Climate Change

Russia’s permafrost is melting and it could have a devastating global effect

A man walks through a tunnel formed from  crystals of permafrost outside the village of Tomtor in the Oymyakon valley in northeast Russia, January 28, 2013. The coldest temperatures in the northern hemisphere since the beginning of the 20th century have been recorded in the Oymyakon valley, known as the 'Pole of Cold', where according to the United Kingdom Met Office a temperature of -67.8 degrees Celsius (-90 degrees Fahrenheit) was registered in 1933.     REUTERS/Maxim Shemetov (RUSSIA - Tags: SOCIETY ENVIRONMENT) - LM2E92F1AO201

Melting permafrost could amplify climate change. Image: REUTERS/Maxim Shemetov.

Emma Charlton
Senior Writer, Forum Agenda
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Climate Change

An environmental vicious circle is taking hold in Russia and other parts of the Arctic as permafrost – the frozen ground beneath a quarter of the Northern Hemisphere and almost 20% of Earth’s landmass – thaws.

Rising temperatures are causing the ice that binds soil, rocks and sand in the ground to disintegrate, setting in motion a process that releases greenhouse gases.

Image: Nature

Greenhouse gases heat the Earth by absorbing energy and slowing the rate at which it escapes into space – in effect they form a blanket over the Earth.

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“Permafrost warming has the potential to amplify global climate change,” scientist Dr Boris K Biskaborn of the Alfred Wegener Institute, a polar and marine research organization, writes in an article published in the journal Nature. “When frozen sediments thaw it unlocks soil organic carbon.”

A deer-keeper throws his lasso in the Tundra region near the village of Kharsaim, some 2,000 km northeast of Moscow, February 29, 2008.  REUTERS/Vasily Fedosenko
Image: REUTERS/Vasily Fedosenko

Previously frozen organic matter in permafrost decomposes and generates carbon dioxide and methane.

This could increase global warming by as much as 0.27 °C by 2100 and as much as 0.42 °C by 2300, Biskaborn writes.

The Arctic is warming twice as fast as the rest of the planet, research shows, and longer, hotter summers are expediting the melting process. That’s causing huge areas of land to erode and slide, creating "megaslumps".

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One of the biggest is a gaping hole in Siberia’s landscape known as the Batagaika crater.

“There have been reports that these backwards-thawing features are appearing around the Arctic, but this one is in a league of its own,” said Mary Edwards, a professor at the University of Southampton who co-authored a 2017 study of the crater. “Scientifically, it’s very interesting because we can see what’s underground.”

Perhaps the most chilling aspect of this natural phenomenon is how little is really known about its potential impact.

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