GLDAS-2: Global Land Data Assimilation System (NASA/GLDAS/V020/NOAH/G025/T3H)

Version V020

Global Land Data Assimilation System (GLDAS) ingests satellite and
ground-based observational data products. Using advanced land surface
modeling and data assimilation techniques, it generates optimal
fields of land surface states and fluxes.

GLDAS-2.0 is created to make climatologically consistent datasets using
the Global Meteorological Forcing Dataset from Princeton University.
It contains a series of land surface parameters simulated from the
Noah Model 3.3. It currently covers the period from 1948 to 2010
and will be extended to recent years as the data become available.

The model simulation was initialized on January 1, 1948, using soil
moisture and other state fields from the LSM climatology for that
day of the year. The simulation used the common GLDAS datasets for
land cover, land water mask, soil texture, and elevation. The MODIS-based
land surface parameters are used in the current GLDAS-2.0 products. The data
used in this modelling were acquired as part of the mission of NASA’s
Earth Science Division and archived and distributed by the
Goddard Earth Sciences (GES) Data and Information Services Center (DISC).

SWnetsfcNet short wave radiation flux (surface)W/m^2
LWnetsfcNet long wave radiation flux (surface)W/m^2
QlesfcLatent heat netfluxW/m^2
QhsfcSensible heat fluxW/m^2
QgsfcGround heat fluxW/m^2
SnowfsfcSnowfall ratekg/m^2/s
RainfsfcRainfall ratekg/m^2/s
QssfcSurface runoffkg/m^2/s
QsbsfcSubsurface runoffkg/m^2/s
QsmsfcSnow meltkg/m^2
AvgSurfTsfcAverage surface temperatureK
SWEsfcWater equivalent of accumulated snow depthkg/m^2
SoilM0_10cm0-10cm underground soil moisture contentkg/m^2
SoilM10_40cm10-40cm underground soil moisture contentkg/m^2
SoilM40_100cm40-100cm underground soil moisture contentkg/m^2
SoilM100_200cm100-200cm underground soil moisture contentkg/m^2
TSoil0_10cm0-10cm underground soil temperatureC
TSoil10_40cm10-40cm underground soil temperatureC
TSoil40_100cm40-100cm underground soil temperatureC
TSoil100_200cm100-200cm underground soil temperatureC
CanopintsfcPlant canopy surface waterkg/m^2
WindsfcWind speedm/s
QairsfcSpecific humiditykg/kg
SWdownsfcSurface incident shortwave radiationW/m^2
LWdownsfcSurface incident longwave radiationW/m^2


NASA (producer, licensor)
Google Earth Engine (host)
STAC Version 0.6.2
Keywords 3-hourly, climate, evaporation, forcing, geophysical, gldas, humidity, ldas, moisture, nasa, precipitation, pressure, radiation, soil, surface, temperature, wind
License proprietary
Temporal Extent 12/31/1947, 4:00:00 PM - 12/30/2010, 4:00:00 PM
Citation 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.
Type image_collection
GSD arc degreesm
Cadence hours
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