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Arctic Ocean
The Arctic Ocean is the smallest of the world's five oceans (after the Pacific Ocean, Atlantic Ocean, Indian Ocean, and the recently delimited [established boundaries] Southern Ocean).

The Northwest Passage (U.S. and Canada) and Northern Sea Route (Norway and Russia) are two important seasonal waterways. A sparse network of air, ocean, river, and land routes circumscribes the Arctic Ocean.

The polar climate is characterized by persistent cold and relatively narrow annual temperature ranges; winters characterized by continuous darkness, cold and stable weather conditions, and clear skies; summers characterized by continuous daylight, damp and foggy weather, and weak cyclones with rain or snow.

—Based on information from
Central Intelligence Agency, The World Factbook;
December 13, 2007.
This entry is located in the following unit: oceano-, ocean- + (page 1)