Global warming is expected to be able to trigger abrupt transitions in various components of the climate system. Most studies focus on abrupt changes in the mean state of the system, while transitions in climate variability are less well understood. Here, we use multimodel simulations to show that sea-ice loss in the Arctic can trigger a critical transition in internal variability that leads to the emergence of a new climate oscillation in the Arctic Ocean. The intensified air–sea interaction due to sea-ice melt causes an oscillatory behaviour of surface temperatures on a multidecadal timescale. Our results suggest that a new mode of internal variability will emerge in the Arctic Ocean when sea ice declines below a critical threshold.

Scientists aboard a U.S. Coast Guard icebreaker have discovered something unusual in the Arctic Ocean off northern Alaska: a volcano-like structure rising more than 500 meters from the seafloor and possibly emitting gas. The discovery came as scientists from different organizations were aboard the Healy, one of two polar-class Coast Guard icebreaking cutters, were working on a mission to better understand uncharted waters in the Chukchi and Beaufort seas north of Alaska.

Willem van der Bilt from the Department of Earth Science at the University in Bergen and the Bjerknes Center has, together with a group co-led by Mateusz Strzelecki at the University of Wrocław in Poland, worked on various new methods that extract more societally relevant information about hazards from geological archives such as lake sediments. They combined different high-resolution scanning techniques in a geostatistical framework.

Traditionally, migratory birds are thought to arrive at their wintering grounds after fall migration and remain there until the spring migration back to breeding sites. This assumption forms the basis for determining over-wintering ranges and shaping conservation measures. However, a team led by scientists from the Max Planck Institute of Animal Behavior has discovered that over-wintering ranges may be far more dynamic.

The inaugural Anchorage Security and Defense Conference (ASDC) will convene defense and security practitioners to discuss challenges and opportunities in the circumpolar Arctic and neighboring regions that have international security implications. By providing a forum for dialogue, the ASDC will develop potential solutions and actionable recommendations for practitioners. This year’s theme is drawn from the U.S. National Security Strategy which identifies the 2020s as a “decisive decade.” The inaugural ASDC is an opportunity to examine the geopolitical shifts of the 2020s and their nexus in the Arctic, the North Atlantic, and the North Pacific.

ArcticNet's 5th International Arctic Change Conference (AC2024) brings together researchers from the natural, health, and social sciences to meet the challenges and opportunities of a rapidly changing Arctic region. This conference will push the boundaries of our collective understanding of the Arctic and strengthen our ability to address the issues of today and tomorrow. The Arctic Change Conference brings together a broad range of research in and about the Arctic and northern regions of Canada and the world. The AC2024 advances our collective understanding with an inclusive view of the North spanning from Inuit Nunangat, across the Canadian territories and provinces, circumpolar Arctic regions, and beyond.

Each year, AGU’s annual meeting, the largest gathering of Earth and space scientists, convenes 25,000+ attendees from 100+ countries to share research and connect with friends and colleagues. Scientists, educators, policymakers, journalists and communicators attend AGU24 to better understand our planet and environment, opening pathways to discovery, opening greater awareness to address climate change, opening greater collaborations to lead to solutions and opening the fields and professions of science to a whole new age of justice equity, diversity, inclusion and belonging.

The challenges of today go beyond deadlines decided by governments, territorial claims of oceans and lands, or borders drawn on a map. Addressing global issues requires collaborative efforts and swift decision-making. Dismantling the barriers between science, business, and policy is necessary to deepen communication and enhance our understanding of the pan-Arctic ecosystem. Modern challenges, such as the impacts of climate change, fostering sustainable development, and navigating political tensions, are deeply interconnected. Whilst the financial, societal, and environmental costs of the green transition will not be fairly distributed worldwide, the Arctic is part of the solution.

The Alaska Marine Science Symposium (AMSS), Alaska’s premier marine research conference, 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 conference held annually during the month of January. Each day of the conference highlights important Alaskan marine ecosystems: Gulf of Alaska (Tuesday), Arctic (Wednesday), and the Bering Sea & Aleutian Islands (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.

Arctic360’s Annual Event brings together Northern and Indigenous governments, institutions, and corporations; global finance; state leaders; mining, innovation, and other industry leaders; and Arctic experts from Canada and around the circumpolar North to advance the conversation and foster action for building a sustainable, peaceful, and prosperous Arctic region.

Emergency management in the Arctic is a fast-changing landscape. There have been many developments to emergency prevention, preparedness and response, while at the same time, risk factors and environmental and social conditions are rapidly changing. This event is hosted by the Arctic Council.

In lead up to its 35th anniversary in 2025, the International Arctic Science Committee (IASC) is coordinating a multi-year planning process for the Fourth International Conference on Arctic Research Planning (ICARP IV) that will engage Arctic researchers, policymakers, residents, and stakeholders from around the world to collegially discuss the state of Arctic science, the place the Arctic occupies in global affairs and systems, to consider the most urgent knowledge gaps and research priorities that lie before us and to explore avenues to address these research needs. This event is hosted by a consortium of US institutions, including the University of Colorado Boulder, University of Northern Iowa, University of Alaska Fairbanks, and Alaska Pacific University. ICARP I, II, and III focused the attention of the world’s researchers toward the value of strategic international coordination in accelerating progress in addressing critical challenges. ICARP IV will build upon this concept by striving to achieve consensus and build collaborations among the leading scientific, academic, environmental, Indigenous and political organizations currently concerned with Arctic issues.

Arctic Encounter, North America’s leading conference on Arctic policy and business, annually gathers over 1,000 participants from more than two dozen countries. As a nonprofit NGO, Arctic Encounter convenes and hosts dialogues and policy debates among international leaders, business executives, Indigenous representatives, federal agencies, diplomats, scientists, and policymakers. Hosted in downtown Anchorage, Alaska, the event offers participants a unique blend of arts, culture, and critical discussions, contributing to a deeper understanding of Arctic challenges and opportunities.