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Note: This page contains sample records for the topic "land-surface climatology project" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
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1

The Land Surface Climatology of the NCAR Land Surface Model Coupled to the NCAR Community Climate Model  

Science Conference Proceedings (OSTI)

The National Center for Atmospheric Research (NCAR) Land Surface Model (LSM, version 1.0) provides a comprehensive treatment of land surface processes for the NCAR Community Climate Model version 3 (CCM3). It replaces the prescribed surface ...

Gordon B. Bonan

1998-06-01T23:59:59.000Z

2

The Project for Intercomparison of Land-surface Parameterization Schemes  

Science Conference Proceedings (OSTI)

The Project for Intercomparison of Land-surface Parameterization Schemes (PILPS) is described and the first stage science plan outlined. PILPS is a project designed to improve the parameterization of the continental surface, especially the ...

A. Henderson-Sellers; Z-L. Yang; R. E. Dickinson

1993-07-01T23:59:59.000Z

3

ISLSCP II Project Page  

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

ISLSCP II The International Satellite Land Surface Climatology Project, Initiative II (ISLSCP II) Overview ISLSCP II Logo The International Satellite Land Surface Climatology...

4

The Project for Intercomparison of Land Surface Parameterization Schemes (PILPS): Phases 2 and 3  

Science Conference Proceedings (OSTI)

The World Climate Research Programme Project for Intercomparison of Land Surface Parameterization Schemes (PILPS) is moving into its second and third phases that will exploit observational data and consider the performance of land surface schemes ...

A. Henderson-Sellers; A. J. Pitman; P. K. Love; P. Irannejad; T. H. Chen

1995-04-01T23:59:59.000Z

5

Cabauw Experimental Results from the Project for Intercomparison of Land-Surface Parameterization Schemes  

Science Conference Proceedings (OSTI)

In the Project for Intercomparison of Land-Surface Parameterization Schemes phase 2a experiment, meteorological data for the year 1987 from Cabauw, the Netherlands, were used as inputs to 23 land-surface flux schemes designed for use in climate ...

T. H. Chen; A. Henderson-Sellers; P. C. D. Milly; A. J. Pitman; A. C. M. Beljaars; J. Polcher; F. Abramopoulos; A. Boone; S. Chang; F. Chen; Y. Dai; C. E. Desborough; R. E. Dickinson; L. Dümenil; M. Ek; J. R. Garratt; N. Gedney; Y. M. Gusev; J. Kim; R. Koster; E. A. Kowalczyk; K. Laval; J. Lean; D. Lettenmaier; X. Liang; J.-F. Mahfouf; H.-T. Mengelkamp; K. Mitchell; O. N. Nasonova; J. Noilhan; A. Robock; C. Rosenzweig; J. Schaake; C. A. Schlosser; J.-P. Schulz; Y. Shao; A. B. Shmakin; D. L. Verseghy; P. Wetzel; E. F. Wood; Y. Xue; Z.-L. Yang; Q. Zeng

1997-06-01T23:59:59.000Z

6

Comparison of the Land-Surface Interaction in the ECMWF Reanalysis Model with the 1987 FIFE Data  

Science Conference Proceedings (OSTI)

Data from the First ISLSCP (International Satellite Land Surface Climatology Project) Field Experiment for the summer season of 1987 are used to assess the land-surface interaction of the ECMWF reanalysis. In comparison with an earlier study, ...

Alan K. Betts; Pedro Viterbo; Anton C. M. Beljaars

1998-01-01T23:59:59.000Z

7

The Rhône-Aggregation Land Surface Scheme Intercomparison Project: An Overview  

Science Conference Proceedings (OSTI)

The Rhône-Aggregation (Rhône-AGG) Land Surface Scheme (LSS) intercomparison project is an initiative within the Global Energy and Water Cycle Experiment (GEWEX)/Global Land–Atmosphere System Study (GLASS) panel of the World Climate Research ...

A. Boone; F. Habets; J. Noilhan; D. Clark; P. Dirmeyer; S. Fox; Y. Gusev; I. Haddeland; R. Koster; D. Lohmann; S. Mahanama; K. Mitchell; O. Nasonova; G.-Y. Niu; A. Pitman; J. Polcher; A. B. Shmakin; K. Tanaka; B. van den Hurk; S. Vérant; D. Verseghy; P. Viterbo; Z.-L. Yang

2004-01-01T23:59:59.000Z

8

Assimilation of Satellite-Derived Skin Temperature Observations into Land Surface Models  

Science Conference Proceedings (OSTI)

Land surface (or “skin”) temperature (LST) lies at the heart of the surface energy balance and is a key variable in weather and climate models. In this research LST retrievals from the International Satellite Cloud Climatology Project (ISCCP) are ...

Rolf H. Reichle; Sujay V. Kumar; Sarith P. P. Mahanama; Randal D. Koster; Q. Liu

2010-10-01T23:59:59.000Z

9

The Global Precipitation Climatology Project: First Algorithm Intercomparison Project  

Science Conference Proceedings (OSTI)

The Global Precipitation Climatology Project (GPCP) was established by the World Climate Research Programme to produce global analyses of area- and time-averaged precipitation for use in climate research. To achieve the required spatial coverage, ...

Phillip A. Arkin; Pingping Xie

1994-03-01T23:59:59.000Z

10

The CSIRO Mk3L climate system model v1.0 coupled to the CABLE land surface scheme v1.4b: evaluation of the control climatology  

SciTech Connect

The CSIRO Mk3L climate system model, a reduced-resolution coupled general circulation model, has previously been described in this journal. The model is configured for millennium scale or multiple century scale simulations. This paper reports the impact of replacing the relatively simple land surface scheme that is the default parameterisation in Mk3L with a sophisticated land surface model that simulates the terrestrial energy, water and carbon balance in a physically and biologically consistent way. An evaluation of the new model s near-surface climatology highlights strengths and weaknesses, but overall the atmospheric variables, including the near-surface air temperature and precipitation, are simulated well. The impact of the more sophisticated land surface model on existing variables is relatively small, but generally positive. More significantly, the new land surface scheme allows an examination of surface carbon-related quantities including net primary productivity which adds significantly to the capacity of Mk3L. Overall, results demonstrate that this reduced-resolution climate model is a good foundation for exploring long time scale phenomena. The addition of the more sophisticated land surface model enables an exploration of important Earth System questions including land cover change and abrupt changes in terrestrial carbon storage.

Mao, Jiafu [ORNL; Phipps, S.J. [University of New South Wales; Pitman, A.J. [University of New South Wales; Wang, Yingping [CSIRO Marine and Atmospheric Research; Abramowitz, G. [University of New South Wales; Pak, B. [CSIRO Marine and Atmospheric Research

2011-01-01T23:59:59.000Z

11

Estimating Climatological Bias Errors for the Global Precipitation Climatology Project (GPCP)  

Science Conference Proceedings (OSTI)

A procedure is described to estimate bias errors for mean precipitation by using multiple estimates from different algorithms, satellite sources, and merged products. The Global Precipitation Climatology Project (GPCP) monthly product is used as a ...

Robert F. Adler; Guojun Gu; George J. Huffman

2012-01-01T23:59:59.000Z

12

A History and Review of the Global Soil Wetness Project (GSWP)  

Science Conference Proceedings (OSTI)

The Global Soil Wetness Project (GSWP) is an international land surface modeling research effort involving dataset production, validation, model comparison, and scientific investigation in the areas of land surface hydrology and climatology. GSWP ...

Paul A. Dirmeyer

2011-10-01T23:59:59.000Z

13

Initial Validation of the Global Precipitation Climatology Project Monthly Rainfall over the United States  

Science Conference Proceedings (OSTI)

The Global Precipitation Climatology Project (GPCP) established a multiyear global dataset of satellite-based estimates of monthly rainfall accumulations averaged over a grid of 2.5° × 2.5° geographical boxes. This paper describes an attempt to ...

Witold F. Krajewski; Grzegorz J. Ciach; Jeffrey R. McCollum; Ciprian Bacotiu

2000-07-01T23:59:59.000Z

14

Normalization and Calibration of Geostationary Satellite Radiances for the international Satellite Cloud Climatology Project  

Science Conference Proceedings (OSTI)

Procedures are described for normalizing the radiometric calibration of image radiances obtained from the suite of geostationary weather satellites that contributed data to the international Satellite Cloud Climatology Project. The key step is ...

Yves Desormeaux; William B. Rossow; Christopher L. Brest; G. Garrett Campbell

1993-06-01T23:59:59.000Z

15

The Version-2 Global Precipitation Climatology Project (GPCP) Monthly Precipitation Analysis (1979–Present)  

Science Conference Proceedings (OSTI)

The Global Precipitation Climatology Project (GPCP) Version-2 Monthly Precipitation Analysis is described. This globally complete, monthly analysis of surface precipitation at 2.5° latitude × 2.5° longitude resolution is available from January ...

Robert F. Adler; George J. Huffman; Alfred Chang; Ralph Ferraro; Ping-Ping Xie; John Janowiak; Bruno Rudolf; Udo Schneider; Scott Curtis; David Bolvin; Arnold Gruber; Joel Susskind; Philip Arkin; Eric Nelkin

2003-12-01T23:59:59.000Z

16

Comparison of a Land Surface Model (SSiB) to Three Parameterizations of Evapotranspiration—A Study Based on ISLSCP Initiative I Data  

Science Conference Proceedings (OSTI)

Four different methods of estimating land surface evapotranspiration are compared by forcing each scheme with near-surface atmospheric and soil- and vegetation-type forcing data available through International Satellite Land Surface Climatology ...

David M. Mocko; Y. C. Sud

1998-01-01T23:59:59.000Z

17

A Review of Satellite Data Algorithms for Studies of the Land Surface  

Science Conference Proceedings (OSTI)

Satellite observations are essential for the global monitoring of climatologically significant interactions between the earth's atmosphere and land surface. In practice, however, interpretation of remote-sensing data requires the use of ...

P. J. Sellers; S. I. Rasool; H-J. Bolle

1990-10-01T23:59:59.000Z

18

The Interplay between Transpiration and Runoff Formulations in Land Surface Schemes Used with Atmospheric Models  

Science Conference Proceedings (OSTI)

The Project for Intercomparison of Land-surface Parameterization Schemes (PILPS) has shown that different land surface models (LSMs) driven by the same meteorological forcing can produce markedly different surface energy and water budgets, even ...

Randal D. Koster; P. C. D. Milly

1997-07-01T23:59:59.000Z

19

The Representation of Snow in Land Surface Schemes: Results from PILPS 2(d)  

Science Conference Proceedings (OSTI)

Twenty-one land surface schemes (LSSs) performed simulations forced by 18 yr of observed meteorological data from a grassland catchment at Valdai, Russia, as part of the Project for the Intercomparison of Land-Surface Parameterization Schemes (...

A. G. Slater; C. A. Schlosser; C. E. Desborough; A. J. Pitman; A. Henderson-Sellers; A. Robock; K. Ya Vinnikov; J. Entin; K. Mitchell; F. Chen; A. Boone; P. Etchevers; F. Habets; J. Noilhan; H. Braden; P. M. Cox; P. de Rosnay; R. E. Dickinson; Z-L. Yang; Y-J. Dai; Q. Zeng; Q. Duan; V. Koren; S. Schaake; N. Gedney; Ye M. Gusev; O. N. Nasonova; J. Kim; E. A. Kowalczyk; A. B. Shmakin; T. G. Smirnova; D. Verseghy; P. Wetzel; Y. Xue

2001-02-01T23:59:59.000Z

20

Development of a Coupled Land Surface and Groundwater Model  

Science Conference Proceedings (OSTI)

Traditional land surface models (LSMs) used for numerical weather simulation, climate projection, and as inputs to water management decision support systems, do not treat the LSM lower boundary in a fully process-based fashion. LSMs have evolved ...

Reed M. Maxwell; Norman L. Miller

2005-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "land-surface climatology project" 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

A Global Climate Model (GENESIS) with a Land-Surface Transfer Scheme (LSX). Part I: Present Climate Simulation  

Science Conference Proceedings (OSTI)

The present-day climatology of a global climate model (GENESIS Version 1.02) is described. The model includes a land-surface transfer component (LSX) that accounts for the physical effects of vegetation. The atmospheric general circulation model ...

Starley L. Thompson; David Pollard

1995-04-01T23:59:59.000Z

22

The IAGL Land Surface Model  

Science Conference Proceedings (OSTI)

A model that computes the fluxes of energy and momentum between the land surface and the atmosphere is presented. It is designed to serve as a lower boundary in a mesoscale atmospheric model and is intended to be used to study the influence of ...

Koen De Ridder; Guy Schayes

1997-02-01T23:59:59.000Z

23

Extreme Maximum Land Surface Temperatures  

Science Conference Proceedings (OSTI)

There are numerous reports in the literature of observations of land surface temperatures. Some of these, almost all made in situ, reveal maximum values in the 50°–70°C range, with a few, made in desert regions, near 80°C. Consideration of a ...

J. R. Garratt

1992-09-01T23:59:59.000Z

24

Global scale hydrology - Advances in land surface modeling  

Science Conference Proceedings (OSTI)

Research into global scale hydrology is an expanding area that includes researchers from the meteorology, climatology, ecology and hydrology communities. This paper reviews research in this area carried out in the United States during the last IUGG quadrennial period of 1987-1990. The review covers the representation of land-surface hydrologic processes for general circulation models (GCMs), sensitivity analysis of these representations on global hydrologic fields like precipitation, regional studies of climate that have global hydrologic implications, recent field studies and experiments whose aims are the improved understanding of land surface-atmospheric interactions, and the use of remotely sensed data for the further understanding of the spatial variability of surface hydrologic processes that are important at regional and global climate scales. 76 refs.

Wood, E.F. (USAF, Geophysics Laboratory, Hanscom AFB, MA (United States))

1991-01-01T23:59:59.000Z

25

Time Scales of Land Surface Hydrology  

Science Conference Proceedings (OSTI)

This paper intends to investigate the time scales of land surface hydrology and enhance the understanding of the hydrological cycle between the atmosphere, vegetation, and soil. A three-layer model for land surface hydrology is developed to study ...

Aihui Wang; Xubin Zeng; Samuel S. P. Shen; Qing-Cun Zeng; Robert E. Dickinson

2006-10-01T23:59:59.000Z

26

Intercomparison and analyses of the climatology of the West African Monsoon in the West African Monsoon Modeling and Evaluation project (WAMME) first model intercomparison experiment  

E-Print Network (OSTI)

of the climatology of the West African Monsoon in theWest African Monsoon Modeling and Evaluation project (the West African Monsoon (WAM) Modeling and Evaluation

2010-01-01T23:59:59.000Z

27

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

Science Conference Proceedings (OSTI)

Because land surface emissivity (?) has not been reliably measured, global climate model (GCM) land surface schemes conventionally set this parameter as simply constant, for example, 1 as in the National Oceanic and Atmospheric Administration (...

Menglin Jin; Shunlin Liang

2006-06-01T23:59:59.000Z

28

A New Characterization of the Land Surface Heterogeneity over Africa for Use in Land Surface Models  

Science Conference Proceedings (OSTI)

Information related to land surface is immensely important to global change science. For example, land surface changes can alter regional climate through its effects on fluxes of water, energy, and carbon. In the past decades, data sources and ...

Armel Thibaut Kaptué Tchuenté; Jean-Louis Roujean; Agnès Bégué; Sietse O. Los; Aaron A. Boone; Jean-François Mahfouf; Dominique Carrer; Badiane Daouda

2011-12-01T23:59:59.000Z

29

Evaluating the Performance of Land Surface Models  

Science Conference Proceedings (OSTI)

This paper presents a set of analytical tools to evaluate the performance of three land surface models (LSMs) that are used in global climate models (GCMs). Predictions of the fluxes of sensible heat, latent heat, and net CO2 exchange obtained ...

Gab Abramowitz; Ray Leuning; Martyn Clark; Andy Pitman

2008-11-01T23:59:59.000Z

30

Systematic Bias in Land Surface Models  

Science Conference Proceedings (OSTI)

A neural network–based flux correction technique is applied to three land surface models. It is then used to show that the nature of systematic model error in simulations of latent heat, sensible heat, and the net ecosystem exchange of CO2 is ...

Gab Abramowitz; Andy Pitman; Hoshin Gupta; Eva Kowalczyk; Yingping Wang

2007-10-01T23:59:59.000Z

31

Optimally Merging Precipitation to Minimize Land Surface Modeling Errors  

Science Conference Proceedings (OSTI)

This paper introduces a new method to improve land surface model skill by merging different available precipitation datasets, given that an accurate land surface parameter ground truth is available. Precipitation datasets are merged with the ...

M. Tugrul Yilmaz; Paul Houser; Roshan Shrestha; Valentine G. Anantharaj

2010-03-01T23:59:59.000Z

32

FIFE Project Page  

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

Follow-On Follow-On The First ISLSCP Field Experiment (FIFE) Follow-On Project FIFE Follow-On Overview [FIFE Logo] The FIFE Follow-On project was a large-scale climatology project conducted on the Konza Prairie in Kansas from 1990 through 1993. It includes additional analysis of the data collected in the First ISLSCP (International Satellite Land Surface Climatology Project) Field Experiment (FIFE) from 1987 through 1989, as well as additional field measurements. The over-arching goal of the FIFE Follow-On project was to develop a physically based approach for using satellite remote-sensing systems. More specifically the project focused on: understanding the biophysical processes controlling the fluxes of exchanges of radiation, moisture, and carbon dioxide between the land

33

GSWP-2: Multimodel Analysis and Implications for Our Perception of the Land Surface  

Science Conference Proceedings (OSTI)

The Second Global Soil Wetness Project (GSWP-2) is an initiative to compare and evaluate 10-year simulations by a broad range of land surface models under controlled conditions. A major product of GSWP-2 is the first global gridded multimodel ...

Paul A. Dirmeyer; Xiang Gao; Mei Zhao; Zhichang Guo; Taikan Oki; Naota Hanasaki

2006-10-01T23:59:59.000Z

34

Modeling land-surface/atmosphere dynamics for CHAMMP  

SciTech Connect

Project progress is described on a DOE CHAMP project to model the land-surface/atmosphere coupling in a heterogeneous environment. This work is a collaboration between scientists at Iowa State University and the University of New Hampshire. Work has proceeded in two areas: baseline model coupling and data base development for model validation. The core model elements (land model, atmosphere model) have been ported to the Principal Investigator's computing system and baseline coupling has commenced. The initial target data base is the set of observations from the FIFE field campaign, which is in the process of being acquired. For the remainder of the project period, additional data from the region surrounding the FIFE site and from other field campaigns will be acquired to determine how to best extrapolate results from the initial target region to the rest of the globe. In addition, variants of the coupled model will be used to perform experiments examining resolution requirements and coupling strategies for land-atmosphere coupling in a heterogeneous environment.

Gutowski, W.J. Jr.

1993-01-01T23:59:59.000Z

35

ARM - Field Campaign - Cloud LAnd Surface Interaction Campaign (CLASIC)  

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

govCampaignsCloud LAnd Surface Interaction Campaign (CLASIC) govCampaignsCloud LAnd Surface Interaction Campaign (CLASIC) Campaign Links CLASIC Website Related Campaigns CLASIC - SAM Support 2007.06.09, DeVore, SGP CLASIC - 9.4 GHz Phase Array Radar 2007.06.08, Kollias, SGP CLASIC - Southern Great Plains Aerosol Evolution Study (SGPAES) 2007.06.08, Collins, SGP CLASIC - Land Surface 2007.06.01, Jackson, SGP CLASIC - Radiosonde Campaign 2007.06.01, Orr, SGP CLASIC - SGP Particle Phase Experiment 2007.06.01, Martin, SGP CLASIC - Land-Cloud Coupled Data Assimilation System 2007.06.01, Jackson, SGP Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign : Cloud LAnd Surface Interaction Campaign (CLASIC) 2007.06.01 - 2007.06.30 Website : http://acrf-campaign.arm.gov/clasic/ Lead Scientist : Mark Miller

36

Global and Local Effect of Increasing Land Surface Albedo as...  

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

Global and Local Effect of Increasing Land Surface Albedo as a Geo-Engineering AdaptationMitigation Option: A Case Study of Mediterranean Greenhouse Farming Speaker(s): Pablo...

37

Calculation of the Energy Budget for Heterogeneous Land Surfaces  

Science Conference Proceedings (OSTI)

In this paper a scheme is presented for calculating the land surface energy budget based on the first law of thermodynamics. It takes into account the effects of water multiphase changes and hydrologic process. The enthalpy expression for a ...

Zhengqiu Zhang; Xiuji Zhou; Weiliang Li; Michael Sparrow

2003-01-01T23:59:59.000Z

38

A Comparative Analysis of Two Land Surface Heterogeneity Representations  

Science Conference Proceedings (OSTI)

Two contrasting representations of land surface variability used in general circulation models (GCMS) are compared through an analysis of their corresponding surface energy balance equations. In one representation (the “mixture” approach), ...

Randal D. Koster; Max J. Suarez

1992-12-01T23:59:59.000Z

39

The Influence of Land Surface Moisture Retention on Precipitation Statistics  

Science Conference Proceedings (OSTI)

The retention of precipitation water in land surface reservoirs damps higher frequencies of evaporation variability and can thereby influence the feedback of evaporation on precipitation. The extent of this influence is examined in a series of ...

Randal D. Koster; Max J. Suarez

1996-10-01T23:59:59.000Z

40

Toward an Operational Land Surface Temperature Algorithm for GOES  

Science Conference Proceedings (OSTI)

For most land surface temperature (LST) regression algorithms, a set of optimized coefficients is determined by manual separation of the different sub-divisions of atmospheric and surface conditions. In this study, we introduce a machine learning ...

Donglian Sun; Yunyue Yu; Li Fang; Yuling Liu

Note: This page contains sample records for the topic "land-surface climatology project" 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

Incorporating Anthropogenic Water Regulation Modules into a Land Surface Model  

Science Conference Proceedings (OSTI)

Anthropogenic activities have been significantly perturbing global freshwater flows and groundwater reserves. Despite numerous advances in the development of land surface models (LSMs) and global terrestrial hydrological models (GHMs), relatively ...

Yadu Pokhrel; Naota Hanasaki; Sujan Koirala; Jaeil Cho; Pat J.-F. Yeh; Hyungjun Kim; Shinjiro Kanae; Taikan Oki

2012-02-01T23:59:59.000Z

42

Role of land surface processes in South American monsoon development  

E-Print Network (OSTI)

T. Yasunari, 1998: Monsoons: Processes, pre- dictability,land surface processes in monsoon de- velopment: East AsiaK. -M. Lau, 1998: Does a monsoon climate exist over South

Xue, Y; de Sales, F; Li, W P; Mechoso, C R; Nobre, C A; Juang, H M

2006-01-01T23:59:59.000Z

43

Toward an Operational Land Surface Temperature Algorithm for GOES  

Science Conference Proceedings (OSTI)

For most land surface temperature (LST) regression algorithms, a set of optimized coefficients is determined by manual separation of the different subdivisions of atmospheric and surface conditions. In this study, a machine-learning technique, the ...

Donglian Sun; Yunyue Yu; Li Fang; Yuling Liu

2013-09-01T23:59:59.000Z

44

Development of a Land Surface Model. Part II: Data Assimilation  

Science Conference Proceedings (OSTI)

Part I described a land surface model, its implementation in the fifth-generation Pennsylvania State University–National Center for Atmospheric Research Mesoscale Model (MM5), and some model evaluation results. Part II describes the indirect soil ...

Jonathan E. Pleim; Aijun Xiu

2003-12-01T23:59:59.000Z

45

The Probability Distribution of Land Surface Wind Speeds  

Science Conference Proceedings (OSTI)

The probability density function (pdf) of land surface wind speeds is characterized using a global network of observations. Daytime surface wind speeds are shown to be broadly consistent with the Weibull distribution, while nighttime surface wind ...

Adam H. Monahan; Yanping He; Norman McFarlane; Aiguo Dai

2011-08-01T23:59:59.000Z

46

A Simple Parameterization of Land Surface Processes for Meteorological Models  

Science Conference Proceedings (OSTI)

A parameterization of land surface processes to be included in mesoscale and large-scale meteorological models is presented. The number of parameters has been reduced as much as possible, while attempting to preserve the representation of the ...

J. Noilhan; S. Planton

1989-03-01T23:59:59.000Z

47

Land Surface Energy and Moisture Fluxes: Comparing Three Models  

Science Conference Proceedings (OSTI)

Three different land surface schemes that are designed for use in atmospheric general circulation models are compared. They were run in offline mode with identical atmospheric forcing values that were observed at Cabauw. This procedure allows one ...

J-P. Schulz; L. Dümenil; J. Polcher; C. A. Schlosser; Y. Xue

1998-03-01T23:59:59.000Z

48

Impacts of a Parameterization Deficiency on Offline and Coupled Land Surface Model Simulations  

Science Conference Proceedings (OSTI)

Surface water and energy balance plays an important role in land surface models, especially in coupled land surface–atmospheric models due to the complicated interactions between land surfaces and the overlying atmosphere. The primary purpose of ...

Yuqiong Liu; Luis A. Bastidas; Hoshin V. Gupta; Soroosh Sorooshian

2003-10-01T23:59:59.000Z

49

Stable water isotope simulation by current land-surface schemes:Results of IPILPS phase 1  

DOE Green Energy (OSTI)

Phase 1 of isotopes in the Project for Intercomparison of Land-surface Parameterization Schemes (iPILPS) compares the simulation of two stable water isotopologues ({sup 1}H{sub 2} {sup 18}O and {sup 1}H{sup 2}H{sup 16}O) at the land-atmosphere interface. The simulations are off-line, with forcing from an isotopically enabled regional model for three locations selected to offer contrasting climates and ecotypes: an evergreen tropical forest, a sclerophyll eucalypt forest and a mixed deciduous wood. Here we report on the experimental framework, the quality control undertaken on the simulation results and the method of intercomparisons employed. The small number of available isotopically-enabled land-surface schemes (ILSSs) limits the drawing of strong conclusions but, despite this, there is shown to be benefit in undertaking this type of isotopic intercomparison. Although validation of isotopic simulations at the land surface must await more, and much more complete, observational campaigns, we find that the empirically-based Craig-Gordon parameterization (of isotopic fractionation during evaporation) gives adequately realistic isotopic simulations when incorporated in a wide range of land-surface codes. By introducing two new tools for understanding isotopic variability from the land surface, the Isotope Transfer Function and the iPILPS plot, we show that different hydrological parameterizations cause very different isotopic responses. We show that ILSS-simulated isotopic equilibrium is independent of the total water and energy budget (with respect to both equilibration time and state), but interestingly the partitioning of available energy and water is a function of the models' complexity.

Henderson-Sellers, A.; Fischer, M.; Aleinov, I.; McGuffie, K.; Riley, W.J.; Schmidt, G.A.; Sturm, K.; Yoshimura, K.; Irannejad, P.

2005-10-31T23:59:59.000Z

50

Evaluation of AMIP II Global Climate Model Simulations of the Land Surface Water Budget and Its Components over the GEWEX-CEOP Regions  

Science Conference Proceedings (OSTI)

The land surface water balance components simulated by 20 atmospheric global circulation models (AGCMs) participating in phase II of the Atmospheric Model Intercomparison Project (AMIP II) are analyzed globally and over seven Global Energy and ...

P. Irannejad; A. Henderson-Sellers

2007-06-01T23:59:59.000Z

51

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

Science Conference Proceedings (OSTI)

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

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

2009-10-01T23:59:59.000Z

52

SGP Cloud and Land Surface Interaction Campaign (CLASIC)  

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

3 3 SGP Cloud and Land Surface Interaction Campaign (CLASIC): Science and Implementation Plan June 2007 Mark A. Miller, Principal Investigator and The CLASIC Steering Committee: Roni Avissar, Larry Berg, Sylvia Edgerton, Marc Fischer, Tom Jackson, Bill Kustas, Pete Lamb, Greg McFarquhar, Qilong Min, Beat Schmid, Margaret Torn, and Dave Turner Work supported by the U.S. Department of Energy, Office of Science, Office of Biological and Environmental Research M.R. Miller et al., DOE/SC-ARM-0703 Executive Summary The Cloud and Land Surface Interaction Campaign is a field experiment designed to collect a comprehensive data set that can be used to quantify the interactions that occur between the atmosphere, biosphere, land surface, and subsurface. A particular focus will be on how these

53

Development of High Resolution Land Surface Parameters for the Community Land Model  

SciTech Connect

There is a growing need for high-resolution land surface parameters as land surface models are being applied at increasingly higher spatial resolution offline as well as in regional and global models. The default land surface parameters for the most recent version of the Community Land Model (i.e. CLM 4.0) are at 0.5° or coarser resolutions, released with the Community Earth System Model (CESM). Plant Functional Types (PFTs), vegetation properties such as Leaf Area Index (LAI), Stem Area Index (SAI), and non-vegetated land covers were developed using remotely sensed datasets retrieved in late 1990’s and the beginning of this century. In this study, we developed new land surface parameters for CLM 4.0, specifically PFTs, LAI, SAI and non-vegetated land cover composition, at 0.05° resolution globally based on the most recent MODIS land cover and improved MODIS LAI products. Compared to the current CLM 4.0 parameters, the new parameters produced a decreased coverage by bare soil and trees, but an increased coverage by shrub, grass, and cropland. The new parameters result in a decrease in global seasonal LAI, with the biggest decrease in boreal forests; however, the new parameters also show a large increase in LAI in tropical forest. Differences between the new and the current parameters are mainly caused by changes in the sources of remotely sensed data and the representation of land cover in the source data. Advantages and disadvantages of each dataset were discussed in order to provide guidance on the use of the data. The new high-resolution land surface parameters have been used in a coupled land-atmosphere model (WRF-CLM) applied to the western U.S. to demonstrate their use in high-resolution modeling. A remapping method from the latitude/longitude grid of the CLM data to the WRF grids with map projection was also demonstrated. Future work will include global offline CLM simulations to examine the impacts of source data resolution and subsequent land parameter changes on simulated land surface processes.

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

2012-11-06T23:59:59.000Z

54

The AMMA Land Surface Model Intercomparison Project (ALMIP)  

Science Conference Proceedings (OSTI)

The rainfall over West Africa has been characterized by extreme variability in the last half-century, with prolonged droughts resulting in humanitarian crises. There is, therefore, an urgent need to better understand and predict the West African ...

Aaron Boone; Bertrand Decharme; Françoise Guichard; Patricia de Rosnay; Gianpaolo Balsamo; Anton Beljaars; Franck Chopin; Tristan Orgeval; Jan Polcher; Christine Delire; Agnes Ducharne; Simon Gascoin; Manuela Grippa; Lionel Jarlan; Laurent Kergoat; Eric Mougin; Yeugeniy Gusev; Olga Nasonova; Phil Harris; Christopher Taylor; Anette Norgaard; Inge Sandholt; Catherine Ottlé; Isabelle Poccard-Leclercq; Stephane Saux-Picart; Yongkang Xue

2009-12-01T23:59:59.000Z

55

High-performance land surface modeling with a Linux cluster  

Science Conference Proceedings (OSTI)

The Land Information System (LIS) was developed at NASA to perform global land surface simulations at a resolution of 1-km or finer in real time. Such unprecedented scales and intensity pose many computational challenges. In this article, we demonstrate ... Keywords: Beowulf cluster, Distributed computing, High-resolution simulation, Hydrology modeling, Parallel computing, Peer-to-peer network

Y. Tian; C. D. Peters-Lidard; S. V. Kumar; J. Geiger; P. R. Houser; J. L. Eastman; P. Dirmeyer; B. Doty; J. Adams

2008-11-01T23:59:59.000Z

56

Intercomparison of Soil Moisture Memory in Two Land Surface Models  

Science Conference Proceedings (OSTI)

A heavy rain or a dry period can produce an anomaly in soil moisture, and the dissipation of this anomaly may take weeks to months. It is important to understand how land surface models (LSMs) used with atmospheric general circulation models ...

Sarith P. P. Mahanama; Randal D. Koster

2003-12-01T23:59:59.000Z

57

Sensitivity of Tropical Convection to Land Surface Processes  

Science Conference Proceedings (OSTI)

This paper studies the sensitivity of large-scale tropical convection to land surface changes in the general circulation model of the LMD. Ale method of analysis is based on a conceptual model of the energetics of convection applied every day of ...

J. Polcher

1995-09-01T23:59:59.000Z

58

Land surface conditions over Eurasia and Indian summer monsoon rainfall  

E-Print Network (OSTI)

Land surface conditions over Eurasia and Indian summer monsoon rainfall Alan Robock and Mingquan Mu, surface air temperature, atmospheric circulation, and Indian summer monsoon precipitation from 1870 to 2000, we examine the relationship between interannual variations of the strength of the monsoon

Robock, Alan

59

Cabauw Data for the Validation of Land Surface Parameterization Schemes  

Science Conference Proceedings (OSTI)

This paper describes and interprets the 1987 data from Cabauw, the Netherlands, which can be used to test land surface schemes in stand-alone mode. The data are available from the authors for model development and research. It consists of half-...

Anton C. M. Beljaars; Fred C. Bosveld

1997-06-01T23:59:59.000Z

60

On the Nature of Soil Moisture in Land Surface Models  

Science Conference Proceedings (OSTI)

The soil moisture state simulated by a land surface model is a highly model-dependent quantity, meaning that the direct transfer of one model’s soil moisture into another can lead to a fundamental, and potentially detrimental, inconsistency. This ...

Randal D. Koster; Zhichang Guo; Rongqian Yang; Paul A. Dirmeyer; Kenneth Mitchell; Michael J. Puma

2009-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "land-surface climatology project" 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

Continuous Monitoring of Nearest Neighbors on Land Surface Songhua Xing  

E-Print Network (OSTI)

As geo-realistic rendering of land surfaces is becoming commonplace in geographical information systems- tree suffers from intrinsic defects: it is fat and short, and hence does not improve the query, a realistic, accurate and detailed rendering of Earth surfaces is becoming feasible in many applications

Shahabi, Cyrus

62

SGP Cloud and Land Surface Interaction Campaign (CLASIC): Measurement Platforms  

SciTech Connect

The Cloud and Land Surface Interaction Campaign (CLASIC) will be conducted from June 8 to June 30, 2007, at the U.S. Department of Energy’s Atmospheric Radiation Measurement (ARM) Climate Research Facility (ACRF) Southern Great Plains (SGP) site. Data will be collected using eight aircraft equipped with a variety of specialized sensors, four specially instrumented surface sites, and two prototype surface radar systems. The architecture of CLASIC includes a high-altitude surveillance aircraft and enhanced vertical thermodynamic and wind profile measurements that will characterize the synoptic scale structure of the clouds and the land surface within the ACRF SGP site. Mesoscale and microscale structures will be sampled with a variety of aircraft, surface, and radar observations. An overview of the measurement platforms that will be used during the CLASIC are described in this report. The coordination of measurements, especially as it relates to aircraft flight plans, will be discussed in the CLASIC Implementation Plan.

MA Miller; R Avissar; LK Berg; SA Edgerton; ML Fischer; TJ Jackson; B. Kustas; PJ Lamb; G McFarquhar; Q Min; B Schmid; MS Torn; DD Tuner

2007-06-01T23:59:59.000Z

63

Tornado Climatology of Finland  

Science Conference Proceedings (OSTI)

A tornado climatology for Finland is constructed from 1796 to 2007. The climatology consists of two datasets. A historical dataset (1796–1996) is largely constructed from newspaper archives and other historical archives and datasets, and a recent ...

Jenni Rauhala; Harold E. Brooks; David M. Schultz

2012-05-01T23:59:59.000Z

64

Verification and Intercomparison of Multimodel Simulated Land Surface Hydrological Datasets over the United States  

Science Conference Proceedings (OSTI)

Several land surface datasets, such as the observed Illinois soil moisture dataset; three retrospective offline run datasets from the Noah land surface model (LSM), Variable Infiltration Capacity (VIC) LSM, and Climate Prediction Center leaky ...

Yun Fan; Huug M. van den Dool; Wanru Wu

2011-08-01T23:59:59.000Z

65

An Observational Analysis and Evaluation of Land Surface Model Accuracy in the Nebraska Sand Hills  

Science Conference Proceedings (OSTI)

In this study, the influence of subsurface water on the energy budget components of three locations with heterogeneous land surfaces in the Nebraska Sand Hills are examined through observations and use of the Noah land surface model (LSM). ...

David B. Radell; Clinton M. Rowe

2008-08-01T23:59:59.000Z

66

Northern Annular Mode Effects on the Land Surface Phenologies of Northern Eurasia  

Science Conference Proceedings (OSTI)

Land surface phenology (LSP) is the spatiotemporal development of the vegetated land surface as revealed by synoptic sensors. Modeling LSP across northern Eurasia reveals the magnitude, significance, and spatial pattern of the influence of the ...

K. M. de Beurs; G. M. Henebry

2008-09-01T23:59:59.000Z

67

The Effect of Soil and Vegetation Parameters in the ECMWF Land Surface Scheme  

Science Conference Proceedings (OSTI)

Numerical Weather Prediction (NWP) and climate models are sensitive to evapotranspiration at the land surface. This sensitivity requires the prediction of realistic surface moisture and heat fluxes by land surface models that provide the lower ...

H. Richter; A. W. Western; F. H. S. Chiew

2004-12-01T23:59:59.000Z

68

Realistic Initialization of Land Surface States: Impacts on Subseasonal Forecast Skill  

Science Conference Proceedings (OSTI)

Forcing a land surface model (LSM) offline with realistic global fields of precipitation, radiation, and near-surface meteorology produces realistic fields (within the context of the LSM) of soil moisture, temperature, and other land surface ...

Randal D. Koster; Max J. Suarez; Ping Liu; Urszula Jambor; Aaron Berg; Michael Kistler; Rolf Reichle; Matthew Rodell; Jay Famiglietti

2004-12-01T23:59:59.000Z

69

Limited-Area Model Sensitivity to the Complexity of Representation of the Land Surface Energy Balance  

Science Conference Proceedings (OSTI)

By coupling a multimode land surface scheme with a regional climate model, three scientific issues are addressed in this paper: (i) the regional model's sensitivity to the different levels of complexity presented by the land surface ...

H. Zhang; A. Henderson-Sellers; A. J. Pitman; C. E. Desborough; J. L. McGregor; J. J. Katzfey

2001-10-01T23:59:59.000Z

70

Simulation of Global Land Surface Conditions from 1948 to 2004. Part I: Forcing Data and Evaluations  

Science Conference Proceedings (OSTI)

Because of a lack of observations, historical simulations of land surface conditions using land surface models are needed for studying variability and changes in the continental water cycle and for providing initial conditions for seasonal ...

Taotao Qian; Aiguo Dai; Kevin E. Trenberth; Keith W. Oleson

2006-10-01T23:59:59.000Z

71

Relative Humidity as an Indicator for Cloud Formation over Heterogeneous Land Surfaces  

Science Conference Proceedings (OSTI)

The influence of land surface heterogeneity on potential cloud formation is investigated using relative humidity as an indicator. This is done by performing numerical experiments using a large-eddy simulation model (LES). The land surface in the ...

Chiel C. van Heerwaarden; Jordi Vilà Guerau de Arellano

2008-10-01T23:59:59.000Z

72

Development of a Coupled Land Surface Hydrologic Model and Evaluation at a Critical Zone Observatory  

Science Conference Proceedings (OSTI)

A fully-coupled land surface hydrologic model, Flux-PIHM, is developed by incorporating a land-surface scheme into the Penn State Integrated Hydrologic Model (PIHM). The land-surface scheme is adapted from the Noah LSM. Because PIHM is capable of ...

Yuning Shi; Kenneth J. Davis; Christopher J. Duffy; Xuan Yu

73

Polar Cloud Climatologies from ISCCP C2 and D2 Datasets  

Science Conference Proceedings (OSTI)

A deterministic radiative transfer model along with data from the International Satellite Cloud Climatology Project (ISCCP) and the Earth Radiation Budget Experiment (ERBE) were used to examine long-term mean monthly cloud climatologies for the ...

N. Hatzianastassiou; N. Cleridou; I. Vardavas

2001-09-01T23:59:59.000Z

74

Land information system: An interoperable framework for high resolution land surface modeling  

E-Print Network (OSTI)

surface states and fluxes. LIS employs the use of scalable, high performance computing and data management. All rights reserved. Keywords: Land surface modeling; High performance computing; Object

Houser, Paul R.

75

Land surface cleanup of plutonium at the Nevada Test Site  

SciTech Connect

The Nevada Test Site (NTS) covers approximately 3300 km{sup 2} of high desert and is located approximately 100 km northwest of Las Vegas, Nevada. Soil contaminated by plutonium exists on the NTS and surrounding areas from safety tests conducted in the 1950s and 1960s. About 150 curies of contamination have been measured over 1200 hectares of land surface. Most contamination is found in the top 5 cm of soil but may be found deep as 25 cm. The cost of conventional removal and disposal of the full soil volume has been estimated at over $500,000,000. This study is directed toward minimizing the volume of waste which must be further processed and disposed of by precisely controlling soil removal depth. The following soil removal machines were demonstrated at the NTS: (1) a CMI Corporation Model PR-500FL pavement profiler, (2) a CMI Corporation Model Tr-225B trimmer reclaimer, (3) a Caterpillar Model 623 elevating scraper equipped with laser depth control, (4) a Caterpillar Model 14G motor grader equipped with laser depth control, (5) a Caterpillar Model 637 auger scraper, and (6) a XCR Series Guzzler vacuum truck. 5 refs., 5 figs.

Ebeling, L.L.; Evans, R.B.; Walsh, E.J.

1991-01-01T23:59:59.000Z

76

A Spectral Climatology  

Science Conference Proceedings (OSTI)

Using 5 years of daily initialized height fields from the National Meteorological Center, expressed as coefficients of spherical harmonies, a climatology of the annual cycle has been formulated for the 1000, 700, 500 and 250 mb surfaces. The ...

Edward S. Epstein

1988-01-01T23:59:59.000Z

77

Possible relation between land surface feedback and the post-landfall structure of monsoon depressions  

E-Print Network (OSTI)

Possible relation between land surface feedback and the post-landfall structure of monsoon; published 14 August 2009. [1] The effect of pre-storm land surface on the monsoon depressions (MDs (weaken) the landfalling MDs over the Indian monsoon region. Citation: Chang, H.-I., D. Niyogi, A. Kumar

Niyogi, Dev

78

Variational Estimation of Land–Atmosphere Heat Fluxes and Land Surface Parameters Using MODIS Remote Sensing Data  

Science Conference Proceedings (OSTI)

A variational data assimilation algorithm for assimilating the land surface temperature (LST) into the Common Land Model (CLM) was implemented using the land surface energy balance equation as the adjoint physical constraint. In this data ...

Chunlei Meng; Chaolin Zhang; Ronglin Tang

2013-04-01T23:59:59.000Z

79

Improving the Noah Land Surface Model in Arid Regions with an Appropriate Parameterization of the Thermal Roughness Length  

Science Conference Proceedings (OSTI)

Daytime land surface temperatures in arid and semiarid regions are typically not well simulated in current land surface models (LSMs). This study first evaluates the importance of parameterizing the thermal roughness length (z0h) to model the ...

Yingying Chen; Kun Yang; Degang Zhou; Jun Qin; Xiaofeng Guo

2010-08-01T23:59:59.000Z

80

Temporal Variations of Land Surface Microwave Emissivities over the Atmospheric Radiation Measurement Program Southern Great Plains Site  

Science Conference Proceedings (OSTI)

Land surface microwave emissivities are important geophysical parameters for atmospheric, hydrological, and biospheric studies. This study estimates land surface microwave emissivity using an atmospheric microwave radiative transfer model and a ...

Bing Lin; Patrick Minnis

2000-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "land-surface climatology project" 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

The Land Surface Scheme ISBA within the Météo-France Climate Model ARPEGE. Part I. Implementation and Preliminary Results  

Science Conference Proceedings (OSTI)

This paper describes recent developments in climate modeling at Météo-France related to land surface processes. The implementation of a simple land surface parameterization, Interactions between Soil Biosphere Atmosphere (ISBA), has gained from ...

J-F. Mahfouf; A. O. Manzi; J. Noilhan; H. Giordani; M. DéQué

1995-08-01T23:59:59.000Z

82

A Study of Convection Initiation in a Mesoscale Model Using High-Resolution Land Surface Initial Conditions  

Science Conference Proceedings (OSTI)

A coupled convection-resolving mesoscale atmosphere–land surface model (LSM) is used to investigate land surface–planetary boundary layer (PBL) interactions responsible for the initiation of deep, moist convection over the southern Great Plains ...

Stanley B. Trier; Fei Chen; Kevin W. Manning

2004-12-01T23:59:59.000Z

83

Influence of Land Surface Roughness on Atmospheric Circulation and Precipitation: A Sensitivity Study with a General Circulation Model  

Science Conference Proceedings (OSTI)

The influence of land surface roughness on the large scale atmospheric circulation and rainfall was examined by comparing three sets of simulations made with a general circulation model in which the land surface roughness length, z0, was reduced ...

Y. C. Sud; J. Shukla; Y. Mintz

1988-09-01T23:59:59.000Z

84

The Anomalous Rainfall over the United States during July 1993: Sensitivity to Land Surface Parameterization and Soil Moisture Anomalies  

Science Conference Proceedings (OSTI)

This paper discusses the sensitivity of short- and medium-range precipitation forecasts for the central United States to land surface parametrization and soil moisture anomalies. Two forecast systems with different land surface and boundary layer ...

Anton C. M. Beljaars; Pedro Viterbo; Martin J. Miller; Alan K. Betts

1996-03-01T23:59:59.000Z

85

A Comparison of the Noah and OSU Land Surface Models in the ECPC Seasonal Forecast Model  

Science Conference Proceedings (OSTI)

The Noah land surface model (LSM) has recently been implemented into the Experimental Climate Prediction Center’s (ECPC’s) global Seasonal Forecast Model (SFM). Its performance is compared to the older ECPC SFM with the Oregon State University (...

Laurel L. De Haan; Masao Kanamitsu; Cheng-Hsuan Lu; John O. Roads

2007-10-01T23:59:59.000Z

86

Evaluation of Two Land Surface Schemes Used in Terrains of Increasing Aridity in West Africa  

Science Conference Proceedings (OSTI)

In this study different parameterizations for land surface models currently employed in meteorological models at ECMWF [Tiled ECMWF Surface Scheme for Exchange Processes over Land (TESSEL)] and NCEP (Noah) are evaluated for a semiarid region in ...

D. Schüttemeyer; A. F. Moene; A. A. M. Holtslag; H. A. R. de Bruin

2008-04-01T23:59:59.000Z

87

Assimilation of Satellite-Observed Snow Albedo in a Land Surface Model  

Science Conference Proceedings (OSTI)

This study assesses the impact of assimilating satellite-observed snow albedo on the Noah land surface model (LSM)-simulated fluxes and snow properties. A direct insertion technique is developed to assimilate snow albedo into Noah and is applied ...

M. Jahanzeb Malik; Rogier van der Velde; Zoltan Vekerdy; Zhongbo Su

2012-06-01T23:59:59.000Z

88

Diurnal to Annual Precipitation Sensitivity to Convective and Land Surface Schemes  

Science Conference Proceedings (OSTI)

Precipitation’s diurnal to annual variance distribution and atmospheric water cycle component interactions are examined globally for sensitivity to convective and land surface schemes. The main regional features of statistics identified in ...

Alex C. Ruane; John O. Roads

2008-06-01T23:59:59.000Z

89

Evaluation and Transferability of the Noah Land Surface Model in Semiarid Environments  

Science Conference Proceedings (OSTI)

This paper investigates the performance of the National Centers for Environmental Prediction (NCEP) Noah land surface model at two semiarid sites in southern Arizona. The goal is to evaluate the transferability of calibrated parameters (i.e., ...

Terri S. Hogue; Luis Bastidas; Hoshin Gupta; Soroosh Sorooshian; Ken Mitchell; William Emmerich

2005-02-01T23:59:59.000Z

90

A Conjunctive Surface–Subsurface Flow Representation for Mesoscale Land Surface Models  

Science Conference Proceedings (OSTI)

Most current land surface models used in regional weather and climate studies capture soil-moisture transport in only the vertical direction and are therefore unable to capture the spatial variability of soil moisture and its lateral transport. ...

Hyun Il Choi; Xin-Zhong Liang; Praveen Kumar

2013-10-01T23:59:59.000Z

91

Dependence of Land Surface Albedo on Solar Zenith Angle: Observations and Model Parameterization  

Science Conference Proceedings (OSTI)

This study examines the dependence of surface albedo on solar zenith angle (SZA) over snow-free land surfaces using the intensive observations of surface shortwave fluxes made by the U.S. Department of Energy Atmospheric Radiation Measurement (...

Fanglin Yang; Kenneth Mitchell; Yu-Tai Hou; Yongjiu Dai; Xubin Zeng; Zhuo Wang; Xin-Zhong Liang

2008-11-01T23:59:59.000Z

92

Decadal Covariability of the Northern Wintertime Land Surface Temperature and Atmospheric Circulation  

Science Conference Proceedings (OSTI)

The decadal covariability of northern wintertime land surface temperature and 500-hPa geopotential anomalies is examined using the National Centers for Environmental Prediction–National Center for Atmospheric Research and the Twentieth-Century ...

B. Yu; X. L. Wang; X. B. Zhang; J. Cole; Y. Feng

2014-01-01T23:59:59.000Z

93

Evaluation of Satellite Estimates of Land Surface Temperature from GOES over the United States  

Science Conference Proceedings (OSTI)

A comprehensive evaluation of split-window and triple-window algorithms to estimate land surface temperature (LST) from Geostationary Operational Environmental Satellites (GOES) that were previously described by Sun and Pinker is presented. The ...

Rachel T. Pinker; Donglian Sun; Meng-Pai Hung; Chuan Li; Jeffrey B. Basara

2009-01-01T23:59:59.000Z

94

Hydrological Land Surface Response in a Tropical Regime and a Midlatitudinal Regime  

Science Conference Proceedings (OSTI)

A statistical–dynamical study was performed on the role of hydrometeorological interactions in the midlatitudes and the semiarid Tropics. For this, observations from two field experiments, the First International Satellite Land Surface ...

Devdutta S. Niyogi; Yongkang Xue; Sethu Raman

2002-02-01T23:59:59.000Z

95

Assessing the Performance of the Ensemble Kalman Filter for Land Surface Data Assimilation  

Science Conference Proceedings (OSTI)

The ensemble Kalman filter provides an easy-to-use, flexible, and efficient option for data assimilation problems. One of its attractive features in land surface applications is its ability to provide distributional information about variables, ...

Yuhua Zhou; Dennis McLaughlin; Dara Entekhabi

2006-08-01T23:59:59.000Z

96

Computational Issues for Large-Scale Land Surface Data Assimilation Problems  

Science Conference Proceedings (OSTI)

Land surface data assimilation problems are often limited by the high dimensionality of states created by spatial discretization over large high-resolution computational grids. Yet field observations and simulation both confirm that soil moisture ...

Dennis McLaughlin; Yuhua Zhou; Dara Entekhabi; Virat Chatdarong

2006-06-01T23:59:59.000Z

97

A Stochastic Linear Theory of Mesoscale Circulation Induced by the Thermal Heterogeneity of the Land Surface  

Science Conference Proceedings (OSTI)

This paper presents a three-dimensional stochastic linear model of the mesoscale circulation induced by the variability of turbulent sensible heat flux over land surface. The primitive equations relating wind field, geo-potential, and potential ...

Jingfeng Wang; Rafael L. Bars; Elfatih A. B. Eltahir

1996-11-01T23:59:59.000Z

98

Performance Assessment of New Land Surface and Planetary Boundary Layer Physics in the WRF-ARW  

Science Conference Proceedings (OSTI)

The Pleim–Xiu land surface model, Pleim surface layer scheme, and Asymmetric Convective Model (version 2) are now options in version 3.0 of the Weather Research and Forecasting model (WRF) Advanced Research WRF (ARW) core. These physics ...

Robert C. Gilliam; Jonathan E. Pleim

2010-04-01T23:59:59.000Z

99

Using the Special Sensor Microwave/Imager to Monitor Land Surface Temperatures, Wetness, and Snow Cover  

Science Conference Proceedings (OSTI)

The worldwide network of in situ land surface temperatures archived in near-real time at the National Climatic Data Center (NCDC) has limited applications, since many areas are poorly represented or provide no observations. Satellite measurements ...

Alan Basist; Norman C. Grody; Thomas C. Peterson; Claude N. Williams

1998-09-01T23:59:59.000Z

100

Convective Planetary Boundary Layer Interactions with the Land Surface at Diurnal Time Scales: Diagnostics and Feedbacks  

Science Conference Proceedings (OSTI)

The convective planetary boundary layer (PBL) integrates surface fluxes and conditions over regional and diurnal scales. As a result, the structure and evolution of the PBL contains information directly related to land surface states. To examine ...

Joseph A. Santanello Jr.; Mark A. Friedl; Michael B. Ek

2007-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "land-surface climatology project" 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

A Revised Land Surface Parameterization (SiB2) for Atmospheric GCMS. Part I: Model Formulation  

Science Conference Proceedings (OSTI)

The formulation of a revised land surface parameterization for use within atmospheric general circulation models (GCMs) is presented. The model (SiB2) incorporates several significant improvements over the first version of the Simple Biosphere ...

P.J. Sellers; D.A. Randall; G.J. Collatz; J.A. Berry; C.B. Field; D.A. Dazlich; C. Zhang; G.D. Collelo; L. Bounoua

1996-04-01T23:59:59.000Z

102

A Conjunctive Surface-Subsurface Flow Representation for Mesoscale Land Surface Models  

Science Conference Proceedings (OSTI)

Most current land surface models used in regional weather and climate studies capture soil-moisture transport in only the vertical direction and are therefore unable to capture the spatial variability of soil-moisture and its lateral transport. ...

Hyun Il Choi; Xin–Zhong Liang; Praveen Kumar

103

An Improved Snow Scheme for the ECMWF Land Surface Model: Description and Offline Validation  

Science Conference Proceedings (OSTI)

A new snow scheme for the European Centre for Medium-Range Weather Forecasts (ECMWF) land surface model has been tested and validated. The scheme includes a new parameterization of snow density, incorporating a liquid water reservoir, and revised ...

Emanuel Dutra; Gianpaolo Balsamo; Pedro Viterbo; Pedro M. A. Miranda; Anton Beljaars; Christoph Schär; Kelly Elder

2010-08-01T23:59:59.000Z

104

Modeling Land Surface Processes and Heavy Rainfall in Urban Environments: Sensitivity to Urban Surface Representations  

Science Conference Proceedings (OSTI)

High-resolution simulations with the Weather Research and Forecasting (WRF) model are used in conjunction with observational analyses to investigate land surface processes and heavy rainfall over the Baltimore-Washington metropolitan area. ...

Dan Li; Elie Bou-Zeid; Mary Lynn Baeck; Stephen Jessup; James A. Smith

105

Explicit Representation of Subgrid Heterogeneity in a GCM Land Surface Scheme  

Science Conference Proceedings (OSTI)

A land surface scheme that may be run with or without a tiled representation of subgrid heterogeneity and includes an implicit atmospheric coupling scheme is described. Simulated average surface air temperatures and diurnal temperature ranges in ...

R. L. H. Essery; M. J. Best; R. A. Betts; P. M. Cox; C. M. Taylor

2003-06-01T23:59:59.000Z

106

Effects of Land Surface–Vegetation on the Boreal Summer Surface Climate of a GCM  

Science Conference Proceedings (OSTI)

A land surface model (LSM) has been included in the ECMWF Hamburg version 4 (ECHAM4) atmospheric general circulation model (AGCM). The LSM is an early version of the Organizing Carbon and Hydrology in Dynamic Ecosystems (ORCHIDEE) and it replaces ...

Andrea Alessandri; Silvio Gualdi; Jan Polcher; Antonio Navarra

2007-01-01T23:59:59.000Z

107

Sensitivity of Global Tropical Climate to Land Surface Processes: Mean State and Interannual Variability  

Science Conference Proceedings (OSTI)

This study examines the sensitivity of the global 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 ...

Hsi-Yen Ma; Heng Xiao; C. Roberto Mechoso; Yongkang Xue

2013-03-01T23:59:59.000Z

108

Assessment of Roughness Length Schemes Implemented within the Noah Land Surface Model for High Altitude Regions  

Science Conference Proceedings (OSTI)

Current land surface models still have difficulties with producing reliable surface heat fluxes and skin temperature (Tsfc) estimates for high altitude regions, which may be addressed via adequate parameterization of the roughness lengths for ...

Donghai Zheng; Rogier Van Der Velde; Zhongbo Su; Martijn J. Booij; Arjen Y. Hoekstra

109

Global Interannual Variations in Sea Surface Temperature and Land Surface Vegetation, Air Temperature, and Precipitation  

Science Conference Proceedings (OSTI)

Anomalies in global vegetation greenness, SST, land surface air temperature, and precipitation exhibit linked, low-frequency interannual variations. These interannual variations were detected and analyzed for 1982–90 with a multivariate spectral ...

Sietse O. Los; G. James Collatz; Lahouari Bounoua; Piers J. Sellers; Compton J. Tucker

2001-04-01T23:59:59.000Z

110

Use of NDVI and Land Surface Temperature for Drought Assessment: Merits and Limitations  

Science Conference Proceedings (OSTI)

A large number of water- and climate-related applications, such as drought monitoring, are based on spaceborne-derived relationships between land surface temperature (LST) and the normalized difference vegetation index (NDVI). The majority of ...

Arnon Karnieli; Nurit Agam; Rachel T. Pinker; Martha Anderson; Marc L. Imhoff; Garik G. Gutman; Natalya Panov; Alexander Goldberg

2010-02-01T23:59:59.000Z

111

Retrieval of Land Surface Albedo from Satellite Observations: A Simulation Study  

Science Conference Proceedings (OSTI)

Land surface albedo is a critical parameter affecting the earth’s climate and is required by global and regional climatic modeling and surface energy balance monitoring. Surface albedo retrieved from satellite observations at one atmospheric ...

Shunlin Liang; Alan H. Strahler; Charles Walthall

1999-06-01T23:59:59.000Z

112

Estimation of Land Surface Temperature over the Tibetan Plateau Using GMS Data  

Science Conference Proceedings (OSTI)

Geostationary Meteorological Satellite Visible/Infrared Spin-Scan Radiometer (GMS VISSR) images have been used to estimate diurnal variations of land surface temperature distributions over the Tibetan Plateau. The infrared split-window algorithm ...

Yuichiro Oku; Hirohiko Ishikawa

2004-04-01T23:59:59.000Z

113

Influence of “Realistic” Land Surface Wetness on Predictability of Seasonal Precipitation in Boreal Summer  

Science Conference Proceedings (OSTI)

Outputs from two ensembles of atmospheric model simulations for 1951–98 define the influence of “realistic” land surface wetness on seasonal precipitation predictability in boreal summer. The ensembles consist of one forced with observed sea ...

Shinjiro Kanae; Yukiko Hirabayashi; Tomohito Yamada; Taikan Oki

2006-04-01T23:59:59.000Z

114

A Factorial Assessment of the Sensitivity of the BATS Land-Surface Parameterization Scheme  

Science Conference Proceedings (OSTI)

Land-surface schemes developed for incorporation into global climate models include parameterizations that are not yet fully validated and depend upon the specification of a large (20–50) number of ecological and soil parameters, the values of ...

A. Henderson-Sellers

1993-02-01T23:59:59.000Z

115

Modeling the Effect of Land Surface Evaporation Variability on Precipitation Variability. Part I: General Response  

Science Conference Proceedings (OSTI)

This is the first of a two-part article that investigates the impact of land surface evaporation variability on the interannual variability of precipitation and compares it with the impact caused by sea surface temperature variability. Previous ...

Oreste Reale; Paul Dirmeyer

2002-08-01T23:59:59.000Z

116

The Land Surface Analysis in the NCEP Climate Forecast System Reanalysis  

Science Conference Proceedings (OSTI)

The NCEP Climate Forecast System Reanalysis (CFSR) uses the NASA Land Information System (LIS) to create its land surface analysis: the NCEP Global Land Data Assimilation System (GLDAS). Comparing to the previous two generations of NCEP global ...

Jesse Meng; Rongqian Yang; Helin Wei; Michael Ek; George Gayno; Pingping Xie; Kenneth Mitchell

2012-10-01T23:59:59.000Z

117

The Predictive Uncertainty of Land Surface Fluxes in Response to Increasing Ambient Carbon Dioxide  

Science Conference Proceedings (OSTI)

The exchange of water vapor and carbon dioxide (CO2) between the land surface and the atmosphere plays an important role in numerical weather forecasting and climate change prediction using general circulation models. In this study, a typical ...

Karsten Schulz; Andrew Jarvis; Keith Beven; Henrik Soegaard

2001-06-01T23:59:59.000Z

118

The Implementation and Validation of Improved Land-Surface Hydrology in an Atmospheric General Circulation Model  

Science Conference Proceedings (OSTI)

New land-surface hydrologic parameterizations are implemented into the NASA Goddard Institute for Space Studies (GISS) General Circulation Model (GCM). These parameterizations are: 1) runoff and evapotranspiration functions that include the ...

Kevin D. Johnson; Dara Entekhabi; Peter S. Eagleson

1993-06-01T23:59:59.000Z

119

Estimation of turbulent surface heat fluxes using sequences of remotely sensed land surface temperature  

E-Print Network (OSTI)

Fluxes of heat and moisture at the land-surface play a significant role in the climate system. These fluxes interact with the overlying atmosphere and influence the characteristics of the planetary boundary layer (e.g. ...

Bateni, Sayed Mohyeddin

2011-01-01T23:59:59.000Z

120

Biogeochemical and Biophysical Responses of the Land Surface to a Sustained Thermohaline Circulation Weakening  

Science Conference Proceedings (OSTI)

Biotic responses to climate change may constitute significant feedbacks to the climate system by altering biogeochemistry (e.g., carbon storage) or biophysics (i.e., albedo, evapotranspiration, and roughness length) at the land surface. Accurate ...

Paul A. T. Higgins

2004-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "land-surface climatology project" 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

The Land Surface Contribution to the Potential Predictability of Boreal Summer Season Climate  

Science Conference Proceedings (OSTI)

The role of the land surface in contributing to the potential predictability of the boreal summer climate is investigated with a coupled land–atmosphere climate model. Ensemble simulations for 1982–99 have been conducted with specified observed ...

Paul A. Dirmeyer

2005-10-01T23:59:59.000Z

122

Sensitivity of a GCM Simulation of Global Climate to the Representation of Land-Surface Hydrology  

Science Conference Proceedings (OSTI)

The sensitivity of global climate to the characterization of the land-surface hydrology is investigated using the Geophysical Fluid Dynamics Laboratory GCM at R15 resolution with the standard Budyko bucket and the Variable Infiltration Capacity (...

John F. Stamm; Eric F. Wood; Dennis P. Lettenmaier

1994-08-01T23:59:59.000Z

123

Updating a Land Surface Model with MODIS-Derived Snow Cover  

Science Conference Proceedings (OSTI)

A simple scheme for updating snow-water storage in a land surface model using snow cover observations is presented. The scheme makes use of snow cover observations retrieved from the Moderate Resolution Imaging Spectroradiometer (MODIS) aboard ...

M. Rodell; P. R. Houser

2004-12-01T23:59:59.000Z

124

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

Science Conference Proceedings (OSTI)

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

R. Avissar; R. A. Pielke

1989-10-01T23:59:59.000Z

125

Multi-sensor large scale land surface data assimilation using ensemble approaches  

E-Print Network (OSTI)

One of the ensemble Kalman filter's (EnKF) attractive features in land surface applications is its ability to provide distributional information. The EnKF relies on normality approximations that improve its efficiency but ...

Zhou, Yuhua, Ph. D. Massachusetts Institute of Technology

2006-01-01T23:59:59.000Z

126

Mesoscale Simulations of the Land Surface Effects of Historical Logging in a Moist Continental Climate Regime  

Science Conference Proceedings (OSTI)

An enhanced knowledge of the feedbacks from land surface changes on regional climates is of great importance in the attribution of climate change. To explore the effects of deforestation on a midlatitude climate regime, two sets of two five-...

Nicholas P. Klingaman; Jason Butke; Daniel J. Leathers; Kevin R. Brinson; Elsa Nickl

2008-08-01T23:59:59.000Z

127

Role of Antecedent Land Surface Conditions on North American Monsoon Rainfall Variability  

Science Conference Proceedings (OSTI)

Possible links between North American Monsoon System (NAMS) seasonal [June–July–August–September (JJAS)] precipitation and premonsoon seasonal land surface conditions including precipitation (P), surface air temperature (Ts), soil moisture (Sm), ...

Chunmei Zhu; Dennis P. Lettenmaier; Tereza Cavazos

2005-08-01T23:59:59.000Z

128

Calibrating a Land Surface Model of Varying Complexity Using Multicriteria Methods and the Cabauw Dataset  

Science Conference Proceedings (OSTI)

The multicriteria methodology, which provides a means to estimate optimal ranges for land surface model parameter values via calibration, is evaluated. Following calibration, differences between schemes resulting from effective parameter values ...

Y. Xia; A. J. Pitman; H. V. Gupta; M. Leplastrier; A. Henderson-Sellers; L. A. Bastidas

2002-04-01T23:59:59.000Z

129

Impacts of Land Surface Model Complexity on a Regional Simulation of a Tropical Synoptic Event  

Science Conference Proceedings (OSTI)

A multimode Chameleon Surface Model (CHASM) with different levels of complexity in parameterizing surface energy balance is coupled to a limited-area model (DARLAM) to investigate the impacts of complexity in land surface representations on the ...

H. Zhang; J. L. McGregor; A. Henderson-Sellers; J. J. Katzfey

2004-02-01T23:59:59.000Z

130

Incorporating Hydraulic Lift into a Land Surface Model and Its Effects on Surface Soil Moisture Prediction  

Science Conference Proceedings (OSTI)

In comparison with the Oklahoma Atmospheric Surface-layer Instrumentation System (OASIS) measurements, the Simulator for Hydrology and Energy Exchange at the Land Surface (SHEELS), a multilayer soil hydrological model, simulates a much faster ...

Diandong Ren; Ming Xue; Ann Henderson-Sellers

2004-12-01T23:59:59.000Z

131

Simultaneous Land Surface Temperature–Emissivity Retrieval in the Infrared Split Window  

Science Conference Proceedings (OSTI)

A combined land surface temperature–emissivity retrieval algorithm is developed and tested for Geostationary Operational Environmental Satellite (GOES)-Imager and National Oceanic and Atmospheric Administration Advanced Very High Resolution ...

David A. Faysash; Eric A. Smith

1999-11-01T23:59:59.000Z

132

Modeling the Impact of Land Surface Degradation on the Climate of Tropical North Africa  

Science Conference Proceedings (OSTI)

Degradation of the land surface has been suggested as a cause of persistent drought in tropical north Africa. A general circulation model is used to assess the impact of degradation of five regions within tropical north Africa. Idealized ...

Douglas B. Clark; Yongkang Xue; Richard J. Harding; Paul J. Valdes

2001-04-01T23:59:59.000Z

133

Development of a Land Surface Model. Part I: Application in a Mesoscale Meteorological Model  

Science Conference Proceedings (OSTI)

Parameterization of land surface processes and consideration of surface inhomogeneities are very important to mesoscale meteorological modeling applications, especially those that provide information for air quality modeling. To provide crucial, ...

Aijun Xiu; Jonathan E. Pleim

2001-02-01T23:59:59.000Z

134

Evaluation of MERRA Land Surface Estimates in Preparation for the Soil Moisture Active Passive Mission  

Science Conference Proceedings (OSTI)

The authors evaluated several land surface variables from the Modern-Era Retrospective Analysis for Research and Applications (MERRA) product that are important for global ecological and hydrological studies, including daily maximum (Tmax) and ...

Yonghong Yi; John S. Kimball; Lucas A. Jones; Rolf H. Reichle; Kyle C. McDonald

2011-08-01T23:59:59.000Z

135

Representation of Water Table Dynamics in a Land Surface Scheme. Part II: Subgrid Variability  

Science Conference Proceedings (OSTI)

A lumped unconfined aquifer model has been developed and interactively coupled to a land surface scheme in a companion paper. Here, the issue of the representation of subgrid variability of water table depths (WTDs) is addressed. A statistical–...

Pat J-F. Yeh; Elfatih A. B. Eltahir

2005-06-01T23:59:59.000Z

136

An Empirical Latent Heat Flux Parameterization for the Noah Land Surface Model  

Science Conference Proceedings (OSTI)

Proper partitioning of the surface energy fluxes that drive the evolution of the planetary boundary layer in numerical weather prediction models requires an accurate representation of initial land surface conditions. Unfortunately, soil ...

Christopher M. Godfrey; David J. Stensrud

2010-08-01T23:59:59.000Z

137

Numerical Simulation of Nonlinear Mesoscale Circulations Induced by the Thermal Heterogeneities of Land Surface  

Science Conference Proceedings (OSTI)

Mesoscale circulations forced by a random distribution of surface sensible heat flux have been investigated using a three-dimensional numerical model. The complex land surface is modeled as a homogeneous random field characterized by a spectral ...

Jingfeng Wang; Elfatih A. B. Eltahir; Rafael L. Bras

1998-02-01T23:59:59.000Z

138

Role of Antecedent Land Surface Conditions in Warm Season Precipitation over Northwestern Mexico  

Science Conference Proceedings (OSTI)

The role of antecedent land surface conditions including precipitation (P), surface skin temperature (Ts), soil moisture (Sm), and snow water equivalent (SWE) anomalies on the onset and intensity of the monsoon during the 1950–99 period in the ...

Chunmei Zhu; Tereza Cavazos; Dennis P. Lettenmaier

2007-05-01T23:59:59.000Z

139

Applying Software Engineering Metrics to Land Surface Parameterization Schemes  

Science Conference Proceedings (OSTI)

In addition to model validation techniques and intermodel comparison projects, the authors propose the use of software engineering metrics as an additional tool for the enhancement of “quality” in climate models. By discriminating between ...

A. Henderson-Sellers; A. J. Pitman; B. Henderson-Sellers; D. Pollard; J. M. Verner

1995-05-01T23:59:59.000Z

140

3. New Cloud Climatology  

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

New Cloud Climatology New Cloud Climatology Computed for the summers (May-Au- gust) 2000 through 2004 (Berg and Kassianov 2008). Uses ARSCL VAP, Total Sky Imager, and radar wind profiler. * * Initial Evaluation of the Cumulus Potential Scheme at the ACRF SGP Site Larry Berg, William Gustafson, and Evgueni Kassianov Pacific Northwest National Laboratory 1. Motivation Shallow clouds are poorly predicted by current global and regional scale models. A new parameterization has been devel- oped that links the boundary-layer turbu- lence and the shallow clouds. 2. The CuP Parameterization The Cumulus Potential (CuP) param- eterization uses Probability Density Functions (PDFs) of temperature and moisture to represent the subgrid scale

Note: This page contains sample records for the topic "land-surface climatology project" 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

Infrared Land Surface Emissivity in the Vicinity of the ARM SGP Central Facility  

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

Infrared Land Surface Emissivity in the Vicinity Infrared Land Surface Emissivity in the Vicinity of the ARM SGP Central Facility R. O. Knuteson, R. G. Dedecker, W. F. Feltz, B. J. Osbourne, H. E. Revercomb, and D. C. Tobin Space Science and Engineering Center University of Wisconsin-Madison Madison, Wisconsin Introduction The University of Wisconsin Space Science and Engineering Center (UW-SSEC) has developed, under National Aeronautics and Space Administration (NASA) funding, a model for the infrared land surface emissivity (LSE) in the vicinity of the U.S. Department of Energy's (DOE) Atmospheric Radiation Measurement (ARM) Southern Great Plains (SGP) Cloud and Radiation Testbed (CART) Central Facility (CF) in North Central Oklahoma. The UW-Madison LSE model is part of the ARM best

142

A Global 9-yr Biophysical Land Surface Dataset from NOAA AVHRR Data  

Science Conference Proceedings (OSTI)

Global, monthly, 1° by 1° biophysical land surface datasets for 1982–90 were derived from data collected by the Advanced Very High Resolution Radiometer (AVHRR) on board the NOAA-7, -9, and -11 satellites. The AVHRR data are adjusted for sensor ...

S. O. Los; N. H. Pollack; M. T. Parris; G. J. Collatz; C. J. Tucker; P. J. Sellers; C. M. Malmström; R. S. DeFries; L. Bounoua; D. A. Dazlich

2000-04-01T23:59:59.000Z

143

Influences of biomass heat and biochemical energy storages on the land surface fluxes and radiative temperature  

E-Print Network (OSTI)

Influences of biomass heat and biochemical energy storages on the land surface fluxes and radiative energy storages for land-atmosphere interactions, an issue that has been largely neglected so far. We the representation of biomass energy storages against measurements of surface energy and CO2 fluxes. We

144

Land Surface Heating and the North American Monsoon Anticyclone: Model Evaluation from Diurnal to Seasonal  

E-Print Network (OSTI)

Land Surface Heating and the North American Monsoon Anticyclone: Model Evaluation from Diurnal the North American Monsoon Experiment (NAME), from observational sites as well as satellite retrievals simulations. 1. Introduction The North American monsoon (NAM) is a circulation pattern that brings summer

Miami, University of

145

Role of Land Surface Processes in South American Monsoon Development YONGKANG XUE  

E-Print Network (OSTI)

Role of Land Surface Processes in South American Monsoon Development YONGKANG XUE Department processes (VBPs) in the structure and evolution of the South American monsoon system (SAMS) with an emphasis during the monsoon mature stage, as well as better monthly mean austral summer precipitation over

Xue, Yongkang

146

Role of land surface processes in monsoon development: East Asia and West Africa  

E-Print Network (OSTI)

Role of land surface processes in monsoon development: East Asia and West Africa Yongkang Xue,1,2 H and West African monsoon development and are among the most important mechanisms governing the development of the monsoon. The results were obtained by conducting simulations for five months of 1987 using a general

Xue, Yongkang

147

An Improved Land Surface Parameterization Scheme in the ECMWF Model and Its Validation  

Science Conference Proceedings (OSTI)

A new version of the ECMWF land surface parameterization scheme is described. It has four prognostic layers in the soil for temperature and soil moisture, with a free drainage and a zero heat flux condition at the bottom as a boundary condition. ...

Pedro Viterbo; Anton C. M. Beljaars

1995-11-01T23:59:59.000Z

148

BOOK REVIEWS QUANTITATIVE REMOTE SENSING OF LAND SURFACES. By S. Liang. John  

E-Print Network (OSTI)

BOOK REVIEWS QUANTITATIVE REMOTE SENSING OF LAND SURFACES. By S. Liang. John Wiley & Sons Inc-ROM. Illustrated. Price £82�50 hard- back. This new book presents the principles of optical remote sensing. The structure, content and style of the book reflect this. It has an explicit structure: it contains neat

Liang, Shunlin

149

Evaluating the JULES Land Surface Model Energy Fluxes Using FLUXNET Data  

Science Conference Proceedings (OSTI)

Surface energy flux measurements from a sample of 10 flux network (FLUXNET) sites selected to represent a range of climate conditions and biome types were used to assess the performance of the Hadley Centre land surface model (Joint U.K. Land ...

Eleanor Blyth; John Gash; Amanda Lloyd; Matthew Pryor; Graham P. Weedon; Jim Shuttleworth

2010-04-01T23:59:59.000Z

150

Development of global hourly 0.5-degree land surface air temperature datasets  

Science Conference Proceedings (OSTI)

Land surface air temperature (SAT) is one of the most important variables in weather and climate studies, and its diurnal cycle and day-to-day variation are also needed for a variety of applications. Global long-term hourly SAT observational data, ...

Aihui Wang; Xubin Zeng

151

Development of Global Hourly 0.5° Land Surface Air Temperature Datasets  

Science Conference Proceedings (OSTI)

Land surface air temperature (SAT) is one of the most important variables in weather and climate studies, and its diurnal cycle is also needed for a variety of applications. Global long-term hourly SAT observational data, however, do not exist. ...

Aihui Wang; Xubin Zeng

2013-10-01T23:59:59.000Z

152

Introducing hysteresis in snow depletion curves to improve the water budget of a land surface model in an Alpine catchment  

Science Conference Proceedings (OSTI)

The Durance watershed (14 000 km2), located in the French Alps, generates 10% of French hydro-power and provides drinking water to 3 million people. The Catchment Land Surface Model (CLSM), a distributed land surface model (LSM) with a multilayer, ...

Claire Magand; Agnès Ducharne; Nicolas Le Moine; Simon Gascoin

153

Corn Yield Prediction Using Climatology  

Science Conference Proceedings (OSTI)

A method is developed to predict corn yield during the growing season using a plant process model (CERES-Maize), current weather data and climatological data. The procedure is to place the current year's daily weather (temperature and ...

Claude E. Duchon

1986-05-01T23:59:59.000Z

154

Modeling land-surface/atmosphere dynamics for CHAMMP. Progress report, August 1, 1992--31 July 1993  

SciTech Connect

Project progress is described on a DOE CHAMP project to model the land-surface/atmosphere coupling in a heterogeneous environment. This work is a collaboration between scientists at Iowa State University and the University of New Hampshire. Work has proceeded in two areas: baseline model coupling and data base development for model validation. The core model elements (land model, atmosphere model) have been ported to the Principal Investigator`s computing system and baseline coupling has commenced. The initial target data base is the set of observations from the FIFE field campaign, which is in the process of being acquired. For the remainder of the project period, additional data from the region surrounding the FIFE site and from other field campaigns will be acquired to determine how to best extrapolate results from the initial target region to the rest of the globe. In addition, variants of the coupled model will be used to perform experiments examining resolution requirements and coupling strategies for land-atmosphere coupling in a heterogeneous environment.

Gutowski, W.J. Jr.

1993-01-01T23:59:59.000Z

155

The Influence of Hydrologic Modeling on the Predicted Local Weather: Two-Way Coupling of a Mesoscale Weather Prediction Model and a Land Surface Hydrologic Model  

Science Conference Proceedings (OSTI)

A two-way coupling of the operational mesoscale weather prediction model known as Lokal Modell (LM; German Weather Service) with the land surface hydrologic “TOPMODEL”-Based Land Surface–Atmosphere Transfer Scheme (TOPLATS; Princeton University) ...

G. Seuffert; P. Gross; C. Simmer; E. F. Wood

2002-10-01T23:59:59.000Z

156

An Evaluation with the Fourier Amplitude Sensitivity Test (FAST) of Which Land-Surface Parameters Are of Greatest Importance in Atmospheric Modeling  

Science Conference Proceedings (OSTI)

Land-surface parameterizations based on a statistical-dynamical approach have been suggested recently to improve the representation of the surface forcing from heterogeneous land in atmospheric models. With this approach, land-surface ...

Dan C. Collins; Roni Avissar

1994-05-01T23:59:59.000Z

157

Simulating AOGCM Soil Moisture Using an Off-Line Thornthwaite Potential Evapotranspiration–Based Land Surface Scheme. Part I: Control Runs  

Science Conference Proceedings (OSTI)

Atmosphere–ocean general circulation models (AOGCMs) employ very different land surface schemes (LSSs) and, as a result, their predictions of land surface quantities are often difficult to compare. Some of the disagreement in quantities such as ...

Adam R. Cornwell; L. D. Danny Harvey

2008-07-01T23:59:59.000Z

158

The Sensitivity of a Land Surface Parameterization Scheme to the Choice of Remotely Sensed Land-Cover Datasets  

Science Conference Proceedings (OSTI)

The characteristics of satellite-derived land-cover data for climate models vary depending on sensor properties and processing options. To better understand the first-order effects of differences in land-cover data on a land surface ...

K. W. Oleson; K. L. Driese; J. A. Maslanik; W. J. Emery; W. A. Reiners

1997-07-01T23:59:59.000Z

159

Seasonal and Interannual Variations of Evapotranspiration and Energy Exchange over Different Land Surfaces in a Semiarid Area of China  

Science Conference Proceedings (OSTI)

Seasonal and interannual variations of evapotranspiration (ET) and energy exchange were estimated over degraded grassland and cropland land surfaces in a semiarid region of northeastern China using the eddy covariance technique from 2003 to 2008. ...

Liu Huizhi; Feng Jianwu

2012-10-01T23:59:59.000Z

160

Multimodel Analysis of Energy and Water Fluxes: Intercomparisons between Operational Analyses, a Land Surface Model, and Remote Sensing  

Science Conference Proceedings (OSTI)

Using data from seven global model operational analyses (OA), one land surface model, and various remote sensing retrievals, the energy and water fluxes over global land areas are intercompared for 2003/04. Remote sensing estimates of ...

Raghuveer K. Vinukollu; Justin Sheffield; Eric F. Wood; Michael G. Bosilovich; David Mocko

2012-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "land-surface climatology project" 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

A Multiscale Ensemble Filtering System for Hydrologic Data Assimilation. Part II: Application to Land Surface Modeling with Satellite Rainfall Forcing  

Science Conference Proceedings (OSTI)

Part I of this series of studies developed procedures to implement the multiscale filtering algorithm for land surface hydrology and performed assimilation experiments with rainfall ensembles from a climate model. However, a most important ...

Ming Pan; Eric F. Wood

2009-12-01T23:59:59.000Z

162

Impact of Land Surface Initialisation Approach on Sub–seasonal Forecast Skill: A Regional Analysis in the Southern Hemisphere  

Science Conference Proceedings (OSTI)

We use a sophisticated coupled land–atmosphere modelling system for a Southern Hemisphere sub–domain centred over South East Australia to evaluate differences in simulation skill from two different land surface initialisation approaches. The first ...

Annette L. Hirsch; Jatin Kala; Andy J. Pitman; Claire Carouge; Jason P. Evans; Vanessa Haverd; David Mocko

163

The Impact of Root Weighting on the Response of Transpiration to Moisture Stress in Land Surface Schemes  

Science Conference Proceedings (OSTI)

Land surface schemes (LSSs) for large-scale climate models use a variety of different methods to represent the influence of soil moisture on transpiration. One area in which they differ is in the treatment of vertical soil moisture distribution. ...

Carl E. Desborough

1997-08-01T23:59:59.000Z

164

Effects of Spatial Aggregation of Initial Conditions and Forcing Data on Modeling Snowmelt Using a Land Surface Scheme  

Science Conference Proceedings (OSTI)

Small-scale topography and snow redistribution have important effects on snow-cover heterogeneity and the timing, rate, and duration of spring snowmelt in mountain tundra environments. However, land surface schemes (LSSs) are usually applied as a ...

Pablo F. Dornes; John W. Pomeroy; Alain Pietroniro; Diana L. Verseghy

2008-08-01T23:59:59.000Z

165

Sensitivity of Climate Simulations to Land-Surface and Atmospheric Boundary-Layer Treatments-A Review  

Science Conference Proceedings (OSTI)

Aspects of the land-surface and boundary-layer treatments in some 20 or so atmospheric general circulation models (GCMS) are summarized. In only a small fraction of these have significant sensitivity studies been carried out and published. ...

J. R. Garratt

1993-03-01T23:59:59.000Z

166

Spatial and Temporal Scales of Boundary Layer Wind Predictability in Response to Small-Amplitude Land Surface Uncertainty  

Science Conference Proceedings (OSTI)

Predictability experiments with the Weather Research and Forecast (WRF) model as a proxy for the atmosphere are analyzed to quantify the spatial and temporal scales of boundary layer wind response to land surface perturbations. Soil moisture is ...

Joshua P. Hacker

2010-01-01T23:59:59.000Z

167

Copula-Derived Observation Operators for Assimilating TMI and AMSR-E Retrieved Soil Moisture into Land Surface Models  

Science Conference Proceedings (OSTI)

Assimilating soil moisture from satellite remote sensing into land surface models (LSMs) has potential for improving model predictions by providing real-time information at large scales. However, the majority of the research demonstrating this ...

Huilin Gao; Eric F. Wood; Matthias Drusch; Matthew F. McCabe

2007-06-01T23:59:59.000Z

168

A Study of the Sensitivity of Land Surface parameterizations to the Inclusion of Different Fractional Covers and Soil Textures  

Science Conference Proceedings (OSTI)

The inclusion of processes relating to soil type and vegetation is very important in an attempt to improve a land surface parameterization for use in different scale atmospheric models. There is already sample micro-meteorological information ...

D. T. Mihailovic; H. A. R. de Bruin; M. Jeftic; A. Van Dijken

1992-12-01T23:59:59.000Z

169

Relationships among Remotely Sensed Data, Surface Energy Balance, and Area-Averaged Fluxes over Partially Vegetated Land Surfaces  

Science Conference Proceedings (OSTI)

Numerous recent field experiments have examined the use of remote sensing to estimate land surface fluxes of latent and sensible heat using combinations of thermal, visible, and near-infrared data. While substantial progress has been made, ...

M. A. Friedl

1996-11-01T23:59:59.000Z

170

AVHRR-Derived Land Surface Conditions for Flux Simulations with a Mesoscale Model over the HAPEX-Sahel Study Area  

Science Conference Proceedings (OSTI)

The description of land surface conditions at a spatial scale adapted to climate and meteorological models is at the core of major problems in environment studies. In this regard, the information routinely provided by remote sensing observations ...

Roselyne Lacaze; Sylvie Donier; Pierre Lacarrère; Jean-Louis Roujean

2003-06-01T23:59:59.000Z

171

Global Fields of Soil Moisture and Land Surface Evapotranspiration Derived from Observed Precipitation and Surface Air Temperature  

Science Conference Proceedings (OSTI)

The global fields of normal monthly soil moisture and land surface evapotranspiration are derived with a simple water budget model that has precipitation and potential evapotranspiration as inputs. The precipitation is observed and the potential ...

Y. Mintz; G. K. Walker

1993-08-01T23:59:59.000Z

172

Modeling the Effect of Land Surface Evaporation Variability on Precipitation Variability. Part II: Time- and Space-Scale structure  

Science Conference Proceedings (OSTI)

This is the second of a two-part article investigating the impact of variations of land surface evaporability on the interannual variability of precipitation. The first goal of this part is to analyze the relationship between the atmospheric ...

Oreste Reale; Paul Dirmeyer; Adam Schlosser

2002-08-01T23:59:59.000Z

173

Evaluation of the Relationship between Air and Land Surface Temperature under Clear- and Cloudy-Sky Conditions  

Science Conference Proceedings (OSTI)

Clear and cloudy daytime comparisons of land surface temperature (LST) and air temperature (Tair) were made for 14 stations included in the U.S. Climate Reference Network (USCRN) of stations from observations made from 2003 through 2008. ...

Kevin Gallo; Robert Hale; Dan Tarpley; Yunyue Yu

2011-03-01T23:59:59.000Z

174

Prototyping a Generic, Unified Land Surface Classification and Screening Methodology for GPM-Era Microwave Land Precipitation Retrieval Algorithms  

Science Conference Proceedings (OSTI)

A prototype generic, unified land surface classification and screening methodology for Global Precipitation Measurement (GPM)-era microwave land precipitation retrieval algorithms by using ancillary datasets is developed. As an alternative to the ...

Arief Sudradjat; Nai-Yu Wang; Kaushik Gopalan; Ralph R. Ferraro

2011-06-01T23:59:59.000Z

175

Impact of Scale and Aggregation on the Terrestrial Water Exchange: Integrating Land Surface Models and Rhône Catchment Observations  

Science Conference Proceedings (OSTI)

Land surface models (LSMs) used in climate modeling include detailed above-ground biophysics but usually lack a good representation of runoff. Both processes are closely linked through soil moisture. Soil moisture however has a high spatial ...

Reto Stöckli; Pier Luigi Vidale; Aaron Boone; Christoph Schär

2007-10-01T23:59:59.000Z

176

Principal Components of Multi-Frequency Microwave Land Surface Emissivities. Part 2: Effects of Previous-Time Precipitation  

Science Conference Proceedings (OSTI)

The microwave land surface emissivity (MLSE) over the continental United States was examined during 2011 as a function of previous rainfall conditions using two independent emissivity estimation techniques, one providing instantaneous estimates ...

Yalei You; F. Joseph Turk; Ziad S. Haddad; Li Li; Guosheng Liu

177

A Continental-Scale Classification of Rainfall Seasonality Regimes in Africa Based on Gridded Precipitation and Land Surface Temperature Products  

Science Conference Proceedings (OSTI)

A classification of rainfall seasonality regimes in Africa was derived from gridded rainfall and land surface temperature products. By adapting a method that goes back to Walter and Lieth’s approach of presenting climatic diagrams, relationships ...

Stefanie M. Herrmann; Karen I. Mohr

2011-12-01T23:59:59.000Z

178

Evaluation of the Parameter Sensitivities of a Coupled Land Surface Hydrologic Model at a Critical Zone Observatory  

Science Conference Proceedings (OSTI)

Land surface models (LSMs) and hydrologic models are parameterized models. The number of involved parameters is often large. Sensitivity analysis (SA) is a key step to understand the complex relationship between state variables and parameters, and ...

Yuning Shi; Kenneth J. Davis; Fuqing Zhang; Christopher J. Duffy

179

Sensitivity of Latent Heat Flux from PILPS Land-Surface Schemes to Perturbations of Surface Air Temperature  

Science Conference Proceedings (OSTI)

In the PILPS Phase 2a experiment, 23 land-surface schemes were compared in an off-line control experiment using observed meteorological data from Cabauw, the Netherlands. Two simple sensitivity experiments were also undertaken in which the ...

Weiqing Qu; A. Henderson-Sellers; A. J. Pitman; T. H. Chen; F. Abramopoulos; A. Boone; S. Chang; F. Chen; Y. Dai; R. E. Dickinson; L. Dümenil; M. Ek; N. Gedney; Y. M. Gusev; J. Kim; R. Koster; E. A. Kowalczyk; J. Lean; D. Lettenmaier; X. Liang; J.-F. Mahfouf; H.-T. Mengelkamp; K. Mitchell; O. N. Nasonova; J. Noilhan; A. Robock; C. Rosenzweig; J. Schaake; C. A. Schlosser; J.-P. Schulz; A. B. Shmakin; D. L. Verseghy; P. Wetzel; E. F. Wood; Z.-L. Yang; Q. Zeng

1998-06-01T23:59:59.000Z

180

A Simple Coupled Atmosphere–Ocean–Sea Ice–Land Surface Model for Climate and Paleoclimate Studies  

Science Conference Proceedings (OSTI)

The authors develop a coupled atmosphere–ocean–sea ice–land surface model for long-term climate change studies that incorporates the seasonal cycle. Three ocean basins, the Antarctic Circumpolar Current region, and the major continents are ...

Zhaomin Wang; Lawrence A. Mysak

2000-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "land-surface climatology project" 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

Regional Parameter Estimation of the VIC Land Surface Model: Methodology and Application to River Basins in China  

Science Conference Proceedings (OSTI)

This paper presents a methodology for regional parameter estimation of the three-layer Variable Infiltration Capacity (VIC-3L) land surface model with the goal of improving the streamflow simulation for river basins in China. This methodology is ...

Zhenghui Xie; Fei Yuan; Qingyun Duan; Jing Zheng; Miaoling Liang; Feng Chen

2007-06-01T23:59:59.000Z

182

Parameterization of Land Surface Processes to Study Boundary Layer Characteristics over a Semiarid Region in Northwest India  

Science Conference Proceedings (OSTI)

The atmospheric boundary layer and land surface processes play a crucial role and affect large-scale phenomena such as monsoons. A comprehensive soil–vegetation parameterization scheme has been developed to understand the complex interaction of ...

A. N. V. Satyanarayana; V. N. Lykossov; U. C. Mohanty; E. E. Machul'skaya

2003-04-01T23:59:59.000Z

183

A Midlatitude Cirrus Cloud Climatology from the Facility for Atmospheric Remote Sensing. Part III: Radiative Properties  

Science Conference Proceedings (OSTI)

In Part III of a series of papers describing the extended time high-cloud observations from the University of Utah Facility for Atmospheric Remote Sensing (FARS) supporting the First International Satellite Cloud Climatology Project (ISCCP) ...

Kenneth Sassen; Jennifer M. Comstock

2001-08-01T23:59:59.000Z

184

Comparison of the Climatologies of High-Level Clouds from HIRS and ISCCP  

Science Conference Proceedings (OSTI)

Comparison of individually matched analyses of high-level cloudiness from the High-Resolution Infrared Sounder (HIRS) CO2-slicing analysis and the International Satellite Cloud Climatology Project (ISCCP) analysis of satellite data for 4 months ...

Yao Jin; William B. Rossow; Don P. Wylie

1996-11-01T23:59:59.000Z

185

Optimal Estimation of the Climatological Mean  

Science Conference Proceedings (OSTI)

This paper shows theoretically and with examples that climatological means derived from spectral methods predict independent data with less error than climatological means derived from simple averaging. Herein, “spectral methods” indicates a ...

Balachandrudu Narapusetty; Timothy DelSole; Michael K. Tippett

2009-09-01T23:59:59.000Z

186

Solar Energy Climatology of North Carolina  

Science Conference Proceedings (OSTI)

A solar energy climatology for North Carolina was developed using radiation data from the six SOLMET stations in the state. The climatology provides information needed to design solar powered space and water heating systems, and evaluate their ...

Peter J. Robinson; William E. Easterling

1982-11-01T23:59:59.000Z

187

A Comparison of Sea Surface Temperature Climatologies  

Science Conference Proceedings (OSTI)

Six global and two regional Pacific monthly sea surface temperature climatologies were compared. The climatologies were based on either surface marine observations or oceanographic cast (surface plus subsurface temperatures) observations. ...

Richard W. Reynolds

1983-03-01T23:59:59.000Z

188

--No Title--  

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

Set Released The ORNL DAAC announces the release of a data set from the Radiation and Clouds category of the International Satellite Land-Surface Climatology Project (ISLSCP)...

189

Toward A National Early Warning System for Forest Disturbances Using Remotely Sensed Land Surface Phenology  

Science Conference Proceedings (OSTI)

We are using a statistical clustering method for delineating homogeneous ecoregions as a basis for identifying disturbances in forests through time over large areas, up to national and global extents. Such changes can be shown relative to past conditions, or can be predicted relative to present conditions, as with forecasts of future climatic change. This quantitative ecoregion approach can be used to predict destinations for populations whose local environments are forecast to become unsuitable and are forced to migrate as their habitat shifts, and is also useful for predicting the susceptibility of new locations to invasive species like Sudden Oak Death. EFETAC and our sister western center WWETAC, along with our NASA and ORNL collaborators, are designing a new national-scale early warning system for forest threats, called FIRST. Envisioned as a change-detection system, FIRST will identify all land surface cover changes at the MODIS observational scale, and then try to discriminate normal, expected seasonal changes from locations having unusual activity that may represent potential forest threats. As a start, we have developed new national data sets every 16 days from 2002 through 2008, based on land surface phenology, or timing of leaf-out in the spring and brown-down in the fall. Changes in such phenological maps will be shown to contain important information about vegetation health status across the United States. The standard deviation of the duration of fall can be mapped, showing places where length of fall is relatively constant or is variable in length from year to year.

HargroveJr., William Walter [USDA Forest Service; Spruce, Joe [NASA Stennis Space Center; Gasser, Gerry [NASA Stennis Space Center; Hoffman, Forrest M [ORNL

2009-12-01T23:59:59.000Z

190

Monthly Climatology, Meteorology Services, Environmental Sciences...  

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

Monthly Climatology Snowfall Precipitation Solar Irradiance Max Temperature Min Temperature Mean Temperature Heating Degree-days Cooling Degree-days Meteorological Extremes Long...

191

Near-Surface and Land Surface Forecast System of the Vancouver 2010 Winter Olympic and Paralympic Games  

Science Conference Proceedings (OSTI)

A high-resolution 2D near-surface and land surface model was developed to produce snow and temperature forecasts over the complex alpine region of the Vancouver 2010 Winter Olympic and Paralympic Games. The model is driven by downscaled ...

Natacha B. Bernier; Stéphane Bélair; Bernard Bilodeau; Linying Tong

2011-08-01T23:59:59.000Z

192

Modeling the Summertime Climate of Southwest Asia: The Role of Land Surface Processes in Shaping the Climate of Semiarid Regions  

Science Conference Proceedings (OSTI)

Presented is a study on the role of land surface processes in determining the summertime climate over the semiarid region of southwest Asia. In this region, a warm surface air temperature bias of 3.5°C is simulated in the summer by using the ...

Marc P. Marcella; Elfatih A. B. Eltahir

2012-01-01T23:59:59.000Z

193

Modeling the Summertime Climate of Southwest Asia: The Role of Land Surface Processes in Shaping the Climate of Semiarid Regions  

E-Print Network (OSTI)

Presented is a study on the role of land surface processes in determining the summertime climate over the semiarid region of southwest Asia. In this region, a warm surface air temperature bias of 3.5°C is simulated in the ...

Marcella, Marc P.

194

Assessment of the Regional Climate Model Version 3 over the Maritime Continent Using Different Cumulus Parameterization and Land Surface Schemes  

Science Conference Proceedings (OSTI)

This paper describes an assessment of the Regional Climate Model, version 3 (RegCM3), coupled to two land surface schemes: the Biosphere–Atmosphere Transfer System, version 1e (BATS1e), and the Integrated Biosphere Simulator (IBIS). The model’s ...

Rebecca L. Gianotti; Dongfeng Zhang; Elfatih A. B. Eltahir

2012-01-01T23:59:59.000Z

195

Intercomparison Study of the Land Surface Process Model and the Common Land Model for a Prairie Wetland in Florida  

Science Conference Proceedings (OSTI)

Common Land Model (CLM) and Land Surface Process (LSP) model simulations are compared to measured values for a 13-day dry-down period with a rapidly decreasing near-surface water table for a marsh wetland community in Florida. LSP was able to ...

B. Whitfield; J. M. Jacobs; J. Judge

2006-12-01T23:59:59.000Z

196

A Coupled Biosphere–Atmosphere Climate Model Suitable for Studies of Climatic Change Due to Land Surface Alterations  

Science Conference Proceedings (OSTI)

A biosphere model based on BATS (Biosphere–Atmosphere Transfer Scheme) is coupled to a primitive equation global statistical–dynamical model in order to study the climatic impact due to land surface alterations. The fraction of the earth’s ...

Mário Adelmo Varejão-Silva; Sergio H. Franchito; Vadlamudi Brahmananda Rao

1998-07-01T23:59:59.000Z

197

A Simple Parcel Method for Prediction of Cumulus Onset and Area-Averaged Cloud Amount over Heterogeneous Land Surfaces  

Science Conference Proceedings (OSTI)

The purpose of this note is to compare several methods for predicting the onset and quantitative amount of cloud cover over heterogeneous land surfaces. Among the methods tested are that of Wilde et al. (1985) and a new, simple parcel approach. ...

Peter J. Wetzel

1990-06-01T23:59:59.000Z

198

A Midlatitude Cirrus Cloud Climatology from the Facility for Atmospheric Remote Sensing. Part I: Macrophysical and Synoptic Properties  

Science Conference Proceedings (OSTI)

A uniquely extensive high cloud dataset has been collected from the University of Utah Facility for Atmospheric Remote Sensing in support of the First (ISCCP) International Satellite Cloud Climatology Project Regional Experiment extended time ...

Kenneth Sassen; James R. Campbell

2001-03-01T23:59:59.000Z

199

Coupling an Advanced Land Surface–Hydrology Model with the Penn State–NCAR MM5 Modeling System. Part I: Model Implementation and Sensitivity  

Science Conference Proceedings (OSTI)

This paper addresses and documents a number of issues related to the implementation of an advanced land surface–hydrology model in the Penn State–NCAR fifth-generation Mesoscale Model (MM5). The concept adopted here is that the land surface model ...

Fei Chen; Jimy Dudhia

2001-04-01T23:59:59.000Z

200

Analysis of the linkages between rainfall and land surface conditions in the West African monsoon through CMAP, ERS-WSC, and  

E-Print Network (OSTI)

Analysis of the linkages between rainfall and land surface conditions in the West African monsoon monsoon. Citation: Philippon, N., E. Mougin, L. Jarlan, and P.-L. Frison (2005), Analysis of the linkages between rainfall and land surface conditions in the West African monsoon through CMAP, ERS-WSC, and NOAA

Paris-Sud XI, Université de

Note: This page contains sample records for the topic "land-surface climatology project" 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

Simulating the Effects of Irrigation over the United States in a Land Surface Model Based on Satellite-Derived Agricultural Data  

Science Conference Proceedings (OSTI)

A novel method is introduced for integrating satellite-derived irrigation data and high-resolution crop-type information into a land surface model (LSM). The objective is to improve the simulation of land surface states and fluxes through better ...

Mutlu Ozdogan; Matthew Rodell; Hiroko Kato Beaudoing; David L. Toll

2010-02-01T23:59:59.000Z

202

Relative Roles of Large-Scale Orography and Land Surface Processes in the Global Hydroclimate. Part II: Impacts on Hydroclimate over Eurasia  

Science Conference Proceedings (OSTI)

A series of simplistic simulations from an AGCM coupled to a simple land surface scheme and water vapor tracers was performed to explore the relative roles of basic factors in land surface conditions, with regard to the seasonal evolution of the ...

Kazuyuki Saito; Tetsuzo Yasunari; Kumiko Takata

2006-08-01T23:59:59.000Z

203

Influences of biomass heat and biochemical energy storages on the land surface fluxes and radiative temperature  

SciTech Connect

We conducted observations and modeling at a forest site to assess importance of biomass heat and biochemical energy storages for land-atmosphere interactions. We used the terrestrial ecosystem Fluxes And Pools Integrated Simulator (FAPIS). We first examined FAPIS performance by testing its predictions with and without biomass energy storages against measurements of surface energy and CO2 fluxes. We then evaluated the magnitudes and temporal patterns of the calculated biomass energy storages. Effects of energy storages on flux exchanges and variations of radiative temperature were investigated by contrasting FAPIS simulations with and without the storages. We found that with the storages, FAPIS predictions agreed with measurements well; without them, FAPIS performance deteriorated for all surface energy fluxes. The biomass heat storage and biochemical energy storage had clear diurnal patterns with typical ranges from -50 to 50 and -3 to 20 Wm-2, respectively; these typical ranges were exceeded substantially when there were sudden changes in atmospheric conditions. Without-storage simulations produced larger sensible and latent heat fluxes during the day but smaller fluxes (more negative values) at night as compared with with-storage simulations. Similarly, without-storage simulations had higher surface radiative temperature during the day but lower radiative temperature at night, indicating that the biomass energy storages act to dampen diurnal temperature range. Therefore, biomass heat and biochemical energy storages are an integral and substantial part of the surface energy budget and play a role in modulating land surface temperatures and must be considered in studies of land - atmosphere interactions and climate modeling.

Gu, Lianhong [ORNL; Meyers, T. P. [NOAA ATDD; Pallardy, Stephen G. [University of Missouri; Hanson, Paul J [ORNL; Yang, Bai [ORNL; Heuer, Mark [ATDD, NOAA; Hosman, K. P. [University of Missouri; Liu, Qing [ORNL; Riggs, Jeffery S [ORNL; Sluss, Daniel Wayne [ORNL; Wullschleger, Stan D [ORNL

2007-01-01T23:59:59.000Z

204

Land ecosystems cover nearly 30% of the Earth's surface. The land surface changes over days, seasons, decades, and longer. Vegetation  

E-Print Network (OSTI)

erupt. Activities of the growing human population cause or influence many of these changes. Terrestrial://hsb.gsfc.nasa.gov #12;Land Surface Observation Forcing ·Precipitation ·Wind ·Humidity ·Radiation ·Air Temperature ·Evapotranspiration ·Sensible Heat Flux ·Radiation ·Runoff ·Drainage Soil Moisture Snow, Ice, Rainfall Snow Vegetation

Li, Zhanqing

205

Climatology of Cyclogenesis Mechanisms in the Mediterranean  

Science Conference Proceedings (OSTI)

A general climatology of the main mechanisms involved in Mediterranean cyclogenesis is presented. A diagnostic study of both composite means and case studies is performed to analyze processes occurring in different seasons, and in different ...

Isabel F. Trigo; Grant R. Bigg; Trevor D. Davies

2002-03-01T23:59:59.000Z

206

A Climatology of the Aleutian High  

Science Conference Proceedings (OSTI)

Three global datasets are used to investigate climatological properties of the high pressure system commonly found in the boreal winter stratosphere over the Aleutian Islands. Based on a detailed examination of 10 years (1985–1994) of data from ...

V. Lynn Harvey; Matthew H. Hitchman

1996-07-01T23:59:59.000Z

207

Climatological Time Series with Periodic Correlation  

Science Conference Proceedings (OSTI)

Many climatological time series display a periodic correlation structure. This paper examines three issues encountered when analyzing such time series: detection of periodic correlation, modeling periodic correlation, and trend estimation under ...

Robert Lund; Harry Hurd; Peter Bloomfield; Richard Smith

1995-11-01T23:59:59.000Z

208

Composite Climatology of Florida Summer Thunderstorms  

Science Conference Proceedings (OSTI)

In an attempt to produce an objective climatology of peninsular Florida thunderstorms that does not suffer from observer bias, we composited 9088 hours of high-resolution manually digitized radar (MDR) data and 28 days of daytime satellite ...

Patrick J. Michaels; Roger A. Pielke; J. T. Mcqueen; D. E. Sappington

1987-11-01T23:59:59.000Z

209

Use of Climatological Data in Weather Insurance  

Science Conference Proceedings (OSTI)

There are three major types of crop-related weather insurance: hail, all perlis, and rain insurance. The development of rates is an exercise in applied climatology, and the importance of the historical data selected for assessing risk (and ...

Stanley A. Changnon; Joyce M. Changnon

1990-05-01T23:59:59.000Z

210

Subtropical Climatology of Direct Beam Solar Radiation  

Science Conference Proceedings (OSTI)

A climatology of direct beam irradiance has been compiled for Mauna Loa Observatory. A broadband transmittance, calculated from the direct-beam data, has been stratified into clear sky and optically thin and thick cloud regimes; statistics of ...

T. M. Thompson; S. K. Cox

1982-03-01T23:59:59.000Z

211

Global Cloud Climatologies: A Historical Review  

Science Conference Proceedings (OSTI)

Accurate global cloud information is required for many climate studies, particularly for validation of climate model simulations. This paper reviews the cloud climatologies currently available, identifying and attempting to explain the ...

N. A. Hughes

1984-05-01T23:59:59.000Z

212

Climatological effects of atmospheric ozone: A review  

Science Conference Proceedings (OSTI)

The paper presents some results of model estimates of ozone (O/sub 3/) climatological effects. Specific issues involved in O/sub 3/ climate study and future research needs are discussed. (ACR)

Wang, W.C.

1984-01-01T23:59:59.000Z

213

Climatology of the Equatorial Lower Stratosphere  

Science Conference Proceedings (OSTI)

Twenty years of radiosonde data have been analyzed in an attempt to develop a latitudinal structure climatology of winds, temperature and geopotential at 30 and 50 mb in the equatorial stratosphere. The fine latitudinal resolution provided by the ...

Timothy J. Dunkerton; Donald P. Delisi

1985-02-01T23:59:59.000Z

214

A Precipitation Climatology of 5-Day Periods  

Science Conference Proceedings (OSTI)

A precipitation climatology has been developed for the relative frequencies of zero, one, or two or more days with measurable precipitation within 5-day periods. In addition, the distribution of precipitation amounts is given for the one wet day ...

E. S. Epstein; A. G. Barnston

1990-02-01T23:59:59.000Z

215

Atlantic Subtropical Storms. Part II: Climatology  

Science Conference Proceedings (OSTI)

A 45-yr climatology of subtropical cyclones (ST) for the North Atlantic is presented and analyzed. The STs pose a warm-season forecasting problem for subtropical locations such as Bermuda and the southern United States because of the potentially ...

Mark P. Guishard; Jenni L. Evans; Robert E. Hart

2009-07-01T23:59:59.000Z

216

Climatology of Strong Intermountain Cold Fronts  

Science Conference Proceedings (OSTI)

Motivated by the intensity and severity of winds and temperature falls that frequently accompany rapidly developing cold fronts in northern Utah, this paper presents a 25-yr climatology of strong cold frontal passages over the Intermountain West ...

Jason C. Shafer; W. James Steenburgh

2008-03-01T23:59:59.000Z

217

A Global Climatology of Tropical Moisture Exports  

Science Conference Proceedings (OSTI)

In a recent paper, a climatology of tropical moisture exports (TMEs) to the Northern Hemisphere (NH) was constructed on the basis of 7-day forward trajectories, started daily from the tropical lower troposphere, which were required to reach a ...

Peter Knippertz; Heini Wernli; Gregor Gläser

2013-05-01T23:59:59.000Z

218

Quantifying and relating land-surface and subsurface variability in permafrost environments using lidar and surface geophsical datasets  

Science Conference Proceedings (OSTI)

The complexity of permafrost dynamics and its critical impact on climate feedbacks warrant continued development of advanced high-latitude terrestrial ecosystem characterization and monitoring approaches. In this study, we explore the value of remote sensing and surface geophysical data for characterizing land surface and subsurface properties and their linkages in an Alaskan Coastal Plain ecosystem. We base our study on data collected at the end of the 2011 growing season in the Barrow Environmental Observatory, where a nested suite of measurements were collected within a polygon-dominated region including: surface ground penetrating radar, electromagnetic, and electrical resistance tomography data; thaw depth, soil temperature and moisture content, soil texture, soil carbon and nitrogen content, and major and trace cations. Previously-collected lidar data were also available for the study. Analysis of the datasets, individually and in combination, revealed the utility of the methods for characterizing critical land-surface and subsurface properties and associated spatial zonation. Lidar analysis was performed to extract geomorphic metrics (such as slope, curvature, and directed distance of polygons), which potentially indicate drainage potential and permafrost deformation state. Cluster analysis of these lidar-obtained attributes suggested that the land surface can be grouped into three spatially coherent zones, each having a dominant geomorphic expression including: a high centered polygon zone, a low centered polygon zone and a transitional zone. Comparison of the geophysical attributes from radar, electrical resistance tomography, and electromagnetic data with point measurements suggests that the surface geophysical data can provide very high-resolution information about subsurface properties that affect ecosystem feedbacks to climate, such as thaw depth and moisture content. Cluster analysis suggested that the geophysical attributes also varied spatially in a systematic way, suggesting the presence of three laterally distinct subsurface zones. Analysis of zone-based subsurface point measurements suggests that the geophysically-defined zones have unique distributions of hydrological, thermal, and geochemical properties and that the subsurface (geophysically-based) and land-surface (lidar-based) zonation is consistent. Although the close linkage between land surface (polygonal geomorphology) and subsurface (active layer) variability revealed through our study is not surprising, to our knowledge this is the first study to document such relationships using high resolution and non-invasive approaches. This study suggests the potential of using coincident lidar and surface geophysical measurements to quantify land surface and subsurface properties (respectively) and their linkages, which are likely to play a role in terrestrial ecosystem evolution and feedbacks to climate. These findings open the way for future research focused on using combined geophysical and remote sensing datasets to estimate subsurface and land-surface properties in high resolution and over large regions as is needed for process understanding and numerical model initialization in high latitude terrestrial ecosystems.

Hubbard, Susan S [Lawrence Berkeley National Laboratory (LBNL); Gangodagmage, C [Los Alamos National Laboratory (LANL); Dafflon, B [Lawrence Berkeley National Laboratory (LBNL); Wainwright, H [Lawrence Berkeley National Laboratory (LBNL); Peterson, J [Lawrence Berkeley National Laboratory (LBNL); Gusmeroli, A [University of Alaska, Fairbanks; Ulrich, Craig [Lawrence Berkeley National Laboratory (LBNL); Wu, Yuxin [Lawrence Berkeley National Laboratory (LBNL); Wilson, Cathy [Los Alamos National Laboratory (LANL); Rowland, J [Los Alamos National Laboratory (LANL); Tweedie, Craig [University of Texas, El Paso; Wullschleger, Stan D [ORNL

2013-01-01T23:59:59.000Z

219

Land Surface Heterogeneity in the Cooperative Atmosphere Surface Exchange Study (CASES-97). Part II: Analysis of Spatial Heterogeneity and Its Scaling  

Science Conference Proceedings (OSTI)

Multiscale atmospheric forcing data at 1-, 5-, and 10-km scales from the 1997 Cooperative Atmosphere Surface Exchange Study (CASES-97) were used to drive three uncoupled land surface models: the National Center for Atmospheric Research Land ...

David N. Yates; Fei Chen; Haruyasu Nagai

2003-04-01T23:59:59.000Z

220

Investigation of the Sensitivity of Water Cycle Components Simulated by the Canadian Regional Climate Model to the Land Surface Parameterization, the Lateral Boundary Data, and the Internal Variability  

Science Conference Proceedings (OSTI)

This study investigates the sensitivity of components of the hydrological cycle simulated by the Canadian Regional Climate Model (CRCM) to lateral boundary forcing, the complexity of the land surface scheme (LSS), and the internal variability ...

Biljana Music; Daniel Caya

2009-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "land-surface climatology project" 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

The Effects of Remotely Sensed Plant Functional Type and Leaf Area Index on Simulations of Boreal Forest Surface Fluxes by the NCAR Land Surface Model  

Science Conference Proceedings (OSTI)

The land surface models used with atmospheric models typically characterize landscapes in terms of generalized biome types. However, the advent of high–spatial resolution satellite-derived data products such as land cover and leaf area index (LAI)...

Keith W. Oleson; Gordon B. Bonan

2000-10-01T23:59:59.000Z

222

Land Surface Heterogeneity in the Cooperative Atmosphere Surface Exchange Study (CASES-97). Part I: Comparing Modeled Surface Flux Maps with Surface-Flux Tower and Aircraft Measurements  

Science Conference Proceedings (OSTI)

Land surface heterogeneity over an area of 71 km × 74 km in the lower Walnut River watershed, Kansas, was investigated using models and measurements from the 1997 Cooperative Atmosphere Surface Exchange Study (CASES-97) field experiment. As an ...

Fei Chen; David N. Yates; Haruyasu Nagai; Margaret A. LeMone; Kyoko Ikeda; Robert L. Grossman

2003-04-01T23:59:59.000Z

223

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

Science Conference Proceedings (OSTI)

An evaluation is presented of the impact on tropical climate of continental-scale perturbations given by different representations of land surface processes (LSP) in a general circulation model that includes atmosphere-ocean interactions. One ...

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

224

Validation of the Coupled NCEP Mesoscale Spectral Model and an Advanced Land Surface Model over the Hawaiian Islands. Part II: A High Wind Event  

Science Conference Proceedings (OSTI)

A high wind event (14–15 February 2001) over the Hawaiian Islands associated with a cold front is simulated using the National Centers for Environmental Prediction (NCEP) Mesoscale Spectral Model (MSM) coupled with an advanced land surface model (...

Yongxin Zhang; Yi-Leng Chen; Kevin Kodama

2005-12-01T23:59:59.000Z

225

Testing the Effects of a New Land Surface Scheme and of Initial Soil Moisture Conditions in the Canadian Global Forecast Model  

Science Conference Proceedings (OSTI)

A new land surface scheme developed for the Canadian general circulation model has been introduced into the Canadian global forecast model and tested for a summer case. It features three soil layers, a snow layer, and a vegetation layer; its ...

Yves Delage; Diana Verseghy

1995-11-01T23:59:59.000Z

226

An Evaluation of Two Models for Estimation of the Roughness Height for Heat Transfer between the Land Surface and the Atmosphere  

Science Conference Proceedings (OSTI)

Roughness height for heat transfer is a crucial parameter in estimation of heat transfer between the land surface and the atmosphere. Although many empirical formulations have been proposed over the past few decades, the uncertainties associated ...

Z. Su; T. Schmugge; W. P. Kustas; W. J. Massman

2001-11-01T23:59:59.000Z

227

Atmosphere–Land Surface Interactions over the Southern Great Plains: Characterization from Pentad Analysis of DOE ARM Field Observations and NARR  

Science Conference Proceedings (OSTI)

The Department of Energy Atmospheric Radiation Measurement Program (ARM) Southern Great Plains (SGP) site data are analyzed to provide insight into atmosphere–land surface interactions generating summertime precipitation variability. Pentad-...

Alfredo Ruiz-Barradas; Sumant Nigam

2013-02-01T23:59:59.000Z

228

Investigation of Large-Scale Atmospheric Moisture Budget and Land Surface Interactions over U.S. Southern Great Plains including for CLASIC (June 2007)  

Science Conference Proceedings (OSTI)

The atmospheric moisture budget and surface interactions for the southern Great Plains are evaluated for contrasting May–June periods (1998, 2002, 2006, and 2007) as background for the Cloud and Land Surface Interaction Campaign (CLASIC) of (wet) ...

Peter J. Lamb; Diane H. Portis; Abraham Zangvil

2012-12-01T23:59:59.000Z

229

Relative Roles of Large-Scale Orography and Land Surface Processes in the Global Hydroclimate. Part I: Impacts on Monsoon Systems and the Tropics  

Science Conference Proceedings (OSTI)

A series of numerical simulations by an atmospheric general circulation model (AGCM) was conducted to evaluate the relative roles of Tibetan Plateau (TP) and continental-scale land surface processes on the Asian monsoon and hydroclimates in other ...

Tetsuzo Yasunari; Kazuyuki Saito; Kumiko Takata

2006-08-01T23:59:59.000Z

230

Estimating Land Surface Energy Budgets From Space: Review and Current Efforts at the University of Wisconsin—Madison and USDA–ARS  

Science Conference Proceedings (OSTI)

Since the advent of the meteorological satellite, a large research effort within the community of earth scientists has been directed at assessing the components of the land surface energy balance from space. The development of these techniques ...

George R. Diak; John R. Mecikalski; Martha C. Anderson; John M. Norman; William P. Kustas; Ryan D. Torn; Rebecca L. DeWolf

2004-01-01T23:59:59.000Z

231

Evaluation of the Noah Land Surface Model Using Data from a Fair-Weather IHOP_2002 Day with Heterogeneous Surface Fluxes  

Science Conference Proceedings (OSTI)

Sources of differences between observations and simulations for a case study using the Noah land surface model–based High-Resolution Land Data Assimilation System (HRLDAS) are examined for sensible and latent heat fluxes H and LE, respectively; ...

Margaret A. LeMone; Mukul Tewari; Fei Chen; Joseph G. Alfieri; Dev Niyogi

2008-12-01T23:59:59.000Z

232

A long-term hydrologically based data set of land surface fluxes and states for the conterminous U.S.: Update and extensions  

Science Conference Proceedings (OSTI)

We describe a publicly available, long-term (1915 – 2011), hydrologically consistent data set for the conterminous United States, intended to aid in studies of water and energy exchanges at the land surface. These data are gridded at a spatial ...

Ben Livneh; Eric A. Rosenberg; Chiyu Lin; Bart Nijssen; Vimal Mishra; Kostas M. Andreadis; Edwin P. Maurer; Dennis P. Lettenmaier

233

A Revised Land Surface Parameterization (SiB2) for GCMS. Part III: The Greening of the Colorado State University General Circulation Model  

Science Conference Proceedings (OSTI)

SiB2, the second-generation land-surface parameterization developed by Sellers et al., has been incorporated into the Colorado State University general circulation model and tested in multidecade simulation. The control run uses a “bucket” ...

D.A. Randall; D.A. Dazlich; C. Zhang; A.S. Denning; P.J. Sellers; C.J. Tucker; L. Bounoua; J.A. Berry; G.J. Collatz; C.B. Field; S.O. Los; C.O. Justice; I. Fung

1996-04-01T23:59:59.000Z

234

Albedo estimates for land surface models and support for a new paradigm based on foliage nitrogen concentration  

Science Conference Proceedings (OSTI)

Vegetation albedo is a critical component of the Earth s climate system, yet efforts to evaluate and improve albedo parameterizations in climate models have lagged relative to other aspects of model development. Here, we calculated growing season albedos for deciduous and evergreen forests, crops, and grasslands based on over 40 site-years of data from the AmeriFlux network and compared them with estimates presently used in the land surface formulations of a variety of climate models. Generally, the albedo estimates used in land surface models agreed well with this data compilation. However, a variety of models using fixed seasonal estimates of albedo overestimated the growing season albedo of northerly evergreen trees. In contrast, climatemodels that rely on a common two-stream albedo submodel provided accurate predictions of boreal needle-leaf evergreen albedo but overestimated grassland albedos. Inverse analysis showed that parameters of the two-stream model were highly correlated. Consistent with recent observations based on remotely sensed albedo, the AmeriFlux dataset demonstrated a tight linear relationship between canopy albedo and foliage nitrogen concentration (for forest vegetation: albedo 50.0110.071%N, r250.91; forests, grassland, and maize: albedo50.0210.067%N, r250.80). However, this relationship saturated at the higher nitrogen concentrations displayed by soybean foliage. We developed similar relationships between a foliar parameter used in the two-stream albedo model and foliage nitrogen concentration. These nitrogen-based relationships can serve as the basis for a new approach to land surface albedo modeling that simplifies albedo estimation while providing a link to other important ecosystem processes.

Hollinger, D. [USDA Forest Service; Ollinger, S. V. [University of Hew Hampshire; Richardson, A. D. [University of Hew Hampshire; Martin, M. E. [University of New Hampshire; Meyers, T. P. [NOAA ATDD; Dail, D. B. [University of Maine; Scott, N. A. [Queens University, Kingston, ON, Canada; Arkebauer, T. J. [University of Nebraska, Lincoln; Baldocchi, D. D. [University of California, Berkeley; Clark, K. L. [USDA Forest Service; Curtis, Peter [Ohio State University, The, Columbus; Davis, K. J. [Pennsylvania State University; Desai, Desai Ankur R. [University of Wisconsin, Madison; Dragoni, Danilo [Indiana University; Goulden, M. L. [University of California, Irvine; Gu, Lianhong [ORNL; Katul, G. G. [Duke University; Pallardy, Stephen G. [University of Missouri; Pawu, K. T. [University of California, Davis; Schmid, H. P. [IFU, FZK IMK, Institute of Meteorology & Climate, Garmisch Partenkirchen, Germany; Stoy, P. C. [University of Edinburgh; Suyker, A. E. [University of Nebraska, Lincoln; Verma, Shashi [University of Nebraska

2009-02-01T23:59:59.000Z

235

ARM: Surface Radiation Measurement Quality Control testing, including climatologically configurable limits  

DOE Data Explorer (OSTI)

Surface Radiation Measurement Quality Control testing, including climatologically configurable limits

Gary Hodges; Tom Stoffel; Mark Kutchenreiter; Bev Kay; Aron Habte; Michael Ritsche; Victor Morris; Mary Anderberg

236

A Climatological Measure of Extreme Snowdrift Loading on Building Roofs  

Science Conference Proceedings (OSTI)

A physical model of snow transport and deposition is used in combination with historical climatological data to derive a climatological measure of extreme snowdrift loads on building roofs. The snowdrift metric used relies on hourly wind speed, ...

Arthur T. DeGaetano; Michael J. O'Rourke

2004-01-01T23:59:59.000Z

237

Observations of the ABL Structures over a Heterogeneous Land Surface during IHOP_2002  

Science Conference Proceedings (OSTI)

This study analyzes data collected by aircraft and surface flux sites over a 60-km north–south-oriented aircraft track for five fair-weather days during the International H2O Project (IHOP_2002) to investigate the atmospheric boundary layer (ABL) ...

Song-Lak Kang; Kenneth J. Davis; Margaret LeMone

2007-04-01T23:59:59.000Z

238

Intercomparison and analyses of the climatology of the West African Monsoon in the West African Monsoon Modeling and Evaluation  

E-Print Network (OSTI)

Intercomparison and analyses of the climatology of the West African Monsoon in the West African Monsoon Modeling and Evaluation project (WAMME) first model intercomparison experiment Yongkang Xue This paper briefly presents the West African Monsoon (WAM) Modeling and Evaluation Project (WAMME

Xue, Yongkang

239

A Soil Moisture Climatology of Illinois  

Science Conference Proceedings (OSTI)

Ten years of soil moisture measurements (biweekly from March through September and monthly during winter) within the top 1 m of soil at 17 grass-covered sites across Illinois are analyzed to provide a climatology of soil moisture for this ...

Steven E. Hollinger; Scott A. Isard

1994-05-01T23:59:59.000Z

240

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

Science Conference Proceedings (OSTI)

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

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

2010-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "land-surface climatology project" 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

Ecosystem Feedbacks to Climate Change in California: Development, Testing, and Analysis Using a Coupled Regional Atmosphere and Land Surface Model (WRF3–CLM3.5)  

Science Conference Proceedings (OSTI)

A regional atmosphere model [Weather Research and Forecasting model version 3 (WRF3)] and a land surface model [Community Land Model, version 3.5 (CLM3.5)] were coupled to study the interactions between the atmosphere and possible future ...

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

2011-05-01T23:59:59.000Z

242

Coupling an Advanced Land Surface–Hydrology Model with the Penn State–NCAR MM5 Modeling System. Part II: Preliminary Model Validation  

Science Conference Proceedings (OSTI)

A number of short-term numerical experiments conducted by the Penn State–NCAR fifth-generation Mesoscale Model (MM5) coupled with an advanced land surface model, alongside the simulations coupled with a simple slab model, are verified with ...

Fei Chen; Jimy Dudhia

2001-04-01T23:59:59.000Z

243

The Impact of the Land Surface Physics in the Operational NCEP Eta Model on Simulating the Diurnal Cycle: Evaluation and Testing Using Oklahoma Mesonet Data  

Science Conference Proceedings (OSTI)

On 31 January 1996, the National Centers for Environmental Prediction/Environmental Modeling Center (NCEP/EMC) implemented a state-of-the-art land surface parameterization in the operational Eta Model. The purpose of this study is to evaluate and ...

Curtis H. Marshall; Kenneth C. Crawford; Kenneth E. Mitchell; David J. Stensrud

2003-10-01T23:59:59.000Z

244

Geothermal: Sponsored by OSTI -- Climatology of air quality of...  

Office of Scientific and Technical Information (OSTI)

Climatology of air quality of Long Valley Geothermal Resource Area Geothermal Technologies Legacy Collection HelpFAQ | Site Map | Contact Us | Admin Log On HomeBasic Search...

245

A Global Climatology of Single-Layer and Overlapped Clouds and their Optical Properties Developed Using a New Algorithm Applied to Terra/MODIS Data  

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

Global Climatology of Single-Layer and Overlapped Global Climatology of Single-Layer and Overlapped Clouds and their Optical Properties Developed Using a New Algorithm Applied to Terra/MODIS Data F.-L. Chang and Z. Li Earth System Science Interdisciplinary Center University of Maryland College Park, Maryland Z. Li Department of Meteorology University of Maryland College Park, Maryland Introduction To date, weather satellites are the only tool to measure cloud and climate variables on a global scale, an objective addressed by the International Satellite Cloud Climatology Project (ISCCP) (Rossow and Schiffer 1991; Rossow and Schiffer 1999). However, there is a dearth of information concerning the global climatology of cloud vertical structure and cirrus cloud properties. This is because the often-used

246

Variation and Trends of Landscape Dynamics, Land Surface Phenology and Net Primary Production of the Appalachian Mountains  

Science Conference Proceedings (OSTI)

The gradients of the Appalachian Mountains in elevations and latitudes provide a unique regional perspective of landscape variations in the eastern United States and a section of the southeastern Canada. This study reveals patterns and trends of landscape dynamics, land surface phenology and ecosystem production along the Appalachian Mountains using time series data from Global Inventory Modeling and Mapping Studies (GIMMS) and AVHRR Global Production Efficiency Model (GloPEM) datasets. We analyzed the spatial and temporal patterns of Normalized Difference Vegetation Index (NDVI), length of growing season (LOS) and net primary production (NPP) of selected ecoregions along the Appalachian Mountains regions. We compared the results out of the Appalachian Mountains regions in different spatial contexts including the North America and the Appalachian Trail corridor area. To reveal latitudinal variations we analyzed data and compared the results between 30°N-40°N and 40°N-50°N latitudes. The result revealed significant decreases in annual peak NDVI in the Appalachian Mountains regions. The trend for the Appalachian Mountains regions was -0.0018 (R2=0.55, P<0.0001) NDVI unit decrease per year during 25 years between 1982 and 2006. The LOS had prolonged 0.3 day yr-1 during 25 years over the Appalachian Mountains regions. The NPP increased by 2.68 gC m-2yr-2 in Appalachian Mountains regions from 1981 to 2000. The comparison with the North America reveals the effects of topography and ecosystem compositions of the Appalachian Mountains. The comparison with the Appalachian Trail corridor area provides a regional mega-transect view of the measured variables.

Wang, Yeqiao; Zhao, Jianjun; Zhou, Yuyu; Zhang, Hongyan

2012-12-15T23:59:59.000Z

247

Climatology of Severe Hail in Finland: 1930–2006  

Science Conference Proceedings (OSTI)

A climatology of severe hail (2 cm in diameter or larger) in Finland was constructed by collecting newspaper, storm-spotter, and eyewitness reports. The climatology covered the warm season (1 May–14 September) during the 77-yr period of 1930–...

Jari-Petteri Tuovinen; Ari-Juhani Punkka; Jenni Rauhala; Harri Hohti; David M. Schultz

2009-07-01T23:59:59.000Z

248

Climatology of Hail in China: 1961–2005  

Science Conference Proceedings (OSTI)

A previous hail climatology of China was based upon observations during 1951–60. An effort has been made in this study to update this hail climatology in China with the use of a much longer record of observations from 1961 to 2005. This is made ...

Chunxi Zhang; Qinghong Zhang; Yuqing Wang

2008-03-01T23:59:59.000Z

249

Climatological Features of Cutoff Low Systems in the Northern Hemisphere  

Science Conference Proceedings (OSTI)

This study presents the first multidecadal climatology of cutoff low systems in the Northern Hemisphere. The climatology was constructed by using 41 yr (1958–98) of NCEP–NCAR reanalysis data and identifying cutoff lows by means of an objective ...

Raquel Nieto; Luis Gimeno; Laura de la Torre; Pedro Ribera; David Gallego; Ricardo García-Herrera; José Agustín García; Marcelino Nuñez; Angel Redaño; Jerónimo Lorente

2005-08-01T23:59:59.000Z

250

Heat Budget Calculation in the Convective Boundary Layer on a 4 × 4 Vertical versus Time Grid from Aircraft and Surface Measurements  

Science Conference Proceedings (OSTI)

Aircraft, portable tower, and radiosonde measurements from 4 August 1989 (day 68) of the First International Satellite Land Surface Climatology Project (ISLCP) Field Experiment (FIFE), over fairly flat terrain in Kansas, are used for the ...

John C. Lukas

2000-09-01T23:59:59.000Z

251

Biotic Interactivity between Grazers and Plants: Relationships Contributing to Atmospheric Boundary Layer Dynamics  

Science Conference Proceedings (OSTI)

During 1987 and 1988 First ISLSCP (International Satellite Land Surface Climatology Project) Field Experiment (FIFE) studies conducted in the tallgrass prairie of central Kansas, variations in ungulate grazing intensity produced a patchy spatial ...

M. I. Dyer; C. L. Turner; T. R. Seastedt

1998-04-01T23:59:59.000Z

252

Linking Boundary Layer Circulations and Surface Processes during FIFE 89. Part II: Maintenance of Secondary Circulation  

Science Conference Proceedings (OSTI)

Land–atmosphere interactions are examined for three different synoptic situations during a 21-day period in the course of the First ISLSCP (International Satellite Land Surface Climatology Project) Field Experiment 1989 to better understand the ...

Mickey M-K. Wai; Eric A. Smith

1998-04-01T23:59:59.000Z

253

Surface Temperature Observations from AVHRR in FIFE  

Science Conference Proceedings (OSTI)

Observations of the surface radiometric temperature by the AVHRR sensor on board the NOAA-9 satellite during the First ISLSCP (International Satellite Land Surface Climatology Project) Field Experiment conducted in central Kansas during 1987 are ...

T. J. Schmugge; G. M. Schmidt

1998-04-01T23:59:59.000Z

254

Sensible Heat Flux Estimation over the FIFE Site by Neural Networks  

Science Conference Proceedings (OSTI)

Observations from the First ISLSCP (International Satellite Land Surface Climatology Project) Field Experiment (FIFE) showed that it is difficult to estimate the sensible heat flux from routinely observed environmental parameters. This study, ...

Behzad Abareshi; Peter H. Schuepp

1998-04-01T23:59:59.000Z

255

FIFE Surface Climate and Site-Average Dataset 1987–89  

Science Conference Proceedings (OSTI)

This paper analyzes the First ISLSCP (International Satellite Land Surface Climatology Project) Field Experiment site-average datasets for near-surface meteorology, soil moisture, and temperature; the surface fluxes of radiation, sensible, and ...

Alan K. Betts; John H. Ball

1998-04-01T23:59:59.000Z

256

Climatology of air quality of Long Valley Geothermal Resource Area  

DOE Green Energy (OSTI)

The Long Valley Known Geothermal Resource Area is one of the more promising regions for development of a large-scale geothermal energy center. This report discusses the climatology and air quality of the area. Details are given on the temperatures, temperature inversions, and winds. Estimates are presented for the present air quality and future air quality during and following development of the resource area. Also discussed are project impact from added pollutants, noise, and precipitation augmentation. The major deleterious effects from development of the Long Valley Geothermal Resource Area appear to be due to increased dust loading during and following construction, and noise from production testing and potential well blowouts. Increased pollution from release of hydrogen sulfide and other pollutants associated with hot water geothermal wells seems to present no problems with regard to surrounding vegetation, potential contamination of Lake Crowley, and odor problems in nearby communities. Precipitation augmentation will probably increase the water level of Lake Crowley, at the expense of possible additional fogging and icing of nearby highways.

Peterson, K.R.; Palmer, T.Y.

1977-06-01T23:59:59.000Z

257

Regional Climate Model Projections for the State of Washington  

SciTech Connect

Global climate models do not have sufficient spatial resolution to represent the atmospheric and land surface processes that determine the unique regional heterogeneity of the climate of the State of Washington. If future large-scale weather patterns interact differently with the local terrain and coastlines than current weather patterns, local changes in temperature and precipitation could be quite different from the coarse-scale changes projected by global models. Regional climate models explicitly simulate the interactions between the large-scale weather patterns simulated by a global model and the local terrain. We have performed two 100-year climate simulations using the Weather and Research Forecasting (WRF) model developed at the National Center for Atmospheric Research (NCAR). One simulation is forced by the NCAR Community Climate System Model version 3 (CCSM3) and the second is forced by a simulation of the Max Plank Institute, Hamburg, global model (ECHAM5). The mesoscale simulations produce regional changes in snow cover, cloudiness, and circulation patterns associated with interactions between the large-scale climate change and the regional topography and land-water contrasts. These changes substantially alter the temperature and precipitation trends over the region relative to the global model result or statistical downscaling. To illustrate this effect, we analyze the changes from the current climate (1970-1999) to the mid 21st century (2030-2059). Changes in seasonal-mean temperature, precipitation, and snowpack are presented. Several climatological indices of extreme daily weather are also presented: precipitation intensity, fraction of precipitation occurring in extreme daily events, heat wave frequency, growing season length, and frequency of warm nights. Despite somewhat different changes in seasonal precipitation and temperature from the two regional simulations, consistent results for changes in snowpack and extreme precipitation are found in both simulations.

Salathe, E.; Leung, Lai-Yung R.; Qian, Yun; Zhang, Yongxin

2010-05-05T23:59:59.000Z

258

Synoptic Circulation and Land Surface Influences on Convection in the Midwest U.S. “Corn Belt” during the Summers of 1999 and 2000. Part II: Role of Vegetation Boundaries  

Science Conference Proceedings (OSTI)

In Part I of this observational study inquiring into the relative influences of “top down” synoptic atmospheric conditions and “bottom up” land surface mesoscale conditions in deep convection for the humid lowlands of the Midwest U.S. Central ...

Andrew M. Carleton; David J. Travis; Jimmy O. Adegoke; David L. Arnold; Steve Curran

2008-08-01T23:59:59.000Z

259

The Global Historical Climatology Network: Long-Term Monthly Temperature,  

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

The Global Historical Climatology Network: Long-Term Monthly Temperature, The Global Historical Climatology Network: Long-Term Monthly Temperature, Precipitation, Sea Level Pressure, and Station Pressure Data (1992) (NDP-041) DOI: 10.3334/CDIAC/cli.ndp041 data Data PDF PDF File graphics NDP-041 Temperature Stations graphics NDP-041 Precipitation Stations Please note: the latest version of the Global Historical Climatology Network (GHCN) is available directly from NOAA's National Climatic Data Center. Investigators R. S. Vose, R. L. Schmoyer, P. M. Steurer, T. C. Peterson, R. Heim, T. R. Karl, and J. K. Eischeid This NDP contains monthly temperature, precipitation, sea-level pressure, and station-pressure data for thousands of meteorological stations worldwide. The database was compiled from pre-existing national, regional, and global collections of data as part of the Global Historical Climatology

260

Cloud Climatology for Land Stations Worldwide, 1971-1996 (NDP...  

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

Cloud Climatology for Land Stations Worldwide, 1971-2009 (NDP-026D) PDF Original Documentation File (2003) PDF Documentation Update (2012) data Data (NDP-026D) (Original date of...

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


261

The SPARC Intercomparison of Middle-Atmosphere Climatologies  

Science Conference Proceedings (OSTI)

An updated assessment of uncertainties in “observed” climatological winds and temperatures in the middle atmosphere (over altitudes 10–80 km) is provided by detailed intercomparisons of contemporary and historic datasets. These datasets include ...

William Randel; Petra Udelhofen; Eric Fleming; Marvin Geller; Mel Gelman; Kevin Hamilton; David Karoly; Dave Ortland; Steve Pawson; Richard Swinbank; Fei Wu; Mark Baldwin; Marie-Lise Chanin; Philippe Keckhut; Karin Labitzke; Ellis Remsberg; Adrian Simmons; Dong Wu

2004-03-01T23:59:59.000Z

262

A Global Climatology of Baroclinically Influenced Tropical Cyclogenesis  

Science Conference Proceedings (OSTI)

Tropical cyclogenesis is generally considered to occur in regions devoid of baroclinic structures; however, an appreciable number of tropical cyclones (TCs) form in baroclinic environments each year. A global climatology of these baroclinically ...

Ron McTaggart-Cowan; Thomas J. Galarneau Jr.; Lance F. Bosart; Richard W. Moore; Olivia Martius

2013-06-01T23:59:59.000Z

263

Climatology of the Stratospheric Polar Vortex and Planetary Wave Breaking  

Science Conference Proceedings (OSTI)

We use the distribution of Ertel's potential vorticity (PV) on the 850 K isentropic surface to establish a climatology for the transient evolution of the planetary scale circulation in the Northern Hemisphere winter midstratosphere. We compute PV ...

Mark P. Baldwin; James R. Holton

1988-04-01T23:59:59.000Z

264

Climatology of Tropical Intraseasonal Convective Anomalies: 1979–2002  

Science Conference Proceedings (OSTI)

Tropical intraseasonal convective anomalies (TICA) have a central role in subseasonal changes in the coupled ocean–atmosphere system, but the climatology of TICA events has not been properly documented. This study exploits 24 years of outgoing ...

Charles Jones; Leila M. V. Carvalho; R. Wayne Higgins; Duane E. Waliser; J-K. E. Schemm

2004-02-01T23:59:59.000Z

265

Climatology of Lake-Effect Precipitation Events over Lake Champlain  

Science Conference Proceedings (OSTI)

This study provides the first long-term climatological analysis of lake-effect precipitation events that developed in relation to a small lake (having a surface area of ?1500 km2). The frequency and environmental conditions favorable for Lake ...

Neil F. Laird; Jared Desrochers; Melissa Payer

2009-02-01T23:59:59.000Z

266

Observed Diurnal Cycle Climatology of Planetary Boundary Layer Height  

Science Conference Proceedings (OSTI)

An observational climatology of the planetary boundary layer height (PBLH) diurnal cycle, specific to surface characteristics, is derived from 58 286 fine-resolution soundings collected in 14 major field campaigns around the world. An objective ...

Shuyan Liu; Xin-Zhong Liang

2010-11-01T23:59:59.000Z

267

Climatology of High Wind Events in the Owens Valley, California  

Science Conference Proceedings (OSTI)

The climatology of high wind events in the Owens Valley, California, a deep valley located just east of the southern Sierra Nevada, is described using data from six automated weather stations distributed along the valley axis in combination with ...

Shiyuan Zhong; Ju Li; C. David Whiteman; Xindi Bian; Wenqing Yao

2008-09-01T23:59:59.000Z

268

Simulated Water Table and Soil Moisture Climatology Over North America  

Science Conference Proceedings (OSTI)

We demonstrate the link between two terrestrial water reservoirs: the root-zone soil moisture and the groundwater, and contribute our simulated climatologic water table depth and soil moisture fields over North America to the community. Because ...

Gonzalo Miguez-Macho; Haibin Li; Ying Fan

2008-05-01T23:59:59.000Z

269

Surface Winds from Tropical Pacific Islands—Climatological Statistics  

Science Conference Proceedings (OSTI)

Multidecadal time series of surface wind observations from tropical Pacific islands have been examined in order to investigate the space and time scales of variability. Climatological monthly means and variances are compared with comparable means ...

D. E. Harrison; D. S. Luther

1990-02-01T23:59:59.000Z

270

On Some Issues of United States Tornado Climatology  

Science Conference Proceedings (OSTI)

A continuing problem in dealing with climatology data concerning tornadoes in the United States is the validity of the quantitative information contained in the various available data bases. Two aspects of tornado data are discussed: the F-scale ...

Charles A. Doswell III; Donald W. Burgess

1988-02-01T23:59:59.000Z

271

Climatological Variations in North Atlantic Tropical Cyclone Tracks  

Science Conference Proceedings (OSTI)

This study investigates the relationship between tropical cyclone (TC) tracks and climatological variations in large-scale environmental parameters associated with the TC steering flow. By using the Atlantic Ocean hurricane database for 1950–2010, ...

Angela J. Colbert; Brian J. Soden

2012-01-01T23:59:59.000Z

272

A Persistence Climatology for Interior and Coastal Southern New England  

Science Conference Proceedings (OSTI)

One method of evaluating forecast skill is to compare probability forecasts of temperature and precipitation to a “persistence climatology” (CLIMO) for a given location. In the absence of such data, forecasters at Central Connecticut State ...

Steven B. Newman

1991-03-01T23:59:59.000Z

273

Climatological Aspects of Radiation Fog Occurrence at Albany, New York  

Science Conference Proceedings (OSTI)

We present a detailed investigation of the local radiation fog climatology, carried out in support of our ongoing field program to study radiation fog mechanisms at Albany, New York. At Albany, a distinct ”radiation fog season” is observed during ...

Michael B. Meyer; G. Garland Lala

1990-05-01T23:59:59.000Z

274

On the Climatology of Upper-Layer Clouds  

Science Conference Proceedings (OSTI)

Unique data obtained from a regular aircraft sounding network that operated in the Soviet Union from 1957 through 1963 were used to estimate the potential accuracy of the cirrus cloud cover climatology based on routine ground-based weather ...

Ilia P. Mazin; Svetlana N. Burkovskaya; Elvira T. Ivanova

1993-09-01T23:59:59.000Z

275

Climatology of Diffusion Potential Classes for Minneapolis–St. Paul  

Science Conference Proceedings (OSTI)

This climatological study reports on the potential for atmospheric diffusion at Minneapolis–St. Paul, Minnesota, cities located in the heart of the North American continent. As such, the results can be considered typical of an urban setting ...

Allen B. Johnson; Donald G. Baker

1997-12-01T23:59:59.000Z

276

Explosive Cyclogenesis: A Global Climatology Comparing Multiple Reanalyses  

Science Conference Proceedings (OSTI)

A global climatology for rapid cyclone intensification has been produced from the second NCEP reanalysis (NCEP2), the 25-yr Japanese Reanalysis (JRA-25), and the ECMWF reanalyses over the period 1979–2008. An improved (combined) criterion for ...

John T. Allen; Alexandre B. Pezza; Mitchell T. Black

2010-12-01T23:59:59.000Z

277

A Climatology of Wintertime Barrier Winds off Southeast Greenland  

Science Conference Proceedings (OSTI)

A climatology of barrier winds along the southeastern coast of Greenland is presented based on 20 yr of winter months (1989–2008) from the ECMWF Interim Reanalysis (ERA-Interim). Barrier wind events occur predominantly at two locations: Denmark ...

B. E. Harden; I. A. Renfrew; G. N. Petersen

2011-09-01T23:59:59.000Z

278

Atmospheric Icing Climatologies of Two New England Mountains  

Science Conference Proceedings (OSTI)

The atmospheric icing climatologies of two New England mountaintops with different elevations are compared: Mount Mansfield in northern Vermont and Mount Washington in New Hampshire. Atmospheric icing, as measured with Rosemount ice detectors, is ...

Charles C. Ryerson

1988-11-01T23:59:59.000Z

279

A Climatological Model for 1-min Precipitation Rates  

Science Conference Proceedings (OSTI)

A model for estimating mean monthly total time occurrence for 1-min precipitation rates from monthly climatological variables has been developed. The model has two components: an estimation algorithm for the mean monthly percentage of time in ...

Paul Tattelman; Kevin P. Larson; Andrew J. Mazzella Jr.

1995-05-01T23:59:59.000Z

280

Climatology Models for Extreme Hurricane Winds near the United States  

Science Conference Proceedings (OSTI)

The rarity of severe coastal hurricanes implies that empirical estimates of extreme wind speed return levels will be unreliable. Here climatology models derived from extreme value theory are estimated using data from the best-track [Hurricane ...

Thomas H. Jagger; James B. Elsner

2006-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "land-surface climatology project" 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

A Satellite-derived Climatology of the ITCZ  

Science Conference Proceedings (OSTI)

This paper presents fundamental climatological characteristics of the intertropical convergence zone (ITCZ) in a simple concise manner using the highly reflective cloud (HRC) dataset. This satellite-derived dataset uses both visible and infrared ...

Duane E. Waliser; Catherine Gautier

1993-11-01T23:59:59.000Z

282

Lagrangian Methods for Climatological Analysis of Regional Atmospheric Transport  

Science Conference Proceedings (OSTI)

A quantitative climatological analysis of regional-scale atmospheric transport in Texas is developed using previously described Lagrangian (kinematic) trajectory methods. The trajectories are computed using resolved winds from 1979 to 2001 from ...

Darielle N. Dexheimer; Kenneth P. Bowman

2004-04-01T23:59:59.000Z

283

The Upper Equatorial Indian Ocean. The Climatological Seasonal Cycle  

Science Conference Proceedings (OSTI)

The climatological seasonal cycle of the upper equatorial Indian Ocean is discussed. A summary of the observations is given. Near the surface and below the equatorial thermocline, the observations indicate an intense variability of the equatorial ...

Gilles Reverdin

1987-07-01T23:59:59.000Z

284

A Climatological Perspective of Transient Synoptic Features during NAME 2004  

Science Conference Proceedings (OSTI)

This note provides a first look at a recently developed long-term climatology of transient synoptic features in northern Mexico. Key features investigated include inverted troughs, cutoff lows, cold fronts, and open troughs (westerly short waves)...

Arthur V. Douglas; Phillip J. Englehart

2007-05-01T23:59:59.000Z

285

A 15-Year Climatology of Warm Conveyor Belts  

Science Conference Proceedings (OSTI)

This study presents the first climatology of so-called warm conveyor belts (WCBs), strongly ascending moist airstreams in extratropical cyclones that, on the time scale of 2 days, rise from the boundary layer to the upper troposphere. The ...

Sabine Eckhardt; Andreas Stohl; Heini Wernli; Paul James; Caroline Forster; Nicole Spichtinger

2004-01-01T23:59:59.000Z

286

On the Estimation of Climatological Z–R Relationships  

Science Conference Proceedings (OSTI)

A statistical framework for climatological Z–R parameter estimation is developed and simulation experiments are conducted to examine sampling properties of the estimators. Both parametric and nonparametric models are considered. For parametric ...

Witold F. Krajewski; James A. Smith

1991-10-01T23:59:59.000Z

287

An Approach to Adjusting Climatological Time Series for Discontinuous Inhomogeneities  

Science Conference Proceedings (OSTI)

A method is described whereby climatological time series of temperature and precipitation can be adjusted for station inhomogeneities using station history information. The adjusted data retains its original scale and is not an anomaly series. ...

Thomas R. Karl; Claude N. Williams Jr.

1987-12-01T23:59:59.000Z

288

The Climatological Distribution of Potential Vorticity over the Abyssal Ocean  

Science Conference Proceedings (OSTI)

Climatological maps of the large-scale potential vorticity field Q along isopycnals are diagnosed for the abyssal waters over the global ocean. The inferred patterns of Q vary with density, the basin, and hemisphere. At middepths, the ...

Jane O’Dwyer; Richard G. Williams

1997-11-01T23:59:59.000Z

289

Cloud Liquid Water Path from Satellite-Based Passive Microwave Observations: A New Climatology over the Global Oceans  

Science Conference Proceedings (OSTI)

This work describes a new climatology of cloud liquid water path (LWP), termed the University of Wisconsin (UWisc) climatology, derived from 18 yr of satellite-based passive microwave observations over the global oceans. The climatology is based ...

Christopher W. O’Dell; Frank J. Wentz; Ralf Bennartz

2008-04-01T23:59:59.000Z

290

A Comparison of Satellite and In Situ–Based Sea Surface Temperature Climatologies  

Science Conference Proceedings (OSTI)

The purpose of this study is to present a satellite-derived sea surface temperature (SST) climatology based on Pathfinder Advanced Very High Resolution Radiometer (AVHRR) data and to evaluate it and several other climatologies for their ...

Kenneth S. Casey; Peter Cornillon

1999-06-01T23:59:59.000Z

291

Climatology and Trends of U.S. Surface Humidity and Temperature  

Science Conference Proceedings (OSTI)

Climatological annual and seasonal dewpoint, specific humidity, and relative humidity maps for the United States are presented using hourly data from 188 first-order weather stations for the period 1961–90. Separate climatologies were calculated ...

Dian J. Gaffen; Rebecca J. Ross

1999-03-01T23:59:59.000Z

292

New York City Storm Surges: Climatology and an Analysis of the Wind and Cyclone Evolution  

Science Conference Proceedings (OSTI)

A climatological description (“climatology”) of storm surges and actual flooding (storm tide) events from 1959 to 2007 is presented for the New York City (NYC) harbor. The prevailing meteorological conditions associated with these surges are also ...

Brian A. Colle; Katherine Rojowsky; Frank Buonaito

2010-01-01T23:59:59.000Z

293

A Climatology of the Mesoscale Environment Associated with Heavily Precipitating Events over a Northwestern Mediterranean Area  

Science Conference Proceedings (OSTI)

A climatological approach is developed to characterize the mesoscale environment in which heavily precipitating events (HPEs) grow over a mountainous Mediterranean area. This climatology that is based on three-dimensional variational data ...

Didier Ricard; Véronique Ducrocq; Ludovic Auger

2012-03-01T23:59:59.000Z

294

Climatology of Warm Boundary Layer Clouds at the ARM SGP Site and Their Comparison to Models  

Science Conference Proceedings (OSTI)

A 4-yr climatology (1997–2000) of warm boundary layer cloud properties is developed for the U.S. Department of Energy Atmospheric Radiation Measurement (ARM) Program Southern Great Plains (SGP) site. Parameters in the climatology include cloud ...

Manajit Sengupta; Eugene E. Clothiaux; Thomas P. Ackerman

2004-12-01T23:59:59.000Z

295

Dependence of Large-Scale Precipitation Climatologies on Temporal and Spatial Sampling  

Science Conference Proceedings (OSTI)

Large-scale observed precipitation climatologies are needed for a variety of purposes in the fields of climate and environmental modeling. Although new satellite-derived precipitation estimates offer the prospect of near-global climatologies ...

Mike Hulme; Mark New

1997-05-01T23:59:59.000Z

296

Improving Projected Potential Evapotranspiration Estimates Using National Weather Service Forecasts  

Science Conference Proceedings (OSTI)

In a recent survey conducted by the University of Nebrask's Center for Agricultural Meteorology and Climatology of Agricultural Network (AGNET) users, the results of potential evapotranspiration (ETp) projections (calculated using the Blaney-...

Steven J. Meyer; Kenneth G. Hubbard; Donald A. Wilhite

1988-10-01T23:59:59.000Z

297

African Rainfall Climatology Version 2 for Famine Early Warning Systems  

Science Conference Proceedings (OSTI)

This paper describes a new gridded, daily 29-yr precipitation estimation dataset centered over Africa at 0.1° spatial resolution. Called the African Rainfall Climatology, version 2 (ARC2), it is a revision of the first version of the ARC. ...

Nicholas S. Novella; Wassila M. Thiaw

2013-03-01T23:59:59.000Z

298

Climatology of Superadiabatic Conditions for a Rural Area  

Science Conference Proceedings (OSTI)

Temperature measurements taken over a 6-year period from a 32 m tower are used to study the climatology of low-level superadiabatic conditions in a rural area. Plots of monthly distributions of event commencement times and durations display a ...

E. S. Takle

1983-06-01T23:59:59.000Z

299

An Objective Cyclone Climatology for the Southern Hemisphere  

Science Conference Proceedings (OSTI)

An objective method is developed and used to derive a climatology of centers of cyclonic vorticity for the Southern Hemisphere, based on twice-daily European Centre for Medium-Range Weather Forecasts (ECMWF) 1000-hPa analyses during 1980–86. ...

Mark R. Sinclair

1994-10-01T23:59:59.000Z

300

Climatology of Thunderstorms for North Dakota, 2002–06  

Science Conference Proceedings (OSTI)

Radar and surface thunderstorm data in North Dakota were investigated to obtain the climatology of thunderstorms in the state. A life cycle analysis for the individual storm cells between 2002 and 2006 was carried out, and it was found that June ...

Faizul M. Mohee; Craig Miller

2010-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "land-surface climatology project" 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

Japan Sea Thermohaline Structure and Circulation. Part I: Climatology  

Science Conference Proceedings (OSTI)

In this study, the U.S. Navy’s Generalized Digital Environmental Model (GDEM) climatological temperature and salinity data on a 0.5° × 0.5° grid is used to investigate the seasonal variabilities of the Japan/East Sea (JES) thermohaline structure ...

Peter C. Chu; Jian Lan; Chenwu Fan

2001-01-01T23:59:59.000Z

302

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

303

A Synoptic Climatology and Composite Analysis of the Alberta Clipper  

Science Conference Proceedings (OSTI)

Surface and upper-air analyses from the ECMWF Tropical Ocean Global Atmosphere (TOGA) dataset are used to construct a climatology of 177 Alberta clippers over 15 boreal cold seasons (October–March) from 1986/87 to 2000/01. The Alberta clipper (...

Blaine C. Thomas; Jonathan E. Martin

2007-04-01T23:59:59.000Z

304

A Climatology of Nocturnal Low-Level Jets at Cabauw  

Science Conference Proceedings (OSTI)

A climatology of nocturnal low-level jets (LLJs) is presented for the topographically flat measurement site at Cabauw, the Netherlands. LLJ characteristics are derived from a 7-yr half-hourly database of wind speed profiles, obtained from the 200-...

P. Baas; F. C. Bosveld; H. Klein Baltink; A. A. M. Holtslag

2009-08-01T23:59:59.000Z

305

Project  

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

Exploring the Standard Model Exploring the Standard Model       You've heard a lot about the Standard Model and the pieces are hopefully beginning to fall into place. However, even a thorough understanding of the Standard Model is not the end of the story but the beginning. By exploring the structure and details of the Standard Model we encounter new questions. Why do the most fundamental particles have the particular masses we observe? Why aren't they all symmetric? How is the mass of a particle related to the masses of its constituents? Is there any other way of organizing the Standard Model? The activities in this project will elucidate but not answer our questions. The Standard Model tells us how particles behave but not necessarily why they do so. The conversation is only beginning. . . .

306

How Much Do Different Land Models Matter for Climate Simulation? Part I: Climatology and Variability  

Science Conference Proceedings (OSTI)

An atmospheric general circulation model (AGCM) is coupled to three different land surface schemes (LSSs), both individually and in combination (i.e., the LSSs receive the same AGCM forcing each time step and the averaged upward surface fluxes ...

Jiangfeng Wei; Paul A. Dirmeyer; Zhichang Guo; Li Zhang; Vasubandhu Misra

2010-06-01T23:59:59.000Z

307

Evaluation and Comparison of Noah and Pleim–Xiu Land Surface Models in MM5 Using GÖTE2001 Data: Spatial and Temporal Variations in Near-Surface Air Temperature  

Science Conference Proceedings (OSTI)

In this study, the performance of two advanced land surface models (LSMs; Noah LSM and Pleim–Xiu LSM) coupled with the fifth-generation Pennsylvania State University–National Center for Atmospheric Research Mesoscale Model (MM5), version 3.7.2, ...

J-F. Miao; D. Chen; K. Borne

2007-10-01T23:59:59.000Z

308

Validation of the Coupled NCEP Mesoscale Spectral Model and an Advanced Land Surface Model over the Hawaiian Islands. Part I: Summer Trade Wind Conditions and a Heavy Rainfall Event  

Science Conference Proceedings (OSTI)

Validations of the 10-km operational Regional Spectral Model (RSM) and the coupled Mesoscale Spectral Model (MSM) with an advanced land surface model (LSM) forecasts during a 1-month period from 20 May through 20 June 2002 are performed at three ...

Yongxin Zhang; Yi-Leng Chen; Song-You Hong; Hann-Ming Henry Juang; Kevin Kodama

2005-12-01T23:59:59.000Z

309

Evaluation of Land Surface Models in Reproducing Satellite Derived Leaf Area Index over the High-Latitude Northern Hemisphere. Part II: Earth System Models  

E-Print Network (OSTI)

Abstract: Leaf Area Index (LAI) is a key parameter in the Earth System Models (ESMs) since it strongly affects land-surface boundary conditions and the exchange of matter and energy with the atmosphere. Observations and data products derived from satellite remote sensing are important for the validation and evaluation of ESMs from regional to global scales. Several decades ’ worth of satellite data products are now available at global scale which represents a unique opportunity to contrast observations against model results. The objective of this study is to assess whether ESMs correctly reproduce the spatial variability of LAI when compared with satellite data and to compare the length of the growing season in the different models with the satellite data. To achieve this goal we analyse outputs from 11 coupled carbon-climate models that are based on the set of new global model simulations planned in support of the IPCC Fifth Assessment Report. We focus on the average LAI and the length of the growing season on Northern Hemisphere over the period 1986–2005. Additionally we compare the results with previous analyses (Part I) of

Ro Anav; Guillermo Murray-tortarolo; Pierre Friedlingstein; Stephen Sitch; Shilong Piao; Zaichun Zhu

2013-01-01T23:59:59.000Z

310

A Synthetic Aperture Radar–Based Climatology of Open-Cell Convection over the Northeast Pacific Ocean  

Science Conference Proceedings (OSTI)

This paper presents an 8-yr (1999–2006) climatology of the frequency of open-cell convection over the northeastern Pacific Ocean and the thermodynamic and kinematic environment associated with its development. The climatology is based on ...

Todd D. Sikora; George S. Young; Caren M. Fisher; Matthew D. Stepp

2011-03-01T23:59:59.000Z

311

Development and Analysis of the Systematically Merged Atlantic Regional Temperature and Salinity Climatology For Oceanic Heat Content Estimates  

Science Conference Proceedings (OSTI)

An oceanic climatology to calculate upper ocean thermal structure was developed for application year-round in the North Atlantic Ocean basin. The Systematically Merged Atlantic Regional Temperature and Salinity (SMARTS) Climatology is used in a ...

P. C. Meyers; L. K. Shay; J. K. Brewster

312

Indian Summer Monsoon Precipitation Climatology in a High-Resolution Regional Climate Model: Impacts of Convective Parameterization on Systematic Biases  

Science Conference Proceedings (OSTI)

In an attempt to develop a better simulation of the climatology of monsoon precipitation in climate models, this paper investigates the impacts of different convective closures on systematic biases of an Indian monsoon precipitation climatology ...

P. Mukhopadhyay; S. Taraphdar; B. N. Goswami; K. Krishnakumar

2010-04-01T23:59:59.000Z

313

A Comparison of the Annual Cycle of Two Sea Surface Temperature Climatologies of the World Ocean  

Science Conference Proceedings (OSTI)

A comparison of the annual cycle of two monthly sea surface temperature climatologies for the world ocean is presented. One set of the climatological fields used consist of one-degree objectively analyzed monthly means, based on approximately 1.5 ...

Sydney Levitus

1987-02-01T23:59:59.000Z

314

Impact of Aligning Climatological Day on Gridding Daily Maximum–Minimum Temperature and Precipitation over Canada  

Science Conference Proceedings (OSTI)

On 1 July 1961, the climatological day was redefined to end at 0600 UTC at all principal climate stations in Canada. Prior to that, the climatological day at principal stations ended at 1200 UTC for maximum temperature and precipitation and 0000 ...

Ron F. Hopkinson; Daniel W. McKenney; Ewa J. Milewska; Michael F. Hutchinson; Pia Papadopol; Lucie A. Vincent

2011-08-01T23:59:59.000Z

315

The Seasonal Atmospheric Response to Projected Arctic Sea Ice Loss in the Late Twenty-First Century  

Science Conference Proceedings (OSTI)

The authors investigate the atmospheric response to projected Arctic sea ice loss at the end of the twenty-first century using an atmospheric general circulation model (GCM) coupled to a land surface model. The response was obtained from two 60-...

Clara Deser; Robert Tomas; Michael Alexander; David Lawrence

2010-01-01T23:59:59.000Z

316

Wind shear climatology for large wind turbine generators  

DOE Green Energy (OSTI)

Climatological wind shear analyses relevant to the design and operation of multimegawatt wind turbines are provided. Insight is provided for relating the wind experienced by a rotating blade in a shear flow to the analysis results. A simple analysis of the wind experienced by a rotating blade for three types of wind shear profiles under steady-state conditions is presented in graphical form. Comparisons of the magnitude and frequency of the variations in 1) the wind sensed by a single blade element, 2) the sum, and 3) the difference of the winds sensed by opposite blade elements show strong sensitivity to profile shape. These three items represent forcing functions that can be related to 1) flatwise bending moment, 2) torque on the shaft, and 3) teeter angle. A computer model was constructed to simulate rotational sampling of 10-s sampled winds from a tall tower for three different types of large wind turbines. Time series produced by the model indicated that the forcing functions on a rotating blade vary according to the shear profile encountered during each revolution as opposed to a profile derived from average wind conditions, e.g., hourly average winds. An analysis scheme was developed to establish a climatology of wind shear profiles derived from 10-s sampled winds and hourly average winds measured over a one-year period at several levels on a tall tower. Because of the sensitivity of the forcing function variability to profile shape, the analyses performed and presented are in the form of joint frequency distributions of velocity differences of the the top-to-hub versus the hub-to-bottom portion of disks of rotation for the three turbine configurations.

Elliott, D.L.; Wendell, L.L.; Heflick, S.K.

1982-10-01T23:59:59.000Z

317

Satellite-Derived Surface Radiation Budget over the African Continent. Part II: Climatologies of the Various Components  

Science Conference Proceedings (OSTI)

The temporal and spatial variabilities of the surface radiation budget over the African continent are examined using Meteosat data acquired during 1983–88. Continental maps of land surface albedo, downward solar irradiance, and net radiation are ...

Mamoudou B. Ba; Sharon E. Nicholson; Robert Frouin

2001-01-01T23:59:59.000Z

318

The Influence of Land Use/Land Cover on Climatological Values of the Diurnal Temperature Range  

Science Conference Proceedings (OSTI)

The diurnal temperature range (DTR) at weather observation stations that make up the U.S. Historical Climatology Network was evaluated with respect to the predominant land use/land cover associated with the stations within three radii intervals (...

Kevin P. Gallo; David R. Easterling; Thomas C. Peterson

1996-11-01T23:59:59.000Z

319

Climatology, Persistence, and Their Linear Combination as Standards of Reference in Skill Scores  

Science Conference Proceedings (OSTI)

Skill scores measure the accuracy of the forecasts Of interest relative to the accuracy Of forecasts based on naive forecasting methods, with either climatology or persistence usually playing the role of the naive method. In formulating skill ...

Allan H. Murphy

1992-12-01T23:59:59.000Z

320

The U.S. Historical Climatology Network Monthly Temperature Data, Version 2  

Science Conference Proceedings (OSTI)

In support of climate monitoring and assessments, the National Oceanic and Atmospheric Administration's (NOAA's) National Climatic Data Center has developed an improved version of the U.S. Historical Climatology Network temperature dataset (HCN ...

Matthew J. Menne; Claude N. Williams Jr.; Russell S. Vose

2009-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "land-surface climatology project" 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

The Significance of the 1976 Pacific Climate Shift in the Climatology of Alaska  

Science Conference Proceedings (OSTI)

The 1976 Pacific climate shift is examined, and its manifestations and significance in Alaskan climatology during the last half-century are demonstrated. The Pacific Decadal Oscillation index shifted in 1976 from dominantly negative values for ...

Brian Hartmann; Gerd Wendler

2005-11-01T23:59:59.000Z

322

Development of a Synoptic Climatology for the Northeast Gulf of Alaska  

Science Conference Proceedings (OSTI)

The subjective, sea level pressure-based, synoptic climatologies of Sorkina and Putnins have been specialized for the coastal region of southern Alaska. The results of the subjective typing were compared to the automated correlation technique for ...

J. E. Overland; T. R. Hiester

1980-01-01T23:59:59.000Z

323

An Objective High-Resolution Hail Climatology of the Contiguous United States  

Science Conference Proceedings (OSTI)

The threat of damaging hail from severe thunderstorms affects many communities and industries on a yearly basis, with annual economic losses in excess of $1 billion (U.S. dollars). Past hail climatology has typically relied on the National Oceanic ...

John L. Cintineo; Travis M. Smith; Valliappa Lakshmanan; Harold E. Brooks; Kiel L. Ortega

2012-10-01T23:59:59.000Z

324

Characteristics of Landfalling Tropical Cyclones in the United States and Mexico: Climatology and Interannual Variability  

Science Conference Proceedings (OSTI)

The climatology and interannual variability of landfalling tropical cyclones and their impacts on precipitation in the continental United States and Mexico are examined. The analysis is based on National Hurricane Center 6-hourly tropical cyclone ...

Joshua Larson; Yaping Zhou; R. Wayne Higgins

2005-04-01T23:59:59.000Z

325

A Climatology of Mean Monthly Snowfall for the Conterminous United States: Temporal and Spatial Patterns  

Science Conference Proceedings (OSTI)

Mean monthly snowfall data for 216 stations across the conterminous United States were analyzed to produce a climatology that identifies statistical, spatial and intraseasonal aspects. Geographic variations in the length of the snowfall season ...

John A. Harrington Jr.; Randall S. Cerveny; Kenneth F. Dewey

1987-08-01T23:59:59.000Z

326

An Upper-Air Synoptic Climatology of the Western United States  

Science Conference Proceedings (OSTI)

An automated, year-round synoptic climatology is developed for the western United States from rawinsonde observations from 1979 to 1988. The classification uses thermal, moisture, and flow parameters to characterize seasonal and interannual ...

Robert E. Davis; David R. Walker

1992-12-01T23:59:59.000Z

327

Evaluation of Northern Hemisphere Blocking Climatology in the Global Environment Multiscale Model  

Science Conference Proceedings (OSTI)

The performance of the Global Environmental Multiscale (GEM) model, the Canadian operational numerical model, in reproducing atmospheric low-frequency variability is evaluated in the context of Northern Hemisphere blocking climatology. The ...

Etienne Dunn-Sigouin; Seok-Woo Son; Hai Lin

2013-02-01T23:59:59.000Z

328

A 10-Year Climatology of Northern Hemisphere Tropical Cloud Plumes and Their Composite Flow Patterns  

Science Conference Proceedings (OSTI)

A 10-year cool season climatology of tropical cloud plumes in the Northern Hemisphere was generated by visual inspection of infrared satellite imagery. The sample included 1062 plume events during the months of October to May for the years 1974 ...

Haig Iskenderian

1995-06-01T23:59:59.000Z

329

Extratropical Transition of Southwest Pacific Tropical Cyclones. Part I: Climatology and Mean Structure Changes  

Science Conference Proceedings (OSTI)

A database of tropical cyclone best track and intensity information for the southwest Pacific Ocean basin is used to construct a 28-year climatology for tropical cyclones that move into middle latitudes. Of the nine or so tropical cyclones that ...

Mark R. Sinclair

2002-03-01T23:59:59.000Z

330

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.

331

A Synoptic Climatology of the Bimodal Precipitation Distribution in the Upper Midwest  

Science Conference Proceedings (OSTI)

This paper presents an investigation of the synoptic climatology of the precipitation regime in the Upper Midwest. The annual march of precipitation is characterized by a bimodal distribution, with maxima occurring during the months of June and ...

Michael J. Keables

1989-11-01T23:59:59.000Z

332

Thunderstorms above Frontal Surfaces in Environments without Positive CAPE. Part I: A Climatology  

Science Conference Proceedings (OSTI)

The first of two papers describing thunderstorms that occur above frontal surfaces, frequently in environments without positive convective available potential energy (CAPE), focuses on the climatology of such storms for the conterminous United ...

Bradley R. Colman

1990-05-01T23:59:59.000Z

333

Northern Hemisphere 500-hPa Trough Merger and Fracture: A Climatology and Case Study  

Science Conference Proceedings (OSTI)

The results of an objective climatology of 500hPa trough merger (defined as the amalgamation of two initially separate vorticity maxima) and trough fracture (defined as the splitting of a single vorticity center into two separate vorticity ...

Devin B. Dean; Lance F. Bosart

1996-12-01T23:59:59.000Z

334

Some Climatological Aspects of Satellite-Observed Surface Heating in Kansas  

Science Conference Proceedings (OSTI)

A 6-year(1980–85)set of GOES data for seven sites in Kansas has been analyzed to determine the climatological characteristics of surface heating. The dataset as described, and procedures for automatically screening out cloudy observations are ...

J. D. Tarpley

1988-01-01T23:59:59.000Z

335

Antarctic Sea Ice Climatology, Variability, and Late Twentieth-Century Change in CCSM4  

Science Conference Proceedings (OSTI)

A preindustrial control run and an ensemble of twentieth-century integrations of the Community Climate System Model, version 4 (CCSM4), are evaluated for Antarctic sea ice climatology, modes of variability, trends, and covariance with related ...

Laura Landrum; Marika M. Holland; David P. Schneider; Elizabeth Hunke

2012-07-01T23:59:59.000Z

336

Rewriting the Climatology of the Tropical North Atlantic and Caribbean Sea Atmosphere  

Science Conference Proceedings (OSTI)

The Jordan mean tropical sounding has provided a benchmark reference for representing the climatology of the tropical North Atlantic and Caribbean Sea atmosphere for over 50 years. However, recent observations and studies have suggested that ...

Jason P. Dunion

2011-02-01T23:59:59.000Z

337

The Contribution of Orographically Driven Banded Precipitation to the Rainfall Climatology of a Mediterranean Region  

Science Conference Proceedings (OSTI)

Studies carried out worldwide show that topography influences rainfall climatology. As in most western Mediterranean regions, the mountainous Cévennes–Vivarais area in France regularly experiences extreme precipitation that may lead to devastating ...

Angélique Godart; Sandrine Anquetin; Etienne Leblois; Jean-Dominique Creutin

2011-11-01T23:59:59.000Z

338

Controlling the Proportion of Falsely Rejected Hypotheses when Conducting Multiple Tests with Climatological Data  

Science Conference Proceedings (OSTI)

The analysis of climatological data often involves statistical significance testing at many locations. While the field significance approach determines if a field as a whole is significant, a multiple testing procedure determines which particular ...

Valérie Ventura; Christopher J. Paciorek; James S. Risbey

2004-11-01T23:59:59.000Z

339

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

Science Conference Proceedings (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 from the 40-yr ECMWF Re-...

Larissa E. Back; Christopher S. Bretherton

2009-12-01T23:59:59.000Z

340

A Synoptic Climatology of the Central United States and Associations with Pacific Teleconnection Pattern Frequency  

Science Conference Proceedings (OSTI)

A synoptic climatological weather classification scheme incorporating both surface and upper-air data is developed for the central United States based on an automated two-step cluster analysis. It employs daily NCEP–NCAR reanalysis data over all ...

Jill S. M. Coleman; Jeffrey C. Rogers

2007-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "land-surface climatology project" 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

The Synoptic Climatology of Cool-Season Rainfall in the Central Wheatbelt of Western Australia  

Science Conference Proceedings (OSTI)

Synoptic weather systems form an important part of the physical link between remote large-scale climate drivers and regional rainfall. A synoptic climatology of daily rainfall events is developed for the Central Wheatbelt of southwestern Australia ...

Michael J. Pook; James S. Risbey; Peter C. McIntosh

2012-01-01T23:59:59.000Z

342

Climatology of the SKYHI Troposphere–Stratosphere–Mesosphere General Circulation Model  

Science Conference Proceedings (OSTI)

The long-term mean climatology obtained from integrations conducted with different resolutions of the GFDL “SKYHI” finite-difference general circulation model is examined. A number of improvements that have been made recently in the model are ...

Kevin Hamilton; R. John Wilson; J. D. Mahlman; L. J. Umscheid

1995-01-01T23:59:59.000Z

343

Climatological Analyses of Thunderstorms and Flash Floods in the Baltimore Metropolitan Region  

Science Conference Proceedings (OSTI)

The climatology of thunderstorms and flash floods in the Baltimore, Maryland, metropolitan region is examined through analyses of cloud-to-ground (CG) lightning observations from the National Lightning Detection Network (NLDN) and discharge ...

Alexandros A. Ntelekos; James A. Smith; Witold F. Krajewski

2007-02-01T23:59:59.000Z

344

Uncertainties in Global Ocean Surface Heat Flux Climatologies Derived from Ship Observations  

Science Conference Proceedings (OSTI)

A methodology to define uncertainties associated with ocean surface heat flux calculations has been developed and applied to a global climatology that utilizes a summary of the Comprehensive Ocean–Atmosphere Data Set surface observations. ...

Peter J. Gleckler; Bryan C. Weare

1997-11-01T23:59:59.000Z

345

An Overview of the Global Historical Climatology Network-Daily Database  

Science Conference Proceedings (OSTI)

A database is described that has been designed to fulfill the need for daily climate data over global land areas. The dataset, known as Global Historical Climatology Network (GHCN)-Daily, was developed for a wide variety of potential applications, ...

Matthew J. Menne; Imke Durre; Russell S. Vose; Byron E. Gleason; Tamara G. Houston

2012-07-01T23:59:59.000Z

346

Planetary-Scale Circulations in the Presence of Climatological and Wave-Induced Heating  

Science Conference Proceedings (OSTI)

Interaction between the large-scale circulation and the convective pattern is investigated in a coupled system governed by the linearized primitive equations. Convection is represented in terms of two components of heating:A “climatological ...

Murry L. Salby; Rolando R. Garcia; Harry H. Hendon

1994-08-01T23:59:59.000Z

347

Tropical Cyclone Formation Guidance Using Pregenesis Dvorak Climatology. Part I: Operational Forecasting and Predictive Potential  

Science Conference Proceedings (OSTI)

While there are a variety of modes for tropical cyclone (TC) development, there have been relatively few efforts to systematically catalog both nondeveloping and developing cases. This paper introduces an operationally derived climatology of ...

Joshua H. Cossuth; Richard D. Knabb; Daniel P. Brown; Robert E. Hart

2013-02-01T23:59:59.000Z

348

Climatology of Transport and Diffusion Conditions along the United States Atlantic and Gulf Coasts  

Science Conference Proceedings (OSTI)

A study of the atmospheric transport and diffusion climatology of the United States east and Gulf coasts was conducted to aid in planning and site selection for potentially polluting installations. This paper presents selected results from an ...

Gilbert S. Raynor; Janet V. Hayes

1981-08-01T23:59:59.000Z

349

A Southwest Pacific Tropical Cyclone Climatology and Linkages to the El Niño–Southern Oscillation  

Science Conference Proceedings (OSTI)

The new South Pacific Enhanced Archive for Tropical Cyclones (SPEArTC) dataset provides an opportunity to develop a more complete climatology of tropical cyclones (TCs) in the southwest Pacific. Here, spatial patterns and characteristics of TCs ...

Howard J. Diamond; Andrew M. Lorrey; James A. Renwick

2013-01-01T23:59:59.000Z

350

A Statistical-Topographic Model for Mapping Climatological Precipitation over Mountainous Terrain  

Science Conference Proceedings (OSTI)

The demand for climatological precipitation fields on a regular grid is growing dramatically as ecological and hydrological models become increasingly linked to geographic information systems that spatially represent and manipulate model output. ...

Christopher Daly; Ronald P. Neilson; Donald L. Phillips

1994-02-01T23:59:59.000Z

351

Small-Scale Spatial Gradients in Climatological Precipitation on the Olympic Peninsula  

Science Conference Proceedings (OSTI)

Persistent, 10-km-scale gradients in climatological precipitation tied to topography are documented with a finescale rain and snow gauge network in the Matheny Ridge area of the Olympic Mountains of Washington State. Precipitation totals are 50% ...

Alison M. Anders; Gerard H. Roe; Dale R. Durran; Justin R. Minder

2007-10-01T23:59:59.000Z

352

A Climatology of the Circulation and Water Mass Distribution near the Philippine Coast  

Science Conference Proceedings (OSTI)

This study provides a climatology of the circulation and water mass distribution by using historical data combined with observations from dozens of recent cruises near the Philippine coast. The most striking results are related to the poleward ...

Tangdong Qu; Humio Mitsudera; Toshio Yamagata

1999-07-01T23:59:59.000Z

353

Identification and ERA-15 Climatology of Potential Vorticity Streamers and Cutoffs near the Extratropical Tropopause  

Science Conference Proceedings (OSTI)

A novel approach is introduced to identify potential vorticity (PV) streamers and cutoffs as indicators of Rossby wave breaking near the extratropical tropopause and to compile climatologies of these features on different isentropic surfaces. The ...

Heini Wernli; Michael Sprenger

2007-05-01T23:59:59.000Z

354

Black Sea Mixed Layer Sensitivity to Various Wind and Thermal Forcing Products on Climatological Time Scales  

Science Conference Proceedings (OSTI)

This study describes atmospheric forcing parameters constructed from different global climatologies, applied to the Black Sea, and investigates the sensitivity of Hybrid Coordinate Ocean Model (HYCOM) simulations to these products. Significant ...

A. Birol Kara; Harley E. Hurlburt; Alan J. Wallcraft; Mark A. Bourassa

2005-12-01T23:59:59.000Z

355

Some Features of the Climatology of the Northern Hemisphere Stratosphere Revealed by NMC Upper Atmosphere Analyses  

Science Conference Proceedings (OSTI)

A zonal-mean climatology of the temperature, geostrophic zonal winds and the beat and momentum transports associated with the geostrophic winds has been constructed on the basis of almost four years of routine weekly analyses from the National ...

Kevin Hamilton

1982-12-01T23:59:59.000Z

356

A Planetary Boundary Layer Height Climatology Derived from ECMWF Reanalysis Data  

Science Conference Proceedings (OSTI)

A planetary boundary layer (PBL) height climatology from ECMWF reanalysis data is generated and analyzed. Different methods are first compared to derive PBL heights from atmospheric temperature, pressure, and relative humidity (RH), which mostly ...

Axel von Engeln; João Teixeira

2013-09-01T23:59:59.000Z

357

Simulation and Diagnosis of the Regional Summertime Precipitation Climatology of South America  

Science Conference Proceedings (OSTI)

The regional precipitation climatology of South America during austral summer is studied by means of an R30 general circulation model (GCM). Results from perpetual January experiments, which differ only in their distributions of topography and ...

J. D. Lenters; K. H. Cook

1995-12-01T23:59:59.000Z

358

An Assessment of the Climatology of Florida Hurricane-Induced Tornadoes (HITs): Technology versus Meteorology  

Science Conference Proceedings (OSTI)

The placement of operational Doppler radar at National Weather Service offices in Florida in 1994 and 1995 has produced a distinct climatological discontinuity in archived records of hurricane-induced tornado (HIT) events. During the period of ...

Ernest M. Agee; Alyssa Hendricks

2011-10-01T23:59:59.000Z

359

A Climatological Comparison of Radar and Ground Observations of Hail in Finland  

Science Conference Proceedings (OSTI)

Two approaches to producing a hail climatology for Finland are compared. The first approach is based on 70 yr of hail reports from different sources (newspapers, storm spotters, and other volunteers). The second is derived primarily from radar ...

Elena Saltikoff; Jari-Petteri Tuovinen; Janne Kotro; Timo Kuitunen; Harri Hohti

2010-01-01T23:59:59.000Z

360

Comparison of Synoptic and Climatologically Mapped Sections in the South Pacific Ocean  

Science Conference Proceedings (OSTI)

To understand the extent to which oceanic climate shifts could be detected, a South Pacific climatology has been used to create pseudosections of temperature, salinity, and other tracers along a zonal and meridional lines at 15°S and 90°W, ...

N. L. Bindoff; C. Wunsch

1992-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "land-surface climatology project" 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

Steady Linear Response to Thermal Forcing of an Anomaly Model with an Asymmetric Climatology  

Science Conference Proceedings (OSTI)

An anomaly model linearized around the observed winter climatology is used to study the steady response of the atmosphere to diabatic heating. The model is an R7, nine vertical levels, primitive equations, fully spectral model, derived from the ...

A. Navarra

1990-01-01T23:59:59.000Z

362

A Climatology of Freezing Rain in the Great Lakes Region of North America  

Science Conference Proceedings (OSTI)

A 15-yr climatology of freezing rain surrounding the Great Lakes region of North America has been constructed using data from rawinsondes, surface stations, and gridded reanalyses from the National Centers for Environmental Prediction. This ...

John Cortinas Jr.

2000-10-01T23:59:59.000Z

363

An Updated Climatology of Tropical Cyclone Impacts on the Southwestern United States  

Science Conference Proceedings (OSTI)

A dataset of 167 eastern North Pacific tropical cyclones (TCs) is investigated for potential impacts in the southwestern United States over the period 1989–2009 and evaluated in the context of a 30-yr climatology. The statistically significant ...

Kimberly M. Wood; Elizabeth A. Ritchie

2013-12-01T23:59:59.000Z

364

A 6-yr Climatology of Fronts Affecting Helsinki, Finland, and Their Boundary Layer Structure  

Science Conference Proceedings (OSTI)

A 6-yr climatology of the frequency, characteristics, and boundary layer structure of synoptic-scale fronts in Helsinki, Finland, was created using significant weather charts and observations from a 327-m-tall mast and from the Station for ...

Victoria A. Sinclair

2013-09-01T23:59:59.000Z

365

An Evaluation of Summer Discomfort in the United State Using a Relative Climatological Index  

Science Conference Proceedings (OSTI)

A relative climatological index is developed to evaluate interregional variations in human discomfort and the impacts of weather on a variety of socioeconomic parameters. The “weather stress index” is designed to assess the frequency and ...

Laurence S. Kalkstein; Kathleen M. Valimont

1986-07-01T23:59:59.000Z

366

An updated climatology of tropical cyclone impacts on the southwestern United States  

Science Conference Proceedings (OSTI)

A dataset of 167 eastern North Pacific tropical cyclones (TCs) are investigated for potential impacts in the southwestern United States over the period 1989-2009 and evaluated in the context of a 30-yr climatology. The statistically significant ...

Kimberly M. Wood; Elizabeth A. Ritchie

367

A Climatology of Midlatitude Mesoscale Convective Vortices in the Rapid Update Cycle  

Science Conference Proceedings (OSTI)

Climatological characteristics of mesoscale convective vortices (MCVs) occurring in the state of Oklahoma during the late spring and summer of four years are investigated. The MCV cases are selected based on vortex detection by an objective ...

Eric P. James; Richard H. Johnson

2010-05-01T23:59:59.000Z

368

The Impact of the Appalachian Mountains on Cyclonic Weather Systems. Part I: A Climatology  

Science Conference Proceedings (OSTI)

A climatological study of cold fronts and cyclones crossing the Appalachian Mountains from the west through northwest has been performed. A sample size of 50 fronts and 40 cyclones was derived from the seven winter seasons (December through March)...

Christopher O'Handley; Lance F. Bosart

1996-07-01T23:59:59.000Z

369

Inverse Analysis Adjustment of the SOC Air–Sea Flux Climatology Using Ocean Heat Transport Constraints  

Science Conference Proceedings (OSTI)

Results are presented from a linear inverse analysis of the Southampton Oceanography Centre (SOC) air–sea flux climatology using 10 hydrographic ocean heat transport constraints distributed throughout the Atlantic and North Pacific Oceans. A ...

Jeremy P. Grist; Simon A. Josey

2003-10-01T23:59:59.000Z

370

Toward a Global Climatology of Severe Hailstorms as Estimated by Satellite Passive Microwave Imagers  

Science Conference Proceedings (OSTI)

An 8-yr climatology of storms producing large hail is estimated from satellite measurements using Advanced Microwave Scanning Radiometer for Earth Observing System (AMSR-E). This allows a unique, consistent comparison between regions that cannot ...

Daniel J. Cecil; Clay B. Blankenship

2012-01-01T23:59:59.000Z

371

A Climatological View of the Kuroshio/Oyashio System East of Japan  

Science Conference Proceedings (OSTI)

Time-averaged structure of the Kuroshio/Oyashio system east of Japan was examined using historical hydrographic data. Unlike most of the earlier climatological analyses, the data were averaged along isopycnal rather than pressure surfaces in a ...

Tangdong Qu; Humio Mitsudera; Bo Qiu

2001-09-01T23:59:59.000Z

372

Climatology of Velocity and Temperature Turbulence Statistics Determined from Rawinsonde and ACARS/AMDAR Data  

Science Conference Proceedings (OSTI)

The climatology of the spatial structure functions of velocity and temperature for various altitudes (pressure levels) and latitude bands is constructed from the global rawinsonde network and from Aircraft Communications, Addressing, and ...

Rod Frehlich; Robert Sharman

2010-06-01T23:59:59.000Z

373

Climatological Conditions of Lake-Effect Precipitation Events Associated with the New York State Finger Lakes  

Science Conference Proceedings (OSTI)

A climatological analysis was conducted of the environmental and atmospheric conditions that occurred during 125 identified lake-effect (LE) precipitation events in the New York State Finger Lakes region for the 11 winters (October–March) from ...

Neil Laird; Ryan Sobash; Natasha Hodas

2010-05-01T23:59:59.000Z

374

Storm Following Climatology Of Precipitation Associated with Winter Cyclones Originating Over the Gulf of Mexico  

Science Conference Proceedings (OSTI)

A storm-following climatology was compiled for the precipitation distributions associated with winter cyclones that originate over the Gulf of Mexico and adjacent coastal region. The goal of this research is to investigate the roles of the Gulf ...

Steven Businger; David I. Knapp; Gerald F. Watson

1990-09-01T23:59:59.000Z

375

Development of an ozone climatology for Harris County, Texas  

SciTech Connect

The Houston Regional Monitoring Corporation (HRM) has performed continuous ambient air quality and meteorological monitoring in the Ship Channel area of east Harris County since August 1981. The HRM monitoring network is one of the largest Environmental Protection Agency (EPA) approved Prevention of Significant Deterioration (PSD) monitoring network in the United States operated by an industrial group. As an adjunct to its monitoring. HRM has funded extensive meteorological and statistical analyses of ozone monitoring data in Harris County. One of the goals of these studies was to determine those meteorological conditions responsible for the formation of elevated ozone concentrations in Harris County. The analyses performed included the use of principal component analysis and cluster analysis. These analysis techniques have individually been applied to ozone and air quality research problems. The combined use of these techniques in this analysis, however, is a unique application of these statistical tools to an ozone air quality analysis. As a result of these analyses, a climatology of those episodes conducive to elevated ozone formation in Harris County was developed.

Balentine, H.W.; Carter, J.C. (Radian Corp., Austin, TX (USA)); Preston, J. (Tenneco Polymers, Houston, TX (US))

1987-01-01T23:59:59.000Z

376

Combined Use of Vegetation Density, Friction Velocity, and Solar Elevation to Parameterize the Scalar Roughness for Sensible Heat  

Science Conference Proceedings (OSTI)

Monin-Obukhov similarity was used to calculate sensible heat fluxes (Hc) at an array of up to 20 surface flux measurement sites on five days in 1987 and 1989 during the First ISLSCP (International Satellite Land Surface Climatology Project) Field ...

Russell Qualls; Thomas Hopson

1998-04-01T23:59:59.000Z

377

Monthly Mean Wind Stress and Sverdrup Transports in the North Atlantic: A Comparison of the Hellerman–Rosenstein and Isemer–Hasse Climatologies  

Science Conference Proceedings (OSTI)

The monthly mean wind stress climatology of Hellerman and Rosenstein (HR) is compared with the climatology of Isemer and Hasse (IH), which represents a version of the Bunker atlas (BU) for the North Atlantic based on revised parameterizations. ...

Claus W. Böning; Ralf Döscher; Hans-Jörg Isemer

1991-02-01T23:59:59.000Z

378

Model-Calculated Seasonal Transport Variations through the Florida Straits: A Comparison Using Different Wind-Stress Climatologies  

Science Conference Proceedings (OSTI)

A linear, barotropic model of the North Atlantic at 1° ×1° resolution is employed to investigate the effect of using different wind-stress climatologies on the model response at the Florida Straits. The wind-stress climatologies are those of da ...

Augustus F. Fanning; Richard J. Greatbatch; Arlindo M. Da Silva; Sydney Levitus

1994-01-01T23:59:59.000Z

379

Towards a Wind Energy Climatology at Advanced Turbine Hub-Heights: Preprint  

DOE Green Energy (OSTI)

Measurements of wind characteristics over a wide range of heights up to and above 100 m are useful to: (1) characterize the local and regional wind climate; (2) validate wind resource estimates derived from numerical models; and (3) evaluate changes in wind characteristics and wind shear over the area swept by the blades. Developing wind climatology at advanced turbine hub heights for the United States benefits wind energy development. Tall tower data from Kansas, Indiana, and Minnesota (which have the greatest number of tall towers with measurement data) will be the focus of this paper. Analyses of data from the tall towers will start the process of developing a comprehensive climatology.

Schwartz, M.; Elliott, D.

2005-05-01T23:59:59.000Z

380

Using Normalized Climatological Anomalies to Rank Synoptic-Scale Events Objectively  

Science Conference Proceedings (OSTI)

A method for ranking synoptic-scale events objectively is presented. NCEP 12-h reanalysis fields from 1948 to 2000 are compared to a 30-yr (1961–90) reanalysis climatology. The rarity of an event is the number of standard deviations 1000–200-hPa ...

Robert E. Hart; Richard H. Grumm

2001-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "land-surface climatology project" 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

A Climatology of Cold-Season Nonconvective Wind Events in the Great Lakes Region  

Science Conference Proceedings (OSTI)

A 44-yr climatology of nonconvective wind events (NCWEs) for the Great Lakes region has been created using hourly wind data for 38 first-order weather stations during the months of November through April. The data were analyzed in terms of the ...

Matthew C. Lacke; John A. Knox; John D. Frye; Alan E. Stewart; Joshua D. Durkee; Christopher M. Fuhrmann; Sarah M. Dillingham

2007-12-01T23:59:59.000Z

382

Tornadoes in the New York Metropolitan Region: Climatology and Multiscale Analysis of Two Events  

Science Conference Proceedings (OSTI)

This paper describes the climatology of tornadoes around New York City (NYC) and Long Island (LI), New York, and the structural evolution of two tornadic events that affected NYC on 8 August 2007 and 16 September 2010. Nearly half (18 of 34 events ...

Brian A. Colle; Kelly A. Lombardo; Jeffrey S. Tongue; William Goodman; Nelson Vaz

2012-12-01T23:59:59.000Z

383

Late-Twentieth-Century Climatology and Trends of Surface Humidity and Temperature in China  

Science Conference Proceedings (OSTI)

Climatological surface temperature and humidity variables for China are presented based on 6-hourly data from 196 stations for the period of 1961–90. Seasonal and annual means for daytime, nighttime, and the full day are shown. The seasonal cycle ...

Julian X. L. Wang; Dian J. Gaffen

2001-07-01T23:59:59.000Z

384

Climatology of Ocean Features in the Gulf of Mexico Using Satellite Remote Sensing Data  

Science Conference Proceedings (OSTI)

A climatology of various ocean features in the Gulf of Mexico (GOM) was developed using the combination of satellite remote sensing and in situ data that spanned periods as long as 32 years. Twelve separate statistics were created, some of which ...

Fred M. Vukovich

2007-03-01T23:59:59.000Z

385

A 15-Year Climatology of Northern Hemisphere 500 mb Closed Cyclone and Anticyclone Centers  

Science Conference Proceedings (OSTI)

A 15-year (1963–77) Northern Hemisphere 2 × 5 degree latitude-longitude gridded dataset of 500 mb geopotential heights has been used to construct a climatology of 500 mb closed circulation centers. These centers, defined by at least one closed 30 ...

Gerald D. Bell; Lance F. Bosart

1989-10-01T23:59:59.000Z

386

Wind climatology of Schiphol Andrew Stepek, Xueli Wang and Dirk Wolters  

E-Print Network (OSTI)

Wind climatology of Schiphol Andrew Stepek, Xueli Wang and Dirk Wolters De Bilt, May 2012 #12;2 Contents Summary 2 Introduction 3 Data 3 Hourly wind measurements 3 Yearly averages of wind speed measurements 4 Quality and sources of error 6 Method 7 Trends in wind speed 7 Definition of cross and tail wind

Haak, Hein

387

SAR-BASED WIND CLIMATOLOGY FOR WIND TURBINES Merete Bruun Christiansen(1)  

E-Print Network (OSTI)

SAR-BASED WIND CLIMATOLOGY FOR WIND TURBINES Merete Bruun Christiansen(1) , Charlotte Bay Hasager(1) , Donald Thompson(2) , Lars Boye Hansen(3) (1) Wind Energy Department, Risø National Laboratory, Technical, Denmark ABSTRACT Wind fields extracted from synthetic aperture radar (SAR) imagery are used to analyze

388

Climatological Characteristics of the Intraseasonal Variation of Precipitation over the Indochina Peninsula  

Science Conference Proceedings (OSTI)

With the use of daily rain gauge data observed at 210 stations in the Indochina Peninsula (ICP) for the 26 yr from 1978 to 2003, this paper describes climatological characteristics of 2 types of intraseasonal variations (ISVs): the 30–60-day ...

Satoru Yokoi; Takehiko Satomura; Jun Matsumoto

2007-11-01T23:59:59.000Z

389

Statistical examination of climatological data relevant to global temperature variation. Final report  

SciTech Connect

Advanced statistical procedures have been developed to analyze and model climatological data. Research has focused on the following areas: testing the global temperature series for trend; the effect of initial conditions on autoregressive models for global temperature data; long memory modeling of the carbon dioxide data; and spatial modeling of global temperature data.

Gray, H.L.; Gunst, R.F.; Woodward, W.A.

1998-07-01T23:59:59.000Z

390

A Climatology of Tropospheric Zonal-Mean Water Vapor Fields and Fluxes in Isentropic Coordinates  

Science Conference Proceedings (OSTI)

Based on reanalysis data for the years 1980–2001 from the European Centre for Medium-Range Weather Forecasts (ERA-40 data), a climatology of tropospheric zonal-mean water vapor fields and fluxes in isentropic coordinates is presented. In the ...

Tapio Schneider; Karen L. Smith; Paul A. O’Gorman; Christopher C. Walker

2006-11-01T23:59:59.000Z

391

Climatology of Cyclone Size Characteristics and Their Changes during the Cyclone Life Cycle  

Science Conference Proceedings (OSTI)

Climatology of the atmospheric cyclone sizes and their change over the cyclone life cycle is analyzed on the basis of tracking 57 yr of NCEP–NCAR reanalysis sea level pressure data over the Northern Hemisphere. To quantify the atmospheric cyclone ...

Irina Rudeva; Sergey K. Gulev

2007-07-01T23:59:59.000Z

392

A Climatology of the Warm Season Great Plains Low-Level Jet Using Wind Profiler Observations  

Science Conference Proceedings (OSTI)

Hourly observations from the Wind Profiler Demonstration Network during the warm season months of 1991 and 1992 were used to develop a climatology of the low-level jet (LLJ) over the Great Plains of the central United States. The maximum overall ...

Mark J. Mitchell; Raymond W. Arritt; Ken Labas

1995-09-01T23:59:59.000Z

393

A six-year climatology of fronts affecting Helsinki, Finland and their boundary layer structure  

Science Conference Proceedings (OSTI)

A six-year climatology of the frequency, characteristics, and boundary-layer structure of synoptic-scale fronts in Helsinki, Finland was created using significant weather charts and observations from a 327 m tall mast and from the Station for ...

Victoria A. Sinclair

394

Global 3D-Nephanalysis of Total Cloud Amount: Climatology for 1979  

Science Conference Proceedings (OSTI)

A one-year global total cloud amount climatology has been compiled from the U.S. Air Force's three-dimensional nephanalysis cloud archive. The derived cloud distributions are shown to be reliable and in good agreement with known features of the ...

N. A. Hughes; A. Henderson-Sellers

1985-07-01T23:59:59.000Z

395

A 4-yr Climatology of Pressure Disturbances Using a Barometer Network in Central Illinois  

Science Conference Proceedings (OSTI)

This paper presents a climatology of coherent disturbances detected during 1991–95 by a network of barometers with a diameter of about 50 km located in a very flat terrain centered on the Flatland Atmospheric Observatory in east-central Illinois. ...

S. Grivet-Talocia; F. Einaudi; W. L. Clark; R. D. Dennett; G. D. Nastrom; T. E. VanZandt

1999-07-01T23:59:59.000Z

396

Climatology and Dynamics of the Summer Etesian Winds over the Eastern Mediterranean  

Science Conference Proceedings (OSTI)

The Etesians are persistent northerly winds that prevail over the eastern Mediterranean during summer. A climatology of Etesian outbreaks over the Aegean was compiled with the aid of the 40-yr ECMWF Re-Analysis (ERA-40) dataset and their vertical ...

Evangelos Tyrlis; Jos Lelieveld

2013-11-01T23:59:59.000Z

397

Error Climatology of the 80-Wave Medium-Range Forecast Model  

Science Conference Proceedings (OSTI)

A climatology of the once-daily (0000 UTC) 1000-hPa error fields of the National Meteorological Center's 80-wave Medium-Range Forecast (MRF) model is studied. An analysis of the error field has been conducted over the contiguous United States and ...

David R. Walker; Robert E. Davis

1995-09-01T23:59:59.000Z

398

Middle Atmosphere Climatologies from the Troposphere–Stratosphere Configuration of the UKMO’s Unified Model  

Science Conference Proceedings (OSTI)

A climatology of the middle atmosphere is determined from 11-yr integrations of the U.K. Meteorological Office Unified Model and compared with 18 years of satellite observations and 5 years of data assimilation fields. The model has an upper ...

Neal Butchart; John Austin

1998-09-01T23:59:59.000Z

399

Inverted Troughs and Cyclogenesis over Interior North America: A Limited Regional Climatology and Case Studies  

Science Conference Proceedings (OSTI)

A limited regional climatology of cyclones with and without inverted troughs that form in the Colorado region is presented along with case study results from two major cyclone events in which an inverted trough plays a prominent role in the life ...

Len G. Keshishian; Lance F. Bosart; W. Edward Bracken

1994-04-01T23:59:59.000Z

400

Changes in the European Precipitation Climatologies as Derived by an Ensemble of Regional Models  

Science Conference Proceedings (OSTI)

This paper analyzes the changes in the precipitation climatologies of Europe for the periods 1960–90 and 2070–2100 using a heterogeneous set of regional climate models (RCMs). The authors used the Climatic Research Unit (CRU) database to define a ...

Francisco J. Tapiador; Enrique Sánchez

2008-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "land-surface climatology project" 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

Project information  

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

Project Information Amistad Project (Texas) Collbran Project (Colorado) Colorado River Storage Project Dolores Project (Colorado) Falcon Project (Texas) Provo River Project (Utah)...

402

A climatology of springtime convection systems over the Northwest Gulf of Mexico and adjacent coasts  

E-Print Network (OSTI)

A Springtime (March 15-June 15) climatology of Mesoscale Convective Systems (MCS) has been established on the basis of satellite imagery and radar reflectivities over the Northwest Gulf of Mexico and adjacent coastal areas during 1985-1994. The systems are tracked using hourly to half-hourly GOES-7 enhanced infrared satellite imagery. After tracking the storm's upper level cloud shield, radar reflectivities were used to classify the organization of convection within the MCS. The nine primary classes of convective structure were enhanced stratiform rain, embedded unorganized storms, unorganized storms, organized cells, solid line, symmetric line, asymmetric line, multiple convective bands, and embedded line. An examination was performed of the relationship between the synoptic-scale environment with the structure and evolution of these storms. Particular attention was given to synoptic-scale factors that affect convective organization. Climatological attributes such as diurnal characteristics and average durations were extracted from a documentation of more than 3@O meso-systems. Also, severe weather produced by the MCSs was examined. In addition, wind shear and thermodynamic parameters were analyzed during the initial phases of storm development. Since a climatological study has never been recorded for this region, the analysis will be informative for determining what type of interactions there are between synoptic scale forcing and mesoscale weather features in this area. Comparison with similar climatologies conducted in the Central Plains of the US was made to determine if MCS activity in a semi-tropical location was similar to that in more northern latitudes. Moreover, this radar climatology may be used as a resource in the planning of field experiments or operations concerning mesoscale weather throughout the southern portion of the US.

Hashem, Magda Sami

1996-01-01T23:59:59.000Z

403

The Influence of Boundary Layer Processes on the Diurnal Variation of the Climatological Near-Surface Wind Speed Probability Distribution over Land  

Science Conference Proceedings (OSTI)

Knowledge of the diurnally varying land surface wind speed probability distribution is essential for surface flux estimation and wind power management. Global observations indicate that the surface wind speed probability density function (PDF) is ...

Yanping He; Norman A. McFarlane; Adam H. Monahan

2012-09-01T23:59:59.000Z

404

The Global Historical Climatology Network: Long-term monthly temperature, precipitation, sea level pressure, and station pressure data  

SciTech Connect

Interest in global climate change has risen dramatically during the last several years. In a similar fashion, the number of data sets available to study global change has also increased. Unfortunately, these data sets have been compiled by many different organizations/researchers, making it confusing and time consuming for individual researchers to acquire the best'' data. In response to this rapid growth in the number of global data sets, the Carbon Dioxide Information Analysis Center (CDIAC) and the National Climatic Data Center (NCDC) commenced the Global Historical Climatology Network (GHCN) project. The purpose of this project is to compile an improved global base-line data set of long-term monthly mean temperature, precipitation, sea level pressure, and station pressure for a dense network. of worldwide meteorological stations. Specifically, the GHCN project seeks to consolidate the numerous preexisting national-, regional-, and global-scale data sets into a single global climate data base that can be updated, enhanced, and distributed at regular intervals. The first version of the GHCN data base was completed during the summer of 1992. It contains 6039 temperature, 7533 precipitation, 1883 sea level pressure, and 1873 station pressure stations. All stations have at least 10 years of data, 40% have more than 50 years of data, and 10% have more than 100 years of data. Spatial coverage is good over most of the globe, particularly for the United States and central Europe. In comparison to other major global data sets, dramatic improvements are evident over South America, Africa, and Asia. The GHCN data base is available as a Numeric Data Package (NDP) from CDIAC. The NDP consists of this document and two magnetic tapes that contain machine-readable data files and accompanying retrieval codes. This document describes, in detail, both the GHCN data base and the contents of the magnetic tap

Vose, R.S. (Tennessee Univ., Knoxville, TN (United States). Energy, Environment and Resources Center); Schmoyer, R.L. (Oak Ridge National Lab., TN (United States)); Steurer, P.M.; Peterson, T.C.; Heim, R.; Karl, T.R. (National Climatic Data Center, Asheville, NC (United States)); Eischeid, J.K. (Colorado Univ., Boulder, CO (United States). Cooperative Inst. for Research in Environmental Sciences)

1992-07-01T23:59:59.000Z

405

The Global Historical Climatology Network: Long-term monthly temperature, precipitation, sea level pressure, and station pressure data  

SciTech Connect

Interest in global climate change has risen dramatically during the last several years. In a similar fashion, the number of data sets available to study global change has also increased. Unfortunately, these data sets have been compiled by many different organizations/researchers, making it confusing and time consuming for individual researchers to acquire the ``best`` data. In response to this rapid growth in the number of global data sets, the Carbon Dioxide Information Analysis Center (CDIAC) and the National Climatic Data Center (NCDC) commenced the Global Historical Climatology Network (GHCN) project. The purpose of this project is to compile an improved global base-line data set of long-term monthly mean temperature, precipitation, sea level pressure, and station pressure for a dense network. of worldwide meteorological stations. Specifically, the GHCN project seeks to consolidate the numerous preexisting national-, regional-, and global-scale data sets into a single global climate data base that can be updated, enhanced, and distributed at regular intervals. The first version of the GHCN data base was completed during the summer of 1992. It contains 6039 temperature, 7533 precipitation, 1883 sea level pressure, and 1873 station pressure stations. All stations have at least 10 years of data, 40% have more than 50 years of data, and 10% have more than 100 years of data. Spatial coverage is good over most of the globe, particularly for the United States and central Europe. In comparison to other major global data sets, dramatic improvements are evident over South America, Africa, and Asia. The GHCN data base is available as a Numeric Data Package (NDP) from CDIAC. The NDP consists of this document and two magnetic tapes that contain machine-readable data files and accompanying retrieval codes. This document describes, in detail, both the GHCN data base and the contents of the magnetic tap

Vose, R.S. [Tennessee Univ., Knoxville, TN (United States). Energy, Environment and Resources Center; Schmoyer, R.L. [Oak Ridge National Lab., TN (United States); Steurer, P.M.; Peterson, T.C.; Heim, R.; Karl, T.R. [National Climatic Data Center, Asheville, NC (United States); Eischeid, J.K. [Colorado Univ., Boulder, CO (United States). Cooperative Inst. for Research in Environmental Sciences

1992-07-01T23:59:59.000Z

406

Reproducibility of Seasonal Land Surface Climate  

Science Conference Proceedings (OSTI)

In this study, the sensitivity of the continental seasonal climate to initial conditions is estimated from an ensemble of decadal simulations of an atmospheric general circulation model with the same specifications of radiative forcings and ...

Thomas J. Phillips

2006-02-01T23:59:59.000Z

407

Land Surface Reflectance: A Possible Earth Science  

E-Print Network (OSTI)

are in magenta, water bodies are outlined in white. MODIS Surface Reflectance South Africa From: E. Vermote, UMD correction (low, medium, high) ­ cloud and cloud shadow ­ snow flag ­ land/water flag · Supplemental information ­ Viewing geometry (view and solar zenith and azimuth angles) ­ Geolocation (lat

408

Temperature Trends of the U.S. Historical Climatology Network Based on Satellite-Designated Land Use/Land Cover  

Science Conference Proceedings (OSTI)

The 1221 weather observation stations that compose the U.S. Historical Climatology Network were designated as either urban, suburban, or rural based on data from the Defense Meteorological Satellite Program Operational Linescan System (OLS). The ...

Kevin P. Gallo; Timothy W. Owen; David R. Easterling; Paul F. Jamason

1999-05-01T23:59:59.000Z

409

A Simulated Climatology of Asian Dust Aerosol and Its Trans-Pacific Transport. Part I: Mean Climate and Validation  

Science Conference Proceedings (OSTI)

The Northern Aerosol Regional Climate Model (NARCM) was used to construct a 44-yr climatology of spring Asian dust aerosol emission, column loading, deposition, trans-Pacific transport routes, and budgets during 1960–2003. Comparisons with ...

T. L. Zhao; S. L. Gong; X. Y. Zhang; J-P. Blanchet; I. G. McKendry; Z. J. Zhou

2006-01-01T23:59:59.000Z

410

New Insights into the Ocean Heat Budget Closure Problem from Analysis of the SOC Air–Sea Flux Climatology  

Science Conference Proceedings (OSTI)

Results from an analysis of the Southampton Oceanography Centre (SOC) global air–sea heat flux climatology, which has been calculated using in situ weather reports from voluntary observing ships covering the period 1980–93, are presented. ...

Simon A. Josey; Elizabeth C. Kent; Peter K. Taylor

1999-09-01T23:59:59.000Z

411

Surface Heat Balance in the Equatorial Pacific Ocean: Climatology and the Warming Event of 1994–95  

Science Conference Proceedings (OSTI)

The surface heat budget in the equatorial Pacific Ocean was investigated through ocean model simulations, both the climatological cycle and the case of the 1994–95 warm event. The dominant processes governing the seasonal cycle of sea surface ...

Anna Borovikov; Michele M. Rienecker; Paul S. Schopf

2001-06-01T23:59:59.000Z

412

A Climatological Monsoon Break in Rainfall over Indochina—A Singularity in the Seasonal March of the Asian Summer Monsoon  

Science Conference Proceedings (OSTI)

This study investigated the climatological pentad mean annual cycle of rainfall in Thailand and the associated atmospheric circulation fields. The data used included two different data of rainfall: rain gauge data for Thailand from the Thai ...

Hiroshi G. Takahashi; Tetsuzo Yasunari

2006-04-01T23:59:59.000Z

413

Climatology of Surface Meteorology, Surface Fluxes, Cloud Fraction, and Radiative Forcing over the Southeast Pacific from Buoy Observations  

Science Conference Proceedings (OSTI)

A 5-yr climatology of the meteorology, including boundary layer cloudiness, for the southeast Pacific region is presented using observations from a buoy located at 20°S, 85°W. The sea surface temperature and surface air temperature exhibit a ...

Virendra P. Ghate; Bruce A. Albrecht; Christopher W. Fairall; Robert A. Weller

2009-10-01T23:59:59.000Z

414

Urban Modification of Thunderstorms: An Observational Storm Climatology and Model Case Study for the Indianapolis Urban Region  

Science Conference Proceedings (OSTI)

A radar-based climatology of 91 unique summertime (May 2000–August 2009) thunderstorm cases was examined over the Indianapolis, Indiana, urban area. The study hypothesis is that urban regions alter the intensity and composition/structure of ...

Dev Niyogi; Patrick Pyle; Ming Lei; S. Pal Arya; Chandra M. Kishtawal; Marshall Shepherd; Fei Chen; Brian Wolfe

2011-05-01T23:59:59.000Z

415

The Climatology of Cyclones and Anticyclones over North America and Surrounding Ocean Environs for January and July, 1950–77  

Science Conference Proceedings (OSTI)

The climatology. of cyclones and anticyclones is studied using a 2° latitude/longitude grid spanning North America and surrounding ocean environs for January and July 1950–77. In addition to determining total area statistics, areas distributions ...

K. M. Zishka; P. J. Smith

1980-04-01T23:59:59.000Z

416

A Modeling Study of the Climatological Current Field and the Trajectories of Upwelled Particles in the East Australian Current  

Science Conference Proceedings (OSTI)

The climatological current field off the coast of New South Wales, Australia, is investigated using results from a field experiment and a diagnostic, numerical modeling study. In particular, the flow dynamics are examined near Smoky Cape (30°55?S)...

Moninya Roughan; Peter R. Oke; Jason H. Middleton

2003-12-01T23:59:59.000Z

417

Shortwave Radiation Budget of the Southern Hemisphere Using ISCCP C2 and NCEP–NCAR Climatological Data  

Science Conference Proceedings (OSTI)

The seasonal shortwave radiation budget at the surface of the Southern Hemisphere was estimated, for 10° latitudinal zones, using a radiative transfer model with long-term mean monthly climatological data from the International Satellite Cloud ...

N. Hatzianastassiou; I. Vardavas

2001-11-01T23:59:59.000Z

418

Seasonal Variation of Baroclinic Geostrophic Heat Transport: Is It Resolved by Existing Climatologies of the Atlantic Ocean?  

Science Conference Proceedings (OSTI)

Seasonal cycles of baroclinic geostrophic heat transport are systematically computed between 30°S and 40°N in the Atlantic from several hydrographic climatologies. The intercomparison of the cycles reveals very significant differences in both ...

S. Wacongne; L. Crosnier

2002-01-01T23:59:59.000Z

419

A Climatology of Significant Winter-Type Weather Events in the Contiguous United States, 1982–94  

Science Conference Proceedings (OSTI)

A dataset of all significant winter-type weather events reported in Storm Data within the contiguous United States from 1982 through 1994 has been compiled. Statistical analysis of this dataset is used to determine climatological frequencies of ...

Michael L. Branick

1997-06-01T23:59:59.000Z

420

Wind Field Climatology, Changes, and Extremes in the Chukchi–Beaufort Seas and Alaska North Slope during 1979–2009  

Science Conference Proceedings (OSTI)

Wind field climatology, changes, and extremes at ~32-km resolution were analyzed for the Chukchi–Beaufort Seas and Alaska North Slope region using 3-hourly North American Regional Reanalysis (NARR) from 1979 to 2009. The monthly average wind ...

Steve T. Stegall; Jing Zhang

2012-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "land-surface climatology project" 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 Climatology of Gravity Waves and Other Coherent Disturbances at the Boulder Atmospheric Observatory during March–April 1984  

Science Conference Proceedings (OSTI)

We present a climatological study of gravity waves and other coherent disturbances at the Boulder Atmospheric Observatory, during the period mid-March-mid-April 1984. The data were collected by a network of microbarographs, and by sensors on the ...

F. Einaudi; A. J. Bedard Jr.; J. J. Finnigan

1989-02-01T23:59:59.000Z

422

Trend Estimation and Regression Analysis in Climatological Time Series: An Application of Structural Time Series Models and the Kalman Filter  

Science Conference Proceedings (OSTI)

The detection of trends in climatological data has become central to the discussion on climate change due to the enhanced greenhouse effect. To prove detection, a method is needed (i) to make inferences on significant rises or declines in trends, ...

H. Visser; J. Molenaar

1995-05-01T23:59:59.000Z

423

Observations of Surface Forcing from the Subduction Experiment: A Comparison with Global Model Products and Climatological Datasets  

Science Conference Proceedings (OSTI)

Reliable estimates of the exchange of heat, moisture, and momentum across the air–sea interface are essential in assessing the local “representativeness” of the surface forcing fields depicted by global model and climatological datasets. The ...

K. A. Moyer; R. A. Weller

1997-11-01T23:59:59.000Z

424

C-Band Attenuation by Tropical Rainfall in Darwin, Australia, Using Climatologically Tuned Ze-R Relations  

Science Conference Proceedings (OSTI)

The probability matching method (PMM) is used as a basis for estimating attenuation in tropical rains near Darwin, Australia. PMM provides a climatological relationship between measured radar reflectivity and rain rate, which includes the effects ...

David Atlas; Daniel Rosenfeld; David B. Wolff

1993-02-01T23:59:59.000Z

425

Remote Sensing of Atmospheric Aerosols and Trace Gases by Means of Multifilter Rotating Shadowband Radiometer. Part II: Climatological Applications  

Science Conference Proceedings (OSTI)

Measurements from ground-based sun photometer networks can be used both to provide ground-truth validation of satellite aerosol retrievals and to produce a land-based aerosol climatology that is complementary to satellite retrievals that are ...

Mikhail D. Alexandrov; Andrew A. Lacis; Barbara E. Carlson; Brian Cairns

2002-02-01T23:59:59.000Z

426

Climatology and Interannual Variation of the East Asian Winter Monsoon: Results from the 1979–95 NCEP/NCAR Reanalysis  

Science Conference Proceedings (OSTI)

This paper presents the climatology and interannual variation of the East Asian winter monsoon based on the 1979–95 National Centers for Environmental Prediction/National Center for Atmospheric Research reanalysis. In addition to documenting the ...

Yi Zhang; Kenneth R. Sperber; James S. Boyle

1997-10-01T23:59:59.000Z

427

A Gridded Climatology of Clouds over Land (1971-1996) and Ocean (1954-2008)  

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

A Gridded Climatology of Clouds over Land (1971-1996) and Ocean (1954-2008) A Gridded Climatology of Clouds over Land (1971-1996) and Ocean (1954-2008) from Surface Observations Worldwide (NDP-026E)* PDF PDF File data Data (NDP-026E) Date of Publication Original date of publication: December 2007. *Updated August, 2010: This page and the global cloudiness dataset and documentation were updated to reflect an additional 11 years (through 2008) of ocean data added by the investigators in December, 2009. Also, two new data directories (cat_55-70 and cat_71-82) were added containing the updated data and additional ancillary files were added to the directory: ancillary_ocean_files. Please see the new APPENDIX U in ndp026e.pdf containing information on this update. The recommended citation reflecting the updating of this database is:

428

Uncertainties in climatological tropical humidity profiles: Some implications for estimating the greenhouse effect  

SciTech Connect

The vertical profile of water vapor, the principal infrared-absorbing gas in the atmosphere, is an important factor in determining the energy balance of the climate system. This study examines uncertainties in calculating a climatological humidity profile: specifically one derived from radiosonde data representative of the moist and highly convective region over the western tropical Pacific Ocean. Uncertainties in the humidity data are large in conditions of low temperature or low humidity in the mid- and upper troposphere. Results derived from a single United States station (Koror) and from an average of four United States-operated stations (all near the equator west of the date line) yield nearly identical results. No humidity measurements are reported in fully the upper third of the troposphere. The implications of these uncertainties for determining the climatological humidity profile are quantitatively assessed by bracketing the range of plausible assumptions for unreported humidity to produce extreme estimates of the climatological profile. These profiles, together with the observed climatological temperature profile, are used as input to a radiative transfer model to ascertain the uncertainty in clear-sky outgoing infrared radiance due to water vapor uncertainties. The radiance uncertainty is shown to be comparable in magnitude to the purely radiative response of the tropical atmosphere to doubling carbon dioxide. The uncertainty associated with unmeasured upper-tropospheric humidity is approximately equal to that arising from incompletely measured midtropospheric humidity. Clear-sky radiative uncertainties, however, are modest relative to the uncertainty associated with variations of infrared absorption due to clouds, as demonstrated by introducing citrus ice particles into the radiative transfer calculations.

Gutzler, D.S. (Atmospheric and Environmental Research, Inc., Cambridge, MA (United States))

1993-05-01T23:59:59.000Z

429

UDC 651.511.32:551.511.6:651.657 A CLIMATOLOGY OF EPSILON (ATMOSPHERIC DISSIPATION)  

E-Print Network (OSTI)

Kolmogorov’s structure functions for the longitudinal and transverse components of locally homogeneous isotropic turbulence are combined vectorially to obtain an expression which permits the evaluation of E (atmospheric dissipation rate) from climatological data. This is used to derive climatological patterns of e in the free atmosphere from Crutcher’s upper wind statistics of the Northern Hemisphere. The latter are combined with Kung’s boundarylayer values to estimate the distribution of total atmospheric dissipation over the Northern Hemisphere. I. EPSILON AS A FUNCTION OF CLIMATOLOGICAL PARAMETERS In a recent review of the methods of evaluating e (the rate of kinetic energy dissipation in the atmosphere), it appeared that it could be determined from wind variability data. The theory for such an eva1.uation is provided by Kolmogorov’s (1941a) second hypothesis of similarity of locally homogeneous isotropic turbulence. In such a field of turbulence and with the z axis along the mean vector wind, this gives for the wind components at points 1 and 2 a distance x apart and

Hugh W. Ellsaesser

1969-01-01T23:59:59.000Z

430

Potential bias of model projected greenhouse warming in irrigated regions  

SciTech Connect

Atmospheric general circulation models (GCMs) used to project climate responses to increased CO{sub 2} generally omit irrigation of agricultural land. Using the NCAR CAM3 GCM coupled to a slab-ocean model, we find that inclusion of an extreme irrigation scenario has a small effect on the simulated temperature and precipitation response to doubled CO{sub 2} in most regions, but reduced warming by as much as 1 C in some agricultural regions, such as Europe and India. This interaction between CO{sub 2} and irrigation occurs in cases where agriculture is a major fraction of the land surface and where, in the absence of irrigation, soil moisture declines are projected to provide a positive feedback to temperature change. The reduction of warming is less than 25% of the temperature increase modeled for doubled CO{sub 2} in most regions; thus greenhouse warming will still be dominant. However, the results indicate that land use interactions may be an important component of climate change uncertainty in some agricultural regions. While irrigated lands comprise only {approx}2% of the land surface, they contribute over 40% of global food production. Climate changes in these regions are therefore particularly important to society despite their relatively small contribution to average global climate.

Lobell, D; Bala, G; Bonfils, C; Duffy, P

2006-04-27T23:59:59.000Z

431

A CLIMATOLOGICAL ANALYSIS OF TWO YEARS OF ROUTINE TRANSOSONDE FLIGHTS FROM JAPAN  

E-Print Network (OSTI)

A climatological analysis is made of Navy-sponsored 300-mb. and 250-mb. constant-level balloon (transosonde) flights launched from Iwakuni, Japan, between September 1957 and April 1959. Since the transosonde naturally provides information in a Lagrangian frame of reference, treated are the trajectories and trajectory dispersion, the magnitudes and periodicities of the velocity and ageostrophic velocity components derived from the trajectories, and the separation between pairs of transosondes as a function of time after their release. In addition to the research benefits, the usefulness of transosondes in providing routine upper-wind data over the oceans is pointed out.

James E. Caskey; J. K. Angell; Us. Wenther Bureau

1957-01-01T23:59:59.000Z

432

Representing Twentieth-Century Space–Time Climate Variability. Part I: Development of a 1961–90 Mean Monthly Terrestrial Climatology  

Science Conference Proceedings (OSTI)

The construction of a 0.5° lat × 0.5° long surface climatology of global land areas, excluding Antarctica, is described. The climatology represents the period 1961–90 and comprises a suite of nine variables: precipitation, wet-day frequency, mean ...

Mark New; Mike Hulme; Phil Jones

1999-03-01T23:59:59.000Z

433

Warm conveyor belts in the ERA-Interim data set (1979-2010). Part I: Climatology and potential vorticity evolution.  

Science Conference Proceedings (OSTI)

A global climatology of warm conveyor belts (WCBs) is presented for the years 1979-2010, based upon trajectories calculated with ERA-Interim reanalyses. WCB trajectories are identified as strongly ascending air parcels (600 hPa in 2 days) near ...

Erica Madonna; Heini Wernli; Hanna Joos; Olivia Martius

434

A 10-year climatology of solar radiation for the Great Barrier Reef: implications for recent mass coral bleaching events  

Science Conference Proceedings (OSTI)

A 10-year solar radiation climatology is developed for the Great Barrier Reef region using data from the Geostationary Meteorological Satellite (GMS). The method uses a look-up table based on the STREAMER radiative transfer model for a tropical atmosphere. ...

Itsara Masiri; Manuel Nunez; Evan Weller

2008-08-01T23:59:59.000Z

435

A Five-Year Climatology of Elevated Severe Convective Storms in the United States East of the Rocky Mountains  

Science Conference Proceedings (OSTI)

A 5-yr climatology of elevated severe convective storms was constructed for 1983–87 east of the Rocky Mountains. Potential cases were selected by finding severe storm reports on the cold side of surface fronts. Of the 1826 days during the 5-yr ...

Katherine L. Horgan; David M. Schultz; John E. Hales Jr.; Stephen F. Corfidi; Robert H. Johns

2007-10-01T23:59:59.000Z

436

A Climatology of Warm-Season Cloud Patterns over East Asia Based on GMS Infrared Brightness Temperature Observations  

Science Conference Proceedings (OSTI)

In the present study, hourly infrared (IR) brightness temperatures observed by the Geostationary Meteorological Satellite (GMS) over the region 20°–40°N, 95°–145°E in May–August 1998–2001 are used to compile a climatology of warm-season cloud/...

Chung-Chieh Wang; George Tai-Jen Chen; Richard E. Carbone

2004-07-01T23:59:59.000Z

437

Utility of Radiosonde Wind Data in Representing Climatological Variations of Tropospheric Temperature and Baroclinicity in the Western Tropical Pacific  

Science Conference Proceedings (OSTI)

The utility of the thermal wind equation (TWE) in relating tropospheric (850–300 hPa) wind and temperature on climatological time scales is assessed, based on data from 59 radiosonde stations in the western tropical Pacific during 1979–2004. ...

Robert J. Allen; Steven C. Sherwood

2007-11-01T23:59:59.000Z

438

Climatological Diurnal Cycles in Clear-Sky Brightness Temperatures from the High-Resolution Infrared Radiation Sounder (HIRS)  

Science Conference Proceedings (OSTI)

A climatology of the diurnal cycles of HIRS clear-sky brightness temperatures was developed based on measurements over the period 2002–07. This was done by fitting a Fourier series to monthly gridded brightness temperatures of HIRS channels 1–12. ...

Anders V. Lindfors; Ian A. Mackenzie; Simon F. B. Tett; Lei Shi

2011-10-01T23:59:59.000Z

439

Simulations of the Climatological Wind Field in the Baltic Sea Area Using a Mesoscale Higher-Order Closure Model  

Science Conference Proceedings (OSTI)

A three-dimensional mesoscale numerical model is utilized to investigate the climatological wind field over the Baltic Sea. To cover all synoptic and boundary layer conditions, a large number of model runs have to be made. Since this type of ...

Stefan Sandström

1997-11-01T23:59:59.000Z

440

Connecting Subseasonal Movements of the Winter Mean Ridge in Western North America to Inversion Climatology in Cache Valley, Utah  

Science Conference Proceedings (OSTI)

A 10-yr record of PM2.5 (particulate matter of aerodynamic diameter ? 2.5 ?m), collected in Cache Valley near downtown Logan, Utah, reveals a strong peak in the PM2.5 concentration climatology that is tightly localized in mid-January. The cause of ...

Shih-Yu Wang; Robert R. Gillies; Randy Martin; Robert E. Davies; Marty R. Booth

2012-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "land-surface climatology project" 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

North American Climate in CMIP5 Experiments. Part I: Evaluation of Historical Simulations of Continental and Regional Climatology  

Science Conference Proceedings (OSTI)

This is the first part of a three-part paper on North American climate in CMIP5 that evaluates the historical simulations of continental and regional climatology with a focus on a core set of seventeen models. We evaluate the models for a set of ...

Justin Sheffield; Andrew Barrett; Brian Colle; D. Nelun Fernando; Rong Fu; Kerrie L. Geil; Qi Hu; Jim Kinter; Sanjiv Kumar; Baird Langenbrunner; Kelly Lombardo; Lindsey N. Long; Eric Maloney; Annarita Mariotti; Joyce E. Meyerson; Kingtse C. Mo; J. David Neelin; Sumant Nigam; Zaitao Pan; Tong Ren; Alfredo Ruiz-Barradas; Yolande L. Serra; Anji Seth; Jeanne M. Thibeault; Julienne C. Stroeve; Ze Yang; Lei Yin

442

Global Monitoring of Net Solar Irradiance at the Ocean Surface: Climatological Variability and the 1982–1983 El Niño  

Science Conference Proceedings (OSTI)

A new method has been used to generate the first satellite-based long-term climatology of surface solar irradiance over the world oceans. These monthly mean data cover the period November 1978 through October 1985 on a global, 9° latitude-...

Beth Chertock; Robert Frouin; Richard C. J. Somerville

1991-06-01T23:59:59.000Z

443

An Initial Intercomparison of Atmospheric and Oceanic Climatology for the ICE-5G and ICE-4G Models of LGM Paleotopography  

Science Conference Proceedings (OSTI)

This paper investigates the impact of the new ICE-5G paleotopography dataset for Last Glacial Maximum (LGM) conditions on a coupled model simulation of the thermal and dynamical state of the glacial atmosphere and on both land surface and sea ...

F. Justino; A. Timmermann; U. Merkel; W. R. Peltier

2006-01-01T23:59:59.000Z

444

Project Title  

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

Chart: project timeline - Project Milestones - Budget - Bibliography * Thank you 29 30 Organization Chart * Project team: Purdue University - Dr. Brenda B. Bowen: PI, student...

445

Spatial and Temporal Variation of Precipitation in Greece and Surrounding Regions Based on Global Precipitation Climatology Project Data  

Science Conference Proceedings (OSTI)

In this study, the spatial and temporal distribution of precipitation in the broader Greek area is investigated for the 26-yr period 1979–2004 by using monthly mean satellite-based data, with complete spatial coverage, taken from the Global ...

N. Hatzianastassiou; B. Katsoulis; J. Pnevmatikos; V. Antakis

2008-03-01T23:59:59.000Z

446

Downscaling and Bias Correcting a Cold Season Precipitation Climatology over Coastal Southern British Columbia Using the Regional Atmospheric Modeling System (RAMS)  

Science Conference Proceedings (OSTI)

Thirty years of the North American Regional Reanalysis (NARR) are dynamically downscaled to an 8-km grid spacing using the Regional Atmospheric Modeling System (RAMS) to generate a climatology of glacier winter accumulation over the southern ...

B. Ainslie; P. L. Jackson

2010-05-01T23:59:59.000Z

447

The Vertical Profile of Wind and Temperature in Cyclones and Anticyclones over the Eastern Two-Thirds of the United States: A Climatology  

Science Conference Proceedings (OSTI)

A climatological analysis, based upon operational surface and upper-air data from 1957 to 1994, of the wind and temperature profiles composited with respect to each quadrant of surface cyclones and anticyclones, is presented for the eastern two-...

Howard B. Bluestein; Peter C. Banacos

2002-03-01T23:59:59.000Z

448

The Physical Properties of the Atmosphere in the New Hadley Centre Global Environmental Model (HadGEM1). Part I: Model Description and Global Climatology  

Science Conference Proceedings (OSTI)

The atmospheric component of the new Hadley Centre Global Environmental Model (HadGEM1) is described and an assessment of its mean climatology presented. HadGEM1 includes substantially improved representations of physical processes, increased ...

G. M. Martin; M. A. Ringer; V. D. Pope; A. Jones; C. Dearden; T. J. Hinton

2006-04-01T23:59:59.000Z

449

Investigation of the Summer Climate of the Contiguous United States and Mexico Using the Regional Atmospheric Modeling System (RAMS). Part I: Model Climatology (1950–2002)  

Science Conference Proceedings (OSTI)

Fifty-three years of the NCEP–NCAR Reanalysis I are dynamically downscaled using the Regional Atmospheric Modeling System (RAMS) to generate a regional climate model (RCM) climatology of the contiguous United States and Mexico. Data from the RAMS ...

Christopher L. Castro; Roger A. Pielke Sr.; Jimmy O. Adegoke

2007-08-01T23:59:59.000Z

450

A 6-Yr Climatology of Vertical Mean and Shear Components of Kinetic Energy for the Australian–South Pacific Jet Stream  

Science Conference Proceedings (OSTI)

The climatology of the kinetic energy associated with the subtropical jet over the Australian–South Pacific region is investigated for a 6-yr period, January 1985–December 1990, using monthly mean data. The total kinetic energy (TKE) is ...

Matthew D. Eastin; Dayton G. Vincent

1998-02-01T23:59:59.000Z

451

A 3-Year Climatology of Cloud and Radiative Properties Derived from GOES-8 Data Over the Southern Great Plains  

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

3-Year Climatology of Cloud and Radiative Properties 3-Year Climatology of Cloud and Radiative Properties Derived from GOES-8 Data Over the Southern Great Plains M. M. Khaiyer, A. D. Rapp, D. R. Doelling, and M. L. Nordeen Analytical Service and Materials, Inc. Hampton, Virginia P. Minnis, W. L. Smith, Jr., and L. Nguyen Atmospheric Sciences Division National Aeronautics and Space Administration Langley Research Center Hampton, Virginia Introduction While the various instruments maintained at the Atmospheric Radiation Measurement (ARM) Program Southern Great Plains (SGP) Central Facility (CF) provide detailed cloud and radiation measurements for a small area, satellite cloud property retrievals provide a means of examining the large-scale properties of the surrounding region over an extended period of time. Seasonal and inter-annual

452

Project Accounts  

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

» Project Accounts » Project Accounts Project Accounts Overview Project accounts are designed to facilitate collaborative computing by allowing multiple users to use the same account. All actions performed by the project account are traceable back to the individual who used the project account to perform those actions via gsisshd accounting logs. Requesting a Project Account PI's, PI proxies and project managers are allowed to request a project account. In NIM do "Actions->Request a Project Account" and fill in the form. Select the repository that the Project Account is to use from the drop-down menu, "Sponsoring Repository". Enter the name you want for the account (8 characters maximum) and a description of what you will use the account for and then click on the "Request Project Account" button. You

453

Projects | ORNL  

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

and Conferences Supporting Organizations Supercomputing and Computation Home | Science & Discovery | Supercomputing and Computation | Projects Projects 1-10 of 180 Results Prev...

454

Project 244  

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

PROJECT PARTNER Advanced Technology Systems, Inc. Pittsburgh, PA PROJECT PARTNERS Ohio University Athens, OH Texas A&M University-Kingsville Kingsville, TX WEBSITES http:...

455

Project Title  

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

CCS August 20-22, 2013 2 Presentation Outline * Benefits to the program * Project overall objectives * Technical status * Project summary * Conclusions and future plans 3 Benefit...

456

A Climatology of Tropical Anvil and Its Relationship to the Large-Scale Circulation  

E-Print Network (OSTI)

This dissertation uses multiple tools to investigate tropical anvil, i.e., thick, non-precipitating cloud associated with deep convection with the main objectives to provide a climatology of tropics-wide anvil properties and a better understanding of anvil formation, and to provide a more realistic assessment of the radiative impact of tropical anvil on the large-scale circulation. Based on 10 years (1998-2007) of observations, anvil observed by the Tropical Rainfall Measuring Mission (TRMM) Precipitation (PR) shows significant geographical variations, which can be linked to variations in the parent convection. Strong upper level wind shear appears to assist the generation of anvil and may further explain the different anvil statistics over land and ocean. Variations in the large-scale environment appear to play a more important role in anvil production in regions where convection regularly attains heights greater than 7 km. For regions where convection is less deep, variations in the depth of the convection and the large-scale environment likely contribute more equally to anvil generation. Anvil radiative heating profiles are estimated by extrapolating millimeter cloud radar (MMCR) radiative properties from Manus to the 10-year TRMM PR record. When the unconditional anvil areal coverage is taken into account, the anvil radiative heating becomes quite weak, increasing the PR latent heating profile by less than 1 percent at mid and upper levels. Stratiform rain and cirrus radiative heating contributions increase the upper level latent heating by 12 percent. This tropical radiative heating only slightly enhances the latent heating driven model response throughout the tropics, but more significantly over the East Pacific. These modest circulation changes suggest that previous studies may have overemphasized the importance of radiative heating in terms of Walker and Hadley circulation variations. Further, the relationship of cloud radiative heating to latent heating needs to be taken into account for more realistic studies of cloud radiative forcing on the large-scale circulation.

Li, Wei

2009-12-01T23:59:59.000Z

457

Climatology of aerosol optical depth in north?central Oklahoma: 1992–2008  

SciTech Connect

Aerosol optical depth (AOD) has been measured at the Atmospheric Radiation Measurement Program central facility near Lamont, Oklahoma, since the fall of 1992. Most of the data presented are from the multifilter rotating shadowband radiometer, a narrow?band, interference?filter Sun radiometer with five aerosol bands in the visible and near infrared; however, AOD measurements have been made simultaneously and routinely at the site by as many as three different types of instruments, including two pointing Sun radiometers. Scatterplots indicate high correlations and small biases consistent with earlier comparisons. The early part of this 16 year record had a disturbed stratosphere with residual Mt. Pinatubo aerosols, followed by the cleanest stratosphere in decades. As such, the last 13 years of the record reflect changes that have occurred predominantly in the troposphere. The field calibration technique is briefly described and compared to Langley calibrations from Mauna Loa Observatory. A modified cloudscreening technique is introduced that increases the number of daily averaged AODs retrieved annually to about 250 days compared with 175 days when a more conservative method was employed in earlier studies. AODs are calculated when the air mass is less than six; that is, when the Sun’s elevation is greater than 9.25°. The more inclusive cloud screen and the use of most of the daylight hours yield a data set that can be used to more faithfully represent the true aerosol climate for this site. The diurnal aerosol cycle is examined month?by?month to assess the effects of an aerosol climatology on the basis of infrequent sampling such as that from satellites.

Michalsky, Joseph J.; Denn, Frederick; Flynn, Connor J.; Hodges, G. B.; Kiedron, Piotr; Koontz, Annette S.; Schlemmer, James; Schwartz, Stephen E.

2010-04-13T23:59:59.000Z

458

Climatology of aerosol optical depth in North-Central Oklahoma: 1992-2008  

SciTech Connect

Aerosol optical depth (AOD) has been measured at the Atmospheric Radiation Measurement Program central facility near Lamont, Oklahoma, since the fall of 1992. Most of the data presented are from the multifilter rotating shadowband radiometer, a narrow-band, interference-filter Sun radiometer with five aerosol bands in the visible and near infrared; however, AOD measurements have been made simultaneously and routinely at the site by as many as three different types of instruments, including two pointing Sun radiometers. Scatterplots indicate high correlations and small biases consistent with earlier comparisons. The early part of this 16 year record had a disturbed stratosphere with residual Mt. Pinatubo aerosols, followed by the cleanest stratosphere in decades. As such, the last 13 years of the record reflect changes that have occurred predominantly in the troposphere. The field calibration technique is briefly described and compared to Langley calibrations from Mauna Loa Observatory. A modified cloud-screening technique is introduced that increases the number of daily averaged AODs retrieved annually to about 250 days compared with 175 days when a more conservative method was employed in earlier studies. AODs are calculated when the air mass is less than six; that is, when the Sun's elevation is greater than 9.25{sup o}. The more inclusive cloud screen and the use of most of the daylight hours yield a data set that can be used to more faithfully represent the true aerosol climate for this site. The diurnal aerosol cycle is examined month-by-month to assess the effects of an aerosol climatology on the basis of infrequent sampling such as that from satellites.

Michalsky, J.; Schwartz, S.; Denn, F.; Flynn, C.; Hodges, G.; Kiedron, P.; Koontz, A.; Schlemmer, J., and Schwartz, S. E

2010-04-01T23:59:59.000Z

459

Climatology and Formation of Tropical Midlevel Clouds at the Darwin ARM Site  

SciTech Connect

A 4-yr climatology of midlevel clouds is presented from vertically pointing cloud lidar and radar measurements at the Atmospheric Radiation Measurement Program (ARM) site at Darwin, Australia. Few studies exist of tropical midlevel clouds using a dataset of this length. Seventy percent of clouds with top heights between 4 and 8 km are less than 2 km thick. These thin layer clouds have a peak in cloud-top temperature around the melting level (0°C) and also a second peak around -12.5°C. The diurnal frequency of thin clouds is highest during the night and reaches a minimum around noon, consistent with variation caused by solar heating. Using a 1.5-yr subset of the observations, the authors found that thin clouds have a high probability of containing supercooled liquid water at low temperatures: ~20% of clouds at -30°C, ~50% of clouds at -20°C, and ~65% of clouds at -10°C contain supercooled liquid water. The authors hypothesize that thin midlevel clouds formed at the melting level are formed differently during active and break monsoon periods and test this over three monsoon seasons. A greater frequency of thin midlevel clouds are likely formed by increased condensation following the latent cooling of melting during active monsoon periods when stratiform precipitation is most frequent. This is supported by the high percentage (65%) of midlevel clouds with preceding stratiform precipitation and the high frequency of stable layers slightly warmer than 0°C. In the break monsoon, a distinct peak in the frequency of stable layers at 0°C matches the peak in thin midlevel cloudiness, consistent with detrainment from convection.

Riihimaki, Laura D.; McFarlane, Sally A.; Comstock, Jennifer M.

2012-10-01T23:59:59.000Z

460

Development of Aerosol Models for Radiative Flux Calculations at ARM Sites: Utility of Trajectory Clustering for Characterizing Aerosol Climatology  

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

Development of Aerosol Models for Radiative Flux Development of Aerosol Models for Radiative Flux Calculations at ARM Sites: Utility of Trajectory Clustering for Characterizing Aerosol Climatology E. Andrews Cooperative Institute for Research in the Environment University of Colorado Boulder, Colorado E. Andrews, J. A. Ogren, P. J. Sheridan, and J. M. Harris Climate Monitoring and Diagnostics Laboratory National Oceanic and Atmospheric Administration Boulder, Colorado P. K. Quinn Pacific Marine Environmental Laboratory National Oceanic and Atmospheric Administration Seattle, Washington Abstract The uncertainties associated with assumptions of generic aerosol properties in radiative transfer codes are unknown, which means that these uncertainties are frequently invoked when models and

Note: This page contains sample records for the topic "land-surface climatology project" 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

Science Projects  

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

Argonne Argonne Science Project Ideas! Our Science Project section provides you with sample classroom projects and experiments, online aids for learning about science, as well as ideas for Science Fair Projects. Please select any project below to continue. Also, if you have an idea for a great project or experiment that we could share, please click our Ideas page. We would love to hear from you! Science Fair Ideas Science Fair Ideas! The best ideas for science projects are learning about and investigating something in science that interests you. NEWTON has a list of Science Fair linkd that can help you find the right topic. Toothpick Bridge Web Sites Toothpick Bridge Sites! Building a toothpick bridge is a great class project for physics and engineering students. Here are some sites that we recommend to get you started!

462

The climatology of East Asian winter monsoon and cold surges from 1979--1995 NCEP/NCAR reanalyses  

SciTech Connect

The East Asian winter monsoon, which is associated with the Siberian high and active cold surges, is one of the most energetic monsoon circulation systems. The dramatic shift of northeasterlies and the outbreak of cold surges dominate the winter weather and local climate in the East Asian region, and may exert a strong impact on the extratropical and tropical planetary-scale circulations and influence the SSTs in the tropical western Pacific. General characteristics of the winter monsoon and cold surges and their possible link with tropical disturbances are revealed in many observational studies. Little attention has been given to the climatological aspects of the winter monsoon and cold surges. The purpose of this study is to compile and document the East Asian mean winter circulation, and present the climatology of cold surges and the Siberian high based on the 1979--1995 NCEP/NCAR reanalyses. Of particular interest is the interannual variation of winter monsoon circulation and cold surge events. Given that the cold surge activity and the Indonesian convection are much reduced during the 1982--83 period, one of the goals is to determine whether there exists a statistically significant relationship between ENSO and the interannual variation of winter monsoon and cold surges.

Yi Zhang; Sperber, K.; Boyle, J.

1996-04-01T23:59:59.000Z

463

Power Projects  

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

Power Projects Power Projects Contact SN Customers Environmental Review-NEPA Operations & Maintenance Planning & Projects Power Marketing Rates You are here: SN Home page > About SNR Power Projects Central Valley: In California's Central Valley, 18 dams create reservoirs that can store 13 million acre-feet of water. The project's 615 miles of canals irrigate an area 400 miles long and 45 miles wide--almost one third of California. Powerplants at the dams have an installed capacity of 2,099 megawatts and provide enough energy for 650,000 people. Transmission lines total about 865 circuit-miles. Washoe: This project in west-central Nevada and east-central California was designed to improve the regulation of runoff from the Truckee and Carson river systems and to provide supplemental irrigation water and drainage, as well as water for municipal, industrial and fishery use. The project's Stampede Powerplant has a maximum capacity of 4 MW.

464

Subvisual-Thin Cirrus Lidar Dataset for Satellite Verification and Climatological Research  

Science Conference Proceedings (OSTI)

A polarization (0.694-?m wavelength) lidar dataset for subvisual and thin (bluish-colored) cirrus clouds is drawn from Project FIRE (First ISCCP Regional Experiment) extended time observations. The clouds are characterized by their day–night ...

Kenneth Sassen; Byung Sung Cho

1992-11-01T23:59:59.000Z

465

Project Title  

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

CCS CCS August 20-22, 2013 2 Presentation Outline * Benefits to the program * Project overall objectives * Technical status * Project summary * Conclusions and future plans 3 Benefit to the Program * Develop technologies that will support industries' ability to predict CO 2 storage capacity in geologic formations to within ±30 percent. * Develop technologies to demonstrate that 99 percent of injected CO 2 remains in the injection zones. * This research project develops a reservoir scale CO 2 plume migration model at the Sleipner project, Norway. The Sleipner project in the Norwegian North Sea is the world's first commercial scale geological carbon storage project. 4D seismic data have delineated the CO 2 plume migration history. The relatively long history and high fidelity data make

466

Project Title  

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

Test and Evaluation of Test and Evaluation of Engineered Biomineralization Technology for Sealing Existing wells Project Number: FE0009599 Robin Gerlach Al Cunningham, Lee H Spangler Montana State University U.S. Department of Energy National Energy Technology Laboratory Carbon Storage R&D Project Review Meeting Developing the Technologies and Infrastructure for CCS August 20-22, 2013 Presentation Outline * Motivation & Benefit to the Program (required) * Benefit to the Program and Project Overview (required) * Background information - Project Concept (MICP) - Ureolytic Biomineralization, Biomineralization Sealing * Accomplishments to Date - Site Characterization - Site Preparation - Experimentation and Modeling - Field Deployable Injection Strategy Development * Summary

467

Project Title  

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

LBNL's Consolidated Sequestration Research Program (CSRP) Project Number FWP ESD09-056 Barry Freifeld Lawrence Berkeley National Laboratory U.S. Department of Energy National Energy Technology Laboratory Carbon Storage R&D Project Review Meeting Developing the Technologies and Infrastructure for CCS August 20-22, 2013 2 Presentation Outline * Benefits and Goals of GEO-SEQ * Technical Status - Otway Project (CO2CRC) - In Salah (BP, Sonatrach and Statoil) - Ketzin Project (GFZ, Potsdam) - Aquistore (PTRC) * Accomplishments and Summary * Future Plans 3 Benefit to the Program * Program goals being addressed: - Develop technologies to improve reservoir storage capacity estimation - Develop and validate technologies to ensure 99 percent storage permanence.

468

Project Title  

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

1-23, 2012 1-23, 2012 2 Presentation Outline I. Benefits II. Project Overview III. Technical Status A. Background B. Results IV. Accomplishments V. Summary 3 Benefit to the Program * Program goals. - Prediction of CO 2 storage capacity. * Project benefits. - Workforce/Student Training: Support of 3 student GAs in use of multiphase flow and geochemical models simulating CO 2 injection. - Support of Missouri DGLS Sequestration Program. 4 Project Overview: Goals and Objectives Project Goals and Objectives. 1. Training graduate students in use of multi-phase flow models related to CO 2 sequestration. 2. Training graduate students in use of geochemical models to assess interaction of CO

469

Project Title  

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

Center for Coal's Center for Coal's FY10 Carbon Sequestration Peer Review February 8 - 12, 2010 2 Collaborators * Tissa Illangasekare (Colorado School of Mines) * Michael Plampin (Colorado School of Mines) * Jeri Sullivan (LANL) * Shaoping Chu (LANL) * Jacob Bauman (LANL) * Mark Porter (LANL) 3 Presentation Outline * Benefit to the program * Project overview * Project technical status * Accomplishments to date * Future Plans * Appendix 4 Benefit to the program * Program goals being addressed (2011 TPP): - Develop technologies to demonstrate that 99 percent of injected CO 2 remains in the injection zones. * Project benefit: - This project is developing system modeling capabilities that can be used to address challenges associated with infrastructure development, integration, permanence &

470

Project 364  

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

765-494-5623 lucht@purdue.edu DEVELOPMENT OF NEW OPTICAL SENSORS FOR MEASUREMENT OF MERCURY CONCENTRATIONS, SPECIATION, AND CHEMISTRY Project Description The feasibility of...

471

Project Title  

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

Test and Evaluation of Engineered Biomineralization Technology for Sealing Existing wells Project Number: FE0009599 Robin Gerlach Al Cunningham, Lee H Spangler Montana State...

472

Project Title  

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

Impact of CO 2 Injection on the Subsurface Microbial Community in an Illinois Basin CCS Reservoir: Integrated Student Training in Geoscience and Geomicrobiology Project Number...

473

Project 197  

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

will bring economic value to both the industrial customers and to the participating companies. * Complete project by June 2006. Accomplishments A ceramic membrane and seal...

474

Project 283  

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

NJ 07039 973-535 2328 ArchieRobertson@fwc.com Sequestration ADVANCED CO 2 CYCLE POWER GENERATION Background This project will develop a conceptual power plant design...

475

Project Title  

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

U.S. Department of Energy National Energy Technology Laboratory Carbon Storage R&D Project Review Meeting Developing the Technologies and Building the Infrastructure for...

476

Project Title  

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

* Concrete products in this project * Standard 8" concrete blocks * Standard 4' x 8' fiber-cement boards CO 2 The Goals * Maximizing carbon uptake by carbonation (at least...

477

Project 252  

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

Stanford Global Climate Energy Project Terralog Technologies TransAlta University of Alaska Fairbanks Washington State Department of Natural Resources Western Interstate...

478

Project Title  

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

research partnership to improve the understanding of CO 2 within coal and shale reservoirs. 2 2 3 Presentation Outline * Program Goal and Benefits Statement * Project...

479

Project Title  

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

mechanistic insights 5 Project Overview: Scope of work * Task 1 - Pipeline and Casing Steel Corrosion Studies * Evaluate corrosion behavior of pipeline steels in CO 2 mixtures...

480

Project Title  

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

20-22, 2013 2 Acknowledgements * NETL * Shell * Tri-State * Trapper Mining * State of Colorado 3 Presentation Outline * Program Benefits * Project Program Goals * Technical...

Note: This page contains sample records for the topic "land-surface climatology project" 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

Project Title  

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

Storage R&D Project Review Meeting Developing the Technologies and Infrastructure for CCS August 20-22, 2013 Evaluating Potential Groundwater Impacts and Natural Geochemical...

482

Project Title  

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

Infrastructure for CCS August 20-22, 2013 2 Presentation Outline * Introduction * Organization * Benefit to Program * Project Overview * Technical Status * Accomplishments to Date...

483

Project Title  

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

* This project pinpoints the critical catalyst features necessary to promote carbon dioxide conversion to acrylate, validate the chemical catalysis approach, and develop an...

484

Project Title  

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

Scale CO 2 Injection and Optimization of Storage Capacity in the Southeastern United States Project Number: DE-FE0010554 George J. Koperna, Jr. Shawna Cyphers Advanced Resources...

485

Project Title  

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

of Energy National Energy Technology Laboratory Carbon Storage R&D Project Review Meeting Developing the Technologies and Building the Infrastructure for CCUS Pittsburgh,...

486

Project Title  

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

Interdisciplinary Investigation of the CO 2 Sequestration in Depleted Shale Gas Formations Project Number DE-FE-0004731 Jennifer Wilcox, Tony Kovscek, Mark Zoback Stanford...

487

Land Surface Controls on Hydroclimatic Means and Variability  

Science Conference Proceedings (OSTI)

Hydroclimatic means and variability are determined in large part by the control of soil moisture on surface moisture fluxes, particularly evapotranspiration and runoff. This control is examined here using a simple water balance model and ...

Randal D. Koster; Sarith P. P. Mahanama

2012-10-01T23:59:59.000Z

488

Objective drought classification using multiple land surface models  

Science Conference Proceedings (OSTI)

The current generation of drought monitors uses physically based indices, such as the standardized precipitation index (SPI), total soil moisture percentiles (SMP) and the standardized runoff index (SRI) to monitor precipitation, soil moisture and ...

Kingtse C. Mo; Dennis P. Lettenmaier

489

The effect of land surface changes on Eemian climate  

Science Conference Proceedings (OSTI)

surface albedo, an increase of the amount of absorbed solar radiation and thereby ... more comprehensive representation of weather and climate than given by ...

490

A Numerical Investigation of Land Surface Water on Landfalling Hurricanes  

Science Conference Proceedings (OSTI)

Little is known about the effects of surface water over land on the decay of landfalling hurricanes. This study, using the National Oceanic and Atmospheric Administration Geophysical Fluid Dynamics Laboratory hurricane model, examines the surface ...

Weixing Shen; Isaac Ginis; Robert E. Tuleya

2002-02-01T23:59:59.000Z

491

Anisotropy of Land Surface Skin Temperature Derived from Satellite Data  

Science Conference Proceedings (OSTI)

The land skin temperature, an important feature for agricultural monitoring, convective processes, and the earth’s radiation budget, is monitored from limited-view satellite imagers. The angular dependence of this parameter is examined using ...

Patrick Minnis; Mandana M. Khaiyer

2000-07-01T23:59:59.000Z

492

Flux Parameterization over Land Surfaces for Atmospheric Models  

Science Conference Proceedings (OSTI)

In this paper a summary is given of observations and modeling efforts on surface fluxes, carried out at Cabauw in The Netherlands and during MESOGERS-84 in the south of France. Emphasis is put on those aspects that are important from a modeling ...

A. C. M. Beljaars; A. A. M. Holtslag

1991-03-01T23:59:59.000Z

493

Assessment and Enhancement of MERRA Land Surface Hydrology Estimates  

Science Conference Proceedings (OSTI)

The Modern-Era Retrospective Analysis for Research and Applications (MERRA) is a state-of-the-art reanalysis that provides, in addition to atmospheric fields, global estimates of soil moisture, latent heat flux, snow, and runoff for 1979–present. ...

Rolf H. Reichle; Randal D. Koster; Gabriëlle J. M. De Lannoy; Barton A. Forman; Qing Liu; Sarith P. P. Mahanama; Ally Touré

2011-12-01T23:59:59.000Z

494

Evaluation of 10 Methods for Initializing a Land Surface Model  

Science Conference Proceedings (OSTI)

Improper initialization of numerical models can cause spurious trends in the output, inviting erroneous interpretations of the earth system processes that one wishes to study. In particular, soil moisture memory is considerable, so that accurate ...

M. Rodell; P. R. Houser; A. A. Berg; J. S. Famiglietti

2005-04-01T23:59:59.000Z

495

IMPROVING THE REPRESENTATION OF AGRICULTURAL MANAGEMENT IN LAND SURFACE MODELS  

E-Print Network (OSTI)

the challenging task of increasing food production to keep up with growing population, growing per-capita consumption and the use of agricultural products as biofuels. Climate change, and the associated increases and energy. I estimated that the trend to longer-season corn cultivars over the last three decades can

Wisconsin at Madison, University of

496

A Revised Force–Restore Model for Land Surface Modeling  

Science Conference Proceedings (OSTI)

To clarify the definition of the equation for the temperature toward which the soil skin temperature is restored, the prediction equations in the commonly used force–restore model for soil temperature are rederived from the heat conduction ...

Diandong Ren; Ming Xue

2004-11-01T23:59:59.000Z

497

A Climatology of Diurnal and Semidiurnal Surface Wind Variations over the Tropical Pacific Ocean Based on the Tropical Atmosphere Ocean Moored Buoy Array  

Science Conference Proceedings (OSTI)

Hourly measurements from 51 moored buoys in the Tropical Atmosphere Ocean array (9°N–8°S, 165°E–95°W) during 1993–2004 are used to document the climatological seasonal and annual mean patterns of diurnal and semidiurnal near-surface wind ...

Rei Ueyama; Clara Deser

2008-02-01T23:59:59.000Z

498

The Coastal Boundary Layer at the Eastern Margin of the Southeast Pacific (23.4°S, 70.4°W): Cloudiness-Conditioned Climatology  

Science Conference Proceedings (OSTI)

A basic climatological description of 29 years of surface and upper-air observations at a coastal site (23.4°S, 70.4°W) in northern Chile is presented. The site is considered to be generally representative of the eastern coastal margin of the ...

Ricardo C. Muñoz; Rosa A. Zamora; José A. Rutllant

2011-02-01T23:59:59.000Z

499

Synoptic Climatology of Monthly Mean Surface Temperature in the Unit States during Summer in Relation to the Surrounding 700-mb Height Field  

Science Conference Proceedings (OSTI)

The synoptic climatology of monthly mean temperature at 109 surface stations in the contiguous United States relative to 700-mb heights at 133 grid points is assessed. Two methods are used based on data for 102 summer months from June 1948 to ...

Joann M. Kline; William H. Klein

1986-07-01T23:59:59.000Z

500

Regional Diurnal Albedo Climatology and Diurnal Time Extrapolation of Reflected Solar Flux Observations: Application to the ScaRaB Record  

Science Conference Proceedings (OSTI)

A regional (2.5° × 2.5° resolved) diurnal (hourly) albedo climatology for low and midlatitudes is derived for each month from the 5?-yr narrow-field-of-view data record obtained from the Earth Radiation Budget Satellite (ERBS). It is used in a ...

Carsten Standfuss; Michel Viollier; Robert S. Kandel; Jean Philippe Duvel

2001-03-01T23:59:59.000Z