Mean temperature increased by 0.7°C compared to mean from 1951 to 1980

According to NASA global warming is not a myth. The provided data shows rapid increase in mean annual temperature across the last two decades compared to the benchmark — mean temperature from 1951 to 1980.

Data source: GISS Surface Temperature Analysis (GISTEMP). Dataset accessed 2015-08-01.

More info about the study: Hansen, J., R. Ruedy, M. Sato, and K. Lo, 2010: Global surface temperature change, Rev. Geophys., 48


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