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    A Proposed Method of Surface Map Analysis

    Source: Monthly Weather Review:;1999:;volume( 127 ):;issue: 006::page 945
    Author:
    Sanders, Frederick
    DOI: 10.1175/1520-0493(1999)127<0945:APMOSM>2.0.CO;2
    Publisher: American Meteorological Society
    Abstract: Present surface frontal analyses suffer from the defect that frontal positions are typically not collocated with zones of intense temperature contrast. Further, individuals typically do not agree as to the existence, type, and location of fronts. The author argues that the lack of a surface temperature analysis is mainly responsible for these flaws, and it is proposed that such analysis, preferably of potential temperature in regions of variable terrain elevation, become part of routine procedure. Such an analysis will reveal nonfrontal baroclinic zones of considerable intensity. Most cold fronts, except the strongest ones, are denoted as baroclinic troughs, propagating eastward in the prevailing westerly flow. It is argued that when a meridional cold front exists in the presence of even a small meridional temperature gradient, the wind shift should propagate away from the intense surface temperature gradient, which then weakens. An explanation is provided, based on quasigeostrophic theory. It follows that fronts are short-lived phenomena.
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      A Proposed Method of Surface Map Analysis

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4204275
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    contributor authorSanders, Frederick
    date accessioned2017-06-09T16:12:22Z
    date available2017-06-09T16:12:22Z
    date copyright1999/06/01
    date issued1999
    identifier issn0027-0644
    identifier otherams-63289.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4204275
    description abstractPresent surface frontal analyses suffer from the defect that frontal positions are typically not collocated with zones of intense temperature contrast. Further, individuals typically do not agree as to the existence, type, and location of fronts. The author argues that the lack of a surface temperature analysis is mainly responsible for these flaws, and it is proposed that such analysis, preferably of potential temperature in regions of variable terrain elevation, become part of routine procedure. Such an analysis will reveal nonfrontal baroclinic zones of considerable intensity. Most cold fronts, except the strongest ones, are denoted as baroclinic troughs, propagating eastward in the prevailing westerly flow. It is argued that when a meridional cold front exists in the presence of even a small meridional temperature gradient, the wind shift should propagate away from the intense surface temperature gradient, which then weakens. An explanation is provided, based on quasigeostrophic theory. It follows that fronts are short-lived phenomena.
    publisherAmerican Meteorological Society
    titleA Proposed Method of Surface Map Analysis
    typeJournal Paper
    journal volume127
    journal issue6
    journal titleMonthly Weather Review
    identifier doi10.1175/1520-0493(1999)127<0945:APMOSM>2.0.CO;2
    journal fristpage945
    journal lastpage955
    treeMonthly Weather Review:;1999:;volume( 127 ):;issue: 006
    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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