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    Doppler Lidar Observations of the Mixing Height in Indianapolis Using an Automated Composite Fuzzy Logic Approach

    Source: Journal of Atmospheric and Oceanic Technology:;2017:;volume 035:;issue 003::page 473
    Author:
    Bonin, Timothy A.
    ,
    Carroll, Brian J.
    ,
    Hardesty, R. Michael
    ,
    Brewer, W. Alan
    ,
    Hajny, Kristian
    ,
    Salmon, Olivia E.
    ,
    Shepson, Paul B.
    DOI: 10.1175/JTECH-D-17-0159.1
    Publisher: American Meteorological Society
    Abstract: AbstractA Halo Photonics Stream Line XR Doppler lidar has been deployed for the Indianapolis Flux Experiment (INFLUX) to measure profiles of the mean horizontal wind and the mixing layer height for quantification of greenhouse gas emissions from the urban area. To measure the mixing layer height continuously and autonomously, a novel composite fuzzy logic approach has been developed that combines information from various scan types, including conical and vertical-slice scans and zenith stares, to determine a unified measurement of the mixing height and its uncertainty. The composite approach uses the strengths of each measurement strategy to overcome the limitations of others so that a complete representation of turbulent mixing is made in the lowest km, depending on clouds and aerosol distribution. Additionally, submeso nonturbulent motions are identified from zenith stares and removed from the analysis, as these motions can lead to an overestimate of the mixing height. The mixing height is compared with in situ profile measurements from a research aircraft for validation. To demonstrate the utility of the measurements, statistics of the mixing height and its diurnal and annual variability for 2016 are also presented. The annual cycle is clearly captured, with the largest and smallest afternoon mixing heights observed at the summer and winter solstices, respectively. The diurnal cycle of the mixing layer is affected by the mean wind, growing slower in the morning and decaying more rapidly in the evening with lighter winds.
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      Doppler Lidar Observations of the Mixing Height in Indianapolis Using an Automated Composite Fuzzy Logic Approach

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4261076
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    • Journal of Atmospheric and Oceanic Technology

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    contributor authorBonin, Timothy A.
    contributor authorCarroll, Brian J.
    contributor authorHardesty, R. Michael
    contributor authorBrewer, W. Alan
    contributor authorHajny, Kristian
    contributor authorSalmon, Olivia E.
    contributor authorShepson, Paul B.
    date accessioned2019-09-19T10:03:35Z
    date available2019-09-19T10:03:35Z
    date copyright12/19/2017 12:00:00 AM
    date issued2017
    identifier otherjtech-d-17-0159.1.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4261076
    description abstractAbstractA Halo Photonics Stream Line XR Doppler lidar has been deployed for the Indianapolis Flux Experiment (INFLUX) to measure profiles of the mean horizontal wind and the mixing layer height for quantification of greenhouse gas emissions from the urban area. To measure the mixing layer height continuously and autonomously, a novel composite fuzzy logic approach has been developed that combines information from various scan types, including conical and vertical-slice scans and zenith stares, to determine a unified measurement of the mixing height and its uncertainty. The composite approach uses the strengths of each measurement strategy to overcome the limitations of others so that a complete representation of turbulent mixing is made in the lowest km, depending on clouds and aerosol distribution. Additionally, submeso nonturbulent motions are identified from zenith stares and removed from the analysis, as these motions can lead to an overestimate of the mixing height. The mixing height is compared with in situ profile measurements from a research aircraft for validation. To demonstrate the utility of the measurements, statistics of the mixing height and its diurnal and annual variability for 2016 are also presented. The annual cycle is clearly captured, with the largest and smallest afternoon mixing heights observed at the summer and winter solstices, respectively. The diurnal cycle of the mixing layer is affected by the mean wind, growing slower in the morning and decaying more rapidly in the evening with lighter winds.
    publisherAmerican Meteorological Society
    titleDoppler Lidar Observations of the Mixing Height in Indianapolis Using an Automated Composite Fuzzy Logic Approach
    typeJournal Paper
    journal volume35
    journal issue3
    journal titleJournal of Atmospheric and Oceanic Technology
    identifier doi10.1175/JTECH-D-17-0159.1
    journal fristpage473
    journal lastpage490
    treeJournal of Atmospheric and Oceanic Technology:;2017:;volume 035:;issue 003
    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
    yabeshDSpacePersian