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Description
This image shows the instrumental record of global average temperatures as compiled by the Climatic Research Unit of the University of East Anglia and the Hadley Centre of the UK Meteorological Office. Data set HadCRUT3 was used. HadCRUT3 is a record of surface temperatures collected from land and ocean-based stations. The most recent documentation for this data set is Brohan, P., J.J. Kennedy, I. Haris, S.F.B. Tett and P.D. Jones (2006). "Uncertainty estimates in regional and global observed temperature changes: a new dataset from 1850". J. Geophysical Research111: D12106. DOI:10.1029/2005JD006548. Following the common practice of the IPCC, the zero on this figure is the mean temperature from 1961-1990.
This image has been released into the public domain by its author, Jak. This applies worldwide.
In some countries this may not be legally possible; if so: Jak grants anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.