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title28-11-2006 ECMWF

ECMWF upgraded its Ensemble Prediction System (EPS) and introduced the Variable Resolution Ensemble Prediction System (VarEPS). In particular, the forecast range was extended to 15 days using the VarEPS system with a resolution of T399 L62 for day 1 to day 10 (leg 1) and T255 L62 for T+246 to day 15 (leg 2).

JMA

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title30-03-2021 JMA

The JMA updated their Global EPS on March 30 2021.

The major changes are:

  • Increase of the number of vertical layers from 100 to 128 for GSM and GEPS
  • Increase of the number of ensemble members in GEPS from 27 to 51
  • Revision of the global snow analysis
  • Introduction of the global soil moisture analysis


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title19-01-2017 JMA

The JMA updated their Global EPS (previously named One-week EPS) at 00UTC of 19th  January 2017.

Major The major changes are:

  • The vertical resolution of the Global EPS model is increased from
  • TL479L60 to TL479L100
  • Perturbations from LETKF are introduced for initial perturbations.
  • Perturbations to sea surface temperature are introduced.
  • The name of the EPS is renamed from One-week EPS to Global EPS

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