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

[1]

Atlas D., Ulbrich C.W., Path and area integrated rainfall measurement by microwave attenuation in the 1-3 cm band, J Appl Meteorol, 16, pp. 1322-1331, (1977)

[2]

Baltas E.A., Mimikou M.A., The use of a Joss-type disdrometer for the derivation of Z-R relationships, Second European Conference on Radar in Meteorology and Hydrology (ERAD 2002), pp. 291-294, (2002)

[3]

Brandes E.A., Zhang G., Vivekanandan J., Drop size distribution retrieval with polarimetric radar: Model and application, J Appl Meteorol, 43, pp. 461-475, (2004)

[4]

Brawn D., Upton G., Estimation of an atmospheric gamma drop size distribution using disdrometer data, Atmos Res, 87, pp. 66-79, (2008)

[5]

Caracciolo C., Porcu F., Prodi F., Precipitation classification at mid-latitudes in terms of drop size distribution parameters, Adv Geosci, 16, pp. 11-17, (2008)

[6]

Harikumar R., Sampath S., Sasi Kumar V., An empirical model for the variation of rain drop size distribution with rain rate at a few locations in southern India, Adv Space Res, 43, pp. 837-844, (2009)

[7]

Hazenberg P., Yu N., Boudevillain B., Delrieu G., Uijlenhoet R., Scaling of raindrop size distributions and classification of radar reflectivity-rain rate relations in intense Mediterranean precipitation, J Hydrol, 402, pp. 179-192, (2011)

[8]

Korologou M., Flocas H., Michalopoulou H., Developing an index for heavy convective rainfall forecasting over a Mediterranean coastal area, Nat Hazards Earth Syst Sci, 14, pp. 2205-2214, (2014)

[9]

Krajewski W.F., Et al., DEVEX-disdrometer evaluation experiment: Basic results and implications for hydrologic studies, Adv Water Resour, 29, pp. 311-325, (2006)

[10]

Marshall J.S., Palmer W.M., The distribution of raindrops with size, J Meteorol, 5, pp. 165-166, (1948)

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