This video provides a good explanation of how Arctic warming directly affects our weather patterns, causing severe perturbations and extreme conditions. It then elaborates upon the dangers of global climate change resulting from unchecked greenhouse gas emissions. At issue is the fact that the Arctic is very sensitive to global heat forcing. And any small warming there can rapidly trigger a number of feedbacks that generate more warming for the Arctic and the globe. … It is important to note that, though strange and terrifying as they may be, current Arctic feedbacks and related carbon emissions are minor when compared to the changes we will unlock if we continue to release greenhouse gasses into the atmosphere. … This sizeable release would likely then last for centuries until much of the Arctic carbon store of 1,500+ gigatons locked in permafrost and untold other gigatons locked in clathrates were exhausted. Such releases would result in a mini-runaway that could lock in dangerous hothouse climate conditions for millions of years to come. Due to the extreme nature of the current situation, some damage is now unavoidable, as we probably hit at least 2-3° C warming long term even if human greenhouse gas emissions suddenly halt. But major damage can still be prevented through direct and coordinated action on the part of nations. For this reason, climate scientists are calling for an 80% or greater reduction in near term human greenhouse gas emissions. A strong direct urging from some of the best scientists in the world and one that we should take very seriously as it is becoming increasingly obvious that the Arctic is now in the process of crossing a number of extremely dangerous tipping points. robertscribbler.wordpress/2014/08/04/arctic-emergency-top-scientists-explain-how-arctic-warming-is-wrecking-our-weather-and-pushing-world-to-rapidly-cross-climate-tipping-points/
Posted on: Sun, 31 Aug 2014 04:19:23 +0000
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