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    Estimation of Cloud Physical Parameters from Airborne Solar Spectral Reflectance Measurements for Stratocumulus Clouds

    Source: Journal of the Atmospheric Sciences:;1995:;Volume( 052 ):;issue: 020::page 3556
    Author:
    Asano, Shoji
    ,
    Shiobara, Masataka
    ,
    Uchiyama, Akihiro
    DOI: 10.1175/1520-0469(1995)052<3556:EOCPPF>2.0.CO;2
    Publisher: American Meteorological Society
    Abstract: A new method is proposed to retrieve various cloud physical parameters of water clouds from the solar-flux reflectances at four wavelengths measured by using the airborne Multi-channel Cloud Pyranometer (MCP) system. The MCP system was designed to measure the spectral reflectances at nine wavelengths in the visible and near-infrared region. The estimation procedure assumes a locally plane-parallel and vertically homogeneous water-cloud layer with monomodal particle size distributions of a fixed width. The cloud optical thickness τ500 and the effective particle radius re, of the water-cloud layer can be simultaneously retrieved from the MCP reflectances measured at the visible channel of ?=500 nm and at the near-infrared channel of ?=1650 nm. Under the assumption that cloud pressure height is known, the cloud liquid water content (LWC) can then be retrieved from the MCP reflectance at the oxygen absorption-band channel cantered at ?=760 nm. Finally, the in-cloud water vapor amount uH2O can be estimated from the MCP reflectance at the water vapor absorption-band channel centered at ?=938 nm. Using these directly retrieved parameters, we can estimate byproduct parameters such as integrated liquid water path, cloud particle concentration, and geometrical thickness of the homogeneous cloud layer. A reliably applicable range of the present method was estimated to be 1≤ on the other hand, coalescence might be dominant in thick clouds in the mature stage with precipitation.
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      Estimation of Cloud Physical Parameters from Airborne Solar Spectral Reflectance Measurements for Stratocumulus Clouds

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4157955
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    contributor authorAsano, Shoji
    contributor authorShiobara, Masataka
    contributor authorUchiyama, Akihiro
    date accessioned2017-06-09T14:33:27Z
    date available2017-06-09T14:33:27Z
    date copyright1995/10/01
    date issued1995
    identifier issn0022-4928
    identifier otherams-21599.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4157955
    description abstractA new method is proposed to retrieve various cloud physical parameters of water clouds from the solar-flux reflectances at four wavelengths measured by using the airborne Multi-channel Cloud Pyranometer (MCP) system. The MCP system was designed to measure the spectral reflectances at nine wavelengths in the visible and near-infrared region. The estimation procedure assumes a locally plane-parallel and vertically homogeneous water-cloud layer with monomodal particle size distributions of a fixed width. The cloud optical thickness τ500 and the effective particle radius re, of the water-cloud layer can be simultaneously retrieved from the MCP reflectances measured at the visible channel of ?=500 nm and at the near-infrared channel of ?=1650 nm. Under the assumption that cloud pressure height is known, the cloud liquid water content (LWC) can then be retrieved from the MCP reflectance at the oxygen absorption-band channel cantered at ?=760 nm. Finally, the in-cloud water vapor amount uH2O can be estimated from the MCP reflectance at the water vapor absorption-band channel centered at ?=938 nm. Using these directly retrieved parameters, we can estimate byproduct parameters such as integrated liquid water path, cloud particle concentration, and geometrical thickness of the homogeneous cloud layer. A reliably applicable range of the present method was estimated to be 1≤ on the other hand, coalescence might be dominant in thick clouds in the mature stage with precipitation.
    publisherAmerican Meteorological Society
    titleEstimation of Cloud Physical Parameters from Airborne Solar Spectral Reflectance Measurements for Stratocumulus Clouds
    typeJournal Paper
    journal volume52
    journal issue20
    journal titleJournal of the Atmospheric Sciences
    identifier doi10.1175/1520-0469(1995)052<3556:EOCPPF>2.0.CO;2
    journal fristpage3556
    journal lastpage3576
    treeJournal of the Atmospheric Sciences:;1995:;Volume( 052 ):;issue: 020
    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