GLDAS Catchment Land Surface Model L4 daily 0.25 x 0.25 degree GRACE-DA1 V2.2 (GLDAS_CLSM025_DA1_D) at GES DISC
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-2.2 is new to the GES DISC archive and currently includes a main product from CLSM-F2.5 with Data Assimilation for the Gravity Recovery and Climate Experiment (GRACE-DA) from February 2003 to present. The GLDAS-2.2 data are available in two production streams: one with GRACE data assimilation outputs (the main production stream), and one without GRACE-DA (the early production stream). Since the GRACE data have a 2-6 month latency, the GLDAS-2.2 data are first created without GRACE-DA, and are designated as the Early Product (EP), with about 1 month latency. Once the GRACE data become available, the GLDAS-2.2 data are processed with GRACE-DA in the main production stream and are removed from the Early Product archive. The GLDAS-2.2 GARCE-DA product was simulated with Catchment-F2.5 in Land Information System (LIS) Version 7. The data product contains 24 land surface fields from February 1, 2003 to present. The simulation started on February 1, 2003 using the conditions from the GLDAS-2.0 Daily Catchment model simulation, forced with the meteorological analysis fields from the operational European Centre for Medium-Range Weather Forecasts (ECMWF) Integrated Forecasting System. The total terrestrial water anomaly observation from GRACE satellite was assimilated (Li et al, 2019). Due to the data agreement with ECMWF, this GLDAS-2.2 daily product does not include the meteorological forcing fields. The GLDAS-2.2 data are archived and distributed in NetCDF format.
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| Spatial Extent: | Bounding Rectangle: N: 90 S: -60 E: 180 W: -180 |
Data Format(s): | Distribution: netCDF |
| Temporal Extent: | Platform(s): | Catchment-LSM | |
| Data Center(s): | NASA/GSFC/SED/ESD/GCDC/GESDISC | Instrument(s): | NOT APPLICABLE |
| Version: | 2.2 | ||
- Title: GLDAS Catchment Land Surface Model L4 daily 0.25 x 0.25 degree GRACE-DA1 V2.2
- Version: 2.2
- Creator: Li, B., H. Beaudoing, and M. Rodell, NASA/GSFC/HSL
- Publisher: Goddard Earth Sciences Data and Information Services Center (GES DISC)
- Release Date: 2020-02-25T00:00:00.000Z
- Linkage: https://disc.gsfc.nasa.gov/datacollection/GLDAS_CLSM025_DA1_D_2.2.html
- READ-ME: https://hydro1.gesdisc.eosdis.nasa.gov/data/GLDAS/GLDAS_CLSM025_DA1_D.2.2/doc/README_GLDAS2.pdf, README Document
- HOW-TO: https://disc.gsfc.nasa.gov/information/howto?tags=hydrology, How to read and plot the data.
- GENERAL DOCUMENTATION: https://disc.gsfc.nasa.gov/information/documents?title=Hydrology%20Documentation, GES DISC Hydrology Documentation
Collection Information
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Version Description
NASA 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 time 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). Choice of forcing data, as well as DA observation source, variable, and scheme vary for different GLDAS-2.2 products. Currently, the GLDAS-2.2 products include Data Assimilation (DA) from the Gravity Recovery and Climate Experiment (GRACE). The GLDAS-2.2 GRACE-DA products are available in two production streams: one with GRACE-DA (the main production stream), and one without GRACE-DA (the early production stream). Since the GRACE data data have a 2-6 month latency, the GLDAS-2.2 data are first created without GRACE-DA, and are designated as Early Product (EP), with about 1 month latency. Once the GRACE data become available, the GLDAS-2.2 data are processed with GRACE-DA in the main production stream and are removed from the Early Product archive. This data product is the main product for GLDAS-2.2 Catchment Land Surface Model daily 0.25 x 0.25 degree with GRACE-DA. -
DOI
10.5067/TXBMLX370XX8
- Search for granules from this collection
Data Identification
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Processing Level
4
- Quality 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.
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Collection Progress
Complete
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Use Constraints
None
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Access Constraints
None
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Title: The Global Land Data Assimilation System
Publication Date: 2004-01-01
Author(s): Rodell, M., P.R. Houser, U. Jambor, J. Gottschalck, K. Mitchell, C. Meng, K. Arsenault, B. Cosgrove, J. Radakovich, M. Bosilovich, J.K. Entin, J.P. Walker, D. Lohmann, and D. Toll
DOI: 10.1175/BAMS-85-3-381
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Title: Global GRACE data assimilation for groundwater and drought monitoring: Advances and challenges
Publication Date: 2019-01-01
Author(s): Li, B., M. Rodell, S. Kumar, H. Beaudoing, A. Getirana, B. F. Zaitchik, et al.
DOI: 10.1029/2018wr024618
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Title: High resolution CSR GRACE RL05 mascons. Journal of Geophysical Research
Publication Date: 2016-01-01
Author(s): Save, H., S. Bettadpur and B. D. Tapley
DOI: 10.1002/2016JB013007
Data Dates
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| Last Revision |
Publication References
Related URLs
Other Descriptive Keywords
Ancillary Keywords
- Hydrology
ISO Topic Categories
- CLIMATOLOGY/METEOROLOGY/ATMOSPHERE
Acquisition Information
Projects
| Project Short Name | Campaigns | Project Dates |
|---|---|---|
| GLDAS | No campaigns listed. | No dates provided. |
Temporal Information
Spatial Information
| Coverage Type | Zone Identifier | Geometry | Granule Representation |
|---|---|---|---|
| HORIZONTAL | CARTESIAN | CARTESIAN |
Location Keywords
- GEOGRAPHIC REGION
- GLOBAL LAND
Data Centers
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NASA/GSFC/SED/ESD/GCDC/GESDISC
ARCHIVERGoddard 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
This data center does not have any addresses listed.
This data center does not have any contact mechanisms listed.
Data Contacts
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HUALAN RUI
Metadata AuthorHUALAN RUI
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Goddard Earth Sciences Data and Information Services Center
Code 610.2
NASA Goddard Space Flight Center
Greenbelt, MD 20771
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GES DISC HELP DESK SUPPORT GROUP
Data Center ContactGES DISC HELP DESK SUPPORT GROUP
NASA/GSFC/SED/ESD/GCDC/GESDISC-
Goddard Earth Sciences Data and Information Services Center
Code 610.2
NASA Goddard Space Flight Center
Greenbelt, MD 20771
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Archive And Distribution Information
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Format: netCDF
Format Type: Native
Media: Online Archive
Fees: No Fee