Global mean surface temperature - 1956-2012

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Global annual mean surface temperature change

10 year

average

2003-2012

°C

Reference period (0°C): 1951 - 1980

Data: NASA GISS, http://data.giss.nasa.gov/gistemp/graphs_v3 , method in Hansen et al. PNAS 2006. 

Graphic: UCL