From the website:
HadCRUT3 is a gridded dataset of global historical surface temperature anomalies. Data are available for each month since January 1850, on a 5 degree grid. The dataset is a collaborative product of the Met Office Hadley Centre and the Climatic Research Unit at the University of East Anglia.
Also available from University of East Anglia's Climatic Research Unit (CRU) at:
UK Met Office - HadCRUT3 dataset. No author.
Retrieved 02:31, May 23, 2013 (UTC).
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