HadCRUT

An update of HadCRUT, the global temperature dataset compiled by the UK Met Office’s Hadley Centre and the University of East Anglia's Climatic Research Unit, has resulted in 2010 rather than 1988 being listed as the hottest year on record. Compiled from temperature observations obtained over land and sea, HadCRUT is used as a basis for a global temperature record going back to 1850. The latest version of the dataset, called HadCRUT4, includes newly available data; notably adding much more information from the sparsely observed higher northern latitudes.