YaBeSH Engineering and Technology Library

    • Journals
    • PaperQuest
    • YSE Standards
    • YaBeSH
    • Login
    View Item 
    •   YE&T Library
    • AMS
    • Journal of the Atmospheric Sciences
    • View Item
    •   YE&T Library
    • AMS
    • Journal of the Atmospheric Sciences
    • View Item
    • All Fields
    • Source Title
    • Year
    • Publisher
    • Title
    • Subject
    • Author
    • DOI
    • ISBN
    Advanced Search
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Archive

    Surface-Layer Fluxes, Profiles, and Turbulence Measurements over Uniform Terrain under Near-Neutral Conditions

    Source: Journal of the Atmospheric Sciences:;1996:;Volume( 053 ):;issue: 007::page 1029
    Author:
    Oncley, Steven P.
    ,
    Friehe, Carl A.
    ,
    Larue, John C.
    ,
    Businger, Joost A.
    ,
    Itsweire, Eric C.
    ,
    Chang, Sam S.
    DOI: 10.1175/1520-0469(1996)053<1029:SLFPAT>2.0.CO;2
    Publisher: American Meteorological Society
    Abstract: An atmospheric surface-layer experiment over a nearly uniform plowed field was performed to determine the constants in the flux-profile similarity formulas, particularly the von Kármán constant. New instruments were constructed to minimize flow distortion effects on the turbulence measurements and to provide high-resolution gradient measurements. In addition, a hot-wire anemometer directly measured the turbulent kinetic energy dissipation rate. An average value of the von Kármán constant of 0.365 ± 0.015 was obtained from 91 runs (31 h) in near-neutral stability conditions. However, four near-neutral runs when snow covered the ground gave an average value of 0.42. This result suggests that the von Kármán constant depends on the roughness Reynolds number, which may resolve some of the differences in previous determinations over different surfaces. The one-dimensional Kolmogorov inertial subrange constant was found to have a value of 0.54 ± 0.03, slightly larger than previous results. The flux-profile relations for momentum and temperature variance were evaluated, and humidity variance data behaved similarly to temperature. Dissipation of turbulent kinetic energy was found to be less than production under near-neutral conditions, which suggests that turbulent or pressure transport may be significant.
    • Download: (1.280Mb)
    • Show Full MetaData Hide Full MetaData
    • Item Order
    • Go To Publisher
    • Price: 5000 Rial
    • Statistics

      Surface-Layer Fluxes, Profiles, and Turbulence Measurements over Uniform Terrain under Near-Neutral Conditions

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/4158104
    Collections
    • Journal of the Atmospheric Sciences

    Show full item record

    contributor authorOncley, Steven P.
    contributor authorFriehe, Carl A.
    contributor authorLarue, John C.
    contributor authorBusinger, Joost A.
    contributor authorItsweire, Eric C.
    contributor authorChang, Sam S.
    date accessioned2017-06-09T14:33:47Z
    date available2017-06-09T14:33:47Z
    date copyright1996/04/01
    date issued1996
    identifier issn0022-4928
    identifier otherams-21732.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4158104
    description abstractAn atmospheric surface-layer experiment over a nearly uniform plowed field was performed to determine the constants in the flux-profile similarity formulas, particularly the von Kármán constant. New instruments were constructed to minimize flow distortion effects on the turbulence measurements and to provide high-resolution gradient measurements. In addition, a hot-wire anemometer directly measured the turbulent kinetic energy dissipation rate. An average value of the von Kármán constant of 0.365 ± 0.015 was obtained from 91 runs (31 h) in near-neutral stability conditions. However, four near-neutral runs when snow covered the ground gave an average value of 0.42. This result suggests that the von Kármán constant depends on the roughness Reynolds number, which may resolve some of the differences in previous determinations over different surfaces. The one-dimensional Kolmogorov inertial subrange constant was found to have a value of 0.54 ± 0.03, slightly larger than previous results. The flux-profile relations for momentum and temperature variance were evaluated, and humidity variance data behaved similarly to temperature. Dissipation of turbulent kinetic energy was found to be less than production under near-neutral conditions, which suggests that turbulent or pressure transport may be significant.
    publisherAmerican Meteorological Society
    titleSurface-Layer Fluxes, Profiles, and Turbulence Measurements over Uniform Terrain under Near-Neutral Conditions
    typeJournal Paper
    journal volume53
    journal issue7
    journal titleJournal of the Atmospheric Sciences
    identifier doi10.1175/1520-0469(1996)053<1029:SLFPAT>2.0.CO;2
    journal fristpage1029
    journal lastpage1044
    treeJournal of the Atmospheric Sciences:;1996:;Volume( 053 ):;issue: 007
    contenttypeFulltext
    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
    yabeshDSpacePersian
     
    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
    yabeshDSpacePersian