Canada has 1,400 weather stations reporting temperature. Nasa only uses readings from thirty-five stations-all in warmer areas-down from 600 in the 1970s.
"Using the agency's own figures, Smith shows that in 1991, almost a quarter of NOAA's Canadian temperature data came from stations in the high Arctic. The same region contributes only 3% of the Canadian data today. Mr. D'Aleo and Mr. Smith say NOAA and GISS also ignore data from numerous weather stations in other parts of the world, including Russia, the U.S. and China. They say NOAA collects no temperature data at all from Bolivia -- a high-altitude, landlocked country -- but instead "interpolates" or assigns temperature values for that country based on data from "nearby" temperature stations located at lower elevations in Peru, or in the Amazon basin. The result, they say, is a warmer-than-truthful global temperature record. "NOAA . . . systematically eliminated 75% of the world's stations with a clear bias towards removing higher latitude, high altitude and rural locations, all of which had a tendency to be cooler," the authors say. "The thermometers in a sense, marched towards the tropics, the sea, and to airport tarmacs." The NOAA database forms the basis of the influential climate modelling work, and the dire, periodic warnings on climate change, issued by James Hanson, the director of the GISS in New York."
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