[From a toot by Ed Hawkins]
85 years ago.
In April 1938, Guy Callendar published his seminal paper showing that Earth’s land areas had warmed over the previous 50 years.
He also suggested that man-made CO₂ emissions had caused around half of the observed warming.
85 years ago.
https://rmets.onlinelibrary.wiley.com/
The theory that increasing greenhouse gas levels in the atmosphere would cause warming was developed earlier by Fourier, Foote, Tyndall, Arrhenius & others.
Their work enabled Callendar to join the pieces together and demonstrate a human-caused increase in both CO2 & global land temperatures and, importantly, link these together.
The work of Plass, Keeling, Revelle, Manabe & others would subsequently solidify these ideas.
Climate science has a long history we should use to communicate more.
Well he wasn't the first: a woman called Eunice Foote proved in 1856 that CO2 trapped more heat than air, and maintained it longer. Then there was Fourier, a French polymath genius. And Arrhenius, a Swedish scientist. Science has been clear about global warming for 170 years.
And still we do too little to avert catastrophe. Politicians, owned by fossil fuel companies. Other companies pretending to care, but just greenwashing. Right-wing idiots, too stupid to realise they've been had. And hoi polloi, hoping that somebody else will solve the problem.
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