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    Diagnostic Equations for the Stable Boundary Layer Height: Evaluation and Dimensional Analysis

    Source: Journal of Applied Meteorology and Climatology:;2007:;volume( 046 ):;issue: 002::page 212
    Author:
    Steeneveld, G. J.
    ,
    van de Wiel, B. J. H.
    ,
    Holtslag, A. A. M.
    DOI: 10.1175/JAM2454.1
    Publisher: American Meteorological Society
    Abstract: The performance of diagnostic equations for the stable boundary layer height h is evaluated with four observational datasets that represent a broad range of latitudes, land use, and surface roughness. In addition, large-eddy simulation results are used. Special care is given to data-quality selection. The diagnostic equations evaluated are so-called multilimit equations as derived by Zilitinkevich and coworkers in a number of papers. It appears that these equations show a serious negative bias, especially for h < 100 m, and it was found that the parameters involved could not be determined uniquely with calibration. As an alternative, dimensional analysis is used here to derive a formulation for h that is more robust. The formulation depends on the surface friction velocity u*, surface buoyancy flux Bs, Coriolis parameter, and the free-flow stability N. The relevance of the Coriolis parameter for the boundary layer height estimation in practice is also discussed. If the Coriolis parameter is ignored, two major regimes are found: h ? u*/N for weakly stable conditions and h ? (|Bs|/N?3)1/2 for moderate to very stable conditions.
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      Diagnostic Equations for the Stable Boundary Layer Height: Evaluation and Dimensional Analysis

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4216602
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    contributor authorSteeneveld, G. J.
    contributor authorvan de Wiel, B. J. H.
    contributor authorHoltslag, A. A. M.
    date accessioned2017-06-09T16:48:06Z
    date available2017-06-09T16:48:06Z
    date copyright2007/02/01
    date issued2007
    identifier issn1558-8424
    identifier otherams-74383.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4216602
    description abstractThe performance of diagnostic equations for the stable boundary layer height h is evaluated with four observational datasets that represent a broad range of latitudes, land use, and surface roughness. In addition, large-eddy simulation results are used. Special care is given to data-quality selection. The diagnostic equations evaluated are so-called multilimit equations as derived by Zilitinkevich and coworkers in a number of papers. It appears that these equations show a serious negative bias, especially for h < 100 m, and it was found that the parameters involved could not be determined uniquely with calibration. As an alternative, dimensional analysis is used here to derive a formulation for h that is more robust. The formulation depends on the surface friction velocity u*, surface buoyancy flux Bs, Coriolis parameter, and the free-flow stability N. The relevance of the Coriolis parameter for the boundary layer height estimation in practice is also discussed. If the Coriolis parameter is ignored, two major regimes are found: h ? u*/N for weakly stable conditions and h ? (|Bs|/N?3)1/2 for moderate to very stable conditions.
    publisherAmerican Meteorological Society
    titleDiagnostic Equations for the Stable Boundary Layer Height: Evaluation and Dimensional Analysis
    typeJournal Paper
    journal volume46
    journal issue2
    journal titleJournal of Applied Meteorology and Climatology
    identifier doi10.1175/JAM2454.1
    journal fristpage212
    journal lastpage225
    treeJournal of Applied Meteorology and Climatology:;2007:;volume( 046 ):;issue: 002
    contenttypeFulltext
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