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Swathes of Siberia freeze in temperatures below -58 Celsius (www.reuters.com)

submitted 2 years ago by throws_lemy@lemmy.nz to c/news@beehaw.org

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[–] jarfil@beehaw.org 11 points 2 years ago* (last edited 2 years ago)

Neither. This is one of the "global warming is messing up the Global Ocean Current Belt, which messes up heat transfer on a global scale, weakening and destabilizing the Polar Vortex, which starts failing to keep arctic air restricted to Canada and instead lets it do its thing down to Texas".

Higher than normal variability of temperatures, is a side effect of global warming. It may look like "meh, it's just +2C, who cares", but when you switch from "-10C to +30C" to some "-18C to +42C", in the form of heat waves followed by torrential rain followed by heat followed by frostbite, suddenly crops start dying.

Then you can extrapolate to "meh, it's not likely to go past +5C".