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ESA Data Ontology

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Platforms > Other > Models > NCEP-FNL

Preferred term

NCEP-FNL  

Definition

  • 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). (en)

Broader concept

Change note

  • 2015-08-10 14:56:01.0 [epneff] Insert Concept add broader relation (NCEP-FNL [0ea8022d-e6bf-48e0-86ce-e1e7a886b7b1,158255] - Models/Analyses [113ecbc2-ab36-4d58-a96c-a6ce0106e749,143215]);
  • 2015-08-10 14:56:18.0 [epneff] Added long name insert AltLabel (id: null text: NCEP Final Global Data Assimilation System language code: en);
  • 2021-11-30 13:28:29.0 [tstevens] Move Concepts delete broader relation (null); add broader relation (NCEP-FNL [0ea8022d-e6bf-48e0-86ce-e1e7a886b7b1,825975] - Models [0a184cdc-c074-4946-90a6-02f03c686341,835911]);
  • 2022-03-11 13:53:01.0 [tstevens] insert Definition (id: null text: 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). language code: en);

URI

https://gcmd.earthdata.nasa.gov/kms/concept/0ea8022d-e6bf-48e0-86ce-e1e7a886b7b1

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