Iceland misplaced 750 sq km of glaciers over the past 20 years on account of international warming- Know-how Information, Alenz
Agence France-PresseJun 01, 2021 10:05:24 IST
Iceland’s glaciers have misplaced round 750 sq. kilometres (290 sq. miles), or seven % of their floor, for the reason that flip of the millennium on account of international warming, a examine printed on Monday confirmed. The glaciers, which cowl greater than 10 % of the nation’s land mass, shrank in 2019 to 10,400 sq. kilometres, the examine within the Icelandic scientific journal Jokull mentioned. Since 1890, the land lined by glaciers has decreased by virtually 2,200 sq. kilometres or 18 %.
However virtually a 3rd of this decline has occurred since 2000, based on the latest calculations by glaciologists, geologists and geophysicists.
Specialists have beforehand warned that Iceland’s glaciers are vulnerable to disappearing fully by 2200.
The ice’s retreat over the previous 20 years is nearly equal to the whole floor space of Hofsjokull, Iceland’s third-biggest ice cap at 810 sq. kilometres.
“Glacier-area variations in Iceland since round 1890 present a transparent response to variations in local weather,” the authors of the examine wrote.
“They’ve been quite synchronous over the nation, though surges and subglacial volcanic exercise affect the place of some glacier margins,” they added.
In 2014, glaciologists stripped the Okjokull glacier of its standing as a glacier, a primary for Iceland, after figuring out that it was made up of useless ice and was now not shifting as glaciers do.
Almost the entire world’s 220,000 glaciers are dropping mass at an ever growing tempo, contributing to greater than a fifth of world sea degree rise this century, based on a examine printed in Nature in April.
Analysing photos taken by NASA’s Terra satellite tv for pc, they discovered that between 2000-2019, the world’s glaciers misplaced a mean of 267 billion tonnes of ice every year.
The workforce additionally discovered that the speed of glacier soften had accelerated sharply throughout the identical interval.
Between 2000 and 2004, glaciers misplaced 227 billion tonnes of ice per 12 months. However between 2015-2019, they misplaced a mean of 298 billion tonnes every year.
The findings can be included in a forthcoming evaluation report from the United Nations’ Intergovernmental Panel on Local weather Change due in 2022.
#Iceland #misplaced #glaciers #a long time #due #international #warming #Know-how #Information #Alenz