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    Thermodynamics of Icing Cylinder for Measurements of Liquid Water Content in Supercooled Clouds

    Source: Journal of Atmospheric and Oceanic Technology:;2001:;volume( 018 ):;issue: 004::page 543
    Author:
    Mazin, I. P.
    ,
    Korolev, A. V.
    ,
    Heymsfield, A.
    ,
    Isaac, G. A.
    ,
    Cober, S. G.
    DOI: 10.1175/1520-0426(2001)018<0543:TOICFM>2.0.CO;2
    Publisher: American Meteorological Society
    Abstract: The Rosemount Icing Detector (RICE) has been used extensively over the last three decades for aircraft measurements of the rate of ice riming in supercooled liquid and mixed clouds. Because of difficulties related to calibration and postprocessing, the RICE probe was mainly used as an indicator of the presence of supercooled liquid water. The accuracy of the RICE probe for measurements of supercooled liquid water content is studied here. The theory of ice accretion on an unheated cylinder is applied to the RICE probe. A steady-state heat balance on the surface of a riming cylinder is considered in detail. It is shown that the threshold sensitivity of the RICE probe is limited by the rate of sublimation of ice and it may exceed 0.01 g m?3 at airspeed 200 m s?1. The rate of ice sublimation limits the use of the RICE probe for measurements of low liquid water contents in clouds. The maximum possible measured liquid water content is restricted by the Ludlam limit. A new calibration technique of the RICE probe, based on the measurements of the rate of ice sublimation in cloud-free air, is developed here. The calibration coefficient derived using the ?sublimation? technique is compared to that obtained using the conventional technique, that is, when ice is accreting on the cylinder. The sublimation technique was found to be more accurate compared to the conventional one. The accuracies of both methods are discussed.
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      Thermodynamics of Icing Cylinder for Measurements of Liquid Water Content in Supercooled Clouds

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4154312
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    • Journal of Atmospheric and Oceanic Technology

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    contributor authorMazin, I. P.
    contributor authorKorolev, A. V.
    contributor authorHeymsfield, A.
    contributor authorIsaac, G. A.
    contributor authorCober, S. G.
    date accessioned2017-06-09T14:22:57Z
    date available2017-06-09T14:22:57Z
    date copyright2001/04/01
    date issued2001
    identifier issn0739-0572
    identifier otherams-1832.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4154312
    description abstractThe Rosemount Icing Detector (RICE) has been used extensively over the last three decades for aircraft measurements of the rate of ice riming in supercooled liquid and mixed clouds. Because of difficulties related to calibration and postprocessing, the RICE probe was mainly used as an indicator of the presence of supercooled liquid water. The accuracy of the RICE probe for measurements of supercooled liquid water content is studied here. The theory of ice accretion on an unheated cylinder is applied to the RICE probe. A steady-state heat balance on the surface of a riming cylinder is considered in detail. It is shown that the threshold sensitivity of the RICE probe is limited by the rate of sublimation of ice and it may exceed 0.01 g m?3 at airspeed 200 m s?1. The rate of ice sublimation limits the use of the RICE probe for measurements of low liquid water contents in clouds. The maximum possible measured liquid water content is restricted by the Ludlam limit. A new calibration technique of the RICE probe, based on the measurements of the rate of ice sublimation in cloud-free air, is developed here. The calibration coefficient derived using the ?sublimation? technique is compared to that obtained using the conventional technique, that is, when ice is accreting on the cylinder. The sublimation technique was found to be more accurate compared to the conventional one. The accuracies of both methods are discussed.
    publisherAmerican Meteorological Society
    titleThermodynamics of Icing Cylinder for Measurements of Liquid Water Content in Supercooled Clouds
    typeJournal Paper
    journal volume18
    journal issue4
    journal titleJournal of Atmospheric and Oceanic Technology
    identifier doi10.1175/1520-0426(2001)018<0543:TOICFM>2.0.CO;2
    journal fristpage543
    journal lastpage558
    treeJournal of Atmospheric and Oceanic Technology:;2001:;volume( 018 ):;issue: 004
    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