DescriptionThe extended-range forecast (also known as Monthly forecast) provide an overview of the forecast for the coming 46 days, focusing mainly on the week-to-week changes in the weather. The system is run as an extension of the ECMWF Ensemble Prediction System twice a week. It is run 51 times from slightly different initial conditions. One forecast, called the control forecast, is run from the operational ocean and atmosphere ECMWF analyses. 50 additional integrations, the perturbed members, are made from slightly different initial atmospheric and oceanic conditions, which are designed to represent the uncertainties inherent in the operational analyses. The modules will introduce the system, predictability concepts and products made available by ECMWF. Learning objectivesBy the end of the module, participants will be familiar with the sources of predictability for the extended range forecasts, the set up of the Monthly forecasting system at ECMWF and its skills, and products available on the ECMWF website. AudienceForecasters, product developer, weather providers Link to module
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