The nature of rainfall in the main drainage sub-basins of Uganda

dc.contributor.authorNsubuga, Francis Wasswa Nkugwa
dc.contributor.authorBotai, Joel Ongego
dc.contributor.authorOlwoch, Jane Mukarugwiza
dc.contributor.authorRautenbach, Cornelis Johannes de Wet
dc.contributor.authorBevis, Yvette
dc.contributor.authorAdetunji, Adebayo, O.
dc.contributor.emailhannes.rautenbach@up.ac.zaen_US
dc.date.accessioned2014-03-26T14:00:04Z
dc.date.issued2014
dc.description.abstractA study of rainfall trends and temporal variations within seven sub- basins of Uganda spanning from 1940 to 2009 has been made. Rainfall climatologies are constructed from observational data, using 36 station records which reflect hydro climatic conditions. Long-term changes in rainfall characteristics were determined by non-parametric tests (Mann-Kendall and Sen’s T tests), coefficient of variation, precipitation concentration Index and drought severity index. Magnitude of change was estimated by applying Sen’s estimator of slope. Decadal variability of rainfall with marked seasonal cycles is evident. Temporal variability of drought patterns is detected. Variations in annual rainfall are low with no significant trends observed in the main drainage sub-basins. Significant trends occur in October, November, December and January. A noticeable decrease in the annual total rainfall was observed mostly in north-western and south-western sub-basins. Rainfall trend in the second normal of June-July-August (JJA) was decreasing in all the main drainage sub-basins.en_US
dc.description.embargo2015-06-30
dc.description.librarianhb2014en_US
dc.description.urihttp://www.tandfonline.com/loi/thsj20en_US
dc.identifier.citationNsubuga, FWN, Botai, OJ, Olwoch, JM, Rautenbach, CJdeW, Bevis, Y & Adetunji, AO 2014, 'The nature of rainfall in the main drainage sub-basins of Uganda', Hydrological Sciences Journal, vol. 59, no. 2, pp. 278-299.en_US
dc.identifier.issn0262-6667 (print)
dc.identifier.issn2150-3435 (online)
dc.identifier.other10.1080/02626667.2013.804188
dc.identifier.urihttp://hdl.handle.net/2263/37167
dc.language.isoenen_US
dc.publisherTaylor & Francisen_US
dc.rights© Taylor & Francis. This is an electronic version of an article published in Hydrological Sciences Journal, NYP. Hydrological Sciences Journal is available online at: http://www.tandfonline.com/loi/thsj20en_US
dc.subjectTrend analysisen_US
dc.subjectUgandaen_US
dc.subjectDrainage sub-basinsen_US
dc.subjectMann-Kendallen_US
dc.subjectSen’s T testen_US
dc.subjectPrecipitation concentration index (PCI)en_US
dc.subjectDrought severity index (DSI)en_US
dc.titleThe nature of rainfall in the main drainage sub-basins of Ugandaen_US
dc.typePostprint Articleen_US

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