Global Data Assimilation System (GDAS)

Metadata Updated: February 27, 2019

The Global Data Assimilation System (GDAS) is the system used by the Global Forecast System (GFS) model to place observations into a gridded model space for the purpose of starting, or initializing, weather forecasts with observed data. GDAS adds the following types of observations to a gridded, 3-D, model space: surface observations, balloon data, wind profiler data, aircraft reports, buoy observations, radar observations, and satellite observations. GDAS data are available as both input observations to GDAS and gridded output fields from GDAS. Gridded GDAS output data can be used to start the GFS model. Due to the diverse nature of the assimilated data types, input data are available in a variety of data formats, primarily Binary Universal Form for the Representation of meteorological data (BUFR) and Institute of Electrical and Electronics Engineers (IEEE) binary. The GDAS output is World Meteorological Organization (WMO) Gridded Binary (GRIB).

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Downloads & Resources

Dates

Metadata Date November 5, 2018
Metadata Created Date September 26, 2015
Metadata Updated Date February 27, 2019
Reference Date(s) January 1, 2001 (publication)
Frequency Of Update daily

Metadata Source

Harvested from NOAA CSW Harvest Source

Additional Metadata

Resource Type Dataset
Metadata Date November 5, 2018
Metadata Created Date September 26, 2015
Metadata Updated Date February 27, 2019
Reference Date(s) January 1, 2001 (publication)
Responsible Party DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce (Point of Contact)
Contact Email
Access Constraints
Bbox East Long 180.0
Bbox North Lat 90.0
Bbox South Lat -90.0
Bbox West Long -180.0
Coupled Resource
Frequency Of Update daily
Guid gov.noaa.ncdc:C00379
Harvest Object Id c9ff92b6-2fca-429e-8b86-668f14a5f2fa
Harvest Source Id 2aed8e29-fc5b-4cde-aa66-fb1118fd705e
Harvest Source Title NOAA CSW Harvest Source
Licence
Metadata Language
Metadata Type geospatial
Progress onGoing
Spatial Data Service Type
Spatial Reference System
Spatial Harvester True
Temporal Extent Begin 2001-01-01

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