Observed global annual average temperature deviations in the period 1850–2009 (in ºC)

Figure Created 12 Nov 2009 Published 09 Aug 2010 Last modified 29 Nov 2012
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This is an old version, kept for reference only.

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The annual deviations shown in the chart have been adjusted to be relative to the period 1850-1899 (for Hadley Centre/CRU) and 1880-1899 (for NASA/GISS) to better monitor the EU objective not to exceed 2 ºC above pre-industrial values. Over Europe average annual temperatures during the real pre-industrial period (1750-1799) were very similar to those during 1850-1899.


Additional information

The lines refer to 10-year moving average, the bars to the annual 'land and ocean' global average.

Geographical coverage note: World