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CLPX-Model: Land Data Assimilation System (LDAS) Data

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Identification Information:

Dataset Identifier:

NSIDC-0181

Citation:

Citation Information:

Originator: Cosgrove, B.
Publication Date: 20030819
Title: CLPX-Model: Land Data Assimilation System (LDAS) Data
Publication Information:
Publication Place: Landover, Maryland USA
Publisher: Goddard: NASA Goddard Space Flight Center
Online Linkage: http://nsidc.org/data/nsidc-0181.html

Description:

Abstract:

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.

Purpose: scientific research

Documentation:

User's Guide:

Citation Information:

Originator: Cosgrove, B.
Publication Date: 20030819
Title: CLPX-Model: Land Data Assimilation System (LDAS) Data
Publication Information:
Publication Place: Landover, Maryland USA
Publisher: Goddard: NASA Goddard Space Flight Center
Online Linkage: http://ldas.gsfc.nasa.gov/LDAS8th/CLPXNLDAS/CLPXNLDAS.htm

Time Period of Content:

Time Period Information:

Range of Dates/Times:

Beginning Date: 20010101
Ending Date: 20030801

Currentness Reference: publication date

Status:

Progress: In work
Maintenance and Update Frequency: Unknown

Spatial Domain:

Bounding Coordinates:

 

West Bounding Coordinate: -108.5°
East Bounding Coordinate: -104°
North Bounding Coordinate: 42°
South Bounding Coordinate: 38.5°

Keywords:

Theme:

Theme Keyword Thesaurus: NASA Global Change Master Directory (GCMD) Science Keywords
Theme Keyword: EARTH SCIENCE Atmosphere Atmospheric Pressure Surface Pressure
Theme Keyword: EARTH SCIENCE Atmosphere Atmospheric Radiation Heat Flux
Theme Keyword: EARTH SCIENCE Atmosphere Atmospheric Radiation Solar Radiation
Theme Keyword: EARTH SCIENCE Atmosphere Atmospheric Temperature Air Temperature
Theme Keyword: EARTH SCIENCE Atmosphere Atmospheric Water Vapor Evaporation
Theme Keyword: EARTH SCIENCE Atmosphere Atmospheric Water Vapor Humidity
Theme Keyword: EARTH SCIENCE Atmosphere Atmospheric Winds Surface Winds
Theme Keyword: EARTH SCIENCE Atmosphere Atmospheric Winds Vertical Wind Motion
Theme Keyword: EARTH SCIENCE Atmosphere Precipitation Precipitation Amount
Theme Keyword: EARTH SCIENCE Atmosphere Precipitation Snow
Theme Keyword: EARTH SCIENCE Biosphere Vegetation Canopy Characteristics
Theme Keyword: EARTH SCIENCE Biosphere Vegetation Leaf Characteristics
Theme Keyword: EARTH SCIENCE Biosphere Vegetation Vegetation Index
Theme Keyword: EARTH SCIENCE Cryosphere Frozen Ground Soil Temperature
Theme Keyword: EARTH SCIENCE Cryosphere Snow/Ice Snow Cover
Theme Keyword: EARTH SCIENCE Cryosphere Snow/Ice Snow Depth
Theme Keyword: EARTH SCIENCE Cryosphere Snow/Ice Snow Energy Balance
Theme Keyword: EARTH SCIENCE Cryosphere Snow/Ice Snow Melt
Theme Keyword: EARTH SCIENCE Cryosphere Snow/Ice Snow Water Equivalent
Theme Keyword: EARTH SCIENCE Land Surface Frozen Ground Soil Temperature
Theme Keyword: EARTH SCIENCE Land Surface Land Temperature Land Surface Temperature
Theme Keyword: EARTH SCIENCE Land Surface Soils Soil Moisture/Water Content
Theme Keyword: EARTH SCIENCE Land Surface Soils Soil Temperature
Theme Keyword: EARTH SCIENCE Land Surface Surface Radiative Properties Albedo
Theme Keyword: EARTH SCIENCE Terrestrial Hydrosphere Snow/Ice Snow Cover
Theme Keyword: EARTH SCIENCE Terrestrial Hydrosphere Snow/Ice Snow Depth
Theme Keyword: EARTH SCIENCE Terrestrial Hydrosphere Snow/Ice Snow Energy Balance
Theme Keyword: EARTH SCIENCE Terrestrial Hydrosphere Snow/Ice Snow Melt
Theme Keyword: EARTH SCIENCE Terrestrial Hydrosphere Snow/Ice Snow Water Equivalent
Theme Keyword: EARTH SCIENCE Terrestrial Hydrosphere Surface Water Runoff

Theme:

Theme Keyword Thesaurus: NASA Global Change Master Directory (GCMD) Project Keywords
Theme Keyword: CLPX Cold Land Processes Field Experiment

Theme:

Theme Keyword Thesaurus: NASA Global Change Master Directory (GCMD) Platform Keywords
Theme Keyword: MODELS

Theme:

Theme Keyword Thesaurus: None
Theme Keyword: Air Temperature
Theme Keyword: Albedo
Theme Keyword: Canopy Cover
Theme Keyword: Ground Heat Flux
Theme Keyword: Heat Flux
Theme Keyword: Humidity
Theme Keyword: Latent Heat Flux
Theme Keyword: Leaf Area Index
Theme Keyword: Near-surface Air Temperatures
Theme Keyword: Precipitation
Theme Keyword: Precipitation Amount
Theme Keyword: Precipitation Type
Theme Keyword: Runoff Data
Theme Keyword: Snow
Theme Keyword: Snow Cover
Theme Keyword: Snow Depth
Theme Keyword: Snowfall
Theme Keyword: Snow Melt
Theme Keyword: Snow Pack Water Equivalent
Theme Keyword: Snow Water Equivalent
Theme Keyword: Soil Heat Flux
Theme Keyword: Soil Temperature
Theme Keyword: Soil Water Content
Theme Keyword: Solar Radiation
Theme Keyword: Surface Pressure
Theme Keyword: Surface Winds
Theme Keyword: Two-Meter Air Temperature

Place:

Place Keyword Thesaurus: NASA Global Change Master Directory (GCMD) Location Keywords
Place Keyword: Continent North America
Place Keyword: Continent North America United States Of America Colorado, Wyoming
Place Keyword: Geographic Region Northern Hemisphere

Access Constraints:

None

Use Constraints:

None

Point of Contact:

Contact Information:

Contact Person Primary:

Contact Person: NSIDC User Services
Contact Organization: National Snow and Ice Data Center

Contact Address:

Address Type: mailing
Address:
  • CIRES, 449 UCB
  • University of Colorado
City: Boulder
State or Province: CO
Postal Code: 80309-0449
Country: USA

Contact Voice Telephone: 1 303 492-6199 x
Contact Facsimile Telephone: 1 303 492-2468 x
Contact Electronic Mail Address: nsidc@nsidc.org

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Distribution Information:

Distributor:

Contact Information:

Contact Organization Primary:

Contact Organization: NASA GSFC Hydrological Sciences Branch, Laboratory for Hydrospheric Processes
Contact Person:

Contact Address:

Address Type: mailing
City: Unknown
State or Province: Unknown
Postal Code: Unknown

Contact Voice Telephone:
Contact Facsimile Telephone:
Contact Electronic Mail Address:

Resource Description:

NSIDC-0181

Distribution Liability:

NSIDC cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NSIDC makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty.

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Metadata Reference Information:

Metadata Date:

20130628

Metadata Review Date:

20130628

Metadata Contact:

Contact Information:

Contact Person Primary:

Contact Person:
Contact Organization: NASA GSFC Hydrological Sciences Branch, Laboratory for Hydrospheric Processes

Contact Address:

Address Type: mailing
City: Unknown
State or Province: Unknown
Postal Code: Unknown

Contact Voice Telephone:
Contact Facsimile Telephone:
Contact Electronic Mail Address:

Metadata Standard Name:

FGDC Content Standard for Digital Geospatial Metadata: Extensions for Remote Sensing Metadata

Metadata Standard Version:

FGDC-STD-012-2002

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Metadata Views

FGDC Text-Only

Federal Geographic Data Committee (FGDC) in plain text

FGDC XML

Federal Geographic Data Committee (FGDC) in Extensible Markup Language (XML)

DIF HTML

NASA Global Change Master Directory (GCMD) Directory Interchange Format (DIF)

ISO HTML

International Organization for Standardization (ISO) 19115:2003 Geographic Information Metadata