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


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

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

3

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...

4

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

5

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

6

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

7

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

8

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:

9

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

10

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

11

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

12

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

13

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

14

Monthly Mean Diurnal Cycles in Surface Temperatures over Land for Global Climate Studies  

Science Conference Proceedings (OSTI)

Monthly mean diurnal cycles (MDCs) of surface temperatures over land, represented in 3-h universal time intervals, have been analyzed. Satellite near-global data from the International Satellite Cloud Climatology Project (ISCCP) with a (280 km)2 ...

Alexander Ignatov; Garik Gutman

1999-07-01T23:59:59.000Z

15

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

16

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

17

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

18

Climatological Data For Clouds Over the Globe From Surface Observations,  

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

For Clouds Over the Globe From Surface Observations, For Clouds Over the Globe From Surface Observations, 1982-1991: The Total Cloud Edition (1994) (NDP-026a) data Data Investigators C. J. Hahn, S. G. Warren, and J. London Routine, synoptic surface weather reports from ships and land stations over the entire globe, for the10-year period December 1981 through November 1991, were processed for total cloud cover and the frequencies of occurrence of clear sky, sky-obscured due to precipitation, and sky-obscured due to fog. Archived data, consisting of various annual, seasonal and monthly averages, are provided in grid boxes that are typically 2.5° × 2.5° for land and 5° × 5° for ocean. Day and nighttime averages are also given separately for each season. Several derived quantities, such as interannual variations and annual and diurnal

19

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

20

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

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

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

22

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

23

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

24

Climatological Data for Clouds Over the Globe from Surface Observations  

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

for Clouds Over the Globe from Surface Observations for Clouds Over the Globe from Surface Observations (1988) (NDP-026) DOI: 10.3334/CDIAC/cli.ndp026 data Data Investigators C. J. Hahn, S. G. Warren, J. London, R. L. Jenne, and R. M. Chervin With some data from as early as 1930, global long-term monthly and/or seasonal total cloud cover, cloud type amounts and frequencies of occurrence, low cloud base heights, harmonic analyses of annual and diurnal cycles, interannual variations and trends, and cloud type co-occurrences have been compiled and presented in two atlases (Warren et al. 1988, 1990). These data were derived from land and ship synoptic weather reports from the "SPOT" archive of the Fleet Numerical Oceanography Center (FNOC) and from Release 1 of the Comprehensive Ocean-Atmosphere Data Set (COADS) for

25

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

26

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

27

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

28

Regional and Global Impacts of Land Cover Change and Sea Surface Temperature Anomalies  

Science Conference Proceedings (OSTI)

The atmospheric and land components of the Geophysical Fluid Dynamics Laboratory’s (GFDL’s) Climate Model version 2.1 (CM2.1) is used with climatological sea surface temperatures (SSTs) to investigate the relative climatic impacts of historical ...

Kirsten L. Findell; Andrew J. Pitman; Matthew H. England; Philip J. Pegion

2009-06-01T23:59:59.000Z

29

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

30

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

31

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

32

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

33

Recent Climatology, Variability, and Trends in Global Surface Humidity  

Science Conference Proceedings (OSTI)

In situ observations of surface air and dewpoint temperatures and air pressure from over 15 000 weather stations and from ships are used to calculate surface specific (q) and relative (RH) humidity over the globe (60°S–75°N) from December 1975 to ...

Aiguo Dai

2006-08-01T23:59:59.000Z

34

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

35

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

36

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

37

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

38

A 7-Yr Climatological Study of Land Breezes over the Florida Spaceport  

Science Conference Proceedings (OSTI)

Seven years of wind and temperature data from a high-resolution network of 44 towers at the Kennedy Space Center and Cape Canaveral Air Force Station were used to develop an objective method for identifying land breezes, which are defined as ...

Jonathan L. Case; Mark M. Wheeler; John Manobianco; Johnny W. Weems; William P. Roeder

2005-03-01T23:59:59.000Z

39

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

40

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

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

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

42

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

43

Application for State Land Use Lease: Surface Lease (SL) - Coastal...  

Open Energy Info (EERE)

for State Land Use Lease: Surface Lease (SL) - Coastal Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Reference Material: Application for State Land Use Lease:...

44

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

45

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

46

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.

47

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

48

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

49

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

50

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

51

Development of a Unified Land Model for Prediction of Surface Hydrology and Land–Atmosphere Interactions  

Science Conference Proceedings (OSTI)

A unified land model (ULM) is described that combines the surface flux parameterizations in the Noah land surface model (used in most of NOAA’s coupled weather and climate models) with the Sacramento Soil Moisture Accounting model (Sac; used for ...

Ben Livneh; Pedro J. Restrepo; Dennis P. Lettenmaier

2011-12-01T23:59:59.000Z

52

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

53

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

54

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

55

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

56

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

57

Applied Modeling of the Nighttime Surface Energy Balance over Land  

Science Conference Proceedings (OSTI)

In this paper a semiempirical scheme is proposed which relates the nocturnal surface fluxes of sensible heat, latent heat, and momentum to routine weather data. The main components of the surface radiation and energy balance over land are ...

A. A. M. Holtslag; H. A. R. De Bruin

1988-06-01T23:59:59.000Z

58

Carbon Sequestration on Surface Mine Lands  

SciTech Connect

Since the implementation of the federal Surface Mining Control and Reclamation Act of 1977 (SMCRA) in May of 1978, many opportunities have been lost for the reforestation of surface mines in the eastern United States. Research has shown that excessive compaction of spoil material in the backfilling and grading process is the biggest impediment to the establishment of productive forests as a post-mining land use (Ashby, 1998, Burger et al., 1994, Graves et al., 2000). Stability of mine sites was a prominent concern among regulators and mine operators in the years immediately following the implementation of SMCRA. These concerns resulted in the highly compacted, flatly graded, and consequently unproductive spoils of the early post-SMCRA era. However, there is nothing in the regulations that requires mine sites to be overly compacted as long as stability is achieved. It has been cultural barriers and not regulatory barriers that have contributed to the failure of reforestation efforts under the federal law over the past 27 years. Efforts to change the perception that the federal law and regulations impede effective reforestation techniques and interfere with bond release must be implemented. Demonstration of techniques that lead to the successful reforestation of surface mines is one such method that can be used to change perceptions and protect the forest ecosystems that were indigenous to these areas prior to mining. The University of Kentucky initiated a large-scale reforestation effort to address regulatory and cultural impediments to forest reclamation in 2003. During the three years of this project 383,000 trees were planted on over 556 acres in different physiographic areas of Kentucky (Table 1, Figure 1). Species used for the project were similar to those that existed on the sites before mining was initiated (Table 2). A monitoring program was undertaken to evaluate growth and survival of the planted species as a function of spoil characteristics and reclamation practice. In addition, experiments were integrated within the reforestation effort to address specific questions pertaining to sequestration of carbon (C) on these sites.

Donald Graves; Christopher Barton; Richard Sweigard; Richard Warner; Carmen Agouridis

2006-03-31T23:59:59.000Z

59

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

60

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

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

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

62

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

63

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

64

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

65

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

66

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

67

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...

68

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

69

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

70

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

71

Surface Energy Components and Land Characteristics of a Rice Paddy  

Science Conference Proceedings (OSTI)

Many meteorological and air-quality models require land characteristics as inputs. A field experiment was conducted to study the surface energy budget of a rice paddy in Taiwan. During the day, the energy balance ratio measured by an eddy ...

Jeng-Lin Tsai; Ben-Jei Tsuang; Po-Sheng Lu; Ming-Hwi Yao; Yuan Shen

2007-11-01T23:59:59.000Z

72

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

73

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

74

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

75

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

76

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

77

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

78

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

79

CARBON SEQUESTRATION ON SURFACE MINE LANDS  

SciTech Connect

An area planted in 2004 on Bent Mountain in Pike County was shifted to the Department of Energy project to centralize an area to become a demonstration site. An additional 98.3 acres were planted on Peabody lands in western Kentucky and Bent Mountain to bring the total area under study by this project to 556.5 acres as indicated in Table 2. Major efforts this quarter include the implementation of new plots that will examine the influence of differing geologic material on tree growth and survival, water quality and quantity and carbon sequestration. Normal monitoring and maintenance was conducted and additional instrumentation was installed to monitor the new areas planted.

Donald H. Graves; Christopher Barton; Richard Sweigard; Richard Warner

2005-06-22T23:59:59.000Z

80

Other Surface Impoundments and Land Applications (Oklahoma)  

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

A water quality permit is required from the Department of Environmental Quality to construct, install, operate or close any industrial surface impoundment, industrial septic tank or treatment...

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

A Climatology of Surface Cloud Radiative Effects at the ARM Tropical Western Pacific Sites  

Science Conference Proceedings (OSTI)

Cloud radiative effects on surface downwelling fluxes are investigated using datasets from the Atmospheric Radiation Measurement Program (ARM) sites in the tropical western Pacific Ocean (TWP) region. The Nauru Island (Republic of Nauru) and ...

Sally A. McFarlane; Charles N. Long; Julia Flaherty

2013-04-01T23:59:59.000Z

82

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

83

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

84

CARBON SEQUESTRATION OF SURFACE MINE LANDS  

SciTech Connect

The January-March 2004 Quarter was dedicated to tree planting activities in two locations in Kentucky. During year one of this project there was no available mine land to plant in the Hazard area so 107 acres were planted in the Martin county mine location. This year 120 acres was planted in the Hazard area to compensate for the prior year and an additional 57 acres was planted on Peabody properties in western Kentucky. An additional set of special plots were established on each of these areas that contained 4800 seedlings each for special carbon sequestration determinations. Plantings were also conducted to continue compaction and water quality studies on two newly established areas as well as confirmed measurements on the first years plantings. Total plantings on this project now amount to 357 acres containing 245,960 tree seedlings.

Donald H. Graves; Christopher Barton; Richard Sweigard; Richard Warner

2004-05-19T23:59:59.000Z

85

A Climatology of Surface Cloud Radiative Effects at the ARM Tropical Western Pacific Sites  

SciTech Connect

Cloud radiative effects on surface downwelling fluxes are investigated using long-term datasets from the three Atmospheric Radiation Measurement (ARM) sites in the Tropical Western Pacific (TWP) region. The Nauru and Darwin sites show significant variability in sky cover, downwelling radiative fluxes, and surface cloud radiative effect (CRE) due to El Niño and the Australian monsoon, respectively, while the Manus site shows little intra-seasonal or interannual variability. Cloud radar measurement of cloud base and top heights are used to define cloud types so that the effect of cloud type on the surface CRE can be examined. Clouds with low bases contribute 71-75% of the surface shortwave (SW) CRE and 66-74% of the surface longwave (LW) CRE at the three TWP sites, while clouds with mid-level bases contribute 8-9% of the SW CRE and 12-14% of the LW CRE, and clouds with high bases contribute 16-19% of the SW CRE and 15-21% of the LW CRE.

McFarlane, Sally A.; Long, Charles N.; Flaherty, Julia E.

2013-04-01T23:59:59.000Z

86

Carbon Sequestration on Surface Mine Lands  

Science Conference Proceedings (OSTI)

The first quarter of 2004 was dedicated to tree planting activities in two locations in Kentucky. During the first year of this project there was not available mine land to plant in the Hazard area, so 107 acres were planted in the Martin County mine location. This year 120 acres were planted in the Hazard area to compensate for the prior year and an additional 57 acres were planted on Peabody properties in western Kentucky. Additional sets of special plots were established on each of these areas that contained 4800 seedlings each for carbon sequestration demonstrations. Plantings were also conducted to continue compaction and water quality studies on the newly established areas as well as continual measurements of the first year's plantings. Total plantings on this project now amount to 357 acres containing 245,960 seedlings. During the second quarter of this year monitoring systems were established for all the new research areas. Weather data pertinent to the research as well as hydrology and water quality monitoring continues to be conducted on all areas. Studies established to assess specific questions pertaining to carbon flux and the invasion of the vegetation by small mammals are being quantified. Experimental practices initiated with this research project will eventually allow for the planting on long steep slopes with loose grading systems and allow mountain top removal areas to be constructed with loose spoil with no grading of the final layers of rooting material when establishing trees for the final land use designation. Monitoring systems have been installed to measure treatment effects on both above and below ground carbon and nitrogen pools in the planting areas. Soil and tissue samples were collected from both years planting and analyses were conducted in the laboratory. Examination of decomposition and heterotropic respiration on carbon cycling in the reforestation plots continued during the reporting period. Entire planted trees were extracted from the study area to evaluate carbon accumulation as a function of time on the mine sites. These trees were extracted and separated into the following components: foliage, stems, branches, and roots. Each component was evaluated to determine the contribution of each to the total sequestration value. The fourth quarter of the year was devoted to analyzing the first two years tree planting activities and the evaluation of the results. These analyses included the species success at each of the sites and quantifying the data for future year determination of research levels. Additional detailed studies have been planned to further quantify total carbon storage accumulation on the study areas. At least 124 acres of new plantings will be established in 2005 to bring the total to 500 acres or more in the study area across the state of Kentucky.

Donald H. Graves; Christopher Barton; Bon Jun Koo; Richard Sweigard; Richard Warner

2004-11-30T23:59:59.000Z

87

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

88

CARBON SEQUESTRATION ON SURFACE MINE LANDS  

Science Conference Proceedings (OSTI)

The October-December 2003 Quarter was dedicated to analyzing the first years tree planting activities and evaluation of the results. This included the analyses of the species success at each of the sites and quantifying the baseline data for future year determination of research levels of mixes. The small mammal colonization study of revegetated surface mines was also initiated and sampling systems initiated.

Donald H. Graves; Christopher Barton; Richard Sweigard; Richard Warner

2001-01-30T23:59:59.000Z

89

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

90

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

91

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

92

CARBON SEQUESTRATION ON SURFACE MINE LANDS  

Science Conference Proceedings (OSTI)

The April-June 2004 quarter was dedicated to the establishment of monitoring systems for all the new research areas. Hydrology and water quality monitoring continues to be conducted on all areas as does weather data pertinent to the research. Studies assessing specific questions pertaining to carbon flux has been established and the invasion of the vegetation by small mammals is being quantified. The approval of two experimental practices associated with this research by the United States Office of Surface Mining was a major accomplishment during this period of time. These experimental practices will eventually allow for tree planting on long steep slopes with loose grading systems and for the use of loose dumped spoil on mountain top removal areas with no grading in the final layer of rooting material for tree establishment.

Donald H. Graves; Christopher Barton; Richard Sweigard; Richard Warner

2004-08-02T23:59:59.000Z

93

Carbon Sequestration on Surface Mine Lands  

Science Conference Proceedings (OSTI)

During this quarter a general forest monitoring program was conducted to measure treatment effects on above ground and below ground carbon C and Nitrogen (N) pools for the tree planting areas. Detailed studies to address specific questions pertaining to Carbon cycling was initiated with the development of plots to examine the influence of mycorrhizae, spoil chemical and mineralogical properties, and use of amendment on forest establishment and carbon sequestration. Efforts continued during this period to examine decomposition and heterotrophic respiration on C cycling in the reforestation plots. Projected climate change resulting from elevated atmospheric carbon dioxide has given rise to various strategies to sequester carbon in various terrestrial ecosystems. Reclaimed surface mine soils present one such potential carbon sink where traditional reclamation objectives can complement carbon sequestration. New plantings required the modification and design and installation on monitoring equipment. Maintenance and data monitoring on past and present installations are a continuing operation. The Department of Mining Engineering continued the collection of penetration resistance, penetration depth, and bulk density on both old and new treatment areas. Data processing and analysis is in process for these variables. Project scientists and graduate students continue to present results at scientific meetings, tours and field days presentations of the research areas are being conducted on a request basis.

Donald H. Graves; Christopher Barton; Richard Sweigard; Richard Warner

2005-10-02T23:59:59.000Z

94

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

95

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

96

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

97

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

98

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

99

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

100

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

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


101

The 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

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

2013-10-01T23:59:59.000Z

103

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

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

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

106

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

107

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

108

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

109

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

110

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

111

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

112

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

113

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

114

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

115

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

116

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

117

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

118

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

119

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

120

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

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

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

122

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

123

ISCCP Cloud Properties Associated with Standard Cloud Types Identified in Individual Surface Observations  

Science Conference Proceedings (OSTI)

Individual surface weather observations from land stations and ships are compared with individual cloud retrievals of the International Satellite Cloud Climatology Project (ISCCP), stage C1, for an 8-yr period (1983–91) to relate cloud optical ...

Carole J. Hahn; William B. Rossow; Stephen G. Warren

2001-01-01T23:59:59.000Z

124

Hemispheric Surface Air Temperature Variations: A Reanalysis and an Update to 1993  

Science Conference Proceedings (OSTI)

Land-based compilations of gridded monthly surface air temperature anomalies, averaged into hemispheric values for the last 140 years, have been available for climatological analyses for the last 10 years or so. The analysis techniques used in ...

P. D. Jones

1994-11-01T23:59:59.000Z

125

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

126

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

127

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

128

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

129

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

130

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

131

Scaling Water and Energy Fluxes in Climate Systems: Three Land-Atmospheric Modeling Experiments  

Science Conference Proceedings (OSTI)

The effects of small-scale heterogeneity in land-surface characteristics on the large-scale fluxes of water and energy in the land-atmosphere system have become a central focus of many of the climatology research experiments. The acquisition of ...

Eric F. Wood; Venkataraman Lakshmi

1993-05-01T23:59:59.000Z

132

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

133

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

134

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

135

Differing Trends in the Tropical Surface Temperatures and Precipitation over Land and Oceans  

Science Conference Proceedings (OSTI)

In the past 50 years, sea surface temperatures (SSTs) in the tropical latitudes have trended toward a warmer ocean state. As a response, tropical land surface temperatures, as well as tropical tropospheric temperatures (as manifested in the ...

Arun Kumar; Fanglin Yang; Lisa Goddard; Siegfried Schubert

2004-02-01T23:59:59.000Z

136

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

137

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

138

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

139

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

140

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

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

Improvements to NOAA’s Historical Merged Land–Ocean Surface Temperature Analysis (1880–2006)  

Science Conference Proceedings (OSTI)

Observations of sea surface and land–near-surface merged temperature anomalies are used to monitor climate variations and to evaluate climate simulations; therefore, it is important to make analyses of these data as accurate as possible. Analysis ...

Thomas M. Smith; Richard W. Reynolds; Thomas C. Peterson; Jay Lawrimore

2008-05-01T23:59:59.000Z

142

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

143

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

144

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

145

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

146

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

147

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

148

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

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

The climatological record of clear-sky longwave radiation at the Earth's surface: evidence for water vapour feedback?  

Science Conference Proceedings (OSTI)

An increase in global surface temperature of between 1.4 K and 5.8 K is expected to occur by 2100 due to a doubling of the global concentration of CO2. Associated with this predicted surface warming will be an increase in the downwards longwave ...

F. Prata

2008-09-01T23:59:59.000Z

151

Analytical Solutions to the Near-Neutral Atmospheric Surface Energy Balance with and without Heat Storage for Urban Climatological Studies  

Science Conference Proceedings (OSTI)

Analytical solutions are presented to the near-neutral atmospheric surface energy balance with the new approach of including the participation of heat storage in the building substrate. Analytical solutions are also presented for the first time ...

C. P. Tso; B. K. Chan; M. A. Hashim

1991-04-01T23:59:59.000Z

152

Revisiting GLACE: Understanding the Role of the Land Surface in Land–Atmosphere Coupling  

Science Conference Proceedings (OSTI)

The Global Land–Atmosphere Coupling Experiment (GLACE) established a method for quantifying and comparing the influence of soil moisture on the atmosphere in AGCMs. The models included in the GLACE intercomparison displayed a wide range in the ...

Ruth E. Comer; Martin J. Best

2012-12-01T23:59:59.000Z

153

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

154

The Response of a Global Ocean General Circulation Model to Climatological Surface Boundary Conditions for Temperature and Salinity  

Science Conference Proceedings (OSTI)

The response of a global ocean general circulation model (OGCM) to different surface heat and freshwater fluxes is examined. The aim is to determine the most appropriate way to spin up an OGCM prior to coupling it with an atmospheric GCM. ...

Andrew M. Moore; Christopher J. C. Reason

1993-02-01T23:59:59.000Z

155

A 25-yr Climatology of Large-Amplitude Hourly Surface Pressure Changes over the Conterminous United States  

Science Conference Proceedings (OSTI)

Hourly surface pressure observations for a 25-yr period (1949–63; 1984–93) for the conterminous United States have been used to map the distribution of large hourly pressure changes defined as falls or rises in excess of 4.25 hPa. Initially, 8431 ...

Lorna L. Koppel; Lance F. Bosart; Daniel Keyser

2000-01-01T23:59:59.000Z

156

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

157

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

158

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

159

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

160

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" 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

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

162

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

163

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

164

Global Retrospective Estimation of Soil Moisture Using the Variable Infiltration Capacity Land Surface Model, 1980–93  

Science Conference Proceedings (OSTI)

A daily set of surface meteorological forcings, model-derived surface moisture fluxes, and state variables for global land areas for the period of 1979–93 is described. The forcing dataset facilitates global simulations and evaluation of land ...

Bart Nijssen; Reiner Schnur; Dennis P. Lettenmaier

2001-04-01T23:59:59.000Z

165

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

166

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

167

Maximum Surface Albedo of Seasonally Snow-Covered Lands in the Northern Hemisphere  

Science Conference Proceedings (OSTI)

Areally weighted clear sky surface albedo of snow-covered land in the middle and high latitudes of the Northern Hemisphere was measured from satellite imagery in A 1×1° latitude-longitude cells. The study area included 87% of the land polewards ...

David A. Robinson; George Kukla

1985-05-01T23:59:59.000Z

168

The CCSM4 Land Simulation, 1850–2005: Assessment of Surface Climate and New Capabilities  

Science Conference Proceedings (OSTI)

This paper reviews developments for the Community Land Model, version 4 (CLM4), examines the land surface climate simulation of the Community Climate System Model, version 4 (CCSM4) compared to CCSM3, and assesses new earth system features of CLM4 ...

David M. Lawrence; Keith W. Oleson; Mark G. Flanner; Christopher G. Fletcher; Peter J. Lawrence; Samuel Levis; Sean C. Swenson; Gordon B. Bonan

2012-04-01T23:59:59.000Z

169

Patterns of Land Surface Errors and Biases in the Global Forecast System  

Science Conference Proceedings (OSTI)

One year’s worth of Global Forecast System (GFS) predictions of surface meteorological variables (wind speed, air temperature, dewpoint temperature, sea level pressure) are validated for land-based stations over the entire planet for forecasts ...

David Werth; Alfred Garrett

2011-05-01T23:59:59.000Z

170

The Role of the Land Surface Background State in Climate Predictability  

Science Conference Proceedings (OSTI)

Skill in ensemble-mean dynamical seasonal climate hindcasts with a coupled land–atmosphere model and specified observed sea surface temperature is compared to that for long multidecade integrations of the same model where the initial conditions ...

Paul A. Dirmeyer

2003-06-01T23:59:59.000Z

171

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

172

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

173

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

174

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

175

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

176

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

177

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

178

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

179

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

180

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

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

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

182

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

183

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

184

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

185

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

186

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

187

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

188

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

189

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

190

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

191

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

192

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

193

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

194

Quantifying Land Surface Temperature Variability for Two Sahelian Mesoscale Regions during the Wet Season  

Science Conference Proceedings (OSTI)

Land–atmosphere feedbacks play an important role in the weather and climate of many semiarid regions. These feedbacks are strongly controlled by how the surface responds to precipitation events, which regulate the return of heat and moisture to ...

Martin G. De Kauwe; Christopher M. Taylor; Philip P. Harris; Graham P. Weedon; Richard. J. Ellis

2013-10-01T23:59:59.000Z

195

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

196

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

197

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

198

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

199

The Relationship between Land–Ocean Surface Temperature Contrast and Radiative Forcing  

Science Conference Proceedings (OSTI)

Previous work has demonstrated that observed and modeled climates show a near-time-invariant ratio of mean land to mean ocean surface temperature change under transient and equilibrium global warming. This study confirms this in a range of ...

F. Hugo Lambert; Mark J. Webb; Manoj M. Joshi

2011-07-01T23:59:59.000Z

200

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

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

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

202

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

203

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

204

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

205

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 ...

206

Forward-Looking Assimilation of MODIS-Derived Snow-Covered Area into a Land Surface Model  

Science Conference Proceedings (OSTI)

Snow cover over land has a significant impact on the surface radiation budget, turbulent energy fluxes to the atmosphere, and local hydrological fluxes. For this reason, inaccuracies in the representation of snow-covered area (SCA) within a land ...

Benjamin F. Zaitchik; Matthew Rodell

2009-02-01T23:59:59.000Z

207

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

208

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

209

Principal Components of Multi-Frequency Microwave Land Surface Emissivities. Part 1: Estimation Under Clear and Precipitating Conditions  

Science Conference Proceedings (OSTI)

The upcoming Global Precipitation Measurement (GPM) mission will provide considerably more over-land observations over complex terrain, high elevation river basins and cold surfaces, necessitating an improved assessment of the microwave land ...

F. Joseph Turk; Ziad S. Haddad; Yalei You

210

Area-Averaged Surface Fluxes in a Semiarid Region with Partly Irrigated Land: Lessons Learned from EFEDA  

Science Conference Proceedings (OSTI)

The European Field Experiment in a Desertification-Threatened Area (EFEDA) provides a comprehensive land surface dataset for a semiarid Mediterranean environment with natural vegetation and cultivated dry and irrigated land. This paper discusses ...

M. Anna Osann Jochum; Hendrik A. R. de Bruin; Albert A. M. Holtslag; Alfonso Calera Belmonte

2006-06-01T23:59:59.000Z

211

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

212

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

213

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

214

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

215

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

216

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

217

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

218

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

219

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

220

Analysis of Spurious Surface Temperature at the Atmosphere–Land Interface and a New Method to Solve the Surface Energy Balance Equation  

Science Conference Proceedings (OSTI)

Solving the surface energy balance equation is the most important task when combining an atmospheric model and a land surface model. However, while the surface energy balance equation determines the interface temperature between the models, this ...

Hirofumi Tomita

2009-06-01T23:59:59.000Z

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

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

222

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

223

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

224

INDICATION OF INSENSITIVITY OF PLANETARY WEATHERING BEHAVIOR AND HABITABLE ZONE TO SURFACE LAND FRACTION  

Science Conference Proceedings (OSTI)

It is likely that unambiguous habitable zone terrestrial planets of unknown water content will soon be discovered. Water content helps determine surface land fraction, which influences planetary weathering behavior. This is important because the silicate-weathering feedback determines the width of the habitable zone in space and time. Here a low-order model of weathering and climate, useful for gaining qualitative understanding, is developed to examine climate evolution for planets of various land-ocean fractions. It is pointed out that, if seafloor weathering does not depend directly on surface temperature, there can be no weathering-climate feedback on a waterworld. This would dramatically narrow the habitable zone of a waterworld. Results from our model indicate that weathering behavior does not depend strongly on land fraction for partially ocean-covered planets. This is powerful because it suggests that previous habitable zone theory is robust to changes in land fraction, as long as there is some land. Finally, a mechanism is proposed for a waterworld to prevent complete water loss during a moist greenhouse through rapid weathering of exposed continents. This process is named a 'waterworld self-arrest', and it implies that waterworlds can go through a moist greenhouse stage and end up as planets like Earth with partial ocean coverage. This work stresses the importance of surface and geologic effects, in addition to the usual incident stellar flux, for habitability.

Abbot, Dorian S.; Ciesla, Fred J. [Department of the Geophysical Sciences, University of Chicago, 5734 South Ellis Avenue, Chicago, IL 60637 (United States); Cowan, Nicolas B., E-mail: abbot@uchicago.edu [Center for Interdisciplinary Exploration and Research in Astrophysics (CIERA) and Department of Physics and Astronomy, Northwestern University, 2131 Tech Drive, Evanston, IL 60208 (United States)

2012-09-10T23:59:59.000Z

225

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

226

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

227

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

228

Quantifying Land Surface Temperature Variability for Two Sahelian Mesoscale Regions during the Wet Season  

Science Conference Proceedings (OSTI)

Land-atmosphere feedbacks play an important role in the weather and climate of many semi-arid regions. These feedbacks are strongly controlled by how the surface responds to precipitation events, which regulate the return of heat and moisture to ...

Martin G. De Kauwe; Christopher M. Taylor; Philip P. Harris; Graham P. Weedon; Richard J. Ellis

229

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

230

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

231

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

232

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

233

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

234

The Impact of Land Cover Change on Surface Energy and Water Balance in Mato Grosso, Brazil  

Science Conference Proceedings (OSTI)

The sensitivity of surface energy and water fluxes to recent land cover changes is simulated for a small region in northern Mato Grosso, Brazil. The Simple Biosphere Model (SiB2) is used, driven by biophysical parameters derived from the Moderate ...

Julia Pongratz; Lahouari Bounoua; Ruth S. DeFries; Douglas C. Morton; Liana O. Anderson; Wolfram Mauser; Carlos A. Klink

2006-10-01T23:59:59.000Z

235

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

236

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

237

Effect of the surface on the secondary structure of soft landed peptide ions  

SciTech Connect

Ion soft landing (SL) enables highly selective modification of substrates for applications in materials science, nanotechnology and biology. Our previous study showed that SL can be used for preparation of conformation-selected peptide arrays. Here we present a first study of the effect of the surface on the secondary structures of peptides soft-landed onto self-assembled monolayer surfaces (SAMs). Conformations of soft-landed peptide ions were examined using the newly constructed instrument that enables in situ infrared reflection absorption spectroscopy (IRRAS) characterization of surfaces during and after ion deposition. Polyalanine peptides, Ac-AnK and Ac-KAn (n=7, 15), that have been extensively studied both in solution and in the gas phase were used as model systems in this study. We demonstrate that physical and chemical properties of SAM surfaces have a strong effect on the conformations of soft-landed peptides ions. For example, deposition of the ?-helical [Ac-A15K+H]+ ion on the CH3-terminated (HSAM) surface results in immobilization of both the ?- and 310-helical conformations. In contrast, a significant fraction of Ac-A15K molecules are present in the ?-sheet conformation on the CF3- (FSAM) and COOH-terminated (COOH-SAM) surfaces. We show that the kinetic energy of the polyalanine ion, the charge, and the initial conformation have only a minor effect on the conformation of deposited species suggesting that the interaction between the molecule and the surface plays a major role in determining the secondary structures of immobilized polyalanines. This study demonstrates that SL of mass-selected ions can be utilized for obtaining fundamental understanding of the intrinsic properties of biomolecules and surfaces responsible for conformational changes upon adsorption.

Hu, Qichi; Wang, Peng; Laskin, Julia

2010-10-01T23:59:59.000Z

238

Mourning dove differential use of reclaimed surface-mined lands in east-central Texas  

E-Print Network (OSTI)

The mourning dove (Zeniada macroura) is the most abundant and widespread North American game bird despite the fact that declines have been observed throughout much of the United States. The U.S. Fish and Wildlife Service's Central Management Unit has experienced a significant decline in the number of mourning doves heard during the Mourning Dove Call Count for the past 10- and 34-year periods. Land-use changes and loss of mourning dove habitat is often cited as reasons for these declines. Fourteen transects in different aged reclaimed surface-mined lands and in different land-use types were monitored during morning and evening hours monthly for 1 year to examine differential use by mourning doves. Mourning dove densities were determined for transects representing different aged reclaimed lands and land uses. Vegetation measurements including obstruction of vision, plant height, percent bare ground, and percent canopy cover of dominant grass, forb, and woody species were taken at systematically selected points along the transects in summer, fall, and spring. A Pearson's product-moment correlation and regression analysis was used to examine relationships between dove densities and vegetation measurements. Significant differences (P < 0.05) were found in dove densities among different aged reclaimed lands in summer, fall, and spring. Younger age classes (lands reclaimed 0-5 or 6-10 years prior to initiation of this study) and 1 of 2 controls had higher dove densities than other transects. Percent bare ground explained differences in dove densities. Plant height and obstruction of vision were negatively correlated with dove densities during spring months. Significant differences were seen in dove densities on different reclamation types. Newly reclaimed land and areas of native pasture had higher dove densities than other reclamation or vegetation types. Structural measurements explained at least part of the variation in dove densities between different reclamation types.

Huff, James Eric

2001-01-01T23:59:59.000Z

239

The Prediction of Nearshore Wind-induced Surface Currents from Wind Velocities Measured at Nearby Land Stations  

Science Conference Proceedings (OSTI)

This paper aims to find a fast and efficient way to predict the wind-induced components of surface currents in a nearshore coastal area of several hundred square kilometers from wind velocities measured at nearby land stations. Ocean Surface ...

Betty Ng

1993-08-01T23:59:59.000Z

240

Operational Implementation of the ISBA Land Surface Scheme in the Canadian Regional Weather Forecast Model. Part I: Warm Season Results  

Science Conference Proceedings (OSTI)

The summertime improvement resulting from the operational implementation of a new surface modeling and assimilation strategy into the Canadian regional weather forecasting system is described in this study. The surface processes over land are ...

Stéphane Bélair; Louis-Philippe Crevier; Jocelyn Mailhot; Bernard Bilodeau; Yves Delage

2003-04-01T23:59:59.000Z

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

Increase in Near-Surface Atmospheric Moisture Content due to Land Use Changes: Evidence from the Observed Dewpoint Temperature Data  

Science Conference Proceedings (OSTI)

Land use change can significantly affect root zone soil moisture, surface energy balance, and near-surface atmospheric temperature and moisture content. During the second half of the twentieth century, portions of the North American Great Plains ...

Rezaul Mahmood; Kenneth G. Hubbard; Ronnie D. Leeper; Stuart A. Foster

2008-04-01T23:59:59.000Z

242

Toward an Integrated Land–Ocean Surface Skin Temperature Analysis from the Variational Assimilation of Infrared Radiances  

Science Conference Proceedings (OSTI)

Geostationary Operational Environmental Satellite (GOES)-East and -West window channel radiances are directly assimilated using a 1D variational technique, providing surface skin temperature (Ts) estimates over all surface types (land, water, or ...

Louis Garand

2003-05-01T23:59:59.000Z

243

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

244

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

245

Charge Retention by Gold Clusters on Surfaces Prepared Using Soft Landing of Mass Selected Ions  

Science Conference Proceedings (OSTI)

Monodisperse gold clusters have been prepared on surfaces in different charge states through soft landing of mass-selected ions. Ligand-stabilized gold clusters were prepared in methanol solution by reduction of chloro(triphenylphosphine)gold(I) with borane tert-butylamine complex in the presence of 1,3-bis(diphenylphosphino)propane. Electrospray ionization was used to introduce the clusters into the gas-phase and mass-selection was employed to isolate a single ionic cluster species (Au11L53+, L = 1,3-bis(diphenylphosphino)propane) which was delivered to surfaces at well controlled kinetic energies. Using in-situ time of flight secondary ion mass spectrometry (TOF-SIMS) it is demonstrated that the Au11L53+ cluster retains its 3+ charge state when soft landed onto the surface of a 1H,1H,2H,2H-

Johnson, Grant E.; Priest, Thomas A.; Laskin, Julia

2012-01-24T23:59:59.000Z

246

Distributions of Surface-Layer Buoyancy Versus Lifting Condensation Level over a Heterogeneous Land Surface  

Science Conference Proceedings (OSTI)

Onset and coverage of small cumulus clouds depend on the relative abundance of surface-layer air parcels possessing favourable buoyancy and moisture—two variables that are coupled through the surface energy budget. This abundance is described ...

Kelly Schrieber; Roland Stull; Qing Zhang

1996-04-01T23:59:59.000Z

247

An Approach for the Representation of Surface Heterogeneity in Land Surface Models. Part I: Theoretical Framework  

Science Conference Proceedings (OSTI)

In this paper, a theoretical framework is described for the representation of surface heterogeneity within complex biophysical surface schemes for use in climate models. The methodology adopts aspects of the mosaic approach and the statistical–...

Filippo Giorgi

1997-08-01T23:59:59.000Z

248

Surface mine pollution abatement and land use impact investigation. Volume III. Considerations of post mining land use, mine inventory and abatement plan for the quicksand watershed. Final report  

SciTech Connect

Volume III of the five volume series primarily presents three general topics. The first of these is a discussion of considerations relating to post-mining land use. Following this discussion, an evaluation of factors relating to more important environmental and land use impacts of the surface mining industry in Eastern Kentucky is presented. The last topic presents a mine inventory of the 33 surface mines located in the Quicksand Watershed in Breathitt County, Kentucky. Surface mines have several environmental and land use impacts. Those considered in the discussion which are of special importance to Eastern Kentucky are hydrologic influence, sedimentation, spoil bank stability, the impact on the public road system and mine access roads, and haul road abandonment. A number of major conclusions of general applicability are given along with some conclusions specifically related to the Quicksand Watershed.

1975-08-01T23:59:59.000Z

249

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

250

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

251

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

252

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

253

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

Science Conference Proceedings (OSTI)

In this study, the authors incorporate an operational-like irrigation scheme into the Noah land surface model as part of the Weather Research and Forecasting Model (WRF). A series of simulations, with and without irrigation, is conducted over the ...

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

2013-06-01T23:59:59.000Z

254

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

255

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

256

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

257

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

258

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

259

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

260

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

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

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

262

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

263

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

264

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

265

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

266

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

267

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

268

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

269

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

270

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

271

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

272

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

273

The Simulation of Surface Heat Fluxes in a Land Surface?Atmosphere Model  

Science Conference Proceedings (OSTI)

A modified soil-canopy-boundary layer model based on Ek and Mahrt is presented to simulate surface heat fluxes on a daily basis. The model is validated against independent published bare soil data from Agassiz, Canada, and observations taken over ...

Huang Xinmei; T. J. Lyons

1995-05-01T23:59:59.000Z

274

Evaluation of land ownership, lease status, and surface features in five geopressured geothermal prospects  

DOE Green Energy (OSTI)

This study was accomplished for the purpose of gathering information pertaining to land and lease ownership, surface features and use and relevant environmental factors in the Lake Theriot (West and East), Kaplan, Bayou Hebert and Freshwater Bayou geopressured geothermal prospects in Louisiana, and the Blessing geopressured geothermal prospect in Texas. This information and recommendations predicated upon it will then be used to augment engineering and geological data utilized to select geopressured geothermal test well sites within the prospects. The five geopressured geothermal prospects are briefly described and recommendations given.

Hackenbracht, W.N.

1981-05-01T23:59:59.000Z

275

1606 JOURNAL OF APPLIED METEOROLOGY AND CLIMATOLOGY VOLUME 46 Dynamic Surface Interface Exchanges of Mercury: A Review and Compartmentalized Modeling Framework  

E-Print Network (OSTI)

This paper presents a review of recent natural surface mercury exchange research in the context of a new modeling framework. The literature indicates that the mercury biogeochemical flux is more dynamic than the current models predict, with interacting multimedia storage and processes. Although several natural mercury emissions models have been created and incorporated into air quality models (AQMs), none are coupled with air quality models on a mass balance basis, and all lack the capacity to explain processes that involve the transport of mercury across atmosphere–surface media concentration gradients. Existing natural mercury emission models treat the surface as both an infinite source and infinite sink for emissions and deposition, respectively, and estimate emissions through the following three pathways: soil, vegetation, and surface waters. The use of these three transport pathways, but with compartmentalized surface storage in a surface–vegetation–atmosphere transport (SVAT) resistance model, is suggested. Surface water fluxes will be modeled using a two-film diffusion model coupled to a surface water photochemical model. This updated framework will allow both the parameterization of the transport of mercury across atmosphere– surface media concentration gradients and the accumulation/depletion of mercury in the surface media. However, several key parameters need further experimental verification before the proposed modeling framework can be implemented in an AQM. These include soil organic mercury interactions, bioavailability, cuticular transport of mercury, atmospheric surface compensation points for different vegetation species, and enhanced soil diffusion resulting from pressure perturbations. 1.

Jesse O. Bash; Patricia Bresnahan; David; R. Miller

2006-01-01T23:59:59.000Z

276

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

277

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

278

Evaluation of the Surface Climatology over the Conterminous United States in the North American Regional Climate Change Assessment Program Hindcast Experiment Using a Regional Climate Model Evaluation System  

Science Conference Proceedings (OSTI)

Surface air temperature, precipitation, and insolation over the conterminous United States region from the North American Regional Climate Change Assessment Program (NARCCAP) regional climate model (RCM) hindcast study are evaluated using the Jet ...

Jinwon Kim; Duane E. Waliser; Chris A. Mattmann; Linda O. Mearns; Cameron E. Goodale; Andrew F. Hart; Dan J. Crichton; Seth McGinnis; Huikyo Lee; Paul C. Loikith; Maziyar Boustani

2013-08-01T23:59:59.000Z

279

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

280

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.

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

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

282

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

283

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

284

ALTERING CLIMATE Basic Climatology  

E-Print Network (OSTI)

of painted surfaces, including cars Deterioration of stone, particularly marble and limestone Corrosion energy: wind, solar, geothermal Electric vehicles Restore damaged environments Limestone may be added

285

Schemes for Parameterizing Evaporation from a Non-Plant-Covered Surface and Their Impact on Partitioning the Surface Energy in Land?Air Exchange Parameterization  

Science Conference Proceedings (OSTI)

The correct simulation of the sensible and latent heat fluxes from a non-plant-covered surface is very important in designing the surface scheme for modeling the processes in the land?air exchange. However, using different bare soil evaporation ...

Dragutin T. Mihailovi?; Borivoj Rajkovi?; Branislava Lali?; Ljiljana Deki?

1995-11-01T23:59:59.000Z

286

Distribution of Landscape Types in the Global Historical Climatology Network  

Science Conference Proceedings (OSTI)

The Global Historical Climate Network version 2 (GHCNv.2) surface temperature dataset is widely used for reconstructions such as the global average surface temperature (GAST) anomaly. Because land use and land cover (LULC) affect temperatures, it ...

Laure M. Montandon; Souleymane Fall; Roger A. Pielke Sr.; Dev Niyogi

2011-02-01T23:59:59.000Z

287

Reclamation of abandoned surface coal mined land using flue gas desulfurization products  

SciTech Connect

Details are given of a field-scale research project where the Fleming site, in Ohio, of highly degraded and acid-forming abandoned surface coal-mined land, was reclaimed using a dry flue gas desulfurization product from an atmospheric fluidized bed combustion burner at a General Motors plant Pontiac, MI, which burned eastern Ohio coal and used dolomitic limestone for desulfurization. Plots were seeded with a mixture of grasses, wheat and clover, in 1994 and soil and water samples were analysed in 1995 and in 2009. It was found that FGD-treated plots promoted good regenerative growth, similar to that in plots using more concentrated re-soil material. The FGD treatment also greatly improved overall water quality. 3 figs., 4 tabs.

Chen, L.; Kost, D.; Dick, W.A. [Ohio State University, OH (United States)

2009-07-01T23:59:59.000Z

288

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

289

Determining Robust Impacts of Land-Use-Induced Land Cover Changes on Surface Climate over North America and Eurasia: Results from the First Set of LUCID Experiments  

Science Conference Proceedings (OSTI)

The project Land-Use and Climate, Identification of Robust Impacts (LUCID) was conceived to address the robustness of biogeophysical impacts of historical land use–land cover change (LULCC). LUCID used seven atmosphere–land models with a common ...

Nathalie de Noblet-Ducoudré; Juan-Pablo Boisier; Andy Pitman; G. B. Bonan; V. Brovkin; Faye Cruz; C. Delire; V. Gayler; B. J. J. M. van den Hurk; P. J. Lawrence; M. K. van der Molen; C. Müller; C. H. Reick; B. J. Strengers; A. Voldoire

2012-05-01T23:59:59.000Z

290

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.

291

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

292

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

293

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

294

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

295

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

296

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

297

Surface and atmospheric controls on the onset of moist convection over land  

Science Conference Proceedings (OSTI)

The onset of moist convection over land is investigated using a conceptual approach with a slab boundary layer model. We here determine the essential factors for the onset of boundary layer clouds over land, and study their relative importance. ...

Pierre Gentine; Albert A. M. Holtslag; Fabio D’Andrea; Michael Ek

298

Impacts of feral hogs on reclaimed surface-mined lands in eastern Texas: a management perspective  

E-Print Network (OSTI)

During the last decade, surface lignite mines in eastern Texas have experienced damage to reclaimed lands by feral hogs (Sus scrota). Specifically, feral hogs have caused damage to vegetative plantings used in the reclamation process of surface lignite mines. In addition to vegetative losses, erosion control problems and water quality impacts have been noted. Box and corral traps were evaluated for their effectiveness in capturing feral hogs. Six male and 10 female hogs were radiomonitored from January 1998 - January 1999 at Big Brown Lignite Mine in Freestone County, Texas. Annual range size, habitat use, habitat selection, and diel movements of the feral hogs were determined using a geographic information system. Corral traps were more efficient than box traps in capturing feral hogs (P reclaimed wildlife vegetation plantings and unmixed riparian corridors on the mine site. Screening cover and free water were important landscape features that influenced hog movements. Feral hogs moved greater distances from free water and screening cover deleing nighttime hours. In addition, seasonal effects of distance from these landscape features were significant. Feral hogs traveled greater distances from both gee water and screening during winter and spring, but during fall and summer months, they remained closer (P < 0.0001) to water and cover sources. Based on the information obtained from the data analysis, management strategies for reducing hog impacts at the mine site were developed. In order to decrease feral hog impacts on the mine site, use of corral traps, box traps, and vegetation management was recommended.

Mersinger, Robert C.

1999-01-01T23:59:59.000Z

299

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

300

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

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


301

A 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

302

Modeling Soil Moisture and Surface Flux Variability with an Untuned Land Surface Scheme: A Case Study from the Southern Great Plains 1997 Hydrology Experiment  

Science Conference Proceedings (OSTI)

The Parameterization for Land–Atmosphere–Cloud Exchange (PLACE), a typical surface–vegetation–atmosphere transfer (SVAT) parameterization, was used in a case study of a 2500 km2 area in southwestern Oklahoma for 9–16 July 1997. The research ...

Karen I. Mohr; James S. Famiglietti; Aaron Boone; Patrick J. Starks

2000-04-01T23:59:59.000Z

303

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

304

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

305

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

306

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

307

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

308

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...

309

Evaluating Surface Water Cycle Simulated by the Australian Community Land Surface Model (CABLE) across Different Spatial and Temporal Domains  

Science Conference Proceedings (OSTI)

The terrestrial water cycle in the Australian Community Atmosphere Biosphere Land Exchange (CABLE) model has been evaluated across a range of temporal and spatial domains. A series of offline experiments were conducted using the forcing data from ...

Huqiang Zhang; Bernard Pak; Ying Ping Wang; Xinyao Zhou; Yongqiang Zhang; Liang Zhang

2013-08-01T23:59:59.000Z

310

Nesting ecology of dickcissels on reclaimed surface-mined lands in Freestone County, Texas  

E-Print Network (OSTI)

Surface mining and subsequent reclamation often results in the establishment of large areas of grassland that can benefit wildlife. Grasslands have declined substantially over the last 150 years, resulting in declines of many grassland birds. The dickcissel (Spiza americana), a neotropical migrant, is one such bird whose numbers have declined in the last 30 years due to habitat loss, increased nest predation and parasitism, and over harvest (lethally controlled as an agricultural pest on its wintering range in Central and South America). Reclaimed surface-mined lands have been documented to provide important breeding habitat for dickcissels in the United States, emphasizing the importance of reclamation efforts. Objectives were to understand specific aspects of dickcissel nesting ecology (i.e., nest-site selection, nest success, and nest parasitism, and identification of nest predators) on 2 spatial scales on TXU Energy?s Big Brown Mine, near Fairfield, Texas, and to subsequently provide TXU Energy with recommendations to improve reclaimed areas as breeding habitat for dickcissels. I examined the influence of nest-site vegetation characteristics and the effects of field-level spatial factors on dickcissel nesting ecology on 2 sites reclaimed as wildlife habitat. Additionally, I developed a novel technique to identify predators at active nests during the 2003 field season. During 2002?2003, 119 nests were monitored. On smaller spatial scales, dickcissels were likely to select nest-sites with low vegetation, high densities of bunchgrasses and tall forbs, and areas with higher clover content. Probability of nest success increased with nest heights and vegetation heights above the nest, characteristics associated with woody nesting substrates. Woody nesting substrates were selected and bunchgrasses were avoided. Oak (Quercus spp.) saplings remained an important nesting substrate throughout the breeding season. On a larger scale, nest-site selection was likely to occur farther from wooded riparian areas and closer to recently-reclaimed areas. Nest parasitism was likely to occur near roads and wooded riparian areas. Results suggest reclaimed areas could be improved by planting more bunchgrasses, tall forbs (e.g., curly-cup gumweed [Grindelia squarrosa] and sunflower [Helianthus spp.]), clover (Trifolium spp.), and oaks (a preferred nesting substrate associated with higher survival rates). Larger-scale analysis suggests that larger tracts of wildlife areas should be created with wooded riparian areas comprising a minimal portion of a field?s edge.

Dixon, Thomas Pingul

2004-12-01T23:59:59.000Z

311

The Impact of Land Surface and Atmospheric Initialization on Seasonal Forecasts with CCSM  

Science Conference Proceedings (OSTI)

Series of forecast experiments for two seasons investigate the impact of specifying realistic initial states of the land in conjunction with the observed states of the ocean and atmosphere while using the National Center for Atmospheric Research (...

Daniel A. Paolino; James L. Kinter III; Ben P. Kirtman; Dughong Min; David M. Straus

2012-02-01T23:59:59.000Z

312

Satellite-Scale Snow Water Equivalent Assimilation into a High-Resolution Land Surface Model  

Science Conference Proceedings (OSTI)

Four methods based on the ensemble Kalman filter (EnKF) are tested to assimilate coarse-scale (25 km) snow water equivalent (SWE) observations (typical of passive microwave satellite retrievals) into finescale (1 km) land model simulations. ...

Gabriëlle J. M. De Lannoy; Rolf H. Reichle; Paul R. Houser; Kristi R. Arsenault; Niko E. C. Verhoest; Valentijn R. N. Pauwels

2010-04-01T23:59:59.000Z

313

Interactions between the Land Surface and Mesoscale Rainfall Variability during HAPEX-Sahel  

Science Conference Proceedings (OSTI)

The Hydrological Atmospheric Pilot Experiment in the Sahel (HAPEX-Sahel) was designed to investigate land–atmosphere interactions in the semiarid conditions of southwest Niger. During the intensive observation period (IOP) in 1992, a pronounced ...

Christopher M. Taylor; Frédérique Saïd; Thierry Lebel

1997-09-01T23:59:59.000Z

314

Recolonization of surface-mined lands by pocket gophers (Geomys breviceps) in East Texas Post Oak Savannah  

E-Print Network (OSTI)

Surface mining involves the use of heavy equipment that would theoretically create underground vibrations sensed by pocket gophers. To determine if vibrations cause pocket gopher movement away from areas being mined, gopher movements were monitored in a hay field adjacent to an active mine pit on Big Brown Mine in Freestone County, Texas. Gophers were live-trapped in summer 2000 prior to mining activity, injected subcutaneously with a passive integrated transponder (PIT) tag, and released. Coordinates of each capture location were recorded. After mining began and spoil piles were established adjacent to the field, re-trapping was conducted. Upon capture each pocket gopher was scanned for a PIT tag and newly caught animals were tagged. Location coordinates were recorded to determine movement between capture sites. Of the 58 gophers captured and tagged, 9 individuals were recaptured. Pocket gophers did not appear to move away from mining activity, so they might have been adversely affected. However, the number of individuals in the population remained constant during the study, indicating there was no population effect. During January and February 2001, all remaining non-mined and reclaimed lands within the mine were surveyed for pocket gopher activity (mounds). Activity was found on non-mined land adjacent to reclaimed land but no activity was found on reclaimed land. Pocket gopher populations did not reestablish on reclaimed lands because of the removal of sandy soils and subsequent replacement with hard, loamy soils. If pocket gophers are desired on reclaimed lands, then it would be important to retain areas of topsoil containing at least 80% sand.

Gutierrez, Paula B

2001-01-01T23:59:59.000Z

315

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

SciTech Connect

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

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

2012-08-10T23:59:59.000Z

316

Global 4DVAR Assimilation and Forecast Experiments Using AMSU Observations over Land. Part II: Impacts of Assimilating Surface-Sensitive Channels on the African Monsoon during AMMA  

Science Conference Proceedings (OSTI)

Observations from Advanced Microwave Sounding Unit-A and -B (AMSU-A and -B) have been more intensively used over sea than over land because of large uncertainties about the land surface emissivity and the skin temperature. Several methods based ...

Fatima Karbou; Florence Rabier; Jean-Philippe Lafore; Jean-Luc Redelsperger; Olivier Bock

2010-02-01T23:59:59.000Z

317

Contribution of Land Use Changes to Near-Surface Air Temperatures during Recent Summer Extreme Heat Events in the Phoenix Metropolitan Area  

Science Conference Proceedings (OSTI)

The impact of 1973–2005 land use–land cover (LULC) changes on near-surface air temperatures during four recent summer extreme heat events (EHEs) are investigated for the arid Phoenix, Arizona, metropolitan area using the Weather Research and ...

Susanne Grossman-Clarke; Joseph A. Zehnder; Thomas Loridan; C. Sue B. Grimmond

2010-08-01T23:59:59.000Z

318

Noah-GEM and Land Data Assimilation System (LDAS) based downscaling of global reanalysis surface fields: Evaluations using observations from a CarboEurope agricultural site  

Science Conference Proceedings (OSTI)

This study provides the first assessment of the Noah and Noah-GEM (photosynthesis-based Gas exchange Evapotranspiration Model) land surface model using observations from the Avignon, France CarboEurope agricultural site during 2006 and 2007. Noah and ... Keywords: CarboEurope, Fluxnet, Land Data Assimilation System, Latent heat flux, Noah, Noah-GEM

Umarporn Charusombat; Dev Niyogi; SéBastien Garrigues; Albert Olioso; Olivier Marloie; Michael Barlage; Fei Chen; Michael Ek; Xuemei Wang; Zhiyong Wu

2012-08-01T23:59:59.000Z

319

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

320

Global 4DVAR Assimilation and Forecast Experiments Using AMSU Observations over Land. Part I: Impacts of Various Land Surface Emissivity Parameterizations  

Science Conference Proceedings (OSTI)

To improve the assimilation of Advanced Microwave Sounding Unit-A and -B (AMSU-A and -B) observations over land, three methods, based either on an estimation of the land emissivity or the land skin temperature directly from satellite observations,...

Fatima Karbou; Elisabeth Gérard; Florence Rabier

2010-02-01T23:59:59.000Z

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

An Evaluation of Satellite Remote Sensing Data Products for Land Surface Hydrology: Atmospheric Infrared Sounder  

Science Conference Proceedings (OSTI)

The skill of instantaneous Atmospheric Infrared Sounder (AIRS) retrieved near-surface meteorology, including surface skin temperature (Ts), air temperature (Ta), specific humidity (q), and relative humidity (RH), as well as model-derived surface ...

Craig R. Ferguson; Eric F. Wood

2010-12-01T23:59:59.000Z

322

Sensitivity of Model-Generated Daytime Surface Heat Fluxes over Snow to Land-Cover Changes  

Science Conference Proceedings (OSTI)

Snow cover can significantly suppress daytime temperatures by increasing the surface albedo and limiting the surface temperature to 0°C. The strength of this effect is dependent upon how well the snow can cover, or mask, the underlying surface. ...

John E. Strack; Roger A. Pielke Sr.; Jimmy Adegoke

2003-02-01T23:59:59.000Z

323

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

324

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

325

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

326

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

327

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

328

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

329

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

330

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

331

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

332

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

333

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

334

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

335

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

336

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

337

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

338

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

339

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

340

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

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

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

342

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

343

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

344

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

345

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

346

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

347

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

348

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

349

Estimating Spatial Variability in Atmospheric Properties over Remotely Sensed Land Surface Conditions  

Science Conference Proceedings (OSTI)

This paper investigates the spatial relationships between surface fluxes and near-surface atmospheric properties (AP), and the potential errors in flux estimation due to homogeneous atmospheric inputs over heterogeneous landscapes. A large-eddy ...

Giacomo Bertoldi; William P. Kustas; John D. Albertson

2008-08-01T23:59:59.000Z

350

The Representation of Arctic Soils in the Land Surface Model: The Importance of Mosses  

Science Conference Proceedings (OSTI)

Mosses dominate the surface cover in high northern latitudes and have the potential to play a key role in modifying the thermal and hydrologic regime of Arctic soils. These modifications in turn feed back to influence surface energy exchanges and ...

Jason Beringer; Amanda H. Lynch; F. Stuart Chapin III; Michelle Mack; Gordon B. Bonan

2001-08-01T23:59:59.000Z

351

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

352

Coverage Dependent Charge Reduction of Cationic Gold Clusters on Surfaces Prepared Using Soft Landing of Mass-selected Ions  

Science Conference Proceedings (OSTI)

The ionic charge state of monodisperse cationic gold clusters on surfaces may be controlled by selecting the coverage of mass-selected ions soft landed onto a substrate. Polydisperse diphosphine-capped gold clusters were synthesized in solution by reduction of chloro(triphenylphosphine)gold(I) with borane tert-butylamine in the presence of 1,3-bis(diphenylphosphino)propane. The polydisperse gold clusters were introduced into the gas phase by electrospray ionization and mass selection was employed to select a multiply charged cationic cluster species (Au11L53+, m/z = 1409, L = 1,3-bis(diphenylphosphino)propane) which was delivered to the surfaces of four different self-assembled monolayers on gold (SAMs) at coverages of 1011 and 1012 clusters/mm2. Employing the spatial profiling capabilities of in-situ time-of-flight secondary ion mass spectrometry (TOF-SIMS) it is shown that, in addition to the chemical functionality of the monolayer (as demonstrated previously: ACS Nano, 2012, 6, 573) the coverage of cationic gold clusters on the surface may be used to control the distribution of ionic charge states of the soft-landed multiply charged clusters. In the case of a 1H,1H,2H,2H-perfluorodecanethiol SAM (FSAM) almost complete retention of charge by the deposited Au11L53+ clusters was observed at a lower coverage of 1011 clusters/mm2. In contrast, at a higher coverage of 1012 clusters/mm2, pronounced reduction of charge to Au11L52+ and Au11L5+ was observed on the FSAM. When soft landed onto 16- and 11-mercaptohexadecanoic acid surfaces on gold (16,11-COOH-SAMs), the mass-selected Au11L53+ clusters exhibited partial reduction of charge to Au11L52+ at lower coverage and additional reduction of charge to both Au11L52+ and Au11L5+ at higher coverage. The reduction of charge was found to be more pronounced on the surface of the shorter (thinner) C11 than the longer (thicker) C16-COOH-SAM. On the surface of the 1-dodecanethiol (HSAM) monolayer, the most abundant charge state was found to be Au11L52+ at lower coverage and Au11L5+ at higher coverage, respectively. A coverage-dependent electron tunneling mechanism is proposed to account for the observed reduction of charge of mass-selected multiply charged gold clusters soft landed on SAMs. The results demonstrate that one of the critical parameters that influence the chemical and physical properties of supported metal clusters, ionic charge state, may be controlled by selecting the coverage of charged species soft landed onto surfaces.

Johnson, Grant E.; Priest, Thomas A.; Laskin, Julia

2012-11-29T23:59:59.000Z

353

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

354

An Approach for the Representation of Surface Heterogeneity in Land Surface Models. Part II: Validation and Sensitivity Experiments  

Science Conference Proceedings (OSTI)

This paper discusses a series of sensitivity experiments aimed at testing the surface heterogeneity representation proposed in the companion paper by Giorgi. When driven by observed climatic forcings at three locations and run in point mode, the ...

Filippo Giorgi

1997-08-01T23:59:59.000Z

355

Comparison of avian species diversity and densities on non-mined and reclaimed surface-mined land in east-central Texas  

E-Print Network (OSTI)

Surface mining often changes the native landscape and vegetation of an area. Reclamation is used to counter this change, with the goal of restoring the land to its original pre-mined state. The process of reclamation creates early successional-stage lands, such as grasslands, shrublands, and wetlands, attracting new plant and animal species to the area. I compared avian species density (number of individuals/ha), diversity (H'), and richness (number of species/ha) on reclaimed and non-mined lands at TXU's Big Brown Mine in Fairfield, Texas. I also compared my results to those of a previous study conducted 25 years earlier. Avian counts were conducted using a fixedradius point-count method on 240 points placed in four different vegetation types and in four land-age groups (time since being reclaimed). Vegetation was measured both locally, and at a landscape level. Overall bird species density did not exhibit a clear relationship on non-mined versus reclaimed land. Overall bird species diversity was greater on non-mined lands, whereas overall species richness was greater on reclaimed lands. My results demonstrated a lower mean/point bird density and higher mean/point bird diversity than were found 25 years earlier. Different nesting guilds occurred on the reclaimed lands than occurred on the non-mined lands. Results suggested different species were attracted to the several successional stages of reclaimed lands over the nonmined lands, which consisted of climax vegetation. The different successional stages of reclaimed lands increased overall diversity and richness of the landscape as a whole. Five bird species of conservation concern were observed in the study, all of which occurred on reclaimed land. Four of the five species primarily occurred on reclaimed lands. Future land management should include conserving different successional-stage lands to increase overall biotic diversity and richness of mined land, preserving reclaimed habitat for species of concern, and educating future private landowners on the importance of maintaining vegetative and bird species diversity.

Wenzel, Dawn Nicole

2006-08-01T23:59:59.000Z

356

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...

357

Surface Contribution to Planetary Albedo Variability in Cryosphere Regions  

Science Conference Proceedings (OSTI)

Climatological planetary albedo obtained from the International Satellite Cloud Climatology Project (ISCCP) D-series flux dataset is broken down into contributions from the surface and atmosphere in cryosphere regions. The atmosphere accounts for ...

Xin Qu; Alex Hall

2005-12-01T23:59:59.000Z

358

Estimation of Land Surface Heat Fluxes over the Tibetan Plateau Using GMS Data  

Science Conference Proceedings (OSTI)

A Surface Energy Balance System (SEBS) originally developed for the NOAA Advanced Very High Resolution Radiometer was applied to Geostationary Meteorological Satellite (GMS)-5 Visible/Infrared Spin-Scan Radiometer data that were supplemented with ...

Yuichiro Oku; Hirohiko Ishikawa; Zhongbo Su

2007-02-01T23:59:59.000Z

359

A Global Database of Land Surface Parameters at 1-km Resolution in Meteorological and Climate Models  

Science Conference Proceedings (OSTI)

Ecoclimap, a new complete surface parameter global dataset at a 1-km resolution, is presented. It is intended to be used to initialize the soil–vegetation–atmosphere transfer schemes (SVATs) in meteorological and climate models (at all horizontal ...

Valéry Masson; Jean-Louis Champeaux; Fabrice Chauvin; Christelle Meriguet; Roselyne Lacaze

2003-05-01T23:59:59.000Z

360

An Analytical Hydrological Model for the Study of Scaling Issues in Land Surface Modeling  

Science Conference Proceedings (OSTI)

Besides the atmospheric forcing such as solar radiation input and precipitation, the heterogeneity of the surface cover also plays an important role, especially in the distribution characteristics of the latent heat flux (LE). In this study, ...

Diandong Ren; Ann Henderson-Sellers

2006-12-01T23:59:59.000Z

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

Global Soil Moisture from Satellite Observations, Land Surface Models, and Ground Data: Implications for Data Assimilation  

Science Conference Proceedings (OSTI)

Three independent surface soil moisture datasets for the period 1979–87 are compared: 1) global retrievals from the Scanning Multichannel Microwave Radiometer (SMMR), 2) global soil moisture derived from observed meteorological forcing using the ...

Rolf H. Reichle; Randal D. Koster; Jiarui Dong; Aaron A. Berg

2004-06-01T23:59:59.000Z

362

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

Science Conference Proceedings (OSTI)

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

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

2013-06-01T23:59:59.000Z

363

Retrieving Winds in the Surface Layer over Land Using an Airborne Doppler Lidar  

Science Conference Proceedings (OSTI)

Airborne Doppler wind lidars are increasingly being used to measure winds in the lower atmosphere at higher spatial resolution than ever before. However, wind retrieval in the range gates closest to the earth’s surface remains problematic. When a ...

K. S. Godwin; S. F. J. De Wekker; G. D. Emmitt

2012-04-01T23:59:59.000Z

364

Simulation of Seasonal Sea Surface Temperature Variations In the North Pacific  

Science Conference Proceedings (OSTI)

North Pacific sea surface temperature variations during the cooling season are simulated using climatological surface boat flux data in conjunction with a deepening mixed layer as determined by a convective adjustment model. Climatological ...

James R. Miller

1980-05-01T23:59:59.000Z

365

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

366

Analytical Land–Atmosphere Radiometer Model  

Science Conference Proceedings (OSTI)

Conversion of radiometric land surface temperature (?r) to an equivalent isothermal (aerodynamic) surface temperature (?i) is important in balancing the land surface energy budget with satellite-based ?r measurements. An analytical land–...

Ayman Suleiman; Richard Crago

2002-02-01T23:59:59.000Z

367

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

368

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

369

Value of Incorporating Satellite-Derived Land Cover Data in MM5/PLACE for Simulating Surface Temperatures  

Science Conference Proceedings (OSTI)

The Parameterization for Land–Atmosphere–Cloud Exchange (PLACE) module is used within the Fifth-Generation Pennsylvania State University–National Center for Atmospheric Research Mesoscale Model (MM5) to determine the importance of individual land ...

Todd M. Crawford; David J. Stensrud; Franz Mora; James W. Merchant; Peter J. Wetzel

2001-10-01T23:59:59.000Z

370

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

371

Measuring the Global Distribution of Intense Convection over Land with Passive Microwave Radiometry  

Science Conference Proceedings (OSTI)

The global distribution of intense convective activity over land is shown to be measurable with satellite passive-microwave methods through a comparison of an empirical rain rate algorithm with a climatology of thunderstorm days for the months of ...

Roy W. Spencer; David A. Santek

1985-08-01T23:59:59.000Z

372

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

373

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

374

A Cooperative Atmosphere–Surface Exchange Study (CASES) Dataset for Analyzing and Parameterizing the Effects of Land Surface Heterogeneity on Area-Averaged Surface Heat Fluxes  

Science Conference Proceedings (OSTI)

A multiscale dataset that includes atmospheric, surface, and subsurface observations obtained from an observation network covering a region that has a scale order comparable to mesoscale and general circulation models is described and analyzed. ...

David N. Yates; Fei Chen; Margaret A. LeMone; Russell Qualls; Steven P. Oncley; Robert L. Grossman; Edward A. Brandes

2001-05-01T23:59:59.000Z

375

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

376

Trends in Land Evapotranspiration over Canada for the Period 1960–2000 Based on In Situ Climate Observations and a Land Surface Model  

Science Conference Proceedings (OSTI)

An assessment of annual trends in actual evapotranspiration (AET) and associated meteorological inputs is performed at 101 locations across Canada with available long-term hourly surface climate observations to determine if AET in Canada is ...

Richard Fernandes; Vladimir Korolevych; Shusen Wang

2007-10-01T23:59:59.000Z

377

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...

378

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

379

An Objective Climatology of Carolina Coastal Fronts  

E-Print Network (OSTI)

This study describes a simple objective method to identify cases of coastal frontogenesis offshore of the Carolinas and to characterize the sensible weather associated with frontal passage at measurement sites near the coast. The identification method, based on surface hourly data from offshore and adjacent land stations, was applied to an 11-yr dataset (1984–94). A total of 379 coastal fronts was found, 70 of which eventually made landfall along the North Carolina coast; 112 that remained offshore, and 197 were termed diurnal since they remained offshore but disappeared during daylight hours. Results show that most coastal and offshore sites experience a wind shift of about 40°–70 ° and a warming of about 2°–3°C during the hour of frontal passage. Exceptions include sites near colder waters where the rates are markedly reduced and frontal passage is often less discernible. Excluding diurnal fronts, just over half the cases were associated with cold-air damming (CAD) during the cold season of 16 October–15 April. Most of these winter cases linked with CAD were onshore fronts. During the warm season, most fronts were diurnal, but the association with CAD was still significant. To explore the synoptic-scale environment, composite maps for the cold season were generated for all three frontal subtypes from NCEP–NCAR reanalysis data. Results show a strong surface anticyclone

K. Wyat Appel; Allen J. Riordan; Timothy A. Holley

2004-01-01T23:59:59.000Z

380

Summertime Precipitation Regimes Associated with the Sea Breeze and Land Breeze in Southern Mississippi and Eastern Louisiana  

Science Conference Proceedings (OSTI)

This study assesses the monthly climatology of the timing and placement of convective precipitation events induced by sea and land breezes in the Louisiana–Mississippi–Alabama region, and determines possible reasons for the monthly differences. ...

Christopher M. Hill; Patrick J. Fitzpatrick; James H. Corbin; Yee H. Lau; Sachin K. Bhate

2010-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "land surface climatology" 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 Survey of Changes in Cloud Cover and Cloud Types over Land from Surface Observations, 1971–96  

Science Conference Proceedings (OSTI)

From a dataset of weather observations from land stations worldwide, about 5400 stations were selected as having long periods of record with cloud-type information; they cover all continents and many islands. About 185 million synoptic reports ...

Stephen G. Warren; Ryan M. Eastman; Carole J. Hahn

2007-02-01T23:59:59.000Z

382

A Long-Term Hydrologically Based Dataset of Land Surface Fluxes and States for the Conterminous United States  

Science Conference Proceedings (OSTI)

A frequently encountered difficulty in assessing model-predicted land–atmosphere exchanges of moisture and energy is the absence of comprehensive observations to which model predictions can be compared at the spatial and temporal resolutions at ...

E. P. Maurer; A. W. Wood; J. C. Adam; D. P. Lettenmaier; B. Nijssen

2002-11-01T23:59:59.000Z

383

The ISLSCP Initiative I Global Datasets: Surface Boundary Conditions and Atmospheric Forcings for Land-Atmosphere Studies  

Science Conference Proceedings (OSTI)

A comprehensive series of global datasets for land-atmosphere models has been collected, formatted to a common grid, and released on a set of CD-ROMS. This paper describes the motivation for and the, contents of the dataset.

P. J. Sellers; B. W. Meeson; J. Closs; J. Collatz; F. Corprew; D. Dazlich; F. G. Hall; Y. Kerr; R. Koster; S. Los; K. Mitchell; J. McManus; D. Myers; K-J. Sun; P. Try

1996-09-01T23:59:59.000Z

384

NASA Cold Land Processes Experiment (CLPX 2002/03): Ground-Based and Near-Surface Meteorological Observations  

Science Conference Proceedings (OSTI)

A short-term meteorological database has been developed for the Cold Land Processes Experiment (CLPX). This database includes meteorological observations from stations designed and deployed exclusively for CLPX as well as observations available ...

Kelly Elder; Angus Goodbody; Don Cline; Paul Houser; Glen E. Liston; Larry Mahrt; Nick Rutter

2009-02-01T23:59:59.000Z

385

Use of Satellite-Based Precipitation Observation in Improving the Parameterization of Canopy Hydrological Processes in Land Surface Models  

Science Conference Proceedings (OSTI)

Precipitation exhibits significant spatial variability at scales much smaller than the typical size of climate model grid cells. Neglecting such subgrid-scale variability in climate models causes unrealistic representation of land–atmosphere flux ...

Dagang Wang; Guiling Wang; Emmanouil N. Anagnostou

2005-10-01T23:59:59.000Z

386

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

387

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

388

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

389

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

390

Modeling the Evolution of the Atmospheric Boundary Layer Coupled to the Land Surface for Three Contrasting Nights in CASES-99  

Science Conference Proceedings (OSTI)

The modeling and prediction of the stable boundary layer over land is a persistent, problematic feature in weather, climate, and air quality topics. Here, the performance of a state-of-the-art single-column boundary layer model is evaluated with ...

G. J. Steeneveld; B. J. H. van de Wiel; A. A. M. Holtslag

2006-03-01T23:59:59.000Z

391

Improving land-surface model hydrology: Is an explicit aquifer model better than a deeper soil profile?  

E-Print Network (OSTI)

-Yue Niu,1 Pat J.-F. Yeh,4 and James Famiglietti4 Received 24 February 2007; revised 3 April 2007; accepted Community Land Model (CLM) we evaluate three parameterizations of vertical water flow: (1) a shallow soil variation in terrestrial water storage; and (3) a lumped, unconfined aquifer model coupled to the shallow

Yang, Zong-Liang

392

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

393

Estimation of Sensible and Latent Heat Fluxes from Soil Surface Temperature Using a Linear Air-Land Heat Transfer Model  

Science Conference Proceedings (OSTI)

The authors present a linearized model of the heat transfer between the soil layer and the atmosphere. Using this model, the moisture availability at the surface can be estimated from the diurnal variations of the soil surface temperature and ...

Fujio Kimura; Yugo Shimizu

1994-04-01T23:59:59.000Z

394

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

395

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

396

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

397

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

398

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

399

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

400

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

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

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

402

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

403

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

404

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

405

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

406

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

407

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

408

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

409

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

410

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

411

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

412

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

413

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

414

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

415

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

416

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

417

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

418

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

419

Comparison of Water-Related Land Cover Types in Six 1-km Global Land Cover Datasets  

Science Conference Proceedings (OSTI)

Land cover classification is a fundamental and vital activity that is helpful for understanding natural dynamics and the human impacts of land surface processes. Available multiple 1-km global land cover datasets have been compared to identify ...

Tosiyuki Nakaegawa

2012-04-01T23:59:59.000Z

420

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" 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

Performance Assessment of a New Stationarity-based Parameter Estimation Method with a Simplified Land Surface Model Using In-situ and Remotely Sensed Surface States  

Science Conference Proceedings (OSTI)

We evaluate the performance of a new stationarity-based method for parameter estimation of a simple coupled water and energy balance model using in-situ and remotely sensed surface soil moisture (from AMSR-E) and surface temperature (from a ...

Jian Sun; Guido D. Salvucci

422

A New Scheme for Effective Roughness Length and Effective Zero-Plane Displacement in Land Surface Models  

Science Conference Proceedings (OSTI)

Based on the similarity theory of the atmospheric surface layer and the flux conservation and mass conservation laws, a new scheme for determining the effective roughness length (ERL) and the effective zero-plane displacement (EZPD) for a ...

Zhong Zhong; Wei Lu; Shuai Song; Yaocun Zhang

2011-12-01T23:59:59.000Z

423

A General Interface between an Atmospheric General Circulation Model and Underlying Ocean and Land Surface Models: Delocalized Physics Scheme  

Science Conference Proceedings (OSTI)

In order to represent in a most adequate way the various feedback mechanisms that govern the atmosphere–ocean or atmosphere–surface couplings, a “delocalized physics” method is introduced, in which the subgrid-scale physical parameterizations of ...

Augustin Vintzileos; Robert Sadourny

1997-05-01T23:59:59.000Z

424

Sequential Assimilation of ERS-1 SAR Data into a Coupled Land Surface–Hydrological Model Using an Extended Kalman Filter  

Science Conference Proceedings (OSTI)

A first attempt to sequentially assimilate European Space Agency (ESA) Remote Sensing Satellite (ERS) synthetic aperture radar (SAR) estimations of surface soil moisture in the production scheme of a lumped rainfall–runoff model has been ...

C. Francois; A. Quesney; C. Ottlé

2003-04-01T23:59:59.000Z

425

Relative Controls of Asian–Pacific Summer Climate by Asian Land and Tropical–North Pacific Sea Surface Temperature  

Science Conference Proceedings (OSTI)

The dominant pattern of summertime tropical and North Pacific sea surface temperature (SST) is characterized by an out-of-phase relationship between the tropics and the extratropics. This pattern, defined as the tropical–North Pacific mode (TNPM) ...

Ping Zhao; Song Yang; Maoqiu Jian; Junming Chen

2011-08-01T23:59:59.000Z

426

Effects of Saturated and Dry Land Surfaces on the Tropical Circulation and Precipitation in a General Circulation Model  

Science Conference Proceedings (OSTI)

A comprehensive rhomboidal-15 general circulation model with idealized boundary conditions is used to investigate the effects of interactions between the tropical circulation and continental climate on the precipitation distribution. Sea surface ...

Kerry H. Cook; Anand Gnanadesikan

1991-09-01T23:59:59.000Z

427

Multidataset Study of Optimal Parameter and Uncertainty Estimation of a Land Surface Model with Bayesian Stochastic Inversion and Multicriteria Method  

Science Conference Proceedings (OSTI)

This study evaluates the ability of Bayesian stochastic inversion (BSI) and multicriteria (MC) methods to search for the optimal parameter sets of the Chameleon Surface Model (CHASM) using prescribed forcing to simulate observed sensible and ...

Youlong Xia; Mrinal K. Sen; Charles S. Jackson; Paul L. Stoffa

2004-10-01T23:59:59.000Z

428

Observational Evidence that agricultural Intensification and land use change may1 be reducing the Indian Summer Monsoon Rainfall2  

E-Print Network (OSTI)

the Indian Summer Monsoon Rainfall2 Dev Niyogi1 , Chandra Kishtawal2 , Shivam Tripathi3 , Rao S. Govindaraju3 land use change and monsoonal rainfall climatology is10 analyzed. A combination of statistical analysis data over13 the Indian summer monsoon region, (ii) investigate the relation between land use change/14

Niyogi, Dev

429

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

430

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

431

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

432

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

433

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

434

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

435

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

436

South China Sea Isopycnal-Surface Circulation  

Science Conference Proceedings (OSTI)

This paper investigates the seasonal variabilities of the South China Sea isopycnal-surface circulations and of the Kuroshio intrusion through the Luzon Strait using the U.S. Navy’s climatological temperature and salinity dataset (public domain) ...

Peter C. Chu; Rongfeng Li

2000-09-01T23:59:59.000Z

437

Toward Objective, Standardized Intensity Estimates from Surface Wind Speed Observations  

Science Conference Proceedings (OSTI)

Extreme wind climatology and event-specific intensity assessments rely heavily on surface wind field observations. The most widely used platforms sited at airports are the Automated Surface Observing System (ASOS) and its predecessor, the ...

Forrest J. Masters; Peter J. Vickery; Phuong Bacon; Edward N. Rappaport

2010-12-01T23:59:59.000Z

438

Surface Albedo over the Sahel from METEOSAT Radiances  

Science Conference Proceedings (OSTI)

A method to estimate surface albedo in the African Sahel is proposed and discussed. This method, which uses METEOSAT imagery and routine surface global radiation measurement is shown to be relevant for climatological studies.

Bernard Pinty; Gérard Szejwach; Jacques Stum

1985-02-01T23:59:59.000Z

439

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

440

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

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

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

442

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

443

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

444

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

445

Forecasting with Reference to a Specific Climatology  

Science Conference Proceedings (OSTI)

Seasonal forecasts are most commonly issued as anomalies with respect to some multiyear reference period. However, different seasonal forecasting centers use different reference periods. This paper shows that for near-surface temperature, ...

Emily Wallace; Alberto Arribas

2012-11-01T23:59:59.000Z

446

The Global Land Data Assimilation System  

Science Conference Proceedings (OSTI)

A Global Land Data Assimilation System (GLDAS) has been developed. Its purpose is to ingest satellite- and ground-based observational data products, using advanced land surface modeling and data assimilation techniques, in order to generate ...

M. Rodell; P. R. Houser; U. Jambor; J. Gottschalck; K. Mitchell; C-J. Meng; K. Arsenault; B. Cosgrove; J. Radakovich; M. Bosilovich; J. K. Entin*J. P. Walker; D. Lohmann; D. Toll

2004-03-01T23:59:59.000Z

447

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

448

Diagnosing Land–Atmosphere Interaction from a Regional Climate Model Simulation over West Africa  

Science Conference Proceedings (OSTI)

Land–atmosphere interaction at climatological time scales in a large area that includes the West African Sahel has been explicitly explored in a regional climate model (RegCM) simulation using a range of diagnostics. First, areas and seasons of ...

Bart J. J. M. van den Hurk; Erik van Meijgaard

2010-04-01T23:59:59.000Z

449

EOS Land Validation Project  

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

EOS Land Validation The EOS Land Validation Project Overview EOS Land Validation Logo The objective of the EOS Land Validation Project is to achieve consistency, completeness,...

450

Synoptic-Dynamic Climatology of the “Bomb”  

Science Conference Proceedings (OSTI)

By defining a “bomb” as an extratropical surface cyclone whose central pressure fall averages at least 1 mb h?1 for 24 h, we have studied this explosive cyclogenesis in the Northern Hemisphere during the period September 1976–May 1979. This ...

Frederick Sanders; John R. Gyakum

1980-10-01T23:59:59.000Z

451

Impact of Land Model Calibration on Coupled Land-Atmosphere Prediction  

Science Conference Proceedings (OSTI)

Land-atmosphere (L-A) interactions play a critical role in determining the diurnal evolution of both planetary boundary layer (PBL) and land surface heat and moisture budgets, as well as controlling feedbacks with clouds and precipitation that ...

Joseph A. Santanello; Jr.; Sujay V. Kumar; Christa D. Peters-Lidard; Ken Harrison; Shujia Zhou

452

Biophysical Evaluation of Land-Cover Products for Land–Climate Modeling  

Science Conference Proceedings (OSTI)

The need for accurate characterization of the land surface as boundary conditions in climate models has been recognized widely in the climate modeling community. A large number of land-cover datasets are currently used in climate models either to ...

Jianjun Ge; Nathan Torbick; Jiaguo Qi

2009-06-01T23:59:59.000Z

453

Numerical Simulations of the Role of Land Surface Conditions in the Evolution and Structure of Summertime Thunderstorms over a Flat Highland  

Science Conference Proceedings (OSTI)

Numerical simulations of summertime thunderstorms over a flat highland (4700 m MSL), assuming the central Tibetan Plateau, were conducted with the use of a cloud-resolving nonhydrostatic model. This study was aimed at clarifying the role of land ...

Hiroyuki Yamada

2008-01-01T23:59:59.000Z

454

Land use and energy  

Science Conference Proceedings (OSTI)

This report provides estimates of the amount of land required by past and future energy development in the United States and examines major federal legislation that regulates the impact of energy facilities on land use. An example of one land use issue associated with energy development - the potential conflict between surface mining and agriculture - is illustrated by describing the actual and projected changes in land use caused by coal mining in western Indiana. Energy activities addressed in the report include extraction of coal, oil, natural gas, uranium, oil shale, and geothermal steam; uranium processing; preparation of synfuels from coal; oil refineries; fossil-fuel, nuclear, and hydro-electric power plants; biomass energy farms; and disposal of solid wastes generated during combustion of fossil fuels. Approximately 1.1 to 3.3 x 10/sup 6/ acres were devoted to these activities in the United States in 1975. As much as 1.8 to 2.0 x 10/sup 6/ additional acres could be required by 1990 for new, nonbiomass energy development. The production of grain for fuel ethanol could require an additional 16.9 to 55.7 x 10/sup 6/ acres by 1990. Federal laws that directly or indirectly regulate the land-use impacts of energy facilities include the National Environmental Protection Act, Clean Air Act, Federal Water Pollution Control Act, Surface Mining Control and Reclamation Act, and Coastal Zone Management Act. The major provisions of these acts, other relevant federal regulations, and similar state and local regulatons are described in this report. Federal legislation relating to air quality, water quality, and the management of public lands has the greatest potential to influence the location and timing of future energy development in the United States.

Robeck, K.E.; Ballou, S.W.; South, D.W.; Davis, M.J.; Chiu, S.Y.; Baker, J.E.; Dauzvardis, P.A.; Garvey, D.B.; Torpy, M.F.

1980-07-01T23:59:59.000Z

455

Drilling Waste Management Fact Sheet: Land Application  

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

Land Application Land Application Fact Sheet - Land Application The objective of applying drilling wastes to the land is to allow the soil's naturally occurring microbial population to metabolize, transform, and assimilate waste constituents in place. Land application is a form of bioremediation, and is important enough to be described in its own fact sheet; other forms of bioremediation are described in a separate fact sheet. Several terms are used to describe this waste management approach, which can be considered both treatment and disposal. In general, land farming refers to the repeated application of wastes to the soil surface, whereas land spreading and land treatment are often used interchangeably to describe the one-time application of wastes to the soil surface. Some practitioners do not follow the same terminology convention, and may interchange all three terms. Readers should focus on the technologies rather than on the specific names given to each process.

456

A Modeling and Observational Framework for Diagnosing Local Land–Atmosphere Coupling on Diurnal Time Scales  

Science Conference Proceedings (OSTI)

Land–atmosphere interactions play a critical role in determining the diurnal evolution of both planetary boundary layer (PBL) and land surface temperature and moisture states. The degree of coupling between the land surface and PBL in numerical ...

Joseph A. Santanello Jr.; Christa D. Peters-Lidard; Sujay V. Kumar; Charles Alonge; Wei-Kuo Tao

2009-06-01T23:59:59.000Z

457

Weather pattern climatology of the United States  

DOE Green Energy (OSTI)

In this study the geographic domain covered the 48 conterminous states of the United States. The daily synoptic weather pattern was classified into nine types for the 10-year period January 1, 1969 to December 31, 1978. Weather pattern types were defined relative to the classical polar front model of a mid-latitude cyclonic storm system and its associated air masses. Guidelines for classifying weather patterns on an operational basis were developed. These were applied to 3652 daily surface weather maps to produce a time series of weather pattern type at 120 grid points of a 160 point, 3/sup 0/ latitude by 4/sup 0/ longitude array over the United States. Statistics on the frequency of occurrence, persistence and alternation of weather patterns were calculated for each grid point. Summary statistics for the entire grid and for six regions were also presented. Frequency of occurrence and persistence were found to depend on the size and speed of movement of the weather pattern. Large, slow moving air masses had higher frequency of occurrence and longer persistence than small (fronts) or rapidly moving (or changing) features (fronts, storm centers). Some types showed distinct regional preferences. The subtropical maritime high occurred mainly in the south central and southeast. An indeterminate weather pattern type accounted for those weather patterns that did not fit the polar front model or were too disorganized to be classified. The intermountain thermal low of the desert southwest was one such feature that dominated both frequency of occurrence and persistence in this region. Alternation from one weather pattern to another followed the polar front model of a moving cyclonic storm. The tendency for anticyclonic weather patterns to become disorganized as they weakened was seen in the high percentage of these patterns that changed to an indeterminate pattern as they aged.

Barchet, W.R.; Davis, W.E.

1984-01-01T23:59:59.000Z

458

A Comparison of GCM-simulated and Observed Mean January and July Surface Air Temperature  

Science Conference Proceedings (OSTI)

January and July surface air temperature fields simulated by the GFDI, OSU, GISS, and UKMO general circulation models (GCMS) are compared to the global surface air temperature climatology compiled by Legates and Willmott. Legates and Willmott's ...

Cort J. Willmott; David R. Legates

1993-02-01T23:59:59.000Z

459

A Practical, Hybrid Model for Predicting the Trajectories of Near-Surface Ocean Drifters  

Science Conference Proceedings (OSTI)

A hybrid Lagrangian–Eulerian model for calculating the trajectories of near-surface drifters in the ocean is developed in this study. The model employs climatological, near-surface currents computed from a spline fit of all available drifter ...

Nathan Paldor; Yona Dvorkin; Arthur J. Mariano; Tamay Özgökmen; Edward H. Ryan

2004-08-01T23:59:59.000Z

460

Two Types of Surface Wind Response to the East China Sea Kuroshio Front  

Science Conference Proceedings (OSTI)

Effects of the sea surface temperature (SST) front along the East China Sea Kuroshio on sea surface winds at different time scales are investigated. In winter and spring, the climatological vector wind is strongest on the SST front while the ...

Jing-Wu Liu; Su-Ping Zhang; Shang-Ping Xie

2013-11-01T23:59:59.000Z

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

Recent Variability of the North Atlantic Thermohaline Circulation Inferred from Surface Heat and Freshwater Fluxes  

Science Conference Proceedings (OSTI)

An annual-mean surface-forced component of the North Atlantic thermohaline circulation (THC) in density space, ?surf(?,?), is diagnosed from observed surface heat and freshwater fluxes. The climatological mean of ?surf over 1980–97 indicates ...

Robert Marsh

2000-09-01T23:59:59.000Z

462

Comparisons of GCM and Observed Surface Wind Fields over the Tropical Indian and Pacific Oceans  

Science Conference Proceedings (OSTI)

Many of the processes that have important effects on both the climatological distribution and interannual variability of sea surface temperatures (SSTs) in the tropical oceans are greatly affected by the surface wind field. For this reason ...

Nicholas E. Graham; Tim P. Barnett; Robert M. Chervin; Michael E. Schlesinger; Ulrich Schlese

1989-03-01T23:59:59.000Z

463

Role of Net Surface Heat Flux in Seasonal Variations of Sea Surface Temperature in the Tropical Atlantic Ocean  

Science Conference Proceedings (OSTI)

The present study used a new net surface heat flux (Qnet) product obtained from the Objective Analyzed Air–Sea Fluxes (OAFlux) project and the International Satellite Cloud Climatology Project (ISCCP) to examine two specific issues—one is to ...

Lisan Yu; Xiangze Jin; Robert A. Weller

2006-12-01T23:59:59.000Z

464

Surface Radiation Budget and Climate Classification  

Science Conference Proceedings (OSTI)

The surface radiation budget of a region is strongly tied to its climate. An 8-yr climatology of surface radiation budget components for 2.5° regions over the earth is examined in order to learn how the regional climate and surface radiation are ...

G. Louis Smith; Anne C. Wilber; Shashi K. Gupta; Paul W. Stackhouse Jr.

2002-05-01T23:59:59.000Z

465

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

466

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

467

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

468

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

469

Land Turtles  

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

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

470

The Surface Energy Balance at Local and Regional Scales-A Comparison of General Circulation Model Results with Observations  

Science Conference Proceedings (OSTI)

Aspects of the mean monthly energy balance at continental surfaces are examined by appeal to the results of general circulation model (GCM) simulations, climatological maps of surface fluxes, and direct observations. Emphasis is placed on net ...

J. R. Garratt; P. B. Krummel; E. A. Kowalczyk

1993-06-01T23:59:59.000Z

471

Influence of Land Cover Change on Regional Water Cycles in Eastern Siberia  

Science Conference Proceedings (OSTI)

This study evaluated the effect of recent eastern Siberian land surface changes, such as water surface expansion, on water-energy fluxes and precipitation and focused on land surface parameters using a three-dimensional atmospheric model [the ...

Ryuhei Yoshida; Masahiro Sawada; Takeshi Yamazaki; Takeshi Ohta; Tetsuya Hiyama

2013-02-01T23:59:59.000Z

472

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

473

An Evaluation of the Strength of Land–Atmosphere Coupling  

Science Conference Proceedings (OSTI)

Two ensembles of 1-month integrations of a coupled land–atmosphere climate model that differ only in their treatment of land surface boundary conditions have been generated from initial conditions chosen from the July states taken from each year ...

Paul A. Dirmeyer

2001-08-01T23:59:59.000Z

474

Adaptive Multilevel Modeling of Land-Atmosphere Interactions  

Science Conference Proceedings (OSTI)

Adaptive multilevel methods allow full coupling of atmospheric and land surface hydrological models by preserving consistency between the large-scale (atmospheric) and the regional (land) components. The methodology was investigated for three ...

Ana Paula Barros

1995-09-01T23:59:59.000Z

475

Interannual Variability of Land-Atmosphere Coupling Strength  

Science Conference Proceedings (OSTI)

Recent studies in the Global Land-Atmosphere Coupling Experiment (GLACE) established a framework to estimate the extent to which anomalies in the land surface state (e.g., soil moisture) can affect rainfall generation and other atmospheric ...

Zhichang Guo; Paul A. Dirmeyer

476

Precipitation, Recycling, and Land Memory: An Integrated Analysis  

Science Conference Proceedings (OSTI)

A synthesis of several approaches to quantifying land–atmosphere interactions is presented. These approaches use data from observations or atmospheric reanalyses applied to atmospheric tracer models and stand-alone land surface schemes. None of ...

Paul A. Dirmeyer; C. Adam Schlosser; Kaye L. Brubaker

2009-02-01T23:59:59.000Z

477

Climate Drift in a Coupled Land–Atmosphere Model  

Science Conference Proceedings (OSTI)

A coupled land–atmosphere climate model is examined for evidence of climate drift in the land surface state variable of soil moisture. The drift is characterized as pathological error growth in two different ways. First is the systematic error ...

Paul A. Dirmeyer

2001-02-01T23:59:59.000Z

478

Use of a Coupled Land Surface General Circulation Model to Examine the Impacts of Doubled Stomatal Resistance on the Water Resources of the American Southwest  

Science Conference Proceedings (OSTI)

Tiny openings on the surfaces of leaves, stomata, control the flux of CO2, water vapor, and other gases between the atmosphere and the earth’s vegetated surface. An increase in atmospheric CO2 could have an effect on stomatal openings, causing ...

Marian Martin; Robert E. Dickinson; Zong-Liang Yang

1999-12-01T23:59:59.000Z

479

Understanding Land–Sea Warming Contrast in Response to Increasing Greenhouse Gases. Part I: Transient Adjustment  

Science Conference Proceedings (OSTI)

Climate model simulations consistently show that surface temperature over land increases more rapidly than over sea in response to greenhouse gas forcing. The enhanced warming over land is not simply a transient effect caused by the land–sea ...

Buwen Dong; Jonathan M. Gregory; Rowan T. Sutton

2009-06-01T23:59:59.000Z

480

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

Note: This page contains sample records for the topic "land surface climatology" from the National Library of EnergyBeta (NLEBeta).
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481

Climatological Characteristics and Objective Prediction of Thunderstorms over Alaska  

Science Conference Proceedings (OSTI)

Archived lightning data from the Bureau of Land Management automated network of direction-finding stations in Alaska were examined to determine the seasonal, diurnal, and spatial distributions of cloud-to-ground lightning, including the effects ...

Ronald M. Reap

1991-09-01T23:59:59.000Z

482

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

483

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

484

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

485

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

486

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

487

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

488

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

489

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

490

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

491

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

492

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

493

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

494

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

495

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

496

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

497

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

498

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

499

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

500

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