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

Show simple item record Nsubuga, Francis Wasswa Nkugwa Botai, Joel Ongego Olwoch, Jane Mukarugwiza Rautenbach, Cornelis Johannes de Wet Bevis, Yvette Adetunji, Adebayo, O. 2014-03-26T14:00:04Z 2014
dc.description.abstract A 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.embargo 2015-06-30
dc.description.librarian hb2014 en_US
dc.description.uri en_US
dc.identifier.citation Nsubuga, 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.issn 0262-6667 (print)
dc.identifier.issn 2150-3435 (online)
dc.identifier.other 10.1080/02626667.2013.804188
dc.language.iso en en_US
dc.publisher Taylor & Francis en_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: en_US
dc.subject Trend analysis en_US
dc.subject Uganda en_US
dc.subject Drainage sub-basins en_US
dc.subject Mann-Kendall en_US
dc.subject Sen’s T test en_US
dc.subject Precipitation concentration index (PCI) en_US
dc.subject Drought severity index (DSI) en_US
dc.title The nature of rainfall in the main drainage sub-basins of Uganda en_US
dc.type Postprint Article en_US

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