From: Click Green Staff, ClickGreen, More from this Affiliate
Published March 19, 2012 03:44 PM

History of climate change re-written with release of Russian data

The history of a changing climate has been officially re-written following the release of new data from Russia and bases within the Arctic Circle. Scientists have now calculated that 2010 has overtaken 1998 to now be the warmest year on record, followed in second place by 2005 as 1998 is pushed into third place. The recalculation of the annual global mean temperature records follows the release of weather data from more than 600 locations around the Arctic Circle.


The dataset is compiled by the Met Office and the University of East Anglia's Climatic Research Unit, who today announced the update.

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 the newly available data, which now contains information from the All Russian Research Institute adding more records from the sparsely observed northern higher latitude region.

Differences in the way sea surface temperature observations have been collected have been taken account of and the new version also provides much more detail on uncertainty.

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