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Himalayan glaciers could lose 80% of their volume if global warming isn’t controlled, study finds



FILE - A bird flies with Mount Everest seen in the background from Namche Bajar, Solukhumbu district, Nepal, May 27, 2019. A new report Tuesday, June 20, 2023, from a Nepal-based research organization finds that water security for nearly 2 billion people living downstream of rivers that originate in the Himalayan ranges will likely be threatened by the end of this century due to rapid glacier melt if global warming is not controlled. (AP Photo/Niranjan Shrestha, File)

BENGALURU, India (AP) — Glaciers are melting at unprecedented rates across the Hindu Kush Himalayan mountain ranges and could lose up to 80% of their volume this century if greenhouse gas emissions aren’t sharply reduced, according to a report.

The report Tuesday from Kathmandu-based International Centre for Integrated Mountain Development warned that flash floods and avalanches would grow more likely in coming years, and that the availability of fresh water would be affected for nearly 2 billion people who live downstream of 12 rivers that originate in the mountains.

Ice and snow in the Hindu Kush Himalayan ranges is an important source of water for those rivers, which flow through 16 countries in Asia and provide fresh water to 240 million people in the mountains and another 1.65 billion downstream.

“The people living in these mountains who have contributed next to nothing to global warming are at high risk due to climate change,” said Amina Maharjan, a migration specialist and one of the report’s authors. “Current adaptation efforts are wholly insufficient, and we are extremely concerned that without greater support, these communities will be unable to cope.”

Various earlier reports have found that the cryosphere — regions on Earth covered by snow and ice — are among the worst affected by climate change. Recent research found that Mount Everest’s glaciers, for example, have lost 2,000 years of ice in just the past 30 years.

“We map out for the first time the linkages between cryosphere change with water, ecosystems and society in this mountain region,” Maharjan said.

Among the key findings from Tuesday’s report are that the Himalayan glaciers disappeared 65% faster since 2010 than in the previous decade and reducing snow cover due to global warming will result in reduced fresh water for people living downstream. The study found that 200 glacier lakes across these mountains are deemed dangerous, and the region could see a significant spike in glacial lake outburst floods by the end of the century.

The study found that communities in the mountain regions are being affected by climate change far more than many other parts of the world. It says changes to the glaciers, snow and permafrost of the Hindu Kush Himalayan region driven by global warming are “unprecedented and largely irreversible.”

Effects of climate change are already felt by Himalayan communities sometimes acutely. Earlier this year the Indian mountain town of Joshimath began sinking and residents had to be relocated within days.

“Once ice melts in these regions, it’s very difficult to put it back to its frozen form,” said Pam Pearson, director of the International Cryosphere Climate Initiative, who was not involved with the report.

She added, “It’s like a big ship in the ocean. Once the ice starts going, it’s very hard to stop. So, with glaciers, especially the big glaciers in the Himalayas, once they start losing mass, that’s going to continue for a really long time before it can stabilize.”

Pearson said it is extremely important for Earth’s snow, permafrost and ice to limit warming to the 1.5 degrees Celsius agreed to at the 2015 Paris climate conference.

“I get the sense that most policymakers don’t take the goal seriously but, in the cryosphere, irreversible changes are already happening,” she said.

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  1. walden

    June 20, 2023 at 12:41 pm

    India and China are the largest polluters on the planet and last I checked are pretty near the Himalayan Mountains. I am sure this week Blinken gave Xi a stern talking to about China’s pollution (just before getting kicked to the curb).

  2. Tom

    June 21, 2023 at 7:57 am

    I think science tells us that ice does not evaporate (or does so very slowly) but H2O in liquid state does. When water evaporates, it makes rain clouds which makes RAIN – a good thing.

  3. fritz dahmus

    June 21, 2023 at 12:44 pm

    What are they looking for? Ice increasing? At what rate? ice decreasing? At what rate? Ice never changing…..ever??

    Can they tells us that losing 2000 years of ice in 30 years has never happened before? If so when and how and why.

    The lady preaching to us in this article. Does she drive a car? Does she use a cell phone. Does she fly? Does she use any modern convenience? Does her cat fart?

    I believe this is happening. I wll always believe we should be everything to have clean air and water…..but not over all of our collective dead bodies.

    Let’s do something for these Himalayan communities. Drill a well?? Move them to a safer area? But that won’t make this lady’s point. So that will be a no go.

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