Future of the Environment

What 100-year-old ships' logbooks tell us about the future of Arctic sea ice

“The volume of sea ice in the Arctic Ocean today and the current rate of loss are unprecedented in the 110-year record,” Image: REUTERS/Michael Kooren

Hannah Hickey

‎Science writer, University of Washington


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Results from the newly created 110-year record of Arctic sea ice volume show an unexplained slight decline (black line) in the early 20th century. The current drop (red line), caused by warming temperatures due to climate change, is more than six times as steep. Image: Axel Schweiger/U. Washington
A digitized 1915 logbook from the US Coast Guard ship Bear, just after the maritime service was given that name. This entry from July 18, 1915, was when the ship was in the Beaufort Sea, on the edge of the area of the model for Arctic sea ice volume. Image: National Archives
This logbook page from the US Coast Guard ship Cutter was written July 9, 1955, in the Chukchi Sea. Image: National Archives

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Related topics:

Future of the EnvironmentClimate ChangeThe Ocean


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