Something to remember as you look at this one, 30 degC in sub arctic locations(!), is that it’s not possible for climate change modelling to acquire sensible data or perform analysis about tipping point effects. So they’re completely ignored. Such events have started, even covered by mainstream media, methane bubbling up from clathrates in Arctic Sea, also from tundra wetland around Arctic. The Arctic is warming more than most, with dark ocean displacing ice and absorbing more heat again. The worry is that this effect can multiply, out of control, like chain reaction in nuclear blast. For those of us who have doubted some claims about sea level rise of 20 metres and more, this is where it can come from, suddenly!
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