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    A Robust Estimator of Rainfall Rate Using Differential Reflectivity

    Source: Journal of Atmospheric and Oceanic Technology:;1994:;volume( 011 ):;issue: 002::page 586
    Author:
    Gorgucci, Eugenio
    ,
    Scarchilli, Gianfranco
    ,
    Chandrasekar, V.
    DOI: 10.1175/1520-0426(1994)011<0586:AREORR>2.0.CO;2
    Publisher: American Meteorological Society
    Abstract: Conventional estimator of rainfall rate using reflectivity factor and differential reflectivity ZDR becomes unstable when the measured values of ZDR are small due to measurement errors. An alternate estimator of rainfall rate using reflectivity factor and ZDR is derived, so that this estimator is fairly robust over the full dynamic range of reflectivity factor and ZDR. Simulations are used to study the error structure of this robust estimator in comparison with the conventional estimator of rainfall rate. It is shown that the alternate estimator performs better than the conventional estimator of rainfall rate at all rainfall values. In particular the largest improvement of this estimator is proved to be in light rain. The robust estimator is obtained as a direct regression of rainfall rate against reflectivity factor and ZDR instead of solving for the drop size distribution.
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      A Robust Estimator of Rainfall Rate Using Differential Reflectivity

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4232584
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    contributor authorGorgucci, Eugenio
    contributor authorScarchilli, Gianfranco
    contributor authorChandrasekar, V.
    date accessioned2017-06-09T17:38:42Z
    date available2017-06-09T17:38:42Z
    date copyright1994/04/01
    date issued1994
    identifier issn0739-0572
    identifier otherams-913.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4232584
    description abstractConventional estimator of rainfall rate using reflectivity factor and differential reflectivity ZDR becomes unstable when the measured values of ZDR are small due to measurement errors. An alternate estimator of rainfall rate using reflectivity factor and ZDR is derived, so that this estimator is fairly robust over the full dynamic range of reflectivity factor and ZDR. Simulations are used to study the error structure of this robust estimator in comparison with the conventional estimator of rainfall rate. It is shown that the alternate estimator performs better than the conventional estimator of rainfall rate at all rainfall values. In particular the largest improvement of this estimator is proved to be in light rain. The robust estimator is obtained as a direct regression of rainfall rate against reflectivity factor and ZDR instead of solving for the drop size distribution.
    publisherAmerican Meteorological Society
    titleA Robust Estimator of Rainfall Rate Using Differential Reflectivity
    typeJournal Paper
    journal volume11
    journal issue2
    journal titleJournal of Atmospheric and Oceanic Technology
    identifier doi10.1175/1520-0426(1994)011<0586:AREORR>2.0.CO;2
    journal fristpage586
    journal lastpage592
    treeJournal of Atmospheric and Oceanic Technology:;1994:;volume( 011 ):;issue: 002
    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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