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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. 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]

  4. Arctic blast from polar vortex to send temperatures plunging ...

    www.aol.com/news/arctic-blast-send-temperatures...

    An arctic blast will send temperatures across the United States plummeting as bitterly cold air that originated in Siberia will arrive from Canada by week’s end, bringing with it dangerously ...

  5. 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]

  6. 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 ...

  7. 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.

  8. North Atlantic oscillation - Wikipedia

    en.wikipedia.org/wiki/North_Atlantic_oscillation

    The warming of the air near to the ground leads to rising movements and the atmosphere becomes less stable. One of these patterns is the air pressure difference between the Arctic and mid-latitudes: the Arctic oscillation with the Azores highs and Iceland lows known from the weather reports. If this difference is high, a strong westerly wind ...

  9. 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 ...