Assessment of localized seasonal precipitation variability in the upper middle catchment of the Olifants River basin

This study used the Soil and Water Assessment Tool (SWAT) model together with regional climate downscaled (RCD) data from the CORDEX (Africa project), to assess the local seasonal precipitation variability in the upper middle catchment (UMC) of the Olifants River basin. The study results, based on t...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	German K. Nkhonjera, Megersa O. Dinka, Yali E. Woyessa
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	africa climate change olifants river basin precipitation variability Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/ed0f89ffa8fb443ca1ad65ce44df99e0
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:ed0f89ffa8fb443ca1ad65ce44df99e0
record_format	dspace
spelling	oai:doaj.org-article:ed0f89ffa8fb443ca1ad65ce44df99e02021-11-05T18:41:07ZAssessment of localized seasonal precipitation variability in the upper middle catchment of the Olifants River basin2040-22442408-935410.2166/wcc.2020.187https://doaj.org/article/ed0f89ffa8fb443ca1ad65ce44df99e02021-02-01T00:00:00Zhttp://jwcc.iwaponline.com/content/12/1/250https://doaj.org/toc/2040-2244https://doaj.org/toc/2408-9354This study used the Soil and Water Assessment Tool (SWAT) model together with regional climate downscaled (RCD) data from the CORDEX (Africa project), to assess the local seasonal precipitation variability in the upper middle catchment (UMC) of the Olifants River basin. The study results, based on two scenarios (RCP4.5 and RCP8.5), showed a wider monthly and seasonal variability of precipitation. The study also indicated a strong decreasing trend of east-to-west direction of spatial precipitation, with most precipitation concentrated in the eastern part of the study area. Within the western part of the UMC, we also noted another decreasing trend of precipitation from south-to-north with northern areas of the study area receiving the least amount of precipitation. This study has also revealed a considerable general reduction of future seasonal precipitation especially in the mid-term period (2021–2050). The general reduction in future seasonal precipitation, combined with the increasing temperatures in the area, may exacerbate the drought conditions and reduction in streamflow of the main river (Olifants) and its tributaries, consequently having a negative impact on the economic activities in the basin.German K. NkhonjeraMegersa O. DinkaYali E. WoyessaIWA Publishingarticleafricaclimate changeolifants river basinprecipitation variabilityEnvironmental technology. Sanitary engineeringTD1-1066Environmental sciencesGE1-350ENJournal of Water and Climate Change, Vol 12, Iss 1, Pp 250-264 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	africa climate change olifants river basin precipitation variability Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350
spellingShingle	africa climate change olifants river basin precipitation variability Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 German K. Nkhonjera Megersa O. Dinka Yali E. Woyessa Assessment of localized seasonal precipitation variability in the upper middle catchment of the Olifants River basin
description	This study used the Soil and Water Assessment Tool (SWAT) model together with regional climate downscaled (RCD) data from the CORDEX (Africa project), to assess the local seasonal precipitation variability in the upper middle catchment (UMC) of the Olifants River basin. The study results, based on two scenarios (RCP4.5 and RCP8.5), showed a wider monthly and seasonal variability of precipitation. The study also indicated a strong decreasing trend of east-to-west direction of spatial precipitation, with most precipitation concentrated in the eastern part of the study area. Within the western part of the UMC, we also noted another decreasing trend of precipitation from south-to-north with northern areas of the study area receiving the least amount of precipitation. This study has also revealed a considerable general reduction of future seasonal precipitation especially in the mid-term period (2021–2050). The general reduction in future seasonal precipitation, combined with the increasing temperatures in the area, may exacerbate the drought conditions and reduction in streamflow of the main river (Olifants) and its tributaries, consequently having a negative impact on the economic activities in the basin.
format	article
author	German K. Nkhonjera Megersa O. Dinka Yali E. Woyessa
author_facet	German K. Nkhonjera Megersa O. Dinka Yali E. Woyessa
author_sort	German K. Nkhonjera
title	Assessment of localized seasonal precipitation variability in the upper middle catchment of the Olifants River basin
title_short	Assessment of localized seasonal precipitation variability in the upper middle catchment of the Olifants River basin
title_full	Assessment of localized seasonal precipitation variability in the upper middle catchment of the Olifants River basin
title_fullStr	Assessment of localized seasonal precipitation variability in the upper middle catchment of the Olifants River basin
title_full_unstemmed	Assessment of localized seasonal precipitation variability in the upper middle catchment of the Olifants River basin
title_sort	assessment of localized seasonal precipitation variability in the upper middle catchment of the olifants river basin
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/ed0f89ffa8fb443ca1ad65ce44df99e0
work_keys_str_mv	AT germanknkhonjera assessmentoflocalizedseasonalprecipitationvariabilityintheuppermiddlecatchmentoftheolifantsriverbasin AT megersaodinka assessmentoflocalizedseasonalprecipitationvariabilityintheuppermiddlecatchmentoftheolifantsriverbasin AT yaliewoyessa assessmentoflocalizedseasonalprecipitationvariabilityintheuppermiddlecatchmentoftheolifantsriverbasin
_version_	1718444138045636608

Assessment of localized seasonal precipitation variability in the upper middle catchment of the Olifants River basin

Ejemplares similares