HadCM3 (Hadley Centre Coupled Model, version 3) GCM (General Circulation Model) can freely be downloaded from the Canadian Institute for Climate Studies (CICS) web page http://www.cics.uvic.ca/scenarios/sdsm/select.cgi It is availeble for all over the globe in the from African window, American Window, Asian window and etc. Select the grid which represent your study . It composed of daily variables of NCEP1961–2000, H3A2a_1961-2099 and H3B2a_1961-2099. Twenty six types of predictor climatic variables for rainfall, maximum and minimum temperature were obtained both for HadCM3 SRES and NCEP.

Statistical Down Scaling Model (SDSM) can effectively used to down scale the above mentioned GCM output into specific weather guaging station. The manual and Software can freely be downloaded from their official website: http://co-public.lboro.ac.uk/cocwd/SDSM/