(A Peer Review Journal)
e–ISSN: 2408–5162; p–ISSN: 2048–5170


Pages: 186-194
A. C. Tomiwa

keywords: Stratiform, Convective, radar reflectivity, micro rain radar


Measurements of rainfall parameters such as the liquid water content (M), radar reflectivity factor (Z), rain rates (R) and the falling velocities (w) were carried out in this study using a vertically looking Micro Rain Radar (MRR) located at the Department of Physics of The Federal University of Technology Akure (7o15΄N, 5o15΄E). The parameters were measured from the ground level to a height of 4.8 km above sea level with a vertical resolution of 0.16 km and over a total of 30 range gates with 1 min integration time. The measurements covered a period of four years (2008, 2009, 2010 and 2014).The study established relationships between all the parameters measured and in particular between radar reflectivity (Z) and rain rates (R) and liquid water content (M) and rain rates (R). The results show that the values of the correlation coefficients obtained for the relationships were more than 0.64 showing good Z-R and M- R relationships and the values of coefficients, a and exponents, bare in good agreement with what was obtained in other locations around the world. The results of rain attenuation computed show a consistent increase in the specific attenuation from drizzle rain type to thunderstorm rain type until the values reach a critical stage at frequencies ranging from 31-100 GHz.


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