Precipitation Type Specific Radar Reflectivity-rain Rate Relationships for Warsaw, Poland

• Autorzy: Licznar P. , Krajewski W. F.

Identyfikatory

DOI

10.1515/acgeo-2016-0071

• Języki publikacji: EN

Abstrakty

EN

Implementation of weather radar precipitation estimates into hydrology, especially urban hydrology practice in Poland, requires the introduction of more precise radar reflectivity versus rain rate (Z-R) relationships accounting for drop size distribution (DSD) specific for different precipitation phases. We explored the development of precipitation type dependent Z-R relationship on the basis of approximately two years of DSD recordings at high temporal resolution of ten seconds. We divided the recorded data into four separate precipitation-type groups: rain, snow, rain-with-snow, and hail. The Z-R relationships for rain and rainwith-snow showed a strong resemblance to the well-known MarshallPalmer Z-R power-type relationship for rain. In the case of snowfall, we found that both the multiplication factor and the exponent coefficients in the Z-R formula have smaller values than for rain. In contrast, for hail precipitation these parameters are higher than for rain, especially the multiplication factor.

Słowa kluczowe

EN

laser disdrometer; hydrometeor types; dual polarization radar; Z-R relation

PL

disdrometr laserowy

• Wydawca: Instytut Geofizyki PAN ; Springer
• Czasopismo: Acta Geophysica
• Rocznik: 2016
• Tom: Vol. 64, no. 5
• Strony: 1840--1857
• Opis fizyczny: Bibliogr. 21 poz.

Twórcy

autor

Licznar P.

• Faculty of Environmental Engineering, Wroclaw University of Technology, Wrocław, Poland

autor

Krajewski W. F.

• HR – Hydroscience & Engineering, University of Iowa, Iowa City, USA

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