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    Spatially Variable Advection Correction of Radar Data. Part I: Theoretical Considerations

    Source: Journal of the Atmospheric Sciences:;2010:;Volume( 067 ):;issue: 011::page 3445
    Author:
    Shapiro, Alan
    ,
    Willingham, Katherine M.
    ,
    Potvin, Corey K.
    DOI: 10.1175/2010JAS3465.1
    Publisher: American Meteorological Society
    Abstract: Radar data?based analysis products, such as accumulated rainfall maps, dual-Doppler wind syntheses, and thermodynamic retrievals, are prone to substantial error if the temporal sampling interval is too coarse. Techniques to mitigate these errors typically make use of advection-correction procedures (space-to-time conversions) in which the analyzed radial velocity or reflectivity field is idealized as a pattern of unchanging form that translates horizontally at constant speed. The present study is concerned with an advection-correction procedure for the reflectivity field in which the pattern-advection components vary spatially. The analysis is phrased as a variational problem in which errors in the frozen-turbulence constraint are minimized subject to smoothness constraints. The Euler?Lagrange equations for this problem are derived and a solution is proposed in which the trajectories, pattern-advection fields, and reflectivity field are analyzed simultaneously using a combined analytical and numerical procedure. The potential for solution nonuniqueness is explored.
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      Spatially Variable Advection Correction of Radar Data. Part I: Theoretical Considerations

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4212019
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    • Journal of the Atmospheric Sciences

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    contributor authorShapiro, Alan
    contributor authorWillingham, Katherine M.
    contributor authorPotvin, Corey K.
    date accessioned2017-06-09T16:34:30Z
    date available2017-06-09T16:34:30Z
    date copyright2010/11/01
    date issued2010
    identifier issn0022-4928
    identifier otherams-70258.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4212019
    description abstractRadar data?based analysis products, such as accumulated rainfall maps, dual-Doppler wind syntheses, and thermodynamic retrievals, are prone to substantial error if the temporal sampling interval is too coarse. Techniques to mitigate these errors typically make use of advection-correction procedures (space-to-time conversions) in which the analyzed radial velocity or reflectivity field is idealized as a pattern of unchanging form that translates horizontally at constant speed. The present study is concerned with an advection-correction procedure for the reflectivity field in which the pattern-advection components vary spatially. The analysis is phrased as a variational problem in which errors in the frozen-turbulence constraint are minimized subject to smoothness constraints. The Euler?Lagrange equations for this problem are derived and a solution is proposed in which the trajectories, pattern-advection fields, and reflectivity field are analyzed simultaneously using a combined analytical and numerical procedure. The potential for solution nonuniqueness is explored.
    publisherAmerican Meteorological Society
    titleSpatially Variable Advection Correction of Radar Data. Part I: Theoretical Considerations
    typeJournal Paper
    journal volume67
    journal issue11
    journal titleJournal of the Atmospheric Sciences
    identifier doi10.1175/2010JAS3465.1
    journal fristpage3445
    journal lastpage3456
    treeJournal of the Atmospheric Sciences:;2010:;Volume( 067 ):;issue: 011
    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