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January 18, 1964 – Nature mentions atmospheric carbon dioxide build-up

Sixty years ago, on this day, January 18th, 1964, Nature published an article about the British Association for the Advancement of Science (BAAS) meeting in September 1963, at which Peter Ritchie-Calder (yes, him again!) had spoken about CO2 build-up,

 “Discharge of combustion products into the atmosphere had increased its content of carbon dioxide by 10 per cent in a century. The ‘green house effect’ could be expected to increase average mean temperature by 3·6° C in the next 4Q-50 years. This would radically affect the extent of glaciers and ice-caps with resultant rise in sea- and river-levels and increasing precipitation. 

The amount of carbon dioxide in the air was roughly 319ppm. As of 2024 it is 422ppm, but check here for daily measures. 

The context was that by 1963 people like Ritchie Calder were speaking publicly about CO2 buildup. It was no secret among the scientific elite in the United Kingdom. And well. You know, Nature was covering it. This is probably before John Maddox came along as editor.

What we learn is that there’s an entire history of admissions about CO2 build up. It’s not a secret, it’s not considered outlandish. It’s just one of those things. This is also two years after Mariner had gone to Venus and captured a lot of information. 

What happened next? It would be 1967 before the CO2 issue really received a boost with the BBC programme Challenge and so forth. 

What do you think? Does this pass the ‘so what?’ threshold? Have I got facts wrong? Interpretation wrong? Please do comment on this post, unless you are a denialist, obvs.

Also on this day: 

January 18, 1993 – Australian unions and greenies launch first “Green Jobs” campaign

January 18, 1993 – Job’s not a good un. “Green Jobs in Industry Plan” achieves … nothing. #auspol

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