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Spy satellite images reveal Himalayan glaciers are shrinking fast

Himalayan glaciers are actually melting two times as rapid as they have been earlier than the flip of the century, Chilly Battle-era secret agent satellite tv for pc photographs have published.

The melting of ice within the Asian mountain vary, which incorporates Mount Everest, has doubled all over the closing 40 years, in step with a brand new find out about by way of scientists.

The staff, from Columbia College’s Earth Institute, when compared US secret agent satellite tv for pc photographs from the mid-1970s with fashionable satellite tv for pc information.

Changri Nup Glacier, one of the hundreds studied by the researchers. Pic: Joshua Maurer
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Changri Nup Glacier, one of the most loads studied by way of the researchers. %: Joshua Maurer

They tested 650 glaciers spanning 2000km (1,243 miles) throughout India, China, Nepal and Bhutan.

Research confirmed glaciers were shrinking by way of nearly part a metre every yr since 2000 – two times the volume misplaced annually between 1975 to 2000.

Greater than 1 / 4 of the ice that was once found in 1975 has vanished all over the closing 4 a long time.

“That is the clearest image but of the way rapid Himalayan glaciers are melting over this time period, and why,” mentioned lead creator Joshua Maurer, from Columbia College’s Lamont-Doherty Earth Observatory in New York.

Contemporary once a year losses have averaged about eight billion tonnes of water – the identical of three.2 million Olympic-size swimming swimming pools, he mentioned.

Regardless that temperatures range from position to position, moderate temperatures have been one level Celsius (1.8F) upper between 2000 to 2016 than they have been between 1975 and 2000.

In addition to emerging temperatures, different reasons incorporated decreased rainfall and the burning of fossil fuels as soot touchdown within the area absorbs daylight and accelerates melting.

“It displays how endangered [the Himalayas] are if local weather exchange continues on the similar tempo within the coming a long time,” mentioned Etienne Berthier, a glaciologist at France’s Laboratory for Research in Geophysics and Spatial Oceanography, who was once now not concerned within the find out about.

The find out about has been printed within the magazine Science Advances.

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