When CO2 was below 350 PPM, 100ºF temperatures in Iowa were very common. Now they are quite rare – with only three recorded this summer at all long term HCN stations. Ninety-six percent of all 100ºF readings occurred when CO2 was below 350 PPM.
In 1936, Iowa recorded 466 100ºF temperature readings.
Index of /pub/data/ghcn/daily/hcn/
NOAA and NASA have erased the 1930s heat from their published temperature graphs. I hope they are getting paid well to destroy American history.
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