GFS precipitation with evaporation

The latest weather trends in the Nord Pool area has demonstrated the need to incorporate evaporation in the precipitation energy modelling. Evaporation is a feature we have supported from the outset with EC models. However, the GFS weather model does not support stock evaporation variables directly. Working with our colleagues in SMHI, our analysts has found an ingenious method of calculating the evaporation from the GFS output. Besides, providing a richer model, including evaporation in the GFS forecasts also makes the GFS and EC forecasts directly comparable.