GMAO Products

GMAO generates GEOS-5 data products in near real time or reanalysis modes in support of diverse user communities. Starting in February 2013, GEOS-5 forward processing is conducted in two separate streams. These are called (1) Forward Processing (FP) and (2) Forward Processing for Instrument Teams (FP-IT).

The FP stream generates forecasts as well as assimilation products using the most current system approved for near-real-time production. FP products are primarily used for real time support for NASA field campaigns, support for NASA science, GEOS system evaluation, and interaction with other data assimilation centers. The FP system is updated as the GEOS system improves and is transitioned to production status.

The FP-IT stream generates only assimilation products. FP-IT processing uses a "semi-frozen" GEOS-5 system to ensure long-term continuity and reproducibility. FP-IT products serve primarily the NASA EOS Instrument Teams who require stable products over a long period of time. Reprocessing of historical periods using the FP-IT system is conducted as needed in coordination with Instrument Teams.

The product generation uses HEC resources at GSFC's NASA Center For Climate Simulation (NCCS).

NOTICES

• [ 23 December 2013 ]   Effective on December 20, 2013 GEOS-5 FP forecasts initialized at 00 Z are 10 days in duration. The daily 12z forecast will continue to be 5 days in length.

• [ 4 September 2013 ]   The GEOS-5 FP system was upgraded from GEOS-5.7.2 to GEOS-5.11.0 on June 11, 2013

• [ 7 June 2013 ]   Production of GEOS-5.2.0 ended on June 2, 2013.

IMPORTANT: Forecasts using the GEOS system are experimental and are produced for research purposes only. Use of these forecasts for purposes other than research is not recommended.

GEOS-5 Atmospheric Assimilation Products
GEOS-5
Product
Identifier
Product
Description
GEOS-5
Version
Used
Periods
Covered
Data
Access
Documentation
GEOS-5 FP

NRT assimilation (DAS), 10-d fcst at 00z, and 5-d fcst at 12z (See schedule above.)

See details
5.11.0
6/11/2013 - on-going
For technical information on data access, see the associated "README" file.
GEOS-5 FP-IT
NRT Assimilation products
(See schedule above.)

See details
5.9.1
1/1/2000 - on-going
Near-realtime distribution to operational users via GES DISC *
G5.7.2

Archived DAS data

See details (spatial resolution, frequency, input data, known problems,...)
5.7.2
8/18/2011 - 6/10/2013
Restricted to NASA Instrument Teams
G5.2.0
Archived DAS data

See details (spatial resolution, frequency, input data, known problems,...)
5.2.0
8/14/2008 - 6/2/2013
Restricted to NASA Instrument Teams
G5.1.0
Archived DAS data
5.1.0
10/1/2003 - 10/2/2008
Restricted to NASA Instrument Teams
G5.0.1
Archived DAS data
5.0.1
8/1/2004 - 1/3/2008
Restricted to NASA Instrument Teams
MERRA
Reanalysis for the satellite era.
For more details visit MERRA on the GMAO web site.
5.2.0
1/1/1979 - on-going
Data available at MDISC, managed by GES DISC
G5-YOTC
5-day forecasts at a high horizontal resolution and assimilation products generated in support of the YOTC project
5.3.0,
5.4.0,
5.4.1
1/1/2008 - 4/20/2010
Contact GMAO if you would like access to this data
G5.4.1-CERES
Assimilation products generated using a reduced set of input observations.
5.4.1
12/01/1997 - on-going
Restricted to NASA CERES Team
G5-CERES
Assimilation products generated using a reduced set of input observations.
5.2.0
12/1/2007 - on-going
Restricted to NASA CERES Team

GEOS Data Product Users:

Representative users of GEOS-5 Data include

montage of NASA field campaign photos
(ARCTAS campaign photos courtesy NASA's ESPO.)

GEOS-5 Product Contact Information:

* Please contact Gi-Kong Kim (Gi-Kong.Kim@nasa.gov) to request product access through the GES DISC.

** For answers to questions about the GEOS-5 products on the NCCS data portal or accessibility of those products, please send email to: geos5-nrt@lists.nasa.gov

Request for Acknowledgment of Use of GMAO Data Sets

Users of GMAO data sets are requested to reference the source of the data in any publication, e.g.
"The GEOS-5 data used in this study/project have been provided by the Global Modeling and Assimilation Office (GMAO) at NASA Goddard Space Flight Center."

Users who retrieve GEOS-5 data directly through the data portal links might use this acknowledgement:
"The GEOS-5 data used in this study/project have been provided by the Global Modeling and Assimilation Office (GMAO) at NASA Goddard Space Flight Center through the online data portal in the NASA Center for Climate Simulation".

Users of MERRA data might use this acknowledgement:
"MERRA data used in this study/project have been have been provided by the Global Modeling and Assimilation Office (GMAO) at NASA Goddard Space Flight Center through the NASA GES DISC online archive".