An Approach for the Estimation of Hydrometeorological Variables Towards the Determination of Z-R Coefficients

被引：6

作者：

Baltas E.A. ^{[1
]}

Panagos D.S. ^{[1
]}

Mimikou M.A. ^{[1
]}

机构：

[1] Department of Water Resources, Hydraulic and Maritime Engineering, National Technical University of Athens, 5 Iroon Polytechniou, Zografou, Athens

来源：

Environmental Processes | 2015年 / 2卷 / 04期

关键词：

Disdrometer; JWD; Radar reflectivity; Rainfall; Z-R relationships;

D O I：

10.1007/s40710-015-0119-x

中图分类号：

学科分类号：

摘要：

An attempt is made to estimate the basic hydrometeorological variables, namely the rainfall concentration for each bin per m3, the radar reflectivity factor Z and the rainfall intensity R, and consequently to determine coefficient "a" and exponent "b" of the power law relationship Z = aRb. Data used were recorded in a period of almost 10 years, with a Joss-Walvogel RD-69 disdrometer (JWD), located in the meteorological station of the campus of National Technical University of Athens. A number of rainfall events were selected based on the following criteria: the total rainfall depth of each event was greater than 24.0 mm and the average rainfall intensity exceeded 5.0 mm/h, in order to only study events with increased flash flooding probability. Initially, Drop Size Distributions (DSDs) were calculated for these rainfall events and processed for the derivation of Z-R relationships. Such Z-R relationships were finally derived for the overall spectra of R > 5.0 mm/h and for each event separately and were compared with other Z-R relationships found in the literature. © 2015 Springer International Publishing Switzerland.

引用

页码：751 / 759

页数：8

共 17 条

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