Mmastodon EnvironmentClimate first seen 4 d ago, last 4 d ago, peak #8
Stratosphere cooling is the fingerprint of greenhouse warming
Original: No, the whole sky is not warming: high up it is getting colder, and that is the giveaway. Near the ground: warming. 25 t
Scientists and commentators are highlighting that while the air near the ground has warmed since the 1980s, the stratosphere, roughly 25 to 50 kilometres up, has been cooling. This vertical split was predicted in 1967 as a consequence of rising greenhouse gases, which trap heat low in the atmosphere while allowing less to reach higher layers. The point is being shared as a simple way to counter claims that warming is natural, since a warming sun would heat all layers of the sky.
Why now: The contrast between surface warming and stratospheric cooling is being cited as clear evidence that human-caused greenhouse gases, not the sun, drive climate change.
stratosphereclimate changegreenhouse gases
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Evidence
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