----------------------------Original message---------------------------- I suggest you look at the the Leemans and Cramer 30 year global temp and precip data sets. They are not of high resolution (1/2 degree for the world--720 columns by 360 rows), but they are in raster and easily accessiible from National Geophysical Data Center. The source citation briefly is, Leemas, R., and W.P. Cramer. 1991. The IIASA Database for Mean Monthly Values of Temperature, Precipitation, and Cloudiness on a Global Terrestrial Grid. Laxenburg, Austria: IIASA. My NGDC contact number for this and other datasets is 303-497-6900. Peter Schlesinger Woods Hole Research Center [log in to unmask]