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    Modifications to the Near-Storm Environment Induced by Simulated Supercell Thunderstorms

    Source: Monthly Weather Review:;2015:;volume( 144 ):;issue: 001::page 273
    Author:
    Nowotarski, Christopher J.
    ,
    Markowski, Paul M.
    DOI: 10.1175/MWR-D-15-0247.1
    Publisher: American Meteorological Society
    Abstract: his study investigates the changes that simulated supercell thunderstorms impart on their surroundings. Supercells are simulated in a strongly sheared convective boundary layer comprising horizontal roll vortices. In sensitivity tests, the effects of cloud shading on the near-storm environment are explored through the removal of cloud ice, water, and hydrometeor effects on parameterized radiation. All of the simulated supercells increase the low-level shear in their proximal environment; however, this effect is more pronounced when cloud shading is included. Shading stabilizes the boundary layer beneath the cirrus anvil, diminishes boundary layer rolls and their attendant thermodynamic perturbations, and reduces the intensity of resolved turbulent mixing in the convective boundary layer. Anvil shading also acts to reduce the buoyancy of inflow air and the horizontal buoyancy gradient along the forward-flank outflow boundary.
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      Modifications to the Near-Storm Environment Induced by Simulated Supercell Thunderstorms

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/4230776
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    contributor authorNowotarski, Christopher J.
    contributor authorMarkowski, Paul M.
    date accessioned2017-06-09T17:33:13Z
    date available2017-06-09T17:33:13Z
    date copyright2016/01/01
    date issued2015
    identifier issn0027-0644
    identifier otherams-87140.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4230776
    description abstracthis study investigates the changes that simulated supercell thunderstorms impart on their surroundings. Supercells are simulated in a strongly sheared convective boundary layer comprising horizontal roll vortices. In sensitivity tests, the effects of cloud shading on the near-storm environment are explored through the removal of cloud ice, water, and hydrometeor effects on parameterized radiation. All of the simulated supercells increase the low-level shear in their proximal environment; however, this effect is more pronounced when cloud shading is included. Shading stabilizes the boundary layer beneath the cirrus anvil, diminishes boundary layer rolls and their attendant thermodynamic perturbations, and reduces the intensity of resolved turbulent mixing in the convective boundary layer. Anvil shading also acts to reduce the buoyancy of inflow air and the horizontal buoyancy gradient along the forward-flank outflow boundary.
    publisherAmerican Meteorological Society
    titleModifications to the Near-Storm Environment Induced by Simulated Supercell Thunderstorms
    typeJournal Paper
    journal volume144
    journal issue1
    journal titleMonthly Weather Review
    identifier doi10.1175/MWR-D-15-0247.1
    journal fristpage273
    journal lastpage293
    treeMonthly Weather Review:;2015:;volume( 144 ):;issue: 001
    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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