The Fake Post-1970 US Temperature Spike

USHCN raw temperature data shows a sharp rise in temperatures after 1970.

I did some analysis on this, and discovered that since 1970, NOAA has been losing December data much faster than they have been losing July data.  This causes post-1970 temperatures to be skewed upwards.

Spreadsheet

If I plotonly stations with complete records for the year, the post-1970 peak gets reduced.

via The Deplorable Climate Science Blog

http://bit.ly/2SFSNcE

February 17, 2019 at 12:07PM

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