Dr Benny Peiser and Dr David Whitehouse, of the Global Warming Policy Foundation (GWPF), have written to John Hirst, chief executive of the beleaguered Met Office, asking for an explanation of a press release issued by his organisation on January 20 and headed “2010 – a near record year”. This won headlines by claiming that last year was hotter than any other in the past decade. When the two men examined the original data from which this claim was derived – compiled by the University of East Anglia’s Climatic Research Unit and the Met Office’s Hadley Centre – it clearly showed 2010 as having been cooler than 2005 (and 1998) and equal to 2003. It emerged that, for the purposes of the press release, the data had been significantly adjusted. Comparing the actual data for each year, from 2001 to 2010, with that given in the press release shows that for four years the original figure has been adjusted downwards. Only for 2010 was the data revised upwards, by the largest adjustment of all, allowing the Met Office to claim that 2010 was the hottest year of the decade.