Central Asia’s resilient glaciers face irreversible decline
Study shows snow deficits and rising heat pushing once-stable glaciers into rapid decline, threatening Central Asia’s water security
DUSHANBE, Tajikistan (MNTV) — A new international study has found that glaciers in the Pamirs, long considered among the world’s most resilient, are now rapidly losing mass as climate change accelerates snow deficits and extreme heat in Central Asia.
Researchers from Austria’s Institute of Science and Technology (ISTA) and partner institutions installed a climate station on the Kyzylsu glacier, tracking conditions across the northwestern Pamirs between 1999 and 2023.
Their findings, published in Communications Earth & Environment, point to 2018 as a turning point — the year when declining snow cover and reduced precipitation irreversibly shifted the glaciers’ mass balance.
According to the study, snow depth in the northwest Pamirs has fallen by an average of 40 centimeters since 2018, while precipitation dropped 328 millimeters below normal, or about 28 percent of the annual average.
Seasonal snow now melts roughly two weeks earlier than before, weakening the natural “cold reserves” that had preserved the Pamir-Karakoram Anomaly — the decades-long mystery of why these glaciers remained stable even as others worldwide receded.
The researchers warn that the region has entered an “accelerated melting mode.” With insufficient snowfall, glaciers are compensating by melting their own ice, a self-destructive process that cannot be reversed without major global climate action.
“Since 2018, conditions have deteriorated dramatically,” said ISTA researcher Achille Jouberton. “Reduced precipitation has had a critical impact on glacier stability.”
The consequences are far-reaching. The Amu Darya, Syr Darya, and other rivers that originate in the Pamirs and Karakoram rely heavily on glacial melt. Millions of people across Central Asia depend on these rivers for drinking water, irrigation, and hydropower.
But despite an increase in glacial runoff — rising from 19 percent to 31 percent of river flow — overall water levels have declined. Between 1999 and 2018, river discharge fell by about 189 millimeters in water equivalent.
According to Asia Plus, satellite data from MODIS, Landsat, and Sentinel-2 confirm that these losses are not confined to the Kyzylsu but extend across the northwestern Pamirs. July 2022, the hottest month on record, highlighted the crisis, as glaciers suffered record mass losses while rivers still carried less water than normal.
Scientists emphasize that the crisis is not just regional. Glaciers in the Pamirs are part of the “water towers of Asia,” feeding systems that sustain agriculture and ecosystems far downstream. Their decline threatens food production, energy security, and social stability in one of the world’s most water-stressed regions.
For decades after the Soviet collapse, glacier monitoring in the Pamirs was minimal. Only in 2021 did international teams resume systematic observations with new climate stations. Their data now provide a clear warning: even the most resilient glaciers are no longer immune to global warming.
“This is a global alert,” said study leader Francesca Pellicciotti. “The loss of the Pamirs’ glaciers threatens not just Central Asia, but climate stability worldwide.”
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