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Platforms > Other > Models > ERA15DAS

Preferred term

ERA15DAS  

Definition

  • The ERA-15 data assimilation system is a special version of the ECMWF Operational data assimilation system which incorporates: - Intermittent statistical (Optimum Interpolation) analysis with 6-hour cycling. - One dimensional variational (1D-VAR) physical retrieval of TOVS (Tiros Operational Vertical Sounder) cloud cleared radiance (CCR) data. - Diabatic, non-linear normal mode initialisation (five vertical modes). - A spectral T106 forecast model with 31 hybrid vertical model levels, and a fully three-dimensional semi-Lagrangian advection scheme. - A physical parametrization package including: -- mean orography with a compatible parametrization of sub-grid scale orography; -- a four layer prognostic soil scheme with no external forcing; -- an interactive cloud/radiation scheme with full model representation of cloud water content and cloud cover; -- a planetary boundary layer parametrization based on similarity (en)

Broader concept

Change note

  • 2015-08-10 14:42:27.0 [epneff] Insert Concept add broader relation (ERA15DAS [d022dc0f-0ce8-471a-ac6c-aabb48542cf4,158219] - Models/Analyses [113ecbc2-ab36-4d58-a96c-a6ce0106e749,143215]);
  • 2015-08-10 14:42:44.0 [epneff] Added long name insert AltLabel (id: null text: ERA15 Data Assimilation System language code: en);
  • 2021-11-30 13:34:16.0 [tstevens] Move Concepts delete broader relation (null); add broader relation (ERA15DAS [d022dc0f-0ce8-471a-ac6c-aabb48542cf4,826765] - Models [0a184cdc-c074-4946-90a6-02f03c686341,835911]);
  • 2022-03-11 08:38:26.0 [tstevens] insert Definition (id: null text: The ERA-15 data assimilation system is a special version of the ECMWF Operational data assimilation system which incorporates: - Intermittent statistical (Optimum Interpolation) analysis with 6-hour cycling. - One dimensional variational (1D-VAR) physical retrieval of TOVS (Tiros Operational Vertical Sounder) cloud cleared radiance (CCR) data. - Diabatic, non-linear normal mode initialisation (five vertical modes). - A spectral T106 forecast model with 31 hybrid vertical model levels, and a fully three-dimensional semi-Lagrangian advection scheme. - A physical parametrization package including: -- mean orography with a compatible parametrization of sub-grid scale orography; -- a four layer prognostic soil scheme with no external forcing; -- an interactive cloud/radiation scheme with full model representation of cloud water content and cloud cover; -- a planetary boundary layer parametrization based on similarity language code: en);

URI

https://gcmd.earthdata.nasa.gov/kms/concept/d022dc0f-0ce8-471a-ac6c-aabb48542cf4

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