title: How We’re Being Tricked: Fiddling With Temperature Data The Biggest Scam Ever
text: Amen to this! Billions of your tax dollars have been redistributed in the name of global warming.  When future generations look back on the global-warming scare of the past 30 years, nothing will shock them more than the extent to which the official temperature records   on which the entire panic ultimately rested   were systematically  adjusted  to show the Earth as having warmed much more than the actual data justified. Two weeks ago, under the headline  How we are being tricked by flawed data on global warming , I wrote about Paul Homewood, who, on his Notalotofpeopleknowthat blog, had checked the published temperature graphs for three weather stations in Paraguay against the temperatures that had originally been recorded. In each instance, the actual trend of 60 years of data had been dramatically reversed, so that a cooling trend was changed to one that showed a marked warming. This was only the latest of many examples of a practice long recognised by expert observers around the world   one that raises an ever larger question mark over the entire official surface-temperature record.Watch: Climate change explained in 60 second animation:  Following my last article, Homewood checked a swathe of other South American weather stations around the original three. In each case he found the same suspicious one-way  adjustments . First these were made by the US government s Global Historical Climate Network (GHCN). They were then amplified by two of the main official surface records, the Goddard Institute for Space Studies (Giss) and the National Climate Data Center (NCDC), which use the warming trends to estimate temperatures across the vast regions of the Earth where no measurements are taken. Yet these are the very records on which scientists and politicians rely for their belief in  global warming .President Barack Obama will use the report as evidence for action as he tries to move ahead with policies on climate change before leaving office in 2017Homewood has now turned his attention to the weather stations across much of the Arctic, between Canada (51 degrees W) and the heart of Siberia (87 degrees E). Again, in nearly every case, the same one-way adjustments have been made, to show warming up to 1 degree C or more higher than was indicated by the data that was actually recorded. This has surprised no one more than Traust Jonsson, who was long in charge of climate research for the Iceland met office (and with whom Homewood has been in touch). Jonsson was amazed to see how the new version completely  disappears  Iceland s  sea ice years  around 1970, when a period of extreme cooling almost devastated his country s economy. One of the first examples of these  adjustments  was exposed in 2007 by the statistician Steve McIntyre, when he discovered a paper published in 1987 by James Hansen, the scientist (later turned fanatical climate activist) who for many years ran Giss. Hansen s original graph showed temperatures in the Arctic as having been much higher around 1940 than at any time since. But as Homewood reveals in his blog post,  Temperature adjustments transform Arctic history , Giss has turned this upside down. Arctic temperatures from that time have been lowered so much that that they are now dwarfed by those of the past 20 years.Read more: The Telegraph