Temperature Adjustments In Alabama

By Paul Homewood

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https://notalotofpeopleknowthat.wordpress.com/2012/06/08/ncdc-cooling-the-past-again/

I came across an old post of mine from June 2012, which casts some light on how much the US temperature record has been adjusted by NOAA.

The graph plots November temperatures in Alabama. Like all of this old data, this graph is no longer available on NOAA’s website.

As I noted at the time, November temperatures in 1934 were 57.0F, and compared with 55.5F in 2011. 

If we fast forward to the current version, we find that November 1934 is shown as 55.8F, and November 2011 as 55.3F. In net terms, relative to 2011, the 1934 temperatures have been reduced by 1.0F.

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https://www.ncdc.noaa.gov/cag/time-series/us/1/0/tavg/1/11/1895-2017?base_prd=true&firstbaseyear=1901&lastbaseyear=2000&trend=true&trend_base=100&firsttrendyear=1895&lasttrendyear=2013

As I also reported in a later post in 2014, NOAA offered a toolkit that graphed the differences between the old and new versions.

Below is a screenprint of the annual data for Alabama, which I posted at the time, and it shows just how much temperatures have been reduced during that highly inconvenient warm period in the 1930s and 40s.

As with the November figure, there is an adjustment of about 1F.

25_nebraska00_precipitation_thumb

https://notalotofpeopleknowthat.wordpress.com/2014/03/27/ncdc-introduce-more-temperature-adjustmentsand-guess-which-way-they-go/

Now, and also highly conveniently, the NOAA toolkit does not work. All you get is a blank screen.

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https://www.ncdc.noaa.gov/temp-and-precip/divisional-comparison/

Ref.: https://notalotofpeopleknowthat.wordpress.com/2018/01/16/temperature-adjustments-in-alabama-3/

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