Global Ice Story By Joe D'Aleo,
CCM, AMS FellowCo-Founder The Weather Channel
January 27, 2021
The Arctic includes the Arctic Ocean, Greenland, Iceland, and part of Siberia and northern Alaska. Because of the absence of any land mass in the Arctic Ocean, most of area lacks glaciers, which require a land mass. Thus, most of the Arctic contains only floating sea ice. Greenland, Iceland, northern Alaska, and northern Siberia contain the only glaciers in the general Arctic region.Arctic warming and the melting of the arctic ice arenot at all unprecedented (they happenpredictably on multidecadal scales with a period of around 60 years) andarein fact entirely natural.
Warming results in part from the reduction of arctic ice extent because of flows of warm water into the arctic from the Pacific through theBeringStraits and from the Atlanticfrom the farNorth AtlanticCurrent.The warmer water thins the ice from beneath, slows the refreezing and limits to varying degrees the depth and extent of the ice.
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