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

Federal Geographic Data Committee (FGDC) Metadata:

• Identification_Information
• Data_Quality_Information
• Spatial_Reference_Information
• Distribution_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: Mr Brian Cosgrove

Publication_Date: 20030819

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

Edition:

Geospatial_Data_Presentation_Form:

Series_Information:

Series_Name:

Issue_Identification:

Publication_Information:

Publication_Place: Greenbelt, MD, USA

Publisher: Goddard Space Flight Center

Other_Citation_Details:

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 PredictionÂ’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 PRESSURE > SURFACE PRESSURE

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 > ATMOSPHERE > ATMOSPHERIC RADIATION > HEAT FLUX

Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC RADIATION > SOLAR RADIATION

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 > 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 > 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_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 > CRYOSPHERE > FROZEN GROUND > SOIL TEMPERATURE

Theme_Keyword: EARTH SCIENCE > LAND SURFACE > FROZEN GROUND > SOIL TEMPERATURE

Theme_Keyword: MODELS

Theme_Keyword: CLPX > COLD LAND PROCESSES FIELD EXPERIMENT

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: Snow Melt

Theme_Keyword: Snow Pack Water Equivalent

Theme_Keyword: Snow Water Equivalent

Theme_Keyword: Snowfall

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: BIOTA

Theme_Keyword: CLIMATOLOGY/METEOROLOGY/ATMOSPHERE

Theme_Keyword: GEOSCIENTIFIC INFORMATION

Theme_Keyword: INLAND WATERS

Theme_Keyword: ENGLISH

Place:

Place_Keyword_Thesaurus: GCMD

Place_Keyword: CONTINENT > NORTH AMERICA

Place_Keyword: GEOGRAPHIC REGION > NORTHERN HEMISPHERE

Place_Keyword: CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > COLORADO

Place_Keyword: CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > WYOMING

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

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

Spatial_Reference_Information:

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: NASA/GSFC/SED/ESD/HBSL/HSB > Hydrological Sciences Branch, Hydrospheric and Biospheric Sciences Laboratory, Earth Sciences Division, Science and Exploration Directorate, Goddard Space Flight Center, NASA

Contact_Person: BRIAN COSGROVE

Contact_Position: DATA CENTER CONTACT

Contact_Address:

Address_Type: Mailing and Physical Address

Address: NASA

Address: Goddard Space Flight Center

Address: Mailstop 614.3

City: Greenbelt

State_or_Province: MD

Postal_Code: 20771

Country: USA

Contact_Voice_Telephone: 301-286-5084

Contact_Electronic_Mail_Address: brian.a.cosgrove@nasa.gov

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:

Format_Name: ASCII

Transfer_Size: appx. 225 MB per month. 6.75 GB total

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

http://neptune.gsfc.nasa.gov/hsb/

Access_Instructions:

DATA CENTER URL

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.

Fees: Not Available

Metadata_Reference_Information:

Metadata_Date: 20030819

Metadata_Review_Date: 20120515

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