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    A New Look at Rainfall Fluctuations and Scaling Properties of Spatial Rainfall Using Orthogonal Wavelets

    Source: Journal of Applied Meteorology:;1993:;volume( 032 ):;issue: 002::page 209
    Author:
    Kumar, Praveen
    ,
    Foufoula-Georgiou, Efi
    DOI: 10.1175/1520-0450(1993)032<0209:ANLARF>2.0.CO;2
    Publisher: American Meteorological Society
    Abstract: It has been observed that the finite-dimensional distribution functions of rainfall cannot obey simple scaling laws due to rainfall intermittency (mixed distribution with an atom at zero) and the probability of rainfall being an increasing function of area. Although rainfall fluctuations do not suffer these limitations, it is interesting to note that very few attempts have been made to study them in terms of their self-similarity characteristics. This is due to the lack of unambiguous definition of fluctuations in multidimensions. This paper shows that wavelet transforms offer a convenient and consistent method for the decomposition of inhomogeneous and anisotropic rainfall fields in two dimensions and that the components of this decomposition can be looked at as fluctuations of the rainfall field. It is also shown that under some mild assumptions, the component fields can be treated as homogeneous and thus are amenable to second-order analysis, which can provide useful insight into the nature of the process. The fact that wavelet transforms are a space-scale method also provides a convenient tool to study scaling characteristics of the process. Orthogonal wavelets are used, and these properties are investigated for a squall-line storm to study the presence of self-similarity.
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      A New Look at Rainfall Fluctuations and Scaling Properties of Spatial Rainfall Using Orthogonal Wavelets

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4147136
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    contributor authorKumar, Praveen
    contributor authorFoufoula-Georgiou, Efi
    date accessioned2017-06-09T14:04:11Z
    date available2017-06-09T14:04:11Z
    date copyright1993/02/01
    date issued1993
    identifier issn0894-8763
    identifier otherams-11861.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4147136
    description abstractIt has been observed that the finite-dimensional distribution functions of rainfall cannot obey simple scaling laws due to rainfall intermittency (mixed distribution with an atom at zero) and the probability of rainfall being an increasing function of area. Although rainfall fluctuations do not suffer these limitations, it is interesting to note that very few attempts have been made to study them in terms of their self-similarity characteristics. This is due to the lack of unambiguous definition of fluctuations in multidimensions. This paper shows that wavelet transforms offer a convenient and consistent method for the decomposition of inhomogeneous and anisotropic rainfall fields in two dimensions and that the components of this decomposition can be looked at as fluctuations of the rainfall field. It is also shown that under some mild assumptions, the component fields can be treated as homogeneous and thus are amenable to second-order analysis, which can provide useful insight into the nature of the process. The fact that wavelet transforms are a space-scale method also provides a convenient tool to study scaling characteristics of the process. Orthogonal wavelets are used, and these properties are investigated for a squall-line storm to study the presence of self-similarity.
    publisherAmerican Meteorological Society
    titleA New Look at Rainfall Fluctuations and Scaling Properties of Spatial Rainfall Using Orthogonal Wavelets
    typeJournal Paper
    journal volume32
    journal issue2
    journal titleJournal of Applied Meteorology
    identifier doi10.1175/1520-0450(1993)032<0209:ANLARF>2.0.CO;2
    journal fristpage209
    journal lastpage222
    treeJournal of Applied Meteorology:;1993:;volume( 032 ):;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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