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No Arctic-science events are scheduled for today.
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High Sensitivity of Bering Sea Winter Sea Ice to Winter Insolation and Carbon Dioxide Over the Last 5500 Years, Science Advances (September 2020). Anomalously low winter sea ice extent and early retreat in CE 2018 and 2019 challenge previous notions that winter sea ice in the Bering Sea has been stable over the instrumental record, although long-term records remain limited. Here, we use a record of peat cellulose oxygen isotopes from St. Matthew Island along with isotope-enabled general circulation model (IsoGSM) simulations to generate a 5500-year record of Bering Sea winter sea ice extent. Results show that over the last 5500 years, sea ice in the Bering Sea decreased in response to increasing winter insolation and atmospheric CO2, suggesting that the North Pacific is highly sensitive to small changes in radiative forcing. We find that CE 2018 sea ice conditions were the lowest of the last 5500 years, and results suggest that sea ice loss may lag changes in CO2 concentrations by several decades.
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Media
The Arctic is Shifting to a New Climate Because of Global Warming. The effects of global warming in the Arctic are so severe that the region is shifting to a different climate, one characterized less by ice and snow and more by open water and rain, scientists said Monday. Already, they said, sea ice in the Arctic has declined so much that even an extremely cold year would not result in as much ice as was typical decades ago. Two other characteristics of the region's climate, seasonal air temperatures and the number of days of rain instead of snow, are shifting in the same way, the researchers said. New York Times
 Arctic Transitioning to a New Climate State. The fast-warming Arctic has started to transition from a predominantly frozen state into an entirely different climate, according to a comprehensive new study of Arctic conditions. Weather patterns in the upper latitudes have always varied from year to year, with more or less sea ice, colder or warmer winters, and longer or shorter seasons of rain instead of snow. But the new research by scientists at the National Center for Atmospheric Research (NCAR) finds that the Arctic has now warmed so significantly that its year-to-year variability is moving outside the bounds of any past fluctuations, signaling the transition to a "new Arctic" climate regime. Phys.org
Arctic Test Center to be Established in Nuuk. Sermersooq (Greenland) and Aalborg (Denmark) municipalities Friday signed an agreement about developing an Arctic test center in Nuuk, according to Sermitsiaq. The test center will be the location for a series of tests with green technologies under extreme climate conditions and is also to be part of breaking new ground for green technology in the Arctic. High North News
 After Decades of Climate Change, 42 Square Miles of Ice Broke Away From the Largest Remaining Arctic Shelf and Shattered. The dramatic split took place this summer, and represents a huge loss to the world's largest remaining ice shelf. Satellite images show where the huge chunk of ice has left the Nioghalvfjerdsfjorden shelf in northeast Greenland. According to the Geological Survey of Denmark and Greenland (GEUS), the process is part of a progressive disintegration following several unusually warm years. Business Insider
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Future Events
** New this week ** Advancing Collaboration in Canada- US Arctic Regional Security, September 17-18, 2020 (virtual). This event is hosted by the North American and Arctic Defense and Security, The Arctic Domain Awareness Center, Trent University, and the University of Alaska Anchorage. Focusing on emerging trends in medium- and long-term North American Arctic security environment, the mix of academics and practitioners at this workshop will anticipate potential North American Arctic futures to identify potential gaps and shortfalls in current strategies, capabilities, and research.
 ** New this week ** United States Air Force Arctic Strategy: Perspectives and Insights, 12:00 pm EDT on October 5, 2020 (virtual). This event is hosted by the Polar Institute of the Wilson Center. The Air Force Arctic Strategy was released in July 2020. According to the Department of the Air Force, "The strategy outlines the Department's unique regional role and efforts to optimize Air and Space capabilities throughout the region in support of the National Defense Strategy." We are honored to host a group of distinguished military leaders for a facilitated round table discussion regarding the Air Force Arctic Strategy to include contextual perspectives about the new Arctic, the Arctic in context of Great Power Competition, and the role and importance of the Air Force in Alaska and the Arctic.
2021 Alaska Marine Science Symposium, January 26-28, 2021 (virtual). The Alaska Marine Science Symposium (AMSS) has been bringing together scientists, educators, resource managers, students, and interested public for over twenty years to discuss the latest marine research being conducted in Alaskan waters. Over 700 people attend this 4-day long conference held annually during the month of January. Each day of the conference highlights important Alaskan marine ecosystems: Gulf of Alaska (Tuesday), Bering Sea & Aleutian Islands (Wednesday), and the Arctic (Thursday). Research topics discussed range from ocean physics, fishes and invertebrates, seabirds, marine mammals, to local traditional knowledge. Since its inception, NPRB has been a proud sponsor and one of the leading organizers of AMSS.
Arctic Frontiers 2021, February 1-4, 2021 (virtual). Arctic Frontiers started out in 2006 assembling the first global scientific conference on economic, societal and environmental sustainable growth in the north. In February 2021, we will arrange the 15th conference with the theme "Building Bridges". The conference has a pan arctic perspective and builds new partnerships across nations, generations and ethnic groups. Arctic Frontiers provides a forum for dialogue and communication between science, government and industry in the Arctic.
Arctic Science Summit Week, March 20-26, 2021 (Lisbon, Portugal). The Portuguese Minister of Science, Technology and Higher Education, the Portuguese Foundation for Science and Technology (FCT) and the Local Organizing Committee will host the Arctic Science Summit Week 2021. The Conference is organized by FCT, Ciência Viva, AIR Center, the Portuguese Arctic Community and by IASC and partners. Framed by the overarching theme for the Science Conference "The Arctic: Regional Changes, Global Impacts," Lisbon invites International experts on the Arctic and Indigenous Peoples to discuss the "New Arctic" and also its impacts and interactions to and with the lower latitudes.
2nd Symposium on Polar Microbes and Viruses, May 3-6, 2021 (Hanko, Finland). Organizers announce, that due to the coronavirus outbreak, the 2nd Symposium on Polar Microbes and Viruses has been postponed to 2021. This symposium will bring together molecular microbial ecologists specializing in different organism groups to share our latest results and discuss methodological problems, as well as future prospects in the field, including practical international collaborations. The environmental focus will be on cryospheric environments including sea ice, glaciers, ice sheets, and permafrost, but excellent research in other polar environments is also invited. The methods to be discussed will focus on 'omics' techniques, ranging from single cells to metagenomes, but research using additional methods is encouraged as well.
3rd Arctic Science Ministerial, May 8-9, 2021 (Toyko, Japan). The Japanese and Icelandic organizers of this ministerial continue to plan for an in-person ministerial, in Tokyo, but have moved the dates from November 21-22, 2020 to May 8-9, 2021 because of Covid-19. Since the last Arctic Science Ministerial in 2018, changes in the Arctic ecosystem and the resulting impacts locally and globally have been severely felt. Considering the need for climate change mitigation, adaptation, and repair measures, the relevance of an international Arctic Science Ministerial has never been greater. It is necessary to strengthen scientific cooperation and collaboration among both Arctic and non-Arctic States in order to develop our understanding of the rapid changes impacting the Arctic. The First Arctic Science Ministerial (ASM1) was hosted by the United States in 2016, and two years later, the Second Arctic Science Ministerial (ASM2) was co-hosted by Germany, Finland, and the European Commission. ASM3 will be co-hosted by Iceland and Japan.
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