Charles Desportes, Marie Drévillon, Charly Régnier
(MERCATOR OCEAN/Production Dep./Products Quality)

Eric Greiner (CLS), Nicolas Ferry, Jean-Michel Lellouche, Olivier Le Galloudec, Bruno Levier (MERCATOR OCEAN/Production Dep./R&D)

Eric Greiner, Mounir Benkiran, Nathalie Verbrugge, Hélène Etienne (CLS), Fabrice Hernandez, Laurence Crosnier (MERCATOR OCEAN), Nicolas Ferry, Gilles Garric , Jean-Michel Lellouche (MERCATOR OCEAN), Jean-Marc Molines (CNRS), Sébastien Theeten (Ifremer), the DRAKKAR and NEMO groups, Nicolas Pene (ex-AKKA), Silvana Buarque (Météo-France), the BCG group (Météo-France, CERFACS)

Information on input data:
Christine Boone, Stéphanie Guinehut, Gaël Nicolas (CLS/ARMOR team)

This bulletin gives an estimate of the accuracy of MERCATOR OCEAN’s analyses and forecast for the season of January-February-March 2011. It also provides a summary of useful information on the context of the production for this period. Diagnostics will be displayed for the global 1/12° (PSY4), global ¼° (PSY3) and the Atlantic and Mediterranean zoom at 1/12° (PSY2) monitoring and forecasting systems currently producing daily 3D temperature salinity and current products. In this fourth issue, we present a short validation study in the North West Pacific near Japan in the context of the catastrophe of March 2011. Finally we introduce the Mercator Ocean global ¼° reanalysis GLORYS2V1 products currently available via MyOcean V1 for the 1993- 2009 period, and more specifically the quality control of in situ profiles based on GLORYS2V1 innovations.