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    Spectral Density of Cloud Liquid Water Content at High Frequencies

    Source: Journal of the Atmospheric Sciences:;2001:;Volume( 058 ):;issue: 005::page 497
    Author:
    Gerber, H.
    ,
    Jensen, J. B.
    ,
    Davis, A. B.
    ,
    Marshak, A.
    ,
    Wiscombe, W. J.
    DOI: 10.1175/1520-0469(2001)058<0497:SDOCLW>2.0.CO;2
    Publisher: American Meteorological Society
    Abstract: Aircraft measurements of liquid water content (LWC) made at sampling frequencies of 1 and 2 kHz with a particle volume monitor (PVM) probe from horizontal traverses in stratocumulus clouds during the Southern Ocean Cloud Experiment and cumulus clouds during the Small Cumulus Microphysics Study are described. The spectral density of the LWC measurements is calculated and compared to the ?5/3 scaling law. The effect of PVM sampling noise is found to be small in most cases. Most measurements follow approximately the ?5/3 law until cloud scales decrease below about 5 m in length. Below this length LWC variance can exceed that predicted by the ?5/3 law. It is suggested that the enhanced LWC variance at small scales is related to entrainment of environmental air into the clouds, which changes primarily the droplet concentration.
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      Spectral Density of Cloud Liquid Water Content at High Frequencies

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4159274
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    • Journal of the Atmospheric Sciences

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    contributor authorGerber, H.
    contributor authorJensen, J. B.
    contributor authorDavis, A. B.
    contributor authorMarshak, A.
    contributor authorWiscombe, W. J.
    date accessioned2017-06-09T14:36:43Z
    date available2017-06-09T14:36:43Z
    date copyright2001/03/01
    date issued2001
    identifier issn0022-4928
    identifier otherams-22786.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4159274
    description abstractAircraft measurements of liquid water content (LWC) made at sampling frequencies of 1 and 2 kHz with a particle volume monitor (PVM) probe from horizontal traverses in stratocumulus clouds during the Southern Ocean Cloud Experiment and cumulus clouds during the Small Cumulus Microphysics Study are described. The spectral density of the LWC measurements is calculated and compared to the ?5/3 scaling law. The effect of PVM sampling noise is found to be small in most cases. Most measurements follow approximately the ?5/3 law until cloud scales decrease below about 5 m in length. Below this length LWC variance can exceed that predicted by the ?5/3 law. It is suggested that the enhanced LWC variance at small scales is related to entrainment of environmental air into the clouds, which changes primarily the droplet concentration.
    publisherAmerican Meteorological Society
    titleSpectral Density of Cloud Liquid Water Content at High Frequencies
    typeJournal Paper
    journal volume58
    journal issue5
    journal titleJournal of the Atmospheric Sciences
    identifier doi10.1175/1520-0469(2001)058<0497:SDOCLW>2.0.CO;2
    journal fristpage497
    journal lastpage503
    treeJournal of the Atmospheric Sciences:;2001:;Volume( 058 ):;issue: 005
    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