Ms. Elissavet Feloni Profile

Elissavet Feloni

at National Technical Univ of Athens

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Proceedings Article | 6 September 2017 Paper

Analysis of Joss-Waldvogel disdrometer measurements in rainfall events

Elissavet Feloni, Konstantinos Kotsifakis, Nikolaos Dervos, George Giavis, Evangelos Baltas

Proceedings Volume 10444, 104441H (2017) https://doi.org/10.1117/12.2279610

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The purpose of this research work is the analysis of a number of precipitation events, using the RD-69 Joss-Waldvogel Disdrometer measurements. This instrument measures the raindrop size distributions continuously and automatically by transforming the vertical momentum of an impacting raindrop, whose amplitude is a function of the drop diameter. The range of drop diameters varies from 0.3 mm to 5.6 mm (dividing them into 20 channels). The knowledge of drop size distributions in rain is of importance in precipitation physics and radar hydrology and is used to estimate various hydrometeorological parameters, such as rainfall rate R, and radar reflectivity factor Z. Four different equations for the final falling velocity (V_t), depending on the diameter, were used and evaluated based on the Z-R relationships.

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