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Analysis of Cumulative Distribution Function of 2-year Rainfall Measurements in Ogbomoso, Nigeria

Semire, Folasade Abiola and Mohd-Mokhtar, Rosmiwati and Omotosho, T. V. and Widad , Ismaila and Mohamad, Norizah and Mandeep, J.S. (2012) Analysis of Cumulative Distribution Function of 2-year Rainfall Measurements in Ogbomoso, Nigeria. International Journal of Applied Science and Engineering, 10 (3). pp. 171-179. ISSN ISSN 1727-2394

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Abstract

Abstract: The conversion of most available hourly rainfall data to 1-minute integration time rain rate statistic is imperative for accurate estimation of attenuation due to rain employed in the design of both terrestrial and earth-to-space microwave systems. 2-year rainfall data collected at Ogbomoso, South-west region of Nigeria, between the periods of 2009 and 2010 was used in the analysis. Result shows that a power law relationship exists between the equiprobable rain rates of two different integration times. The regression coefficients a and b obtained are slightly different from the ITU-R recommendation. The conversion factor obtained at Ogbomoso is lower compared to Ile-Ife, in the South-west region of the country. The disagreement is attributed to the effect of global warming hitting the whole universe most especially the tropical regions. This study also reveals that different conversion factors are required for different locations even within the same climatic region.

Item Type: Article
Subjects: Q Science > QC Physics
Divisions: Faculty of Engineering, Science and Mathematics > School of Engineering Sciences
Faculty of Engineering, Science and Mathematics > School of Physics
Depositing User: Dr Temidayo Victor Omotosho
Date Deposited: 17 Dec 2012 11:39
Last Modified: 04 Sep 2017 08:21
URI: http://eprints.covenantuniversity.edu.ng/id/eprint/961

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