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    Short-Term Climatic Variability of the Arctic

    Source: Journal of Climate:;1990:;volume( 003 ):;issue: 002::page 237
    Author:
    Walsh, John E.
    ,
    Chapman, William L.
    DOI: 10.1175/1520-0442(1990)003<0237:STCVOT>2.0.CO;2
    Publisher: American Meteorological Society
    Abstract: The circulation of the Arctic atmosphere undergoes large fluctuations about its monthly and annual means. The statistics of Arctic sea level pressure and temperature are evaluated in order to place Arctic atmospheric variability into the context of fluctuations elsewhere. The persistence of monthly sea level pressure anomalies in the Arctic is smaller than in the subtropics but greater than in middle latitudes. This persistence is strongest in winter. Air temperature anomalies are less persistent in the Arctic than in lower latitudes, except during the autumn freeze-up season. Monthly Arctic pressure anomalies show a relatively strong association with concurrent anomalies in the North Atlantic, especially during the winter half of the year. Associations with North Pacific anomalies are weak. During the past twenty years, the greatest warming has occurred over Alaska, the North Atlantic marginal ice zone, and north central Asia. Cooling has occurred over much of Europe, especially Scandinavia. The COADS sea surface temperature changes support the pattern of temperature change derived from land station data. The pattern of recent high-latitude temperature change is consistent with and at least partially attributable to corresponding changes in the sea level pressure (gradient wind) field.
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      Short-Term Climatic Variability of the Arctic

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    contributor authorWalsh, John E.
    contributor authorChapman, William L.
    date accessioned2017-06-09T15:11:22Z
    date available2017-06-09T15:11:22Z
    date copyright1990/02/01
    date issued1990
    identifier issn0894-8755
    identifier otherams-3681.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4174856
    description abstractThe circulation of the Arctic atmosphere undergoes large fluctuations about its monthly and annual means. The statistics of Arctic sea level pressure and temperature are evaluated in order to place Arctic atmospheric variability into the context of fluctuations elsewhere. The persistence of monthly sea level pressure anomalies in the Arctic is smaller than in the subtropics but greater than in middle latitudes. This persistence is strongest in winter. Air temperature anomalies are less persistent in the Arctic than in lower latitudes, except during the autumn freeze-up season. Monthly Arctic pressure anomalies show a relatively strong association with concurrent anomalies in the North Atlantic, especially during the winter half of the year. Associations with North Pacific anomalies are weak. During the past twenty years, the greatest warming has occurred over Alaska, the North Atlantic marginal ice zone, and north central Asia. Cooling has occurred over much of Europe, especially Scandinavia. The COADS sea surface temperature changes support the pattern of temperature change derived from land station data. The pattern of recent high-latitude temperature change is consistent with and at least partially attributable to corresponding changes in the sea level pressure (gradient wind) field.
    publisherAmerican Meteorological Society
    titleShort-Term Climatic Variability of the Arctic
    typeJournal Paper
    journal volume3
    journal issue2
    journal titleJournal of Climate
    identifier doi10.1175/1520-0442(1990)003<0237:STCVOT>2.0.CO;2
    journal fristpage237
    journal lastpage250
    treeJournal of Climate:;1990:;volume( 003 ):;issue: 002
    contenttypeFulltext
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