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Major tipping points for Earth’s ice sheets and mountain glaciers can occur at temperatures well below 1.5°C. Lead authors of two recent papers – one on ice sheets, the second on glaciers – urge governments to adopt far more ambitious climate commitments by COP30 to prevent the worst impacts.
Historical records show that even current warming levels at 1.2°C, if sustained, will likely lead to several meters of sea-level rise over coming centuries. Earth’s glaciers face an equally dire fate, with four regions – the European Alps, Rockies of the Western U.S. and Canada, Iceland, and Scandinavia – committed to losing at least half their ice at or below sustained 1°C. These same regions lose nearly all ice at 2°C.
Speakers include Dr. Chris Stokes from Durham University and Dr. Harry Zekollari from Vrije Universiteit Brussel. They recently published their findings in two papers, outlined below:
Warming of 1.5 °C is too high for polar ice sheets
Summary for policy makers: https://iccinet.org/re...?
Glacier preservation doubled by limiting warming to 1.5°C versus 2.7°C
Summary for policy makers: https://iccinet.org/ne...?
This press conference was held on 17 June 2025 during the first week of SB62 climate negotiations in Bonn. These meetings drive forward progress on key issues and prepare decisions for adoption at COP30 in Belém this November.