The ECMWF model was upgraded to cycle 33r2 on 30th September 2008 12Z. The main changes included in this cycle are:
• The OSTIA (Operational Sea Surface Temperature and Sea Ice Analysis) high-resolution sea surface temperature, produced by the Met Office, and corresponding sea ice analysis (from EUMETSAT Ocea and Sea Ice SAF)
• Conserving interpolation scheme for trajectory fields in 4D-Var
• New variational bias correction (VARBC) bias predictors to allow the correction of infrared shortwave channels affected by solar effects
• Cleaner cold-start of AMSUA channel 14 bias corrections
• Changes to physics for melting of falling snow, albedo of permanent snow cover (e.g. over Antartica), diurnal variation of sea surface temperature, and linear parametrization schemes
• Convective contribution added to wind gusts in post-processing
• Monitoring of MERIS total-column water vapour data

18-03-2010