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  2. Arctic oscillation - Wikipedia

    en.wikipedia.org/wiki/Arctic_oscillation

    The greatest negative value for the Arctic oscillation since 1950 in January was −3.767 in 1977, which coincided with the coldest mean January temperature in New York City, Washington, D.C., Baltimore, and many other mid-Atlantic locations in that span of time, although the January Arctic oscillation has been negative only 60.6% of the time ...

  3. Transpolar Drift Stream - Wikipedia

    en.wikipedia.org/wiki/Transpolar_Drift_Stream

    On decadal and longer timescales, the North Atlantic oscillation (NAO) and the Arctic oscillation (AO) indices affect the flow pattern of the transpolar drift stream. During times of positive NAO (NAO+) and positive AO (AO+), there is a weak Arctic high and the associated surface winds produce a cyclonic (anti-clockwise) ice drift motion in ...

  4. Polar vortex - Wikipedia

    en.wikipedia.org/wiki/Polar_vortex

    An index which is used in the northern hemisphere to gauge its magnitude is the Arctic oscillation. [20] When the Arctic vortex is at its strongest, there is a single vortex, but normally, the Arctic vortex is elongated in shape, with two cyclone centers, one over Baffin Island in Canada and the other over northeast Siberia.

  5. That means arctic air is blasting over the US, while pressure changes and the motion of the polar vortex whip up high winds and create a perfect recipe for wintry weather.

  6. Arctic Blast Brings Highest Ice Cover In The Great Lakes In ...

    www.aol.com/arctic-blast-brings-highest-ice...

    The recent arctic blast has pushed ice cover on the Great Lakes to levels not seen since 2022. Lake Erie in particular has become mostly ice covered in quick order. As of January 23, ice cover has ...

  7. What is the Arctic Oscillation? - AOL

    www.aol.com/news/arctic-oscillation-194838702.html

    The Arctic Oscillation is an atmospheric phenomenon that can govern weather and climate patterns across mid- and high-latitude areas not only in North America but across Europe and Asia in the ...

  8. East Greenland Current - Wikipedia

    en.wikipedia.org/wiki/East_Greenland_Current

    The current cuts through the Nordic Seas (the Greenland and Norwegian Seas) and through the Denmark Strait. [2] The current is of major importance because it directly connects the Arctic to the Northern Atlantic, it is a major contributor to sea ice export out of the Arctic, [2] and it is a major freshwater sink for the Arctic. [3]

  9. Atlantic meridional overturning circulation - Wikipedia

    en.wikipedia.org/wiki/Atlantic_meridional...

    AMOC in relation to the global thermohaline circulation . The Atlantic meridional overturning circulation (AMOC) is the main current system in the Atlantic Ocean [1]: 2238 and is also part of the global thermohaline circulation, which connects the world's oceans with a single "conveyor belt" of continuous water exchange. [18]