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    Mesoscale Boundary-Layer Evolution over Complex Terrain. Part II: Factors Controlling Nocturnal Boundary-Layer Structure

    Source: Monthly Weather Review:;1992:;volume( 120 ):;issue: 005::page 802
    Author:
    Bader, David C.
    ,
    McKee, Thomas B.
    DOI: 10.1175/1520-0493(1992)120<0802:MBLEOC>2.0.CO;2
    Publisher: American Meteorological Society
    Abstract: The development of the nocturnal boundary layer (NBL) over a sloping plateau upwind of a high mountain barrier is studied with a numerical model and field observations. Six numerical simulations and one observed case are used to describe the effects of wind speed, wind direction, and sunset mixed-layer depth on the NBL structure 6 h after sunset. When there is a component of wind into barrier, a two-layer structure develops. A 75-175-m-deep inversion layer that is topped by a 200-300-m-deep, less stable transition layer extends over the length of the plateau. Shear between the 3?4 m s?1 drainage winds in the inversion layer and the large-scale wind mix cold air vertically to build the transition layer. The inversion layer appears to be relatively insensitive to changes in the external parameters, but transition-layer depth is proportional to wind speed.
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      Mesoscale Boundary-Layer Evolution over Complex Terrain. Part II: Factors Controlling Nocturnal Boundary-Layer Structure

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/4202781
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    contributor authorBader, David C.
    contributor authorMcKee, Thomas B.
    date accessioned2017-06-09T16:08:43Z
    date available2017-06-09T16:08:43Z
    date copyright1992/05/01
    date issued1992
    identifier issn0027-0644
    identifier otherams-61944.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4202781
    description abstractThe development of the nocturnal boundary layer (NBL) over a sloping plateau upwind of a high mountain barrier is studied with a numerical model and field observations. Six numerical simulations and one observed case are used to describe the effects of wind speed, wind direction, and sunset mixed-layer depth on the NBL structure 6 h after sunset. When there is a component of wind into barrier, a two-layer structure develops. A 75-175-m-deep inversion layer that is topped by a 200-300-m-deep, less stable transition layer extends over the length of the plateau. Shear between the 3?4 m s?1 drainage winds in the inversion layer and the large-scale wind mix cold air vertically to build the transition layer. The inversion layer appears to be relatively insensitive to changes in the external parameters, but transition-layer depth is proportional to wind speed.
    publisherAmerican Meteorological Society
    titleMesoscale Boundary-Layer Evolution over Complex Terrain. Part II: Factors Controlling Nocturnal Boundary-Layer Structure
    typeJournal Paper
    journal volume120
    journal issue5
    journal titleMonthly Weather Review
    identifier doi10.1175/1520-0493(1992)120<0802:MBLEOC>2.0.CO;2
    journal fristpage802
    journal lastpage816
    treeMonthly Weather Review:;1992:;volume( 120 ):;issue: 005
    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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