Actual Evapotranspiration of irrigated areas in 2008
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Evapotranspiration was determined using the methodology proposed by USGS’s Simplified Surface Energy Balance.The Actual Evapotranspiratione (AET, mm) stimation was done using MODIS 1km (thermal infrared band resolution) pixel, the layer was resample to be used in further calculation. The AET was for 2008,which was dry year and hence considered a deficit period based on the annual mean precipitation data at the basin level estimated by SIWI. The irrigated areas were determined based on IWMI’s irrigated and rainfed area mapping procedures. This layer was one of the layers produced for “Supporting Coordination and Cooperation in Water Management in the Euphrates and Tigris Area CPET” project. The project aims to assess the status of water use in agriculture in the Euphrates-Tigress basin, determine and map the agricultural water productivity and identify options for improving it in problem areas of the basin in Turkey, Syria and Iraq.