forest in central California includesFisher Research and the Kings River Sustainable Forest Ecosystems Project: Current Results

Standiford, Richard B.

454

Bioturbators enhance ecosystem function through complex biogeochemical interactions  

Science Journals Connector (OSTI)

... benthos could have global consequences, the significance of species loss to bentho-pelagic rates and processes remains poorly understood. Benthic sediments are replete with complex biogeochemical interactions, and ecosystem performance ... the net effects of their activities are difficult to predict because of the number of interrelated ...

Andrew M. Lohrer; Simon F. Thrush; Max M. Gibbs

2004-10-06T23:59:59.000Z

455

Sensors for ecology Towards integrated knowledge of ecosystems  

E-Print Network (OSTI)

Sensors for ecology Towards integrated knowledge of ecosystems CNRS Institut Ã?cologie et scales. This book provides an overview of current sensors for ecology and makes a strong case of practical ecological applications, this text is meant to be an invaluable resource for students, researchers

van Tiggelen, Bart

456

A new way to study the changing Arctic ecosystem  

ScienceCinema (OSTI)

Berkeley Lab scientists Susan Hubbard and Margaret Torn discuss the proposed Next Generation Ecosystem Experiment, which is designed to answer one of the most urgent questions facing researchers today: How will a changing climate impact the Arctic, and how will this in turn impact the planet's climate? More info: http://newscenter.lbl.gov/feature-stories/2011/09/14/alaska-climate-change/

Hubbard, Susan

2013-05-29T23:59:59.000Z

457

Tree Harvest in an Experimental Sand Ecosystem: Plant Effects on  

E-Print Network (OSTI)

to determine how trees affect the behavior of these nutrients in soil water, both during growth and afterTree Harvest in an Experimental Sand Ecosystem: Plant Effects on Nutrient Dynamics and Solute Sciences/US Department of Agriculture, Washington State University, Pullman, Washington 99164, USA; 4 USDA

Vermont, University of

458

Seasonal patterns in energy partitioning of two freshwater marsh ecosystems  

E-Print Network (OSTI)

). The study period included several wet and dry seasons and variable water levels, allowing us to gain better and affect the magnitude of seasonal change in water levels through water loss as LE (evapotranspiration (ET that produce considerable variation in the hydrologic cycle, affecting nutrient delivery, ecosystem primary

459

Home / News / People & Ecosystems NEWS RELEASE: Global Alliance Launched to  

E-Print Network (OSTI)

Home / News / People & Ecosystems NEWS RELEASE: Global Alliance Launched to Curb Trade in Illegal forestry lacey act united states The Forest Legality Alliance was launched today to support private sector efforts and policies to reduce trade in illegally harvested wood. The Alliance is a global public

460

Payments for Ecosystems Services Findings and Perceptions from the USA  

E-Print Network (OSTI)

Payments for Ecosystems Services Findings and Perceptions from the USA Policy Summary Jenna Coull market mechanisms. The use of these schemes has become more widespread particularly in the USA and some and conservation protection in the USA, large mitigation banks have emerged which provide credits for an area

Note: This page contains sample records for the topic "tropical ecosystem model" 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

Ecosystem recovery after climatic extremes enhanced by genotypic diversity  

E-Print Network (OSTI)

Ecosystem recovery after climatic extremes enhanced by genotypic diversity Thorsten B. H. Reusch with such climatic extremes is a question central to contem- porary ecology and biodiversity conservation. Previous, and it may buffer against extreme climatic events. In a manipulative field experiment, increasing

Myers, Ransom A.

462

Methane in lakes and wetlands Microbiological production, ecosystem  

E-Print Network (OSTI)

Methane in lakes and wetlands Microbiological production, ecosystem uptake, climatological significance LAKES AND WETLANDS ­ A RELEVANT METHANE SOURCE Lakes and other wetlands are an important source methane from wetlands will respond to future climatic change. Dr. Paul Bodelier (Netherlands Institute

Mühlemann, Oliver

463

Main Ecosystem Characteristics and Distribution of Wetlands in Boreal and  

E-Print Network (OSTI)

9 Main Ecosystem Characteristics and Distribution of Wetlands in Boreal and Alpine Landscapes. Nilsson and J. Svensson Swedish University of Agricultural Sciences Sweden 1. Introduction Wetlands filters in the landscape. Many kinds of wetlands and peatlands can be found, each with a particular

464

Tropical Africa: Land Use, Biomass, and Carbon Estimates for 1980  

NLE Websites -- All DOE Office Websites (Extended Search)

Tropical Africa: Land Use, Biomass, and Carbon Estimates for 1980 (NDP-055) Tropical Africa: Land Use, Biomass, and Carbon Estimates for 1980 (NDP-055) DOI: 10.3334/CDIAC/lue.ndp055 data Data PDF PDF graphics Graphics Please note: these data have been updated for the year 2000 Contributors Sandra Brown1 Greg Gaston2 Work on this project was initiated while at the Department of Natural Resources and Environmental Sciences University of Illinois Urbana, Illinois 61801, U.S.A. 1Present address: Winrock International, Arlington, Virgina. 2Present address: Department of Geosciences, Oregon State University. Prepared by T.W. Beaty, and L.M. Olsen. Carbon Dioxide Information Analysis Center Environmental Sciences Division OAK RIDGE NATIONAL LABORATORY Oak Ridge, Tennessee 37831-6290 managed by UT-Battelle, LLC for the U.S. DEPARTMENT OF ENERGY

465

NPP Tropical Forest: San Carlos De Rio Negro, Venezuela  

NLE Websites -- All DOE Office Websites (Extended Search)

San Carlos De Rio Negro, Venezuela, 1975-1984 San Carlos De Rio Negro, Venezuela, 1975-1984 [PHOTOGRAPH] Photograph: Cutting an experimental plot at San Carlos (click on the photo to view a series of images and a diagram of this site) Data Citation Cite this data set as follows: Jordan, C. F., E. Cuevas, and E. Medina. 1999. NPP Tropical Forest: San Carlos de Rio Negro, Venezuela, 1975-1984. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. Description Productivity of tropical forest was determined for a number of vegetation-soil associations at the San Carlos de Rio Negro study site, under the auspices of an international UNESCO Man and the Biosphere (MAB) project. The San Carlos study site (1.93 N 67.05 W) is situated 4 km east of the

466

Geographical Distribution of Biomass Carbon in Tropical Southeast Asian  

NLE Websites -- All DOE Office Websites (Extended Search)

Geographical Distribution of Biomass Carbon in Tropical Southeast Asian Geographical Distribution of Biomass Carbon in Tropical Southeast Asian Forests: A Database (NDP-068) DOI: 10.3334/CDIAC/lue.ndp068 data Data PDF PDF Appendix A is reprint of Brown et al. paper in Geocarto International, Vol. 8; copyright 1993 Geocarto International Centre and reprinted with kind permission from the publisher) image Contributors Sandra Brown1 Louis R. Iverson2 Anantha Prasad2 Department of Natural Resources and Environmental Sciences University of Illinois Urbana, Illinois 1Present address: Winrock International, Arlington, Virginia 2Present address: United States Forest Service, Northeast Research Station, Delaware, Ohio Prepared by Tammy W. Beaty, Lisa M. Olsen, Robert M. Cushman, and Antoinette L. Brenkert Carbon Dioxide Information Analysis Center

467

Perspective Climate change and the tropical Pacific  

E-Print Network (OSTI)

in climate model predictions. Several energy flows that powerfully affect our climate come to a confluence the cycle works. In thinking about oceanic heat trans- ports, 1 PW (1015 W) is a convenient number to keep in mind. The Atlantic THC accounts for roughly 1 PW of trans- port into the North Atlantic and domi- nates

Pierrehumbert, Raymond

468

Gardenification of tropical conserved wildlands: Multitasking, multicropping, and multiusers  

Science Journals Connector (OSTI)

...still put a lot of energy into, is...contracts and the valuations in them...biodegredation, carbon storage, seed sources...simply one of the tools in the toolbox...biodiversity is the best tool for a happy agroscape...quality biodiversity storage devices than...ecosystems are tools for a healthy...

Daniel Janzen

1999-01-01T23:59:59.000Z

469

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

SciTech Connect

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

470

Carbon Sequestration in Terrestrial Ecosystems (CSiTE) PRINCIPAL INVESTIGATOR: Stan D. Wullschleger  

E-Print Network (OSTI)

Carbon Sequestration in Terrestrial Ecosystems (CSiTE) PRINCIPAL INVESTIGATOR: Stan D. Wullschleger://csite.eds.ornl.gov PROJECT DESCRIPTION The Carbon Sequestration in Terrestrial Ecosystems (CSiTE) project conducts research of switchgrass growing in the field. #12;Carbon Sequestration in Terrestrial Ecosystems (CSiTE) tion of inputs

471

Prolonged suppression of ecosystem carbon dioxide uptake after an anomalously warm year  

E-Print Network (OSTI)

, such as temperature anomalies, on NEE and carbon sequestration of ecosystems at interannual timescales have beenLETTERS Prolonged suppression of ecosystem carbon dioxide uptake after an anomalously warm year , Yiqi Luo5 & David S. Schimel6 Terrestrial ecosystems control carbon dioxide fluxes to and from

Cai, Long

472

Accounting for Ecosystem Services in Life Cycle Assessment, Part II: Toward an Ecologically Based LCA  

Science Journals Connector (OSTI)

Accounting for Ecosystem Services in Life Cycle Assessment, Part II: Toward an Ecologically Based LCA ... Accounting for the role of ecosystem services is essential for LCA to guide decisions toward sustainability; Eco-LCA is a step in this direction. ... This article presents a step toward including the direct and indirect role of ecosystems in LCA, and a hierarchical scheme to interpret their contribution. ...

Yi Zhang; Anil Baral; Bhavik R. Bakshi

2010-02-24T23:59:59.000Z

473

Research, assessment and management on the Mascarene Plateau: a large marine ecosystem perspective  

Science Journals Connector (OSTI)

...different sciences, quan...reactive approach to ecosystem management needs to...assessment and management on the Mascarene...marine science, training...ecosystem approach to regional...of Marine Science. Salvat...ecosystem approach to global assessment and management of coastal...

2005-01-01T23:59:59.000Z

474

Utilization of Biomass in Mediterranean-Type Ecosystems: A Summary and Synthesis1  

E-Print Network (OSTI)

Utilization of Biomass in Mediterranean-Type Ecosystems: A Summary and Synthesis1 C. Eugene Conrad of Mediterranean- type ecosystems to supply biomass as a supplemen- tal source of energy is a natural result to less than 25° C. Also, wet-season precip- itation approaches 1000 mm. Biomass from such ecosystems

Standiford, Richard B.

475

GLOBAL CHANGE ECOLOGY -ORIGINAL RESEARCH Ecosystems effects 25 years after Chernobyl: pollinators,  

E-Print Network (OSTI)

GLOBAL CHANGE ECOLOGY - ORIGINAL RESEARCH Ecosystems effects 25 years after Chernobyl: pollinators, fruit abundance and abundance of frugivores. Given that the Chernobyl disaster happened 25 years ago of a suppressed pollinator community on ecosystem functioning. Keywords Chernobyl Á Ecosystem functioning Á Fruits

Mousseau, Timothy A.

476

GLOBAL CHANGE ECOLOGY -ORIGINAL RESEARCH Ecosystems effects 25 years after Chernobyl: pollinators,  

E-Print Network (OSTI)

GLOBAL CHANGE ECOLOGY - ORIGINAL RESEARCH Ecosystems effects 25 years after Chernobyl: pollinators, pollinator abundance, fruit abundance and abundance of frugivores. Given that the Chernobyl disaster happened of a suppressed pollinator community on ecosystem functioning. Keywords Chernobyl Á Ecosystem functioning Á Fruits

Mousseau, Timothy A.

477

Genetic variation changes the interactions between the parasitic plant-ecosystem engineer Rhinanthus and its hosts  

Science Journals Connector (OSTI)

...variation|ecosystem engineer|Rhinanthus...genotype and genotype environment interactions in...well as micro-environment [9], and host...of an ecosystem engineer, the goldenrod...Plant genotype and environment interact to shape...of an ecosystem engineer. Ecology 88...

2011-01-01T23:59:59.000Z

478

VEGETATED ROOFS FOR URBAN ECOSYSTEM REMEDIATION: PERFORMANCE AND POLICY IN THE TANYARD BRANCH WATERSHED  

E-Print Network (OSTI)

VEGETATED ROOFS FOR URBAN ECOSYSTEM REMEDIATION: PERFORMANCE AND POLICY IN THE TANYARD BRANCH their environmental impact, innovative practices must be developed that replace ecosystem services lost during systems for urban ecosystem remediation. The stormwater retention performance of a thin-layer green roof

Rosemond, Amy Daum

479

UPPER DES PLAINES RIVER AND TRIBUTARIES, IL & WI FLOOD RISK MANAGEMENT AND ECOSYSTEM RESTORATION PROJECT  

E-Print Network (OSTI)

risk to residential and commercial structures and restore impaired aquatic ecosystems in the watershedUPPER DES PLAINES RIVER AND TRIBUTARIES, IL & WI FLOOD RISK MANAGEMENT AND ECOSYSTEM RESTORATION / National Ecosystem Restoration (NED/NER) Plan. The Recommended Plan includes five structural flood risk

US Army Corps of Engineers

480

Managing for Variability to Sustain Freshwater Ecosystems N. LeRoy Poff  

E-Print Network (OSTI)

needs has come at a significant cost to the natural functioning of aquatic and riparian ecosystems provided to human society from maintaining healthy aquatic and riparian ecosystems, coupled with the high cost and difficulty of restoring degraded ecosystems Bernhardt et al. 2005 , have fueled the growing

Poff, N. LeRoy

Note: This page contains sample records for the topic "tropical ecosystem model" 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.


481

ERDC/ELTR-13-9 Ecosystem Management and Restoration Research Program  

E-Print Network (OSTI)

of Native Plants for Vegetative Restoration of Aquatic Ecosystems EnvironmentalLaboratory Gary O. Dick, R and Establishment of Native Plants for Vegetative Restoration of Aquatic Ecosystems Gary O. Dick and R. MichaelERDC/ELTR-13-9 Ecosystem Management and Restoration Research Program Propagation and Establishment

US Army Corps of Engineers

482

Tropical Cyclogenesis Factors in a Warming Climate  

E-Print Network (OSTI)

(TC) development (Emanuel et al., 2008). The conditions favorable for TC formation and development have been known for more than forty years (Gray 1968), and, although it is crucial to understanding how and why these conditions are important for TC... TC frequency (Emanuel 2005; Webster et al. 2005), but there is also model evidence that the number of cyclones may simultaneously decline (Knutson et al. 2007; Knutson et al. 2010). Maximum potential intensity (MPI) theory predicts that intensity...

Cathey, Stephen Christopher

2012-02-14T23:59:59.000Z

483

Submerged aquatic vegetation and bulrush in Lake Okeechobee as indicators of greater Everglades ecosystem restoration  

Science Journals Connector (OSTI)

Lake Okeechobee, Florida, located in the middle of the larger Kissimmee River-Lake Okeechobee-Everglades ecosystem in South Florida, serves a variety of ecosystem and water management functions including fish and wildlife habitat, flood control, water supply, and source water for environmental restoration. As a result, the ecological status of Lake Okeechobee plays a significant role in defining the overall success of the greater Everglades ecosystem restoration initiative. One of the major ecological indicators of Lake Okeechobee condition focuses on the near-shore and littoral zone regions as characterized by the distribution and abundance of submerged aquatic vegetation (SAV) and giant bulrush (Scirpus californicus (C.A. Mey.) Steud.). The objective of this study is to present a stoplight restoration report card communication system, common to all 11 indicators noted in this special journal issue, as a means to convey the status of SAV and bulrush in Lake Okeechobee. The report card could be used by managers, policy makers, scientists and the public to effectively evaluate and distill information about the ecological status in South Florida. Our assessment of the areal distribution of SAV in Lake Okeechobee is based on a combination of empirical SAV monitoring and output from a SAV habitat suitability model. Bulrush status in the lake is related to a suitability index linked to adult survival and seedling establishment metrics. Overall, presentation of these performance metrics in a stoplight format enables an evaluation of how the status of two major components of Lake Okeechobee relates to the South Florida restoration program, and how the status of the lake influences restoration efforts in South Florida.

Matthew C. Harwell; Bruce Sharfstein

2009-01-01T23:59:59.000Z

484

Universidade de Braslia Faculdade de Medicina Programa de Ps-Graduao em Medicina Tropical  

E-Print Network (OSTI)

Universidade de Brasília ­ Faculdade de Medicina Programa de Pós-Graduação em Medicina Tropical Edital n o . 1/2012 1 PROGRAMA DE P�S-GRADUA��O EM MEDICINA TROPICAL EDITAL No. 01/2012 SELE��O DE CANDIDATOS �S VAGAS DO PROGRAMA DE P�S-GRADUA��O EM MEDICINA TROPICAL PARA OS CURSOS DE MESTRADO ACAD�MICO E

Maier, Rudolf Richard

485

UNIVERSIDADE DE BRASLIA PROGRAMA DE PS-GRADUAO EM MEDICINA TROPICAL  

E-Print Network (OSTI)

UNIVERSIDADE DE BRASÍLIA PROGRAMA DE P�S-GRADUA��O EM MEDICINA TROPICAL EDITAL No. 02/2010 SELE��O DE CANDIDATOS �S VAGAS DO PROGRAMA DE P�S-GRADUA��O EM MEDICINA TROPICAL PARA OS CURSOS DE MESTRADO Pós-Graduação em Medicina Tropical, no uso de suas atribuições legais, torna público e estabelece

Maier, Rudolf Richard

486

UNIVERSIDADE DE BRASLIA PROGRAMA DE PS-GRADUAO EM MEDICINA TROPICAL  

E-Print Network (OSTI)

UNIVERSIDADE DE BRASÍLIA PROGRAMA DE P�S-GRADUA��O EM MEDICINA TROPICAL EDITAL No. 01/2009 SELE��O DE CANDIDATOS �S VAGAS DO PROGRAMA DE P�S-GRADUA��O EM MEDICINA TROPICAL PARA OS CURSOS DE MESTRADO INFECCIOSAS E PARASITÁRIAS 1. PRE�MBULO 1.1 O Coordenador do Programa de Pós-Graduação em Medicina Tropical

Maier, Rudolf Richard

487

UNIVERSIDADE DE BRASLIA PROGRAMA DE PS-GRADUAO EM MEDICINA TROPICAL  

E-Print Network (OSTI)

UNIVERSIDADE DE BRASÍLIA PROGRAMA DE P�S-GRADUA��O EM MEDICINA TROPICAL EDITAL No. 03/2011 SELE��O DE CANDIDATOS �S VAGAS DO PROGRAMA DE P�S-GRADUA��O EM MEDICINA TROPICAL PARA OS CURSOS DE MESTRADO Graduação em Medicina Tropical, no uso de suas atribuições legais, torna público e estabelece a retificação

Lucero, Jorge Carlos

488

UNIVERSIDADE DE BRASLIA PROGRAMA DE PS-GRADUAO EM MEDICINA TROPICAL  

E-Print Network (OSTI)

1 UNIVERSIDADE DE BRASÍLIA PROGRAMA DE P�S-GRADUA��O EM MEDICINA TROPICAL EDITAL No. 02/2011 SELE��O DE CANDIDATOS �S VAGAS DO PROGRAMA DE P�S-GRADUA��O EM MEDICINA TROPICAL PARA OS CURSOS DE de Pós Graduação em Medicina Tropical, no uso de suas atribuições legais, torna público e estabelece

Lucero, Jorge Carlos

489

Evaluating the Contribution of Climate Forcing and Forest Dynamics to Accelerating Carbon Sequestration by Forest Ecosystems in the Northeastern U.S.: Final Report  

SciTech Connect

This report summarizes work to improve quantitative understanding of the terrestrial ecosystem processes that control carbon sequestration in unmanaged forests It builds upon the comprehensive long-term observations of CO2 fluxes, climate and forest structure and function at the Harvard Forest in Petersham, MA. This record includes the longest CO2 flux time series in the world. The site is a keystone for the AmeriFlux network. Project Description The project synthesizes observations made at the Harvard Forest HFEMS and Hemlock towers, which represent the dominant mixed deciduous and coniferous forest types in the northeastern United States. The 20+ year record of carbon uptake at Harvard Forest and the associated comprehensive meteorological and biometric data, comprise one of the best data sets to challenge ecosystem models on time scales spanning hourly, daily, monthly, interannual and multi-decadal intervals, as needed to understand ecosystem change and climate feedbacks.

Munger, J. William [Harvard University, SEAS] (ORCID:0000000210428452); Foster, David R. [Harvard University, Harvard Forest; Richardson, Andrew D. [Harvard University, OEB

2014-10-01T23:59:59.000Z

490

Galaxy Ecosystems: gas contents, inflows and outflows  

E-Print Network (OSTI)

We use a set of observational data for galaxy cold gas mass fraction and gas phase metallicity to constrain the content, inflow and outflow of gas in central galaxies hosted by halos with masses between $10^{11} M_{\\odot}$ to $10^{12} M_{\\odot}$. The gas contents in high redshift galaxies are obtained by combining the empirical star formation histories of Lu et al. (2014) and star formation models that relate star formation rate with the cold gas mass in galaxies. We find that the total baryon mass in low-mass galaxies is always much less than the universal baryon mass fraction since $z = 2$, regardless of star formation model adopted. The data for the evolution of the gas phase metallicity require net metal outflow at $z\\lesssim 2$, and the metal loading factor is constrained to be about $0.01$, or about $60\\%$ of the metal yield. Based on the assumption that galactic outflow is more enriched in metal than both the interstellar medium and the material ejected at earlier epochs, we are able to put stringent c...

Lu, Zhankui; Lu, Yu

2014-01-01T23:59:59.000Z

491

E-Print Network 3.0 - abrupt tropical climate Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

tropical climate Page: << < 1 2 3 4 5 > >> 1 Long-term climate variability and abrupt climate change Instructor: Dr. Igor Kamenkovich, associate professor Summary: Long-term...

492

Relationships between global warming and tropical cyclone activity in the Western North Pacific .  

E-Print Network (OSTI)

??In this work, we investigate the relationships between global warming and tropical cyclone activity in the Western North Pacific (WNP). Our hypothesis is that global… (more)

Meyer, David W.

2007-01-01T23:59:59.000Z

493

E-Print Network 3.0 - asian tropical rain Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

out that in the case of tropical cyclones or warm rain, substantial amounts... the flash density. CG-lightning and precipitation data are used to compute the values ......

494

E-Print Network 3.0 - afromontane tropical forest Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

OWEN T. LEWIS1 AND ... Source: Basset, Yves - Smithsonian Tropical Research Institute, Panama Collection: Environmental Sciences and Ecology 16 A Reference Guide to Conflicting...

495

Connection of the Panama fracture zone with the Galapagos rift zone, eastern tropical Pacific  

Science Journals Connector (OSTI)

Magnetic data recently collected in the eastern tropical Pacific confirm that the Galapagos rift zone is connected to the Panama fracture zone by a short north-south...

Paul J. Grim

1970-08-01T23:59:59.000Z

496

Deep Signatures of Southern Tropical Indian Ocean Annual Rossby Waves* GREGORY C. JOHNSON  

E-Print Network (OSTI)

Deep Signatures of Southern Tropical Indian Ocean Annual Rossby Waves* GREGORY C. JOHNSON NOAA Environmental Laboratory Contribution Number 3671. Corresponding author address: Gregory C. Johnson, NOAA

Johnson, Gregory C.

497

E-Print Network 3.0 - annual tropical cyclone Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

of tropical ... Source: Kossin, James P. - Cooperative Institute of Meteorological Satellite Studies, University of Wisconsin at Madison Collection: Geosciences 11 Ch.8...

498

Tropical Pacific nutrient dynamics in the modern and Pleistocene ocean| Insights from the nitrogen isotope system.  

E-Print Network (OSTI)

?? The tropical Pacific is a region where nutrient delivery, upper ocean dynamics, and global climate variability are tightly coupled. For example, the depth of… (more)

Rafter, Patrick Anthony

2009-01-01T23:59:59.000Z

499

Tropical Pacific nutrient dynamics in the modern and pleistocene ocean : insights from the nitrogen isotope system.  

E-Print Network (OSTI)

??The tropical Pacific is a region where nutrient delivery, upper ocean dynamics, and global climate variability are tightly coupled. For example, the depth of the… (more)

Rafter, Patrick Anthony

2009-01-01T23:59:59.000Z

500

Investigation of Climate Forcing Agents on Tropical Belt Width Through the 21st Century  

E-Print Network (OSTI)

2004). “Changes in the tropical Hadley cell since 1950. ”The Hadley Circulation: Present, Past, and Future, 85-120.poleward expansion of the Hadley circulation since 1979. ”

Ajoku, Osinachi

2014-01-01T23:59:59.000Z