contributor author | Kumar, Praveen | |
contributor author | Foufoula-Georgiou, Efi | |
date accessioned | 2017-06-09T14:04:11Z | |
date available | 2017-06-09T14:04:11Z | |
date copyright | 1993/02/01 | |
date issued | 1993 | |
identifier issn | 0894-8763 | |
identifier other | ams-11861.pdf | |
identifier uri | http://onlinelibrary.yabesh.ir/handle/yetl/4147136 | |
description 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. | |
publisher | American Meteorological Society | |
title | A New Look at Rainfall Fluctuations and Scaling Properties of Spatial Rainfall Using Orthogonal Wavelets | |
type | Journal Paper | |
journal volume | 32 | |
journal issue | 2 | |
journal title | Journal of Applied Meteorology | |
identifier doi | 10.1175/1520-0450(1993)032<0209:ANLARF>2.0.CO;2 | |
journal fristpage | 209 | |
journal lastpage | 222 | |
tree | Journal of Applied Meteorology:;1993:;volume( 032 ):;issue: 002 | |
contenttype | Fulltext | |