Global warming advocates may have a scientific scandal on their hands that is even more serious than those leaked e-mails:
The global warming scandal keeps getting worse. Revelations over the few weeks show that many important assertions in the UN’s Intergovernmental Panel on Climate Change were based on misquotes and false claims from environmental groups, not on published academic research as it was originally presented. This is on top of the recent mess regarding data, where the three most relied-on data series used by the United Nation’s Intergovernmental Panel on Climate Change 2007 assessment report still have not been released. Other data simply never seem to have existed or cannot be provided to other scientists.
But probably the most damaging report has come from Joseph D’Aleo, the first Director of Meteorology and co-founder of the Weather Channel, and Anthony Watts, a meteorologist and founder of SurfaceStations.org.
In a January 29 report, they find that starting in 1990, the National Oceanic and Atmospheric Administration (NOAA) began systematically eliminating climate measuring stations in cooler locations around the world. Yes, that’s right. They began eliminating stations that tended to record cooler temperatures and drove up the average measured temperature. The eliminated stations had been in higher latitudes and altitudes, inland areas away from the sea, as well as more rural locations. The drop in the number of weather stations was dramatic, declining from more than 6,000 stations to fewer than 1,500.
D’Aleo and Watts show that the jumps in measured global temperature occur just when the number of weather stations is cut. But there is another bias that this change to more urban stations also exacerbates. Recorded temperatures in more urban areas rise over time simply because more densely populated areas produce more heat. Combining the greater share of weather stations in more urban areas over time with this urban heat effect also tends to increase the rate that recorded temperatures tend to rise over time.
Their report provides examples of how the systematic elimination of stations and unexplained adjustments in temperature data caused measured temperatures to rise for Australia, New Zealand, Canada, Norway, Sweden, and the United States. Many adjustments change what would have been a drop in temperatures into an increase.
via The Next Climate-gate?.
To download the paper, go here.
HT: Paul
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