The CSIRO Dawn-2100 archive contains datasets for atmospheric, land and oceanographic variables for the approximate period 1850 - 2100 (dependent on model). These have been created through the concatenation of 20th century (20C3M) and other scenario (currently SRESA1B or SRESA2) data from a number of the 25 differant global climate models (GCM) from various countries. The SRESA2_cal_evap dataset in particular contains the Morton variables Lake evaporation (EVAP), Areal actual evapotranspiration (AVAP), Point potential evapotranspiration (PVAP) and Areal potential evapotranspiration (WVAP) (which have been calculated from GCM outputs of air temperature, (calculated) relative humidity, solar radiation, annual rainfall average for 1975-2004 and monthly constants of a and b to calculate sunshine ratio) under the SRESA2 scenario emissions from 2001 to 2100 . These variables have also been further analysed to give monthly, seasonal and annual trend data, calculated from a monthly timeseries referenced to the area-weighted mean global warming values. 8 GCM models are available with data for variables being in 12 month, annual and 4 seasons(DJF, MAM,JJA,SON) format with 80 files totaling 12.5 GB as Netcdf files. Available for internal use and analysis by CSIRO staff on the HPSC cherax.