Sokoine University of Agriculture

Assessment of the Impacts of Climate Change on Hydrological Characteristics of the Mbarali River Sub Catchment Using High Resolution Climate Simulations from CORDEX Regional Climate Models

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dc.contributor.author Mutayoba, E
dc.contributor.author Kashaigili, J.J
dc.contributor.author Kahimba, F.C
dc.contributor.author Mbungu, W
dc.contributor.author Chilagane, N.A
dc.date.accessioned 2021-07-28T13:14:43Z
dc.date.available 2021-07-28T13:14:43Z
dc.date.issued 2018
dc.identifier.issn 1916-9639
dc.identifier.uri http://www.suaire.sua.ac.tz/handle/123456789/3790
dc.description.abstract This study assesses the impacts of climate change on water resources over Mbarali River sub-catchment using high resolution climate simulations from the Coordinated Regional Climate Downscaling Experiment Regional Climate Models (CORDEX_RCMs). Daily rainfall, minimum and maximum temperatures for historical climate (1971-2000) and for the future climate projection (2011-2100) under two Representative Concentration Pathways RCP 8.5 and RCP 4.5 were used as input into the Soil and Water Assessment Tool (SWAT) hydrological model to simulate stream flows and water balance components for the Mbarali River sub-catchment. The impacts of climate change on hydrological conditions over Mbarali river catchment were assessed by comparing the mean values of stream flows and water balance components during the present (2011-2040), mid (2041-2070) and end (2071-2100) centuries with their respective mean values in the baseline (1971-2000) climate condition. The results of the study indicate that, in the future, under both RCP 4.5 and RCP 8.5 emission scenarios, the four main components that determine change in catchment water balance (rainfall, ground water recharge, evaporation and surface runoff) over Mbarali river catchment are projected to increase. While the stream flows are projected to decline in the future by 13.33% under RCP 4.5 and 13.67% under RCP 8.5 emission scenarios, it is important to note that simulated surface runoff under RCP8.5 emission scenario is higher than that which is obtained under the RCP4.5 emission scenario. en_US
dc.language.iso en en_US
dc.publisher Canadian Center of Science and Education en_US
dc.subject RCP en_US
dc.subject Regional climate model en_US
dc.subject General circulation models en_US
dc.subject SWAT model en_US
dc.subject hydrological water balance components en_US
dc.title Assessment of the Impacts of Climate Change on Hydrological Characteristics of the Mbarali River Sub Catchment Using High Resolution Climate Simulations from CORDEX Regional Climate Models en_US
dc.type Article en_US
dc.url https://doi.org/10.5539/apr.v10n5p61 en_US


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