Entry_ID: NSIDC-0181
Entry_Title: CLPX-Model: Land Data Assimilation System (LDAS) Data
Group: Data_Set_Citation
   Dataset_Creator: Cosgrove, B. 
   Dataset_Title: CLPX-Model: Land Data Assimilation System (LDAS) Data
   Dataset_Release_Date: 2003-08-19
   Dataset_Release_Place: Landover, Maryland USA
   Dataset_Publisher: Goddard: NASA Goddard Space Flight Center
   Online_Resource: http://nsidc.org/data/nsidc-0181.html
End_Group
Group: Personnel
   Role: Investigator
   First_Name: Brian
   Last_Name: Cosgrove
   Email: brian.cosgrove@gsfc.nasa.gov
   Phone: 1 301 286 5084 
   Group: Contact_Address
      Address: NASA/Goddard Space Flight Center  SAIC
      Address: Hydrological Sciences Branch
      Address: NASA-GSFC Mail Code 974.1
      Address: Building 22, Room 014
      City: Greenbelt
      Province_or_State: MD
      Postal_Code: 20771
      Country: USA
   End_Group
End_Group
Group: Personnel
   Role: Technical Contact
   First_Name: NSIDC
   Last_Name: User Services
   Email: nsidc@nsidc.org
   Phone: 1 303 492-6199 x
   Fax: 1 303  492-2468 x
   Group: Contact_Address
      Address: National Snow and Ice Data Center
      Address: CIRES, 449 UCB
      Address: University of Colorado
      City: Boulder
      Province_or_State: CO
      Postal_Code: 80309-0449
      Country: USA
   End_Group
End_Group
Group: Personnel
   Role: Investigator
   First_Name: Don
   Last_Name: Cline
   Email: cline@nohrsc.nws.gov
   Phone: 1 952 361 6610 x252
   Fax: 1 952  361 6634 
   Group: Contact_Address
      Address: NOHRSC
      Address: National Weather Service
      Address: National Operational Hydrologic Remote Sensing Center
      Address: 1735 Lake Drive W.
      City: Chanhassen
      Province_or_State: MN
      Postal_Code: 55317
   End_Group
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Atmosphere
   Term: Atmospheric Pressure
   Variable_Level_1: Surface Pressure
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Atmosphere
   Term: Atmospheric Radiation
   Variable_Level_1: Heat Flux
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Atmosphere
   Term: Atmospheric Radiation
   Variable_Level_1: Solar Radiation
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Atmosphere
   Term: Atmospheric Temperature
   Variable_Level_1: Air Temperature
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Atmosphere
   Term: Atmospheric Water Vapor
   Variable_Level_1: Evaporation
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Atmosphere
   Term: Atmospheric Water Vapor
   Variable_Level_1: Humidity
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Atmosphere
   Term: Atmospheric Winds
   Variable_Level_1: Surface Winds
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Atmosphere
   Term: Atmospheric Winds
   Variable_Level_1: Vertical Wind Motion
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Atmosphere
   Term: Precipitation
   Variable_Level_1: Precipitation Amount
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Atmosphere
   Term: Precipitation
   Variable_Level_1: Snow
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Biosphere
   Term: Vegetation
   Variable_Level_1: Canopy Characteristics
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Biosphere
   Term: Vegetation
   Variable_Level_1: Leaf Characteristics
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Biosphere
   Term: Vegetation
   Variable_Level_1: Vegetation Index
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Cryosphere
   Term: Frozen Ground
   Variable_Level_1: Soil Temperature
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Cryosphere
   Term: Snow/Ice
   Variable_Level_1: Snow Cover
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Cryosphere
   Term: Snow/Ice
   Variable_Level_1: Snow Depth
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Cryosphere
   Term: Snow/Ice
   Variable_Level_1: Snow Energy Balance
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Cryosphere
   Term: Snow/Ice
   Variable_Level_1: Snow Melt
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Cryosphere
   Term: Snow/Ice
   Variable_Level_1: Snow Water Equivalent
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Land Surface
   Term: Frozen Ground
   Variable_Level_1: Soil Temperature
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Land Surface
   Term: Land Temperature
   Variable_Level_1: Land Surface Temperature
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Land Surface
   Term: Soils
   Variable_Level_1: Soil Moisture/Water Content
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Land Surface
   Term: Soils
   Variable_Level_1: Soil Temperature
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Land Surface
   Term: Surface Radiative Properties
   Variable_Level_1: Albedo
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Terrestrial Hydrosphere
   Term: Snow/Ice
   Variable_Level_1: Snow Cover
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Terrestrial Hydrosphere
   Term: Snow/Ice
   Variable_Level_1: Snow Depth
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Terrestrial Hydrosphere
   Term: Snow/Ice
   Variable_Level_1: Snow Energy Balance
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Terrestrial Hydrosphere
   Term: Snow/Ice
   Variable_Level_1: Snow Melt
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Terrestrial Hydrosphere
   Term: Snow/Ice
   Variable_Level_1: Snow Water Equivalent
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Terrestrial Hydrosphere
   Term: Surface Water
   Variable_Level_1: Runoff
End_Group
Keyword: Air Temperature
Keyword: Albedo
Keyword: Canopy Cover
Keyword: Ground Heat Flux
Keyword: Heat Flux
Keyword: Humidity
Keyword: Latent Heat Flux
Keyword: Leaf Area Index
Keyword: Near-surface Air Temperatures
Keyword: Precipitation
Keyword: Precipitation Amount
Keyword: Precipitation Type
Keyword: Runoff Data
Keyword: Snow
Keyword: Snow Cover
Keyword: Snow Depth
Keyword: Snowfall
Keyword: Snow Melt
Keyword: Snow Pack Water Equivalent
Keyword: Snow Water Equivalent
Keyword: Soil Heat Flux
Keyword: Soil Temperature
Keyword: Soil Water Content
Keyword: Solar Radiation
Keyword: Surface Pressure
Keyword: Surface Winds
Keyword: Two-Meter Air Temperature
Source_Name: MODELS
Group: Temporal_Coverage
   Start_Date: 2001-01-01
   Stop_Date: 2003-08-01
End_Group
Data_Set_Progress: in work
Group: Spatial_Coverage
   Southernmost_Latitude: 38.5
   Northernmost_Latitude: 42
   Westernmost_Longitude: -108.5
   Easternmost_Longitude: -104
End_Group
Group: Location
   Location_Category: CONTINENT
   Location_Type: NORTH AMERICA
End_Group
Group: Location
   Location_Category: CONTINENT
   Location_Type: NORTH AMERICA
   Location_Subregion1: UNITED STATES OF AMERICA
   Detailed_Location: COLORADO, WYOMING
End_Group
Group: Location
   Location_Category: GEOGRAPHIC REGION
   Location_Type: NORTHERN HEMISPHERE
End_Group
Project: CLPX > Cold Land Processes Field Experiment
Quality: All data have undergone quality control at GSFC.
Data_Set_Language: English
Originating_Center: NSIDC
Group: Data_Center
   Data_Center_Name: NASA/GSFC/LHP/HSB > NASA GSFC Hydrological Sciences Branch, Laboratory for Hydrospheric Processes
   Data_Center_URL:  
   Group: Personnel
      Role: Data Center Contact
      First_Name:  
      Middle_Name:  
      Last_Name:  
      Email:  
      Phone:   
      Fax:    
   End_Group
End_Group
Group: Distribution
   Distribution_Media: FTP
End_Group
Group: Summary

   The LDAS data set contains 43 model and observation-based fields produced  by 
   the LDAS uncoupled modeling system at the NASA Goddard Space Flight Center 
   using the Mosaic Land Surface Model (LSM).  Parameters include snow cover,  
   snow depth, snow melt, albedo, precipitation, temperature, canopy 
   characteristics, longwave and shortwave radiation, heat flux, soil moisture,  
   sublimation, snow water equivalent, and meteorolical parameters. Precipitation 
   and solar radiation are observation-based, while other forcing variables  
   (humidity, temperature, wind speed, pressure, longwave radiation) are derived  
   from the National Centers for Environmental Prediction’s (NCEP) Eta Data 
   Assimilation System (EDAS).  All other variables in the files are  from the 
   Mosaic LSM. Data were produced at an hourly resolution from 1 January 2001 
   through June 2003.

   The LDAS data are delivered on an 1/8th-degree regular latitude/longitude grid 
   covering the Large-Regional Study Area (LRSA), located between 38.5-42 N and 
   104-108.5 W. The resolution in the Y direction of each 1/8th degree LDAS  
   pixel is 13899 meters over the whole domain. The resolution in the X direction 
   ranges from 10878 meters at the southern edge of the LRSA to 10329 meters at 
   the northern edge of the LRSA (it decreases as the distance between longitude 
   lines decreases).   This data set is available in ASCII format from the Land 
   Data Assimilation Systems (LDAS) at NASA's Goddard Space Flight Center 
   (http://ldas.gsfc.nasa.gov/). Two sample FORTRAN programs are provided for 
   reading these ASCII gridded data. 

   The NASA Cold Land Processes Experiment (CLPX) is a multi-sensor, multi-scale 
   experiment that focuses on extending a local-scale understanding of water 
   fluxes, storage, and transformations to regional and global scales. Within a 
   framework of nested study areas in the central Rocky Mountains of the western 
   United States, ranging from 1-ha to 160,000 km2, intensive ground, airborne, 
   and spaceborne observations are collected. Data collection focuses on two 
   seasons: mid-winter, when conditions are generally frozen and dry, and early 
   spring, a transitional period when both frozen and thawed, dry and wet 
   conditions are widespread.

End_Group
Group: Related_URL
   Group: URL_Content_Type
      Type: VIEW PROJECT HOME PAGE
   End_Group
   URL: http://nsidc.org/data/clpx
   Description: CLPX Site
End_Group
Group: Related_URL
   Group: URL_Content_Type
      Type: VIEW PROJECT HOME PAGE
   End_Group
   URL: http://disc.sci.gsfc.nasa.gov/hydrology/data-holdings
   Description: Goddard Earth Sciences Data and Information Center Data Services
End_Group
Group: Related_URL
   Group: URL_Content_Type
      Type: VIEW PROJECT HOME PAGE
   End_Group
   URL: http://ldas.gsfc.nasa.gov/
   Description: NASA Land Data Assimilation Systems (LDAS)
End_Group
Group: Related_URL
   Group: URL_Content_Type
      Type: VIEW PROJECT HOME PAGE
   End_Group
   URL: http://nsidc.org/forms/nsidc0112.html
   Description: Register as a CLPX user
End_Group
Metadata_Name: CEOS IDN DIF
Metadata_Version: 9.7
DIF_Creation_Date: 2003-08-19
Last_DIF_Revision_Date: 2014-07-29
Group: DIF_Revision_History

    updated URL for documentation, and project site & data access, and removed 
   SWE measurements link.

End_Group