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GLOBAL MODELING AND ASSIMILATION OFFICE
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DAS OPERATIONAL PRODUCTS

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Content last updated: 31 April 2010

The GMAO supports a variety of customers with operational, reanalysis and reprocessing and mission products. Operational and specialized mission products are generated real time from the Data Assimilation System (DAS) that operates 24 hours a day/7 days a week. Reanalysis and reprocessing is accomplished utilizing subsets of the DAS designed to meet customer output requirements.

DAS Overview

The GMAO Data Assimilation System (DAS) is executed four times per day for each synoptic time. Two forecasts are generally produced for the 0Z and 12Z global data collection cycles. The input data are GDAS output files with additional data from AIRS observations. Output products are delivered to the Goddard archive on the morning of the next day and in near realtime to the NCCS data portal during mission (field campaign) support.

Operational Products

Known Operational Issues

Recent DAS Modifications


GMAO Website Curator: James Gass
Responsible NASA Official: Steven Pawson
Last Modified: 2010-05-20 EDT