A new review paper highlights how global warming, projected to reach 2.7 degrees Celsius by the end of the century based on current pledges, will dramatically reshape the Arctic, the fastest-warming region on Earth. The paper, 'Disappearing Landscapes: The Arctic at +2.7°C global warming,' led by Julienne Stroeve, warns of sea-ice-free summers, accelerated melting of the Greenland Ice Sheet, widespread permafrost loss, and more extreme air temperatures. These changes will have devastating impacts on infrastructure, ecosystems, vulnerable communities, and wildlife.
Based on the current pledges of countries for limiting their emissions of greenhouse gases, global temperatures are projected to reach 2.7 degrees Celsius beyond pre-industrial levels by the end of this century. A new review paper highlights how this would dramatically reshape the Arctic, the fastest-warming region of Earth.
In the review paper, the authors used the Sixth Assessment Report of the United Nations Intergovernmental Panel on Climate Change as a starting point. They updated knowledge from the report about three specific areas of the Arctic environment, including sea ice, the Greenland Ice Sheet and permafrost, focusing on existing studies that show consensus about the changes that will take place in the region.
Other co-authors on the paper included Jackie Dawson of the University of Ottawa, Edward A.G. Schuur of Northern Arizona University, Dorthe Dahl-Jensen of the University of Manitoba and University of Copenhagen, and Céline Giesse of the University of Hamburg. Funding came from several sources, with the largest piece of Stroeve's funding from the Canada 150 Research Chairs Program, C150 grant 50296.
ARCTIC CLIMATE CHANGE GLOBAL WARMING GREENLAND ICE SHEET PERMAFROST
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