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    Objective Classification of Tropical Mesoscale Convective Systems

    Source: Journal of Climate:;2009:;volume( 022 ):;issue: 022::page 5797
    Author:
    Pope, Mick
    ,
    Jakob, Christian
    ,
    Reeder, Michael J.
    DOI: 10.1175/2009JCLI2777.1
    Publisher: American Meteorological Society
    Abstract: A cluster analysis is applied to the mesoscale convective systems (MCSs) that developed in northern Australia and the surrounding oceans during six wet seasons (September?April) from 1995/96 to 2000/01. During this period, 13 585 MCSs were identified and tracked using an infrared channel (IR1) on the Japanese Meteorological Agency Geostationary Meteorological Satellite 5 (GMS5). Based on the lifetimes of the MCSs, the area covered by cloud, the expansion rate of the cloud, the minimum cloud-top temperature, and their zonal direction of propagation, the MCSs are grouped objectively into four classes. One of the strengths of the analysis is that it objectively condenses a large dataset into a small number of classes, each with its own physical characteristics. MCSs in class 1 (short) are relatively short lived, with 95% having lifetimes less than 5 h, and they are found most frequently over the oceans during the early and late parts of the wet season. MCSs in classes 2 and 3 [long and intermediate west (Int-West)] are longer lived and propagate to the west, developing over continental northwest Australia in deep easterly flow during breaks in the monsoon. These two classes are distinguished principally by their lifetime, with 95% of MCSs in the long class having lifetimes exceeding 4 h. Class 4 (Int-East) comprises MCSs that form over the subtropical latitudes of eastern Australia and in the deep westerly flow over northern parts of the continent during the monsoon and active phases of the MJO.
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      Objective Classification of Tropical Mesoscale Convective Systems

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    contributor authorPope, Mick
    contributor authorJakob, Christian
    contributor authorReeder, Michael J.
    date accessioned2017-06-09T16:29:09Z
    date available2017-06-09T16:29:09Z
    date copyright2009/11/01
    date issued2009
    identifier issn0894-8755
    identifier otherams-68718.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4210307
    description abstractA cluster analysis is applied to the mesoscale convective systems (MCSs) that developed in northern Australia and the surrounding oceans during six wet seasons (September?April) from 1995/96 to 2000/01. During this period, 13 585 MCSs were identified and tracked using an infrared channel (IR1) on the Japanese Meteorological Agency Geostationary Meteorological Satellite 5 (GMS5). Based on the lifetimes of the MCSs, the area covered by cloud, the expansion rate of the cloud, the minimum cloud-top temperature, and their zonal direction of propagation, the MCSs are grouped objectively into four classes. One of the strengths of the analysis is that it objectively condenses a large dataset into a small number of classes, each with its own physical characteristics. MCSs in class 1 (short) are relatively short lived, with 95% having lifetimes less than 5 h, and they are found most frequently over the oceans during the early and late parts of the wet season. MCSs in classes 2 and 3 [long and intermediate west (Int-West)] are longer lived and propagate to the west, developing over continental northwest Australia in deep easterly flow during breaks in the monsoon. These two classes are distinguished principally by their lifetime, with 95% of MCSs in the long class having lifetimes exceeding 4 h. Class 4 (Int-East) comprises MCSs that form over the subtropical latitudes of eastern Australia and in the deep westerly flow over northern parts of the continent during the monsoon and active phases of the MJO.
    publisherAmerican Meteorological Society
    titleObjective Classification of Tropical Mesoscale Convective Systems
    typeJournal Paper
    journal volume22
    journal issue22
    journal titleJournal of Climate
    identifier doi10.1175/2009JCLI2777.1
    journal fristpage5797
    journal lastpage5808
    treeJournal of Climate:;2009:;volume( 022 ):;issue: 022
    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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