The CRU Global Climate Dataset available through the IPCC DDC consists of a multi-variate 0.5º latitude by 0.5º longitude resolution mean monthly climatology for global land areas, excluding Antarctica, strictly constrained to the period 1961-1990, together with monthly time series at the same resolution for the period 1901-1995. Precipitation is the annual average (within 1961-90) of water falling on the country.