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Rainfall variability over Ghana: Model versus rain gauge observation

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dc.contributor.author Klutse, Nama Ama Browne
dc.contributor.author Adukpo, David Cudjoe
dc.contributor.author Owusu, Kwadwo
dc.contributor.author Quagraine, Kwesi Akumenyi
dc.date.accessioned 2021-09-08T11:37:00Z
dc.date.available 2021-09-08T11:37:00Z
dc.date.issued 2012
dc.identifier.issn 23105496
dc.identifier.uri http://hdl.handle.net/123456789/6069
dc.description 4p:, ill. en_US
dc.description.abstract This paper used the International Centre for Theoretical Physics (ICTP) Regional Climate Model, Version 3 (RegCM3) and rain gauge data selected from the Ghana Meteorological Agency (GMet) from 1990 to 2008 to investigate the extent and nature of variability in the annual rainfall and pattern of the raining seasons in Ghana. In the study, six meteorological stations selected from three rainfall distribution zones according to the divisions of the GMet were used to study the pattern of rainfall and its departure from the normal trend. The study also assessed the performance of the RegCM3 simulation with reference to the observed gauge data. Results confirmed the unimodal nature of the rainfall annual cycle over the northern belt and bi-modal rainfall nature over the middle and southern belts of Ghana. Negative departures of rainfall implying consistent downward trend were observed at all the stations. Our analysis showed that RegCM3 captured the average rainfall over Ghana but demonstrated an underestimation as compared to the observed gauge data. The model also had difficulty stimulating the departures accurately in direction and in magnitude in all the stations except for Accra where RegCM3 simulated the right direction of the departures en_US
dc.language.iso en en_US
dc.publisher University of Cape Coast en_US
dc.subject Rainfall Variability en_US
dc.subject Ghana en_US
dc.subject RegCM3 en_US
dc.subject Temporal Rainfall Distribution en_US
dc.subject Rain Gauge Data en_US
dc.title Rainfall variability over Ghana: Model versus rain gauge observation en_US
dc.type Article en_US


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