The two squares represent relative levels of nitrogen and oxygen as white (nearly 80%); average water vapour as darker blue (2%); peak water vapour as pale blue (another 2%); and CO2 levels as black (pre-industrial levels about 300 ppm; current levels about 400 ppm; or 0.03% and 0.04%).
The upper square shows represents pre-industrial levels (three blocks) and the lower square represents current levels (four blocks).
Scary stuff, huh?
Tuesday, 25 June 2019
How to visualise the dangerous increase in CO2 levels since pre-industrial times
My latest blogpost: How to visualise the dangerous increase in CO2 levels since pre-industrial timesTweet this! Posted by Mark Wadsworth at 22:31
Labels: climate change, Science
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4 comments:
OMG...........CO2 is still a trace gas. It was a trace gas as stated in my O level chemistry text book in 1969. 370 ppm if memory serves.
DrE, indeed. But I did this mainly for the fun of putting it on twitter to wind up the Alarmists.
I don't twitter; did it work?
SM, one Alarmist saw the word "dangerous" and retweeted it. I got a dozen comments from Alarmists telling me off, then it fizzled out
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