Observed global and European annual average temperature deviations, 1850-2007
The global mean annual temperature deviations are in the source in relation to the base period 1961-1990. The annual deviations shown in the chart have been adjusted to be relative to the period 1850-1899 to better monitor the EU objective not to exceed 2 oC above preindustrial values. Over Europe average annual temperatures during the real preindustrial period (1750-1799) were very similar to those during 1850-1899.
Geographical coverage note: Left: Global. Right: Europe