the Melting of glaciers the sea level in the least, on average, to almost a Millimeter in the year. According to the new estimates, as you will lose a year 335 billion tons of ice. This is the conclusion of researchers from Zurich, who analyzed satellite measurements and field observations. Thus, the Eisverlust for all of the mountain could be estimated regions back in the 1960s, writes the Team led by Michael Zemp from University of Zurich in the journal “Nature”. The data showed that the annual loss of glacier mass have increased worldwide in the past 30 years.
loss is greater than previously thought
“Worldwide, we are losing at present, around three Times the remaining glacier volume in the European Alps. And every year,” says Glaciologist Zemp. The glaciers contribute according to his information, currently, 25 to 30 percent to the global sea level rise. Another cause is that the sea water due to the warming of the oceans volume.
Overall, glaciers worldwide, approximately a volume of 170,000 cubic-kilometers, excluding Greenland and Antarctica. For methodological reasons, it has been difficult, however, to determine their share of the rising sea level.
Regional share of glaciers on sea-level rise from 1961 to 2016. The cumulative regional and global…source: Zemp et al. 2019, in Nature
The satellites, whose data the researchers used now, measure the earth’s surface digitally, and provide information on the thickness of the ice at different points in time. Thus, it was possible to reconstruct the changes made to worldwide, more than 19,000 glaciers, the authors write. The glacier would have to lose between 1961 and 2016, more than 9000 billion tons of ice. This corresponds to a global mean rise in sea level of 27 millimeters. Alone in the years 2006 to 2016, an average of almost a Millimeter per year. The authors write that this study also includes statistical uncertainties, to infer, however, that the loss of glacial ice on the Basis of the data could be significantly larger than previously assumed.
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Some of the mountain ranges until the year 2100, gletscherlos
contributed the most to the glacier in Alaska, followed by those in Patagonia in southern Chile and Argentina and in the Arctic glacier regions around the North pole. The researchers conclude that in some of the mountain, the glacier chains could be gone by the year 2100, almost, approximately, in the Caucasus, Central Europe, Western Canada, the USA and new Zealand. Regions with more glaciers would melt over the end of the century, and thus to sea-level rise. (fsch/dpa)
