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

Federal Geographic Data Committee (FGDC) Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: Cosgrove, B.
Publication_Date: 20030819
Title: CLPX-Model: Land Data Assimilation System (LDAS) Data
Edition: 1
Geospatial_Data_Presentation_Form:
Series_Information:
Series_Name:
Issue_Identification:
Publication_Information:
Publication_Place: Landover, Maryland USA
Publisher: Goddard: NASA Goddard Space Flight Center
Other_Citation_Details:
Online_Linkage: http://nsidc.org/data/NSIDC-0181
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:
Not Available
Supplemental_Information:
Not Available
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20010101
Ending_Date: 20030801
Currentness_Reference:Unknown
Status:
Progress: In Work
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Description_of_Geographic_Extent:
Bounding_Coordinates:
West_Bounding_Coordinate: -108.5
East_Bounding_Coordinate: -104.0
North_Bounding_Coordinate: 42.0
South_Bounding_Coordinate: 38.5
Keywords:
Theme:
Theme_Keyword_Thesaurus: GCMD SCIENCE PARAMETERS
Theme_Keyword_Thesaurus: GCMD PLATFORM
Theme_Keyword_Thesaurus: PROJECT
Theme_Keyword_Thesaurus: ANCILLARY KEYWORDS
Theme_Keyword_Thesaurus: ISO TOPIC CATEGORY
Theme_Keyword_Thesaurus: DATA SET LANGUAGE
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC TEMPERATURE > AIR TEMPERATURE
Theme_Keyword: EARTH SCIENCE > LAND SURFACE > SURFACE RADIATIVE PROPERTIES > ALBEDO
Theme_Keyword: EARTH SCIENCE > BIOSPHERE > VEGETATION > CANOPY CHARACTERISTICS
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WATER VAPOR > EVAPORATION
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC RADIATION > HEAT FLUX
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WATER VAPOR > HUMIDITY
Theme_Keyword: EARTH SCIENCE > LAND SURFACE > LAND TEMPERATURE > LAND SURFACE TEMPERATURE
Theme_Keyword: EARTH SCIENCE > BIOSPHERE > VEGETATION > LEAF CHARACTERISTICS
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > PRECIPITATION > PRECIPITATION AMOUNT
Theme_Keyword: EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > SURFACE WATER > RUNOFF
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > PRECIPITATION > SNOW
Theme_Keyword: EARTH SCIENCE > CRYOSPHERE > SNOW/ICE > SNOW COVER
Theme_Keyword: EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > SNOW/ICE > SNOW COVER
Theme_Keyword: EARTH SCIENCE > CRYOSPHERE > SNOW/ICE > SNOW DEPTH
Theme_Keyword: EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > SNOW/ICE > SNOW DEPTH
Theme_Keyword: EARTH SCIENCE > CRYOSPHERE > SNOW/ICE > SNOW ENERGY BALANCE
Theme_Keyword: EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > SNOW/ICE > SNOW ENERGY BALANCE
Theme_Keyword: EARTH SCIENCE > CRYOSPHERE > SNOW/ICE > SNOW MELT
Theme_Keyword: EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > SNOW/ICE > SNOW MELT
Theme_Keyword: EARTH SCIENCE > CRYOSPHERE > SNOW/ICE > SNOW WATER EQUIVALENT
Theme_Keyword: EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > SNOW/ICE > SNOW WATER EQUIVALENT
Theme_Keyword: EARTH SCIENCE > LAND SURFACE > SOILS > SOIL MOISTURE/WATER CONTENT
Theme_Keyword: EARTH SCIENCE > CRYOSPHERE > FROZEN GROUND > SOIL TEMPERATURE
Theme_Keyword: EARTH SCIENCE > LAND SURFACE > FROZEN GROUND > SOIL TEMPERATURE
Theme_Keyword: EARTH SCIENCE > LAND SURFACE > SOILS > SOIL TEMPERATURE
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC RADIATION > SOLAR RADIATION
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC PRESSURE > SURFACE PRESSURE
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WINDS > SURFACE WINDS
Theme_Keyword: EARTH SCIENCE > BIOSPHERE > VEGETATION > VEGETATION INDEX
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WINDS > VERTICAL WIND MOTION
Theme_Keyword: MODELS/ANALYSES
Theme_Keyword: CLPX > COLD LAND PROCESSES FIELD EXPERIMENT
Theme_Keyword: ESIP > EARTH SCIENCE INFORMATION PARTNERS PROGRAM
Theme_Keyword: EOSDIS > EARTH OBSERVING SYSTEM DATA INFORMATION SYSTEM
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
Theme_Keyword: CLIMATOLOGY/METEOROLOGY/ATMOSPHERE
Theme_Keyword: GEOSCIENTIFIC INFORMATION
Theme_Keyword: BIOTA
Theme_Keyword: INLAND WATERS
Theme_Keyword: ENGLISH
Place:
Place_Keyword_Thesaurus: GCMD
Place_Keyword: CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > COLORADO
Place_Keyword: CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > WYOMING
Place_Keyword: CONTINENT > NORTH AMERICA
Place_Keyword: GEOGRAPHIC REGION > NORTHERN HEMISPHERE
Access_Constraints: Not Available
Use_Constraints:
Not Available
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: NSIDC USER SERVICES
Contact_Position: TECHNICAL CONTACT
Contact_Address:
Address_Type: Mailing and Physical Address
Address: National Snow and Ice Data Center
Address: CIRES, 449 UCB
Address: University of Colorado
City: Boulder
State_or_Province: CO
Postal_Code: 80309-0449
Country: USA
Contact_Voice_Telephone: +1 (303) 492-6199
Contact_Facsimile_Telephone: +1 (303) 492-2468
Contact_Electronic_Mail_Address: nsidc@nsidc.org
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Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
All data have undergone quality control at GSFC.
Logical_Consistency_Report:
Not Available
Completeness_Report:
Not Available
Lineage:
Process_Step:
Process_Description:
Not Available
Process_Date: Unknown
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Spatial_Reference_Information:
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Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: NSIDC > National Snow and Ice Data Center
Contact_Person: NSIDC USER SERVICES
Contact_Position: DATA CENTER CONTACT
Contact_Address:
Address_Type: Mailing and Physical Address
Address: National Snow and Ice Data Center
Address: CIRES, 449 UCB
Address: University of Colorado
City: Boulder
State_or_Province: CO
Postal_Code: 80309-0449
Country: USA
Contact_Voice_Telephone: +1 (303) 492-6199
Contact_Facsimile_Telephone: +1 (303) 492-2468
Contact_Electronic_Mail_Address: nsidc@nsidc.org
Resource_Description: NSIDC-0181
Distribution_Liability:
Not Available
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://nsidc.org
Access_Instructions:
DATA CENTER URL
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://ldas.gsfc.nasa.gov/LDAS8th/CLPXNLDAS.htm
Access_Instructions:
Web site for metadata and access to ftp data link.
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://ldas.gsfc.nasa.gov/
Access_Instructions:
NASA Land Data Assimilation Systems (LDAS)
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://nsidc.org/data/clpx
Access_Instructions:
CLPX Site
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://nsidc.org/data/swe
Access_Instructions:
Snow Water Equivalent Field Measurements
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://nsidc.org/forms/nsidc0112.html
Access_Instructions:
Register as a CLPX user
Fees: Not Available
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Metadata_Reference_Information:
Metadata_Date: 20030819
Metadata_Review_Date: 20140707
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: GCMD User Support Office
Contact_Organization: NASA Global Change Master Directory
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Not Available
City: Lanham
State_or_Province: MD
Postal_Code: 20706
Country: USA
Contact_Voice_Telephone: Not Available
Contact_Electronic_Mail_Address: gcmduso@gcmd.gsfc.nasa.gov
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
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