The World Bank's Little Data Book on Climate Change contains a diverse set of indicators covering climate, exposure to impacts, resilience, greenhouse gas emissions, national-level actions and carbon markets. This supplemental dataset contains two spreadsheets: one with historical averages for the time period 1961-1990, based on gridded climatologies, and the other with projected annual averages for the years 2045-2065, relative to annual averages in the control period of 1961-2000, of ensemble data from nine general circulation models (GCMs).