![Earth system diagram Earth system diagram](/sites/default/files/styles/900x/public/our-earth-system-690px_15.jpg?itok=Y7X-PERW)
Global numerical modelling at the heart of ECMWF’s forecasts
Our global numerical model has evolved from atmosphere only to encompass the Earth system as a whole. This Earth system approach underpins all our forecasts and it has opened up the development of a range of environmental services.