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    Observations of the Effects of Entrainment and Mixing on the Droplet Size Spectra in a Small Cumulus

    Source: Journal of the Atmospheric Sciences:;1988:;Volume( 046 ):;issue: 007::page 908
    Author:
    Stith, Jeffrey L.
    ,
    Politovich, Marcia K.
    DOI: 10.1175/1520-0469(1989)046<0908:OOTEOE>2.0.CO;2
    Publisher: American Meteorological Society
    Abstract: Sulfur hexafluoride was released at the base of a small nonprecipitating warm cumulus to study cloud mixing and entrainment processes. The tracer gas traveled to the top of the cloud where, during a 2.5 min period, it had mixed to produce a dilute mixture containing 30%, 19% and 51% of air from the original tracer region, an adjacent region of the same cloud, and the environment surrounding the cloud, respectively. The droplet size distributions measured at the top of the cloud represented a mixture of larger droplets that had been growing from the base and smaller, recently activated droplets. The observations suggest that the source region for the small droplets was near cloud top. The large droplet concentration was conserved during the mixing process. These observations are compared with predictions from some recent models for cloud entrainment and droplet evolution.
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      Observations of the Effects of Entrainment and Mixing on the Droplet Size Spectra in a Small Cumulus

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4156222
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    contributor authorStith, Jeffrey L.
    contributor authorPolitovich, Marcia K.
    date accessioned2017-06-09T14:28:51Z
    date available2017-06-09T14:28:51Z
    date copyright1989/04/01
    date issued1988
    identifier issn0022-4928
    identifier otherams-20038.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4156222
    description abstractSulfur hexafluoride was released at the base of a small nonprecipitating warm cumulus to study cloud mixing and entrainment processes. The tracer gas traveled to the top of the cloud where, during a 2.5 min period, it had mixed to produce a dilute mixture containing 30%, 19% and 51% of air from the original tracer region, an adjacent region of the same cloud, and the environment surrounding the cloud, respectively. The droplet size distributions measured at the top of the cloud represented a mixture of larger droplets that had been growing from the base and smaller, recently activated droplets. The observations suggest that the source region for the small droplets was near cloud top. The large droplet concentration was conserved during the mixing process. These observations are compared with predictions from some recent models for cloud entrainment and droplet evolution.
    publisherAmerican Meteorological Society
    titleObservations of the Effects of Entrainment and Mixing on the Droplet Size Spectra in a Small Cumulus
    typeJournal Paper
    journal volume46
    journal issue7
    journal titleJournal of the Atmospheric Sciences
    identifier doi10.1175/1520-0469(1989)046<0908:OOTEOE>2.0.CO;2
    journal fristpage908
    journal lastpage920
    treeJournal of the Atmospheric Sciences:;1988:;Volume( 046 ):;issue: 007
    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
    yabeshDSpacePersian