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This is a great explanation by @queenofpeat on why permafrost is one of the bigger wildcards in the climate system.
The Arctic is home to many of the climate system’s most important self-amplifying or vicious cycles, from permafrost to sea ice. But one we don’t often think about, but which could be the most dangerous of all, is ... doi.org/10.1088/1748-9…
And what happens in the Arctic doesn’t stay in the Arctic; as @MichaelEMann explains here, it affects the jet stream which in turn affects the intensity and duration of many of our weather systems, from heat waves to floods.
When it comes to climate change, the Arctic matters a whole lot. This Global Weirding episode explains:
