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    Aspects of Regional-Scale Flows in Mountainous Terrain

    Source: Journal of Applied Meteorology:;1989:;volume( 028 ):;issue: 007::page 590
    Author:
    Bossert, James E.
    ,
    Sheaffer, John D.
    ,
    Reiter, Elmar R.
    DOI: 10.1175/1520-0450(1989)028<0590:AORSFI>2.0.CO;2
    Publisher: American Meteorological Society
    Abstract: Mountaintop data from remote stations in the central Rocky Mountains have been used to analyze terrain-induced regional (meso-? to meso-α) scale circulation patterns. The circulation consists of a diurnally oscillating wind regime, varying between daytime inflow toward, and nocturnal outflow from, the highest terrain. Both individual case days and longer term averages reveal these circulation characteristics. The persistence and broadscale organization of nocturnal outflow at mountaintop, well removed from valley drainage processes, demonstrates that this flow is part of a distinct regime within the hierarchy of terrain-induced wind systems. The diurnal cycle of summertime convective storm development imparts a strong influence upon regional-scale circulation patterns. Subcloud cooling processes, associated with deep moist convection, alter the circulation by producing early and abrupt shifts in the regional winds from an inflow to outflow direction. These wind events occur frequently when moist conditions prevail over the central Rocky Mountains. Atmospheric soundings suggest that significant differences occur in the vertical profile of the topographically influenced layer, depending upon the dominant role of either latent or radiative forcing.
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      Aspects of Regional-Scale Flows in Mountainous Terrain

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4146689
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    contributor authorBossert, James E.
    contributor authorSheaffer, John D.
    contributor authorReiter, Elmar R.
    date accessioned2017-06-09T14:02:44Z
    date available2017-06-09T14:02:44Z
    date copyright1989/07/01
    date issued1989
    identifier issn0894-8763
    identifier otherams-11459.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4146689
    description abstractMountaintop data from remote stations in the central Rocky Mountains have been used to analyze terrain-induced regional (meso-? to meso-α) scale circulation patterns. The circulation consists of a diurnally oscillating wind regime, varying between daytime inflow toward, and nocturnal outflow from, the highest terrain. Both individual case days and longer term averages reveal these circulation characteristics. The persistence and broadscale organization of nocturnal outflow at mountaintop, well removed from valley drainage processes, demonstrates that this flow is part of a distinct regime within the hierarchy of terrain-induced wind systems. The diurnal cycle of summertime convective storm development imparts a strong influence upon regional-scale circulation patterns. Subcloud cooling processes, associated with deep moist convection, alter the circulation by producing early and abrupt shifts in the regional winds from an inflow to outflow direction. These wind events occur frequently when moist conditions prevail over the central Rocky Mountains. Atmospheric soundings suggest that significant differences occur in the vertical profile of the topographically influenced layer, depending upon the dominant role of either latent or radiative forcing.
    publisherAmerican Meteorological Society
    titleAspects of Regional-Scale Flows in Mountainous Terrain
    typeJournal Paper
    journal volume28
    journal issue7
    journal titleJournal of Applied Meteorology
    identifier doi10.1175/1520-0450(1989)028<0590:AORSFI>2.0.CO;2
    journal fristpage590
    journal lastpage601
    treeJournal of Applied Meteorology:;1989:;volume( 028 ):;issue: 007
    contenttypeFulltext
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