Richard A Muller, Jonathan Wurtele, Robert Rohde, Robert Jacobsen, Saul Perlmutter, Arthur Rosenfeld, Judith Curry, Donald Groom, Charlotte Wickham and Steven Mosher
Earth Atmospheric Land Surface Temperature and Station Quality in the Contiguous United States
A survey organized by A. Watts has thrown doubt on the usefulness of historic thermometer data in analyzing the record of global warming. That survey found that 70% of the USHCN temperature stations had potential temperature biases from 2°C to 5°C, large compared to the estimated global warming (1956 to 2005) of 0.64 ± 0.13°C. In the current paper we study this issue with two approaches. The first is a simple histogram study of temperature trends in groupings of stations based on Watt’s survey of station quality.
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