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GLDAS Noah Land Surface Model L4 3 hourly 1.0 x 1.0 degree Early Product V2.1 (GLDAS_NOAH10_3H_EP) at GES DISC

Metadata Updated: December 6, 2023

NASA Global Land Data Assimilation System Version 2 (GLDAS-2) has three components: GLDAS-2.0, GLDAS-2.1, and GLDAS-2.2. GLDAS-2.0 is forced entirely with the Princeton meteorological forcing input data and provides a temporally consistent series from 1948 through 2014. GLDAS-2.1 is forced with a combination of model and observation data from 2000 to present. GLDAS-2.2 product suites use data assimilation (DA), whereas the GLDAS-2.0 and GLDAS-2.1 products are "open-loop" (i.e., no data assimilation). The choice of forcing data, as well as DA observation source, variable, and scheme, vary for different GLDAS-2.2 products.

GLDAS-2.1 data products are now available in two production streams: one stream is forced with combined forcing data including GPCP version 1.3 (the main production stream), and the other stream is processed without this forcing data (the early production stream). Since the GPCP Version 1.3 data have a 3-4 month latency, the GLDAS-2.1 data products are first created without it, and are designated as Early Products (EPs), with about 1.5 month latency. Once the GPCP Version 1.3 data become available, the GLDAS-2.1 data products are processed in the main production stream and are removed from the Early Products archive.

This data product is an Early Product for GLDAS-2.1 Noah 1.0 degree 3-hourly dataset.

The 3-hourly data product was simulated with the Noah Model 3.6 in Land Information System (LIS) Version 7. The data product contains 36 land surface fields from January 2000 to present.

The GLDAS-2.1 simulation started on January 1, 2000 using the conditions from the GLDAS-2.0 simulation. This simulation was forced with National Oceanic and Atmospheric Administration (NOAA)/Global Data Assimilation System (GDAS) atmospheric analysis fields (Derber et al., 1991), the disaggregated Global Precipitation Climatology Project (GPCP) V1.3 Daily Analysis precipitation fields (Adler et al., 2003; Huffman et al., 2001), and the Air Force Weather Agency's AGRicultural METeorological modeling system (AGRMET) radiation fields. The simulation used with GDAS and GPCP only from 2000 to February 2001, followed by addition of AGRMET for March 1, 2001 onwards.

The GLDAS-2.1 products supersede their corresponding GLDAS-1 products.

The GLDAS-2.1 data are archived and distributed in NetCDF format.

Access & Use Information

Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

Downloads & Resources



Metadata Created Date November 12, 2020
Metadata Updated Date December 6, 2023

Metadata Source

Harvested from NASA Data.json

Graphic Preview

GLDAS-2.1 Noah 3-ourly 1.0 degree soil moisture (0-10 cm) [kg m-2] for 00Z Dec 01, 2019.

Additional Metadata

Resource Type Dataset
Metadata Created Date November 12, 2020
Metadata Updated Date December 6, 2023
Identifier C1700900671-GES_DISC
Data First Published 2020-02-18
Language en-US
Data Last Modified 2020-02-18
Category GLDAS, geospatial
Public Access Level public
Bureau Code 026:00
Metadata Context
Metadata Catalog ID
Schema Version
Catalog Describedby
Citation Beaudoing, H. and M. Rodell, NASA/GSFC/HSL. 2020-02-18. GLDAS_NOAH10_3H_EP. Version 2.1. GLDAS Noah Land Surface Model L4 3 hourly 1.0 x 1.0 degree Early Product V2.1. Greenbelt, Maryland, USA. Archived by National Aeronautics and Space Administration, U.S. Government, Goddard Earth Sciences Data and Information Services Center (GES DISC). Digital Science Data.
Creator Beaudoing, H. and M. Rodell, NASA/GSFC/HSL
Data Presentation Form Digital Science Data
Graphic Preview Description GLDAS-2.1 Noah 3-ourly 1.0 degree soil moisture (0-10 cm) kg m-2 for 00Z Dec 01, 2019.
Graphic Preview File
Harvest Object Id 0349816e-92fe-4048-9b7b-89be60a722e5
Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
Harvest Source Title NASA Data.json
Homepage URL
Metadata Type geospatial
Old Spatial -180.0 -60.0 180.0 90.0
Program Code 026:001
Related Documents
Release Place Greenbelt, Maryland, USA
Series Name GLDAS_NOAH10_3H_EP
Source Datajson Identifier True
Source Hash f729afe5c4f7d7ca3121b70c7478b5136c62b3c1698fb1d2f1ce7415fed5e277
Source Schema Version 1.1
Temporal 2019-12-01T00:00:00Z/2022-01-17T00:00:00Z

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