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Year to year variation of rainfall rate and rainfall regime in Ota, southwest Nigeria for the year 2012 to 2015

Omotosho, T. V. and Ometan, O O and Akinwumi, S A and Adewusi, O M and Boyo, A O and Singh, M S J (2017) Year to year variation of rainfall rate and rainfall regime in Ota, southwest Nigeria for the year 2012 to 2015. Journal of Physics: Conference Series, 852 (012013). 012013. ISSN 1742-6588

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Abstract

The tropics is characterized to have convective type of rainfall which has high occurrence of rainfall compared to the temperate regions of the world. In this paper, the accumulation of rainfall in Ota, Southwest, Nigeria (6o 42 N, 3o 14 E) has been analysed to present the one-minute rainfall rate and the predominant type of rainfall. Four years’ data used for this study was taken using the Davis Wireless vantage Pro2 weather station at Covenant University, Ota, Ogun State. The data collected were used to analyse the one-minute rainfall rate and different types of rainfall predominant in this region. For the prediction and modelling of rain attenuation at microwave frequencies for a region like the Nigeria at various percentage of time, one-minute rainfall rate is required. Nigeria falls into the P zone of 114 mm/hr. as per International Telecommunication Union – Recommendation (ITU-R). The analysis carried out indicated that the measured yearly averaged maximum one-minute rainfall rate for 2012, 2013, 2014 and 2015 are 157.7 mm/h, 148.0 mm/h, 241.2 mm/h and 157.3 mm/h respectively. It also indicated that the drizzle type of rainfall is predominant in contrast to established fact that thunderstorm occurs more in the tropics.

Item Type: Article
Subjects: Q Science > QC Physics
Divisions: Faculty of Engineering, Science and Mathematics > School of Physics
Depositing User: Dr Temidayo Victor Omotosho
Date Deposited: 04 Sep 2017 07:46
Last Modified: 27 Mar 2018 13:36
URI: http://eprints.covenantuniversity.edu.ng/id/eprint/8763

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