GeologyResearchScience

Greenland’s Rapid Melting Ice with Pouring Rain Speeding Sea Level Rise

Greenland's ice
Greenland's ice

Rising worldwide temperatures are making Greenland feel more like the United Kingdom—and that is terrible news for the ice sheet that covers the gigantic cold island. Rain is ending up increasingly frequent, melting ice and setting the phase for unmistakably more melt on, as per another investigation. Considerably all the more exasperating, scientists state, is that raindrops are blemishing zones of the ice sheet even in the dead of winter and that as the atmosphere warms, those territories will extend.

“This is the thing that environmental change resembles, it’s the ‘Atlantification’ of the Arctic,” says climate researcher Ruth Mottram of the Danish Meteorological Institute in Copenhagen, who was not associated with the research. “This paper recognizes an extremely imperative system and we have to make sense of how it plays into our expectations of ocean level ascent.”

Every year, the hot knife of environmental change extracts 270 billion tons of ice from Greenland’s more than 1.7-million-square-kilometer ice sheet. Somewhere in the range of 1992 and 2011, all that lost ice raised worldwide ocean level generally 7.5 millimeters. Generally 50% of the ice loss in that period happened at the ice sheet’s edge as chunks of ice dividing from ice sheets and roaring into the ocean. In any case, as of late, satellite checking has uncovered that 70% of Greenland’s contribution to ocean level ascent has originated from meltwater, not ice.

Since melting on the outside of the ice sheet came to rule in 2011, Greenland’s yearly contribution to worldwide ocean level ascent has multiplied. Warming has driven this speeding up and, in the course of recent years or something like that, normal air temperatures at the ice sheet warmed by as much as 1.8°C in summer, and up to 3°C in winter.

Reference:

ltmanns, M., Straneo, F., and Tedesco, M.: Increased Greenland melt triggered by large-scale, year-round cyclonic moisture intrusions, The Cryosphere, 13, 815-825, https://doi.org/10.5194/tc-13-815-2019, 2019.

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