Global Surface Temperature (oC) Relative to 1890-1900 mean During the last 100 years, the global mean surface temperature has increased by about 0.6o Celsius, precipitation patterns have changed spatially and temporally, and global average sea level rose by 0.1–0.2 meters (S7.ES). Figure source: http://www.metoffice.com/research/hadleycentre/CR_data/Annual/land+sst_web.txt Annual land air and sea surface temperature anomalies: GLOBE; 1861-2003 OA values, forced to zero over 1961-90. Components of the OA series include: 1861-1869 HadCRUT2OA; 1870-2004 HadCRUT2vOA Source: Hadley Centre for Climate Prediction and Research