Expert ice scientist Jason Box has predicted major melts and breakoffs of Manhattan-sized ice chunks from Greenland’s ice sheet, reports Chris Mooney at the Climate Desk. A few years back, he foretold the release of a “4x Manhattan” sized piece from Greenland’s Petermann Glacier. In a 2012 published study, Box further predicted “100 % melt area over the ice sheet” by 2020. In fact, the sheet’s surface almost completely melted just a month later in July—which, for Box, “signals the beginning of the end for the ice sheet.” “Those who claim it’s all cycles just don’t understand that humans are driving the cycle right now, and for the foreseeable future,” he says. Heat-absorbing soot deposits from wildfires, the darker resulting ice water, and slumping of the melting sheet into lower, warmer elevations are all accelerating the melting. A complete meltdown will create a staggering sea level rise of 23 feet. At this rate, he predicts that Shanghai, Hamburg and Philadelphia, and other cities, will be “completely inundated by 2200” — unless, we reverse global climate change, in what is now an ever-dwindling time frame for doing so.
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Why Greenland’s melting could be the biggest climate disaster of all. Glaciologist Jason Box is racing to figure out just how rapidly we’re pushing the 7 meters of sea rise level locked up in the Greenland ice sheet onto our shores. Climate Desk http://climatedesk.org/2013/01/why-greenlands-melting-could-be-the-biggest-climate-disaster-of-all/