Operational upgrades

A brief summary of all changes made to the ECMWF operational forecasting system can be found at:

• The evolution of the ECMWF analysis and forecasting system

Whenever more significant changes are made to the operational forecasting system, detailed information about those changes, relevant documentation, test data sets, e-suite runs and a tentative schedule for the implementation are made available to assist Member States and the users of our products with their migration efforts. Updates are provided as necessary and recorded in the page history.

• Implementation of Seasonal Forecast System 4
• New cluster products - 8 March 2011
• Migration to GRIB edition 2 - 18 May 2011
• Implementation of GRIB API in IFS cycle 36r2 - 22 June 2010
• Horizontal resolution increase - 26 January 2010
• Implementation of Unified VarEPS-Monthly Prediction System - 11 March 2008
• Change to Soil Hydrology Scheme for IFS cycle 32r3 - 6 November 2007
• Implementation of Seasonal Forecast System 3 - 15 March 2007
• Implementation of VarEPS - 28 November 2006
• Higher resolution model upgrade - 2 February 2006