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.