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    Parameterization of Cloud Microphysics Based on the Prediction of Bulk Ice Particle Properties. Part III: Introduction of Multiple Free Categories

    Source: Journal of the Atmospheric Sciences:;2015:;Volume( 073 ):;issue: 003::page 975
    Author:
    Milbrandt, J. A.
    ,
    Morrison, H.
    DOI: 10.1175/JAS-D-15-0204.1
    Publisher: American Meteorological Society
    Abstract: he predicted particle properties (P3) scheme introduced in Part I of this series represents all ice hydrometeors using a single ?free? category, in which the bulk properties evolve smoothly through changes in the prognostic variables, allowing for the representation of any type of ice particle. In this study, P3 has been expanded to include multiple free ice-phase categories allowing particle populations with different sets of bulk properties to coexist, thereby reducing the detrimental effects of property dilution. The modified version of P3 is the first scheme to parameterize ice-phase microphysics using multiple free categories.The multicategory P3 scheme is described and its overall behavior is illustrated. It is shown using an idealized 1D kinematic model that the overall simulation of total ice mass, reflectivity, and surface precipitation converges with additional categories. The correct treatment of the rime splintering process, which promotes multiple ice modes, is shown to require at least two categories in order to be included without introducing problems associated with property dilution. Squall-line simulations using a 3D dynamical model with one, two, and three ice categories produce reasonable reflectivity structures and precipitation rates compared to radar observations. In the multicategory simulations, ice hydrometeors from different categories and with different bulk properties are shown to coexist at the same points, with effects on reflectivity structure and precipitation. The new scheme thus appears to work reasonably in a full 3D model and is ready to be tested more widely for research and operational applications.
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      Parameterization of Cloud Microphysics Based on the Prediction of Bulk Ice Particle Properties. Part III: Introduction of Multiple Free Categories

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4219975
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    contributor authorMilbrandt, J. A.
    contributor authorMorrison, H.
    date accessioned2017-06-09T16:59:00Z
    date available2017-06-09T16:59:00Z
    date copyright2016/03/01
    date issued2015
    identifier issn0022-4928
    identifier otherams-77419.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4219975
    description abstracthe predicted particle properties (P3) scheme introduced in Part I of this series represents all ice hydrometeors using a single ?free? category, in which the bulk properties evolve smoothly through changes in the prognostic variables, allowing for the representation of any type of ice particle. In this study, P3 has been expanded to include multiple free ice-phase categories allowing particle populations with different sets of bulk properties to coexist, thereby reducing the detrimental effects of property dilution. The modified version of P3 is the first scheme to parameterize ice-phase microphysics using multiple free categories.The multicategory P3 scheme is described and its overall behavior is illustrated. It is shown using an idealized 1D kinematic model that the overall simulation of total ice mass, reflectivity, and surface precipitation converges with additional categories. The correct treatment of the rime splintering process, which promotes multiple ice modes, is shown to require at least two categories in order to be included without introducing problems associated with property dilution. Squall-line simulations using a 3D dynamical model with one, two, and three ice categories produce reasonable reflectivity structures and precipitation rates compared to radar observations. In the multicategory simulations, ice hydrometeors from different categories and with different bulk properties are shown to coexist at the same points, with effects on reflectivity structure and precipitation. The new scheme thus appears to work reasonably in a full 3D model and is ready to be tested more widely for research and operational applications.
    publisherAmerican Meteorological Society
    titleParameterization of Cloud Microphysics Based on the Prediction of Bulk Ice Particle Properties. Part III: Introduction of Multiple Free Categories
    typeJournal Paper
    journal volume73
    journal issue3
    journal titleJournal of the Atmospheric Sciences
    identifier doi10.1175/JAS-D-15-0204.1
    journal fristpage975
    journal lastpage995
    treeJournal of the Atmospheric Sciences:;2015:;Volume( 073 ):;issue: 003
    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