Verification statistics and evaluations of ECMWF forecasts in 2006-2007.

TitleVerification statistics and evaluations of ECMWF forecasts in 2006-2007.
Publication TypeMiscellaneous
Year of Publication2008
AuthorsRichardson, DS, Ferranti, L, Ghelli, A, van der Grijn, G, Leutbecher, M, Vitart, F, Zsoter, E
Secondary TitleTechnical Memorandum

This document presents recent verification statistics and evaluations of ECMWF forecasts. Recent changes to the data assimilation/forecasting and post-processing system are summarised in Section 2. Verification results of the medium-range free atmosphere ECMWF forecasts are presented in Section 3, including, when available, a comparison of ECMWF forecast performance with that of other global forecasting centres. Section 4 deals with the verification of ECMWF forecasts of weather parameters and ocean waves, while severe weather events are addressed in Section 5. Finally, Section 6 provides insights into the performance of monthly and seasonal forecast systems. A short technical note describing the scores used in this report is given in Annex A.