Average potential evaporation (FAO) in the summer half year 2021-2050 (projection) (WMS service)

The map shows the projection of potential evaporation in the summer half year (01 April — 30 September) for the 30-year period 2021-2050 in mm/so. The potential evaporation was calculated on the basis of climate projection data according to the methodology of FAO grass reference evaporation. The basis for climate data is the assumption of the IPPC’s “further-how-as-to-date” scenario RCP8.5 from the Fifth Assessment Report (AR5). This is a scenario that describes a continuous increase in global greenhouse gas emissions, resulting in an additional radiative propulsion of 8.5 watts per m² compared to pre-industrial levels by the end of the 21st century. For scenario RCP8.5, a variety of climate projections are available, resulting from different combinations of global and regional climate models (or regionalisation methods). From a maximum available total ensemble of 37 climate projections, a reduced ensemble with 10 climate projections was created at the LBEG using a selection method of the DWD. The particularly relevant climate model data (temperature and precipitation) were subjected to monthly BIAS adjustment (through linear scaling). The periods 1971-2000 are considered as reference time, 2021-2050 as near future and 2071-2100 as a distant future. Shown are the average value of the ensemble considered and the maximum and minimum value of the bandwidth. The resolution of the data grid is 12.25 km * 12.25 km.