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Change in Permafrost Temperatures in Alaska, 1978-2023

Published by U.S. Environmental Protection Agency, Office of Air and Radiation | U.S. Environmental Protection Agency | Catalog Last Checked: May 26, 2026 at 04:12 PM | Dataset Last Updated: May 20, 2026 at 12:00 AM
This map shows the change in permafrost temperature per decade for long-term borehole sites in Alaska. As the circles get larger, the rate of warming per decade increases. The blue circle represents a cooling trend. For more information: https://www.epa.gov/climatechange/science/indicators.

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