Arctic

Arctic
Name	Arctic
Caption	Map of the northern polar region
Area km2	14000000
Population	4 million
Countries	Canada; Denmark; Finland; Iceland; Norway; Russia; Sweden; United States
Capitals	Nuuk; Longyearbyen; Tromsø; Iqaluit

Arctic The Arctic is the polar region at the northernmost part of Earth, characterized by persistent ice, extreme seasonality, and unique human and natural systems. It spans parts of several countries including Canada, Russia, United States, Norway, Denmark, Iceland, Finland, and Sweden, and interfaces with institutions such as the Arctic Council and scientific programs like the International Arctic Science Committee.

Geography and Boundaries

The Arctic encompasses the Arctic Ocean and adjacent seas such as the Barents Sea, Beaufort Sea, Chukchi Sea, Kara Sea, Laptev Sea, and Greenland Sea, and includes landmasses like Greenland, the Canadian Arctic Archipelago, Svalbard, and the Lapland regions of northern Norway, Sweden, and Finland. Definitions vary by legal and scientific authorities: the Arctic Circle (66°33′N) is a geographic marker, while the United Nations Convention on the Law of the Sea and the Arctic Climate Impact Assessment apply oceanographic, ecological, and political criteria. Bordering features include the North Pole, the Bering Strait between Russia and the United States, and continental shelves subject to claims by states including Canada and Russia under procedures of the United Nations Commission on the Limits of the Continental Shelf.

Climate and Sea Ice

Polar climate in the region is influenced by currents like the Gulf Stream and the North Atlantic Current, atmospheric patterns including the Arctic Oscillation and the North Atlantic Oscillation, and teleconnections with systems such as the Pacific Decadal Oscillation. Seasonal daylight extremes—midnight sun and polar night—shape temperature and ice dynamics recorded by programs like NOAA and the European Space Agency missions. Sea ice extent and thickness are monitored by satellites including ICESat and CryoSat; long-term trends documented by the Intergovernmental Panel on Climate Change show reductions in multiyear ice and earlier melt seasons. Episodic events such as polar cyclones and anomalous heat transported by the Jet stream influence summer minima and winter variability.

Ecosystems and Biodiversity

Arctic ecosystems range from marine food webs anchored by phytoplankton to tundra communities dominated by dwarf shrubs and mosses; key species include polar bear, ringed seal, walrus, narwhal, beluga whale, bowhead whale, and avian migrants like the Arctic tern and snowy owl. Terrestrial fauna includes reindeer (caribou), Arctic fox, lemming, and the northernmost populations of brown bear. Vegetation is documented in floras and inventories compiled by institutions such as the Royal Botanic Gardens, Kew and the Norwegian Polar Institute. Marine productivity is shaped by upwelling zones near the Barents Sea and estuarine inputs from rivers like the Yenisei River, Lena River, and Mackenzie River, supporting fisheries that involve species such as Arctic cod and commercial stocks targeted in management regimes like those overseen by the North Atlantic Fisheries Organization.

Indigenous Peoples and Cultures

The region is home to diverse Indigenous groups including the Inuit (across Greenland, Canada, Alaska), the Sámi (in Norway, Sweden, Finland, and Russia), the Yupik and Chukchi (in Russia and Alaska), and numerous First Nations and Métis communities in Canada such as the Inuvialuit. Cultural practices include hunting techniques, seasonal migration, and material cultures recorded in museums like the National Museum of Denmark and the Smithsonian Institution. Indigenous governance and rights are advanced through organizations like the Sámi Council, land-claim agreements such as the Nunavut Act and the Inuvialuit Final Agreement, and international fora including the United Nations Declaration on the Rights of Indigenous Peoples.

History of Exploration and Economic Activity

European and global exploration involved expeditions by figures and ships tied to events like the Age of Discovery, Roald Amundsen's voyages, Fridtjof Nansen's crossings, and Robert Peary's North Pole claims; scientific enterprises included the International Geophysical Year. Economic activity has ranged from the fur trade and whaling managed by companies such as the Hudson's Bay Company and the Dutch East India Company's Northern ventures, to 20th-century extraction of oil and gas by corporations operating in regions governed by laws like the Outer Continental Shelf Lands Act and contested in disputes exemplified by the Soviet-American relations over sea passages. Infrastructure projects such as the Northern Sea Route development, ports like Murmansk, and resource projects in places like the Yamal Peninsula have reshaped regional economies and geopolitics.

Environmental Issues and Climate Change

Rapid warming documented by the Intergovernmental Panel on Climate Change has led to permafrost thaw, coastal erosion, altered phenology, and threats to species documented in IUCN Red List assessments. Pollution issues include persistent organic pollutants tracked under the Stockholm Convention, black carbon influencing albedo, and oil-spill risks associated with shipping through corridors monitored by the International Maritime Organization under instruments like the Polar Code. Responses encompass scientific programs such as the Svalbard Global Seed Vault (for genetic conservation), regional monitoring by the Circumpolar Biodiversity Monitoring Program, and adaptation planning in Arctic municipalities like Barrow, Alaska (Utqiaġvik) and Longyearbyen.

Governance and International Cooperation

Transboundary governance in the region involves the Arctic Council as a high-level intergovernmental forum, the Barents Euro-Arctic Council, and legal instruments including the United Nations Convention on the Law of the Sea that underpin continental shelf submissions by Russia and Canada. Military and security dimensions intersect with national policies of states such as the United States Department of Defense and the Russian Armed Forces and with search-and-rescue frameworks like the Agreement on Cooperation on Aeronautical and Maritime Search and Rescue in the Arctic. Science diplomacy is practiced through collaborations like the International Arctic Science Committee and bilateral research arrangements between institutions such as the Norwegian Polar Institute and Russian Academy of Sciences.

Category:Polar regions