Nine tipping points now 'active' in cascade of changes sparked by global warming, say experts
The comment states that experts have likely underestimated the risks of irreversible changes, where the planet self-amplifies warming. These now-active tipping points, in their observation, are: Arctic sea ice Greenland ice sheet Boreal forests Permafrost Atlantic Meridional Overturning Circulation Amazon rainforest Warm-water corals West Antarctic Ice Sheet Parts of East Antarctica The ongoing “cascade” of changes sparked by global warming could threaten the existence of human civilizations, as per the study, which was published in Nature on 27 November. “We must admit that we have underestimated the risks of unleashing irreversible changes, where the planet self-amplifies global warming,” Johan Rockström from the Potsdam Institute for Climate Impact Research, according to SciTechDaily. The comment’s authors have called for urgent action, specifically, a dramatic reduction in greenhouse gas emissions to avoid any more tipping points or warnings of a “hothouse”-like worst-case scenario — a less habitable planet. Instead, it assesses the tipping points “…as science advances, we must admit that we have underestimated the risks of unleashing irreversible changes, where the planet self-amplifies global warming.
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