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    Polarimetric Radar Analysis of Raindrop Size Variability in Maritime and Continental Clouds

    Source: Journal of Applied Meteorology and Climatology:;2011:;volume( 050 ):;issue: 009::page 1970
    Author:
    Wilson, James W.
    ,
    Knight, Charles A.
    ,
    Tessendorf, Sarah A.
    ,
    Weeks, Courtney
    DOI: 10.1175/2011JAMC2683.1
    Publisher: American Meteorological Society
    Abstract: uring the Queensland Cloud Seeding Research Program, the ?CP2? polarimetric radar parameter differential radar reflectivity Zdr was used to examine the raindrop size evolution in both maritime and continental clouds. The focus of this paper is to examine the natural variability of the drop size distribution. The primary finding is that there are two basic raindrop size evolutions, one associated with continental air masses characterized by relatively high aerosol concentrations and long air trajectories over land and the other associated with maritime air masses with lower aerosol concentrations. The size evolution difference is during the growth stage of the radar echoes. The differential radar reflectivity in the growing continental clouds is dominated by large raindrops, whereas in the maritime clouds differential reflectivity is dominated by small raindrops and drizzle. The drop size evolution in many of the maritime air masses was very similar to those observed in the maritime air of the Caribbean Sea observed with the NCAR S-band polarimetric radar (S-Pol) during the Rain in Cumulus over the Ocean (RICO) experiment. Because the tops of the Queensland continental clouds ascended almost 2 times as fast as the maritime ones in their growth stage, both dynamical and aerosol factors may be important for the systematic difference in drop size evolution. Recommendations are advanced for future field programs to understand better the causes for the observed variability in drop size evolution. Also, considering the natural variability in drop size evolution, comments are provided on conducting and evaluating cloud seeding experiments.
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      Polarimetric Radar Analysis of Raindrop Size Variability in Maritime and Continental Clouds

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4213588
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    contributor authorWilson, James W.
    contributor authorKnight, Charles A.
    contributor authorTessendorf, Sarah A.
    contributor authorWeeks, Courtney
    date accessioned2017-06-09T16:39:22Z
    date available2017-06-09T16:39:22Z
    date copyright2011/09/01
    date issued2011
    identifier issn1558-8424
    identifier otherams-71671.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4213588
    description abstracturing the Queensland Cloud Seeding Research Program, the ?CP2? polarimetric radar parameter differential radar reflectivity Zdr was used to examine the raindrop size evolution in both maritime and continental clouds. The focus of this paper is to examine the natural variability of the drop size distribution. The primary finding is that there are two basic raindrop size evolutions, one associated with continental air masses characterized by relatively high aerosol concentrations and long air trajectories over land and the other associated with maritime air masses with lower aerosol concentrations. The size evolution difference is during the growth stage of the radar echoes. The differential radar reflectivity in the growing continental clouds is dominated by large raindrops, whereas in the maritime clouds differential reflectivity is dominated by small raindrops and drizzle. The drop size evolution in many of the maritime air masses was very similar to those observed in the maritime air of the Caribbean Sea observed with the NCAR S-band polarimetric radar (S-Pol) during the Rain in Cumulus over the Ocean (RICO) experiment. Because the tops of the Queensland continental clouds ascended almost 2 times as fast as the maritime ones in their growth stage, both dynamical and aerosol factors may be important for the systematic difference in drop size evolution. Recommendations are advanced for future field programs to understand better the causes for the observed variability in drop size evolution. Also, considering the natural variability in drop size evolution, comments are provided on conducting and evaluating cloud seeding experiments.
    publisherAmerican Meteorological Society
    titlePolarimetric Radar Analysis of Raindrop Size Variability in Maritime and Continental Clouds
    typeJournal Paper
    journal volume50
    journal issue9
    journal titleJournal of Applied Meteorology and Climatology
    identifier doi10.1175/2011JAMC2683.1
    journal fristpage1970
    journal lastpage1980
    treeJournal of Applied Meteorology and Climatology:;2011:;volume( 050 ):;issue: 009
    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
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