GLDAS Noah Land Surface Model L4 monthly 1.0 x 1.0 degree Version 2.0

Federal Geographic Data Committee (FGDC) Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: Hydrological Sciences Branch at NASA/Goddard Space Flight Center (GSFC/HSB)
Publication_Date: 10.01.2012
Title: GLDAS Noah Land Surface Model L4 monthly 1.0 x 1.0 degree Version 2.0
Edition: 020
Geospatial_Data_Presentation_Form:
Series_Information:
Series_Name:
Issue_Identification:
Publication_Information:
Publication_Place: Greenbelt, Maryland, USA
Publisher: Goddard Earth Sciences Data and Information Services Center (GES DISC)
Other_Citation_Details:
Online_Linkage: http://disc.sci.gsfc.nasa.gov/hydrology/index.shtml
Description:
Abstract:
Global Land Data Assimilation System Version 2 (hereafter, GLDAS-2) has two components: one forced entirely with the Princeton meteorological forcing data (hereafter, GLDAS-2.0), and the other forced with a combination of model and observation based forcing data sets (hereafter, GLDAS-2.1). This data set, GLDAS-2.0 1.0 degree monthly generated through temporal averaging of the 3-hourly data, contains a series of land surface parameters simulated from the Noah Model 3.3, currently covers from 1948 to 2010 and will be extended to recent years as the data set becomes available. The model simulation was initialized on simulation date January 1, 1948, using soil moisture and other state fields from the LSM climatology for that day of the year. The simulation was forced by the global meteorological forcing data set from Princeton University (Sheffield et al., 2006). The simulation used the common GLDAS data sets for land cover (MCD12Q1: Friedl et al., 2010), land water mask (MOD44W: Carroll et al., 2009), soil texture (Reynolds, 1999), and elevation (GTOPO30). The MODIS based land surface parameters are used in the current GLDAS-2.x products while the AVHRR base parameters were used in GLDAS-1 and previous GLDAS-2 products (prior to October 2012). The main objective for Version 2 is to create more climatologically consistent data sets using the Princeton forcing data sets extending from 1948. In Version 1, forcing sources switched several times throughout the record from 1979 to present, which introduced unnatural trends and exhibited highly uncertain forcing fields in 1995-1997. Other enhancements made in Version 2 include model version upgrade, switching to MODIS based land surface parameter data sets, and initialization of soil moisture over desert. In NOAH model, the bottom layer temperature data set was also updated. More details regarding the land surface parameter data changes at http://ldas.gsfc.nasa.gov/gldas/. WGRIB or other GRIB reader is required to read the files. The data set applies a user-defined parameter table to indicate the contents and parameter numbers. The following table shows a list of parameters, their Product Definition Section (PDS) IDs and units. PDS_IDs Full_Name Unit 84 Surface Albedo, All Wavelengths unitless 148 Average Surface Temperature K 223 Plant canopy surface water kg/m^2 200 Canopy water evaporation kg/m^2/s 199 Bare soil evaporation kg/m^2/s 57 Total Evapotranspiration kg/m^2/s 205 Surface incident longwave radiation W/m^2 112 Net Longwave Radiation W/m^2 1 Surface pressure Pa 59 Total precipitation rate kg/m^2/s 51 Near surface specific humidity kg/kg 155 Ground Heat Flux W/m^2 122 Sensible Heat Flux W/m^2 121 Latent Heat Flux W/m^2 235 Surface Runoff kg/m^2/s 234 Subsurface Runoff kg/m^2/s 99 Snowmelt kg/m^2/s 162 Rainfall rate kg/m^2/s 173 Root zone soil moisture kg/m^2 65 Snow Water Equivalent kg/m^2 204 Surface incident shortwave radiation W/m^2 111 Net Shortwave Radiation W/m^2 66 Snow Depth m 161 Snowfall rate kg/m^2/s 86 0-10 cm underground Soil moisture content kg/m^2 86 10-40 cm underground Soil moisture content kg/m^2 86 40-100 cm underground Soil moisture content kg/m^2 86 100-200 cm underground Soil moisture content kg/m^2 85 0-10 cm underground Soil temperature K 85 10-40 cm underground Soil temperature K 85 40-100 cm underground Soil temperature K 85 100-200 cm underground Soil temperature K 210 surface Vegetation transpiration kg/m^2/s 11 surface Near surface air temperature K 32 surface Near surface wind speed m/s There are four vertical levels for the Soil Moisture (PDS 086) and Soil Temperature (PDS 085) in the GRIB file. For more information, please see http://hydro1.sci.gsfc.nasa.gov/data/s4pa/GLDAS/GLDAS_NOAH10_M.020/doc/README.GLDAS2.pdf
Purpose:
Not Available
Supplemental_Information:
REFERENCE: Rodell, M., 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, and D. Toll, The Global Land Data Assimilation System, Bull. Amer. Meteor. Soc., 85(3): 381-394, 2004.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 19480101
Ending_Date: Unknown
Currentness_Reference:Unknown
Status:
Progress: In Work
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Description_of_Geographic_Extent:
Bounding_Coordinates:
West_Bounding_Coordinate: -180.0
East_Bounding_Coordinate: 180.0
North_Bounding_Coordinate: 90.0
South_Bounding_Coordinate: -60.0
Keywords:
Theme:
Theme_Keyword_Thesaurus: GCMD SCIENCE PARAMETERS
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 RADIATION > HEAT FLUX
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC RADIATION > LONGWAVE RADIATION
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC RADIATION > SHORTWAVE RADIATION
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC TEMPERATURE > SURFACE AIR TEMPERATURE
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WATER VAPOR > EVAPOTRANSPIRATION
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WATER VAPOR > HUMIDITY
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WINDS > SURFACE WINDS
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > PRECIPITATION > RAIN
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > PRECIPITATION > SNOW
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 > TERRESTRIAL HYDROSPHERE > SNOW/ICE > SNOW WATER EQUIVALENT
Theme_Keyword: EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > SURFACE WATER > RUNOFF
Theme_Keyword: EARTH SCIENCE > CLIMATE INDICATORS > ATMOSPHERIC/OCEAN INDICATORS > HUMIDITY INDICES > HUMIDITY INDEX
Theme_Keyword: EOSDIS > EARTH OBSERVING SYSTEM DATA INFORMATION SYSTEM
Theme_Keyword: ESIP > EARTH SCIENCE INFORMATION PARTNERS PROGRAM
Theme_Keyword: GLDAS > GLOBAL LAND DATA ASSIMILATION SYSTEM
Theme_Keyword: CWIC > CEOS WGISS INTEGRATED CATALOG
Theme_Keyword: Hydrology
Theme_Keyword: CLIMATOLOGY/METEOROLOGY/ATMOSPHERE
Theme_Keyword: ENGLISH
Place:
Place_Keyword_Thesaurus: GCMD
Place_Keyword: GEOGRAPHIC REGION > ARCTIC
Place_Keyword: GEOGRAPHIC REGION > GLOBAL
Place_Keyword: GEOGRAPHIC REGION > POLAR
Temporal:
Temporal_Keyword_Thesaurus: GCMD
Temporal_Keyword: Monthly
Access_Constraints: None
Use_Constraints:
None
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: GES DISC HELP DESK SUPPORT GROUP
Contact_Position: TECHNICAL CONTACT
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Goddard Earth Sciences Data and Information Services Center
Address: Code 610.2
Address: NASA Goddard Space Flight Center
City: Greenbelt
State_or_Province: MD
Postal_Code: 20771
Country: USA
Contact_Voice_Telephone: 301-614-5224
Contact_Facsimile_Telephone: 301-614-5268
Contact_Electronic_Mail_Address: gsfc-help-disc@lists.nasa.gov
Browse_Graphic:
Browse_Graphic_File_Name: http://hydro1.sci.gsfc.nasa.gov/data/browse/GLDAS/GLDAS_NOAH10_M/1948/GLDAS_NOAH10_M.020_SoilM0_10cm_Jan1948.gif
Browse_Graphic_File_Description:
GLDAS-2.0 Noah Monthly 1.0 degree Average Layer 1 (0-10 cm) Soil Moisture Jan. 1948 [kg/m2]
Browse_Graphic_File_Type: GIF
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Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
The data are provisional and subject to change as model improvements are implemented and new input data sets become available. Due to the fact that forcing data for Greenland are unreliable and the lack of a glacier/ice sheet model, snow water equivalent accumulates indefinitely in Greenland and a few other Arctic points. Therefore it is highly recommended that Greenland and other points with abnormally large snow water equivalent values be masked out when performing global analyses.
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:
Horizontal_Coordinate_System_Definition:
Geographic:
Latitude_Resolution: 1 degree
Longitude_Resolution: 1 degree
Geographic_Coordinate_Units: Decimal degrees
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Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: NASA/GSFC/SED/ESD/GCDC/GESDISC > Goddard Earth Sciences Data and Information Services Center (formerly Goddard DAAC), Global Change Data Center, Earth Sciences Division, Science and Exploration Directorate, Goddard Space Flight Center, NASA
Contact_Person: GES DISC HELP DESK SUPPORT GROUP
Contact_Position: DATA CENTER CONTACT
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Goddard Earth Sciences Data and Information Services Center
Address: Code 610.2
Address: NASA Goddard Space Flight Center
City: Greenbelt
State_or_Province: MD
Postal_Code: 20771
Country: USA
Contact_Voice_Telephone: 301-614-5224
Contact_Facsimile_Telephone: 301-614-5268
Contact_Electronic_Mail_Address: gsfc-help-disc@lists.nasa.gov
Resource_Description: GES_DISC_GLDAS_NOAH10_M_V020
Distribution_Liability:
Not Available
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: GRIB
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://disc.gsfc.nasa.gov/
Access_Instructions:
DATA CENTER URL
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://disc.gsfc.nasa.gov/hydrology/data-holdings
Access_Instructions:
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://reverb.echo.nasa.gov/reverb/#utf8=%E2%9C%93...
Access_Instructions:
Refine your granule search with ECHO's next generation Earth Science discovery tool (Reverb) using information from this record.
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://hydro1.sci.gsfc.nasa.gov/data/s4pa/GLDAS/GL...
Access_Instructions:
README document for GLDAS Version 2 data sets.
Fees: No Fee
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Metadata_Reference_Information:
Metadata_Date: 20120917
Metadata_Review_Date: 20121101
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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