The ECMWF operational analysis and forecasting system

The comprehensive earth-system model developed at ECMWF forms the basis for all the data assimilation and forecasting activities. All the main applications required are available through one integrated computer software system (a set of computer programs written in Fortran) called the Integrated Forecast System or IFS.

This section shows the full evolution of the ECMWF analysis and forecasting system.

• The full evolution