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Imperfect Scaling in Distributions of Radar-derived Rainfall Fields : Volume 10, Issue 9 (05/09/2013)

By Van Den Berg, M. J.

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Book Id: WPLBN0004011513
Format Type: PDF Article :
File Size: Pages 38
Reproduction Date: 2015

Title: Imperfect Scaling in Distributions of Radar-derived Rainfall Fields : Volume 10, Issue 9 (05/09/2013)  
Author: Van Den Berg, M. J.
Volume: Vol. 10, Issue 9
Language: English
Subject: Science, Hydrology, Earth
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications


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Delobbe, L., C. Verhoes, N. E., & Van Den Berg, M. J. (2013). Imperfect Scaling in Distributions of Radar-derived Rainfall Fields : Volume 10, Issue 9 (05/09/2013). Retrieved from

Description: Laboratory of Hydrology and Water Management, Ghent University, Coupure links 653, 9000 Ghent, Belgium. Fine scale rainfall observations for modeling exercises are often not available, but rather coarser data derived from a variety of sources are used. Effectively using these data sources in models often requires the probability distribution of the data at the applicable scale. Although numerous models for scaling distributions exist, these are often based on theoretical developments, rather than on data. In this study, we develop a model based on the α-stable distribution of rainfall fields, and tested on 5 min radar data from a Belgian weather radar. We use these data to estimate functions that describe parameters of the distribution over various scales. Moreover, we study how the mean of the distribution and the intermittency change with scale, and validate and design functions to describe the shape parameter of the distribution. This information was combined into an effective model of the distribution. Finally, the model was fitted to data from numerous storms, and the resulting parameters were compared to investigate the change in scaling behavior through time.

Imperfect scaling in distributions of radar-derived rainfall fields

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