Plummeting September Temperatures In The US

September used to be a hot month in the US, but September afternoon temperatures plummeted about 60 years ago, and never recovered. The hottest Septembers occurred during the 1920s and 1930s, when atmospheric CO2 was below 310 PPM.

 

via The Deplorable Climate Science Blog

https://ift.tt/2PjEYe2

October 7, 2018 at 07:09AM

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