I am trying to generate spatially downscaled (5-10 arcminutes) future climate maps indicating monthly mean min and max temp, and precip. Most people usually need to extrapolate monthly data into daily data (using for eg. MarkSim). I just need the monthly. There are various ways to do this using GCM data available on the internet, but I would like to try doing it using .cli files available from the DSSAT crop modeling program. I don't know how to get access to these files though. Do I have to install DSSAT to get the files? Once I have the files, how do I convert them to a format readable by matlab or arcgis (hopefully ASCII)?

Thanks