North American Arctic

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Map of the Arctic Circle and July isotherm. The North American Arctic is on the left

The North American Arctic comprises the northern portions of Alaska (USA), Northern Canada and Greenland. Major bodies of water include the Arctic Ocean, Hudson Bay, the Gulf of Alaska and North Atlantic Ocean. The western limit is the Seward Peninsula and the Bering Strait. The southern limit is the Arctic Circle latitude of 66° 33’N, which is the approximate limit of the midnight sun and the polar night.

The region is defined by environmental limits where the average temperature for the warmest month (July) is below 10 °C (50 °F). The northernmost tree line roughly follows the isotherm at the boundary of this region. The area has tundra and polar vegetation.


Name of land (above) Country (below)
Alaska Aleutian Islands Canadian Arctic Archipelago Diomede Islands Newfoundland and Labrador Northwest Territories Nunavik Nunavut Yukon
USA USA Canada USA/Russia Canada Canada Canada Canada Canada

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