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ESA Data Ontology

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Platforms > Other > Models > ERA40DAS

Preferred term

ERA40DAS  

Definition

  • ERA 40 is a second generation reanalysis. It is the first reanalysis to directly assimilate satellite radiance data (TOVS, SSM/I, ERS and ATOVS). Cloud Motion Winds are also used. The result is better circulation over the tropics and southern hemisphere. However, unless comparing to previous ERA-40 based results, it is recommended that the 3rd generation reanalyses, ERA-Interim or MERRA, be used for new research. (en)

Broader concept

Change note

  • 2015-08-10 14:43:04.0 [epneff] Insert Concept add broader relation (ERA40DAS [260c784e-c422-4279-97fa-9c7a348118fa,158223] - Models/Analyses [113ecbc2-ab36-4d58-a96c-a6ce0106e749,143215]);
  • 2015-08-10 14:43:26.0 [epneff] Added long name insert AltLabel (id: null text: ERA40 Data Assimilation System language code: en);
  • 2021-11-30 13:34:10.0 [tstevens] Move Concepts delete broader relation (null); add broader relation (ERA40DAS [260c784e-c422-4279-97fa-9c7a348118fa,826075] - Models [0a184cdc-c074-4946-90a6-02f03c686341,835911]);
  • 2022-03-11 08:43:20.0 [tstevens] insert Definition (id: null text: ERA 40 is a second generation reanalysis. It is the first reanalysis to directly assimilate satellite radiance data (TOVS, SSM/I, ERS and ATOVS). Cloud Motion Winds are also used. The result is better circulation over the tropics and southern hemisphere. However, unless comparing to previous ERA-40 based results, it is recommended that the 3rd generation reanalyses, ERA-Interim or MERRA, be used for new research. language code: en);

URI

https://gcmd.earthdata.nasa.gov/kms/concept/260c784e-c422-4279-97fa-9c7a348118fa

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