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    The Influence of Recurrent Modes of Climate Variability on the Occurrence of Winter and Summer Extreme Temperatures over North America

    Source: Journal of Climate:;2013:;volume( 027 ):;issue: 004::page 1600
    Author:
    Loikith, Paul C.
    ,
    Broccoli, Anthony J.
    DOI: 10.1175/JCLI-D-13-00068.1
    Publisher: American Meteorological Society
    Abstract: he influence of the Pacific?North American (PNA) pattern, the northern annular mode (NAM), and the El Niño?Southern Oscillation (ENSO) on extreme temperature days and months over North America is examined. Associations between extreme temperature days and months are strongest with the PNA and NAM and weaker for ENSO. In general, the association with extremes tends to be stronger on monthly than daily time scales and for winter as compared to summer. Extreme temperatures are associated with the PNA and NAM in the vicinity of the centers of action of these circulation patterns; however, many extremes also occur on days when the amplitude and polarity of these patterns do not favor their occurrence. In winter, synoptic-scale, transient weather disturbances are important drivers of extreme temperature days; however, many of these smaller-scale events are concurrent with amplified PNA or NAM patterns. Associations are weaker in summer when other physical mechanisms affecting the surface energy balance, such as anomalous soil moisture content, also influence the occurrence of extreme temperatures.
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      The Influence of Recurrent Modes of Climate Variability on the Occurrence of Winter and Summer Extreme Temperatures over North America

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4222784
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    contributor authorLoikith, Paul C.
    contributor authorBroccoli, Anthony J.
    date accessioned2017-06-09T17:08:13Z
    date available2017-06-09T17:08:13Z
    date copyright2014/02/01
    date issued2013
    identifier issn0894-8755
    identifier otherams-79948.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4222784
    description abstracthe influence of the Pacific?North American (PNA) pattern, the northern annular mode (NAM), and the El Niño?Southern Oscillation (ENSO) on extreme temperature days and months over North America is examined. Associations between extreme temperature days and months are strongest with the PNA and NAM and weaker for ENSO. In general, the association with extremes tends to be stronger on monthly than daily time scales and for winter as compared to summer. Extreme temperatures are associated with the PNA and NAM in the vicinity of the centers of action of these circulation patterns; however, many extremes also occur on days when the amplitude and polarity of these patterns do not favor their occurrence. In winter, synoptic-scale, transient weather disturbances are important drivers of extreme temperature days; however, many of these smaller-scale events are concurrent with amplified PNA or NAM patterns. Associations are weaker in summer when other physical mechanisms affecting the surface energy balance, such as anomalous soil moisture content, also influence the occurrence of extreme temperatures.
    publisherAmerican Meteorological Society
    titleThe Influence of Recurrent Modes of Climate Variability on the Occurrence of Winter and Summer Extreme Temperatures over North America
    typeJournal Paper
    journal volume27
    journal issue4
    journal titleJournal of Climate
    identifier doi10.1175/JCLI-D-13-00068.1
    journal fristpage1600
    journal lastpage1618
    treeJournal of Climate:;2013:;volume( 027 ):;issue: 004
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
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