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    Measurements of Boundary Layer Profiles with In Situ Sensors and Doppler Lidar

    Source: Journal of Atmospheric and Oceanic Technology:;2008:;volume( 025 ):;issue: 008::page 1328
    Author:
    Frehlich, Rod
    ,
    Meillier, Yannick
    ,
    Jensen, Michael L.
    DOI: 10.1175/2007JTECHA963.1
    Publisher: American Meteorological Society
    Abstract: A new in situ measurement system and lidar processing algorithms were developed for improved measurements of boundary layer profiles. The first comparisons of simultaneous Doppler lidar?derived profiles of the key turbulence statistics of the two orthogonal horizontal velocity components (longitudinal and transverse) are presented. The instrument requirements for accurate observations of stably stratified turbulence were determined. A region of stably stratified low turbulence with constant gradients of temperature and velocity was observed above the nocturnal boundary layer using high-rate sensors. The important turbulence parameters were estimated, and turbulence spectra were consistent with new theoretical descriptions of stratified turbulence. The impact of removing the larger-scale velocity features in Doppler lidar estimates of turbulent velocity variance and length scales was investigated. The Doppler lidar?derived estimates of energy dissipation rate ? were found to be insensitive to spatial filtering of the large-scale atmospheric processes. The in situ and lidar-derived profiles were compared for the stable boundary layer in a suburban environment.
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      Measurements of Boundary Layer Profiles with In Situ Sensors and Doppler Lidar

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4207438
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    contributor authorFrehlich, Rod
    contributor authorMeillier, Yannick
    contributor authorJensen, Michael L.
    date accessioned2017-06-09T16:20:38Z
    date available2017-06-09T16:20:38Z
    date copyright2008/08/01
    date issued2008
    identifier issn0739-0572
    identifier otherams-66135.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4207438
    description abstractA new in situ measurement system and lidar processing algorithms were developed for improved measurements of boundary layer profiles. The first comparisons of simultaneous Doppler lidar?derived profiles of the key turbulence statistics of the two orthogonal horizontal velocity components (longitudinal and transverse) are presented. The instrument requirements for accurate observations of stably stratified turbulence were determined. A region of stably stratified low turbulence with constant gradients of temperature and velocity was observed above the nocturnal boundary layer using high-rate sensors. The important turbulence parameters were estimated, and turbulence spectra were consistent with new theoretical descriptions of stratified turbulence. The impact of removing the larger-scale velocity features in Doppler lidar estimates of turbulent velocity variance and length scales was investigated. The Doppler lidar?derived estimates of energy dissipation rate ? were found to be insensitive to spatial filtering of the large-scale atmospheric processes. The in situ and lidar-derived profiles were compared for the stable boundary layer in a suburban environment.
    publisherAmerican Meteorological Society
    titleMeasurements of Boundary Layer Profiles with In Situ Sensors and Doppler Lidar
    typeJournal Paper
    journal volume25
    journal issue8
    journal titleJournal of Atmospheric and Oceanic Technology
    identifier doi10.1175/2007JTECHA963.1
    journal fristpage1328
    journal lastpage1340
    treeJournal of Atmospheric and Oceanic Technology:;2008:;volume( 025 ):;issue: 008
    contenttypeFulltext
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    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