GLDAS Noah Land Surface Model L4 monthly 1.0 x 1.0 degree V020 (GLDAS_NOAH10_M) at GES DISCEntry ID: GES_DISC_GLDAS_NOAH10_M_V020
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/...
Data Set Citation
Dataset Originator/Creator: Hydrological Sciences Branch at NASA/Goddard Space Flight Center (GSFC/HSB)
Dataset Title: GLDAS Noah Land Surface Model L4 monthly 1.0 x 1.0 degree Version 2.0
Dataset Release Date: 10.01.2012
Dataset Release Place: Greenbelt, Maryland, USA
Dataset Publisher: Goddard Earth Sciences Data and Information Services Center (GES DISC)
Version: 020Online Resource: http://disc.sci.gsfc.nasa.gov/hydrology/index.shtml
Start Date: 1948-01-01
Latitude Resolution: 1 degree
Longitude Resolution: 1 degree
Temporal Resolution: monthly
ATMOSPHERE > ATMOSPHERIC PRESSURE > SURFACE PRESSURE
ATMOSPHERE > ATMOSPHERIC RADIATION > HEAT FLUX
ATMOSPHERE > ATMOSPHERIC RADIATION > LONGWAVE RADIATION
ATMOSPHERE > ATMOSPHERIC RADIATION > SHORTWAVE RADIATION
ATMOSPHERE > ATMOSPHERIC TEMPERATURE > SURFACE AIR TEMPERATURE
ATMOSPHERE > ATMOSPHERIC WATER VAPOR > EVAPOTRANSPIRATION
ATMOSPHERE > ATMOSPHERIC WATER VAPOR > HUMIDITY
ATMOSPHERE > ATMOSPHERIC WINDS > SURFACE WINDS
ATMOSPHERE > PRECIPITATION > RAIN
ATMOSPHERE > PRECIPITATION > SNOW
LAND SURFACE > LAND TEMPERATURE > LAND SURFACE TEMPERATURE
LAND SURFACE > SOILS > SOIL MOISTURE/WATER CONTENT
LAND SURFACE > SOILS > SOIL TEMPERATURE
TERRESTRIAL HYDROSPHERE > SNOW/ICE > SNOW WATER EQUIVALENT
TERRESTRIAL HYDROSPHERE > SURFACE WATER > RUNOFF
CLIMATE INDICATORS > ATMOSPHERIC/OCEAN INDICATORS > HUMIDITY INDICES > HUMIDITY INDEX
Quality Background information is given in:
Dijkshoorn JA, van Engelen VWP and Huting JRM 2008. Soil and landform properties for LADA partner countries (Argentina, China, Cuba, Senegal and The Gambia, South Africa and Tunisia). ISRIC report 2008/06 and GLADA report 2008/03, ISRIC – World Soil Information and FAO, Wageningen. To be downloaded from: http://www.isric.org/isric/webdocs/Docs/ISRIC_Report_2008_06.pdf
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Distribution Media: Internet (downloadable data )
Distribution Size: 3.4 Mb (zipped)
Email: koos.dijkshoorn at wur.nl
Postal Code: 6700AJ
Role: TECHNICAL CONTACT
Phone: + 31 317 471736
Fax: + 31 317 471700
Email: vincent.vanengelen at wur.nl
ISRIC World Soil Information P.O. Box 353
Postal Code: 6700 AJ
Dijkshoorn JA, van Engelen VWP and Huting JRM 2008. Soil and landform properties for LADA partner countries (Argentina, China, Cuba, Senegal and The Gambia, South Africa and Tunisia). ISRIC report 2008/06 and GLADA report 2008/03, ISRIC – World Soil Information and FAO, Wageningen http://www.isric.org/isric/Webdocs/Docs/ISRIC_Report_2008_06.pdf
Huting JRM, Dijkshoorn JA, van Engelen ... VWP 2008. GIS procedures for mapping SOTER landform for the LADA partner countries (Argentina, China, Cuba, Senegal and The Gambia, South Africa and Tunisia). ISRIC report 2008/04 and GLADA report 2008/02, ISRIC – World Soil Information and FAO, Wageningen
Dijkshoorn JA, Huting JRM and Tempel P 2005. Update of the 1:5 million Soil and
Terrain Database for Latin America and the Caribbean (SOTERLAC; version 2.0).
Report 2005/01, ISRIC World Soil Information, Wageningen.
FAO,ISRIC,UNEP and CIP 1998. Soil and terrain database for Latin America and the Caribbean(version 1.02), scale 1:5 million. FAO Land and Water Digital Media Series No.5.
van Engelen VWP and Wen TT 1995. Global and national Soil and Terrain Digital Database (SOTER) Procedures Manual. ISRIC-World Soil Information.
Creation and Review Dates
DIF Creation Date: 2009-03-02
Last DIF Revision Date: 2011-09-12