How hot does it have to get before human beings simply can’t cope with the heat and die? Well, it depends. How much extra energy is needed to raise the Earth’s temperature by a set amount? Well, it depends.
These things depend on a specific climate variable that is hard to measure, nobody’s much talking about, that makes producing those climate models much more difficult. And can make a huge difference to the impact of climate change on relatively short timescales.
And it’s creating a surprising paradox that we’re only just finding out about.
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Illustrations in this video come from ‘Essentials of Meteorology’, Ahrens & Henson
Development of the HadISDH.marine humidity climate monitoring dataset, paper describing new humidity dataset. https://essd.copernicus.org/articles/12/2853/2020/essd-12-2853-2020.html
Investigating climate change’s ‘humidity paradox’https://www.carbonbrief.org/guest-post-investigating-climate-changes-humidity-paradox
The emergence of heat and humidity too severe for human tolerancehttps://advances.sciencemag.org/content/advances/6/19/eaaw1838.full.pdf