By Paul Homewood
Steve Goddard ran another post yesterday showing how NOAA temperature adjustments have added to warming in the US. So I thought I would take a more detailed look at one state, Oklahoma, to highlight how this works in practice.
According to the official NOAA data, last year was the hottest on record in Oklahoma, with a mean of 63.1F. In comparison, 1934 was only fourth warmest at 61.9F, more than a degree cooler.
This immediately set the alarm bells ringing, because the official state temperature for 1934, as published at the time, was 63.0F. Somewhere along the line, the past had been cooled by 1.1F.
Now, of course, it may be that the mix of stations has changed over the years, (although it is stretching the imagination to believe that the adjustments nearly always go in the same direction, as they…
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