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Global warming

Climate Change Impacts on Glaciers and Water Resources Highlighted in New Research

Strategic Insights

— 1 min read

Research into the effects of climate change on glaciers and water resources has yielded significant findings. According to a recent study published in the Journal of Hydrology, the Upper Indus Basin (UIB) is among the regions most vulnerable to the consequences of climate change. The study, led by the Chinese Academy of Sciences, has shown that glaciers in the UIB are shrinking at an alarming rate, with an expected ice volume decrease of 39.47% and a 36.74% reduction in area by 2100.

Key Takeaways:

  • The study used the Open Global Glacier Model (OGGM) to simulate glacier dynamics under various climate change scenarios, revealing that large glaciers are becoming narrower and thinner while small glaciers are disappearing.
  • The average annual mass balance of the UIB was found to be -0.16 +/- 0.15 m w.e. a-1 over the last six decades, with significant changes observed in the Zanskar sub-basin.
  • The research indicates that glacial runoff in the UIB will increase by 132.2% by 2100, driven by Karakoram sub-basins glacier runoff.
  • Large glaciers in the UIB are expected to contribute 62.82% of the total glacier runoff, with small glaciers contributing 18.33% and medium-sized glaciers contributing 18.84%.
  • The study also found that the contribution of large glaciers to UIB glacier runoff will decrease over time, with the Karakoram sub-basins accounting for the majority of the glacier runoff.

Statistics:

  • By 2100, the ice volume in the UIB is expected to decrease to 60.53% of its current level.
  • The area of glaciers in the UIB is expected to decrease to 63.26% of its current level by 2100.
  • The glacier runoff from the UIB is expected to increase by 132.2% by 2100.
  • Large glaciers in the UIB are expected to contribute 52.63% to the UIB's total glacier runoff in the Karakoram sub-basins, while their contribution is significantly lower in other regions (5.82% and 4.37% in the Himalayas and Hindukush, respectively).

Sources:

  • NewsRx. Findings in the Area of Climate Change Reported from Chinese Academy of Sciences (Large Glaciers Sustaining the Upper Indus Basin Glacier Runoff In the Future). Global Warming Focus. August 4, 2025; p 75.
  • Large Glaciers Sustaining the Upper Indus Basin Glacier Runoff In the Future. Journal of Hydrology, 2025;657.
  • Elsevier. Journal of Hydrology. www.journals.elsevier.com/journal-of-hydrology/

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