Integrated assessment of the influence of climate change on current and future intra-annual water availability in the Vaal River catchment

Increasing water demand due to population growth, economic expansion and the need for development puts a strain on the supply capacity of the Vaal River catchment in South Africa. Climate change presents additional challenges in the catchment which supports the country's economic hub, more than...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Akanbi T. Remilekun, Ndarana Thando, Davis Nerhene, Emma Archer
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	climate change intra-annual water availability south africa vaal river basin weap Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/161ac5a6b0fa404ba2733f149c5a9cc8
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:161ac5a6b0fa404ba2733f149c5a9cc8
record_format	dspace
spelling	oai:doaj.org-article:161ac5a6b0fa404ba2733f149c5a9cc82021-11-05T18:31:16ZIntegrated assessment of the influence of climate change on current and future intra-annual water availability in the Vaal River catchment2040-22442408-935410.2166/wcc.2020.269https://doaj.org/article/161ac5a6b0fa404ba2733f149c5a9cc82021-03-01T00:00:00Zhttp://jwcc.iwaponline.com/content/12/2/533https://doaj.org/toc/2040-2244https://doaj.org/toc/2408-9354Increasing water demand due to population growth, economic expansion and the need for development puts a strain on the supply capacity of the Vaal River catchment in South Africa. Climate change presents additional challenges in the catchment which supports the country's economic hub, more than 30% of its population and over 70% of its maize production. This study evaluates the influence of climate change on current and future intra-annual water availability and demand using a multi-tiered approach where climate scenarios, hydrological modelling and socio-economic considerations were applied. Results shows exacerbated water supply challenges for the future. Temperature increases of between 0.07 and 5 °C and precipitation reductions ranging from 0.4 to 30% for Representative Concentration Pathways (RCPs) 4.5 and 8.5, respectively, are also predicted by the end of the century. The highest monthly average streamflow reductions (8–10%) are predicted for the summer months beyond 2040. Water Evaluation and Planning (WEAP) simulations project an increase in future water requirements, gaps in future water assurance and highlight limitations in existing management strategies. The study recommends a combination of adaptation plans, climatic/non-climatic stressor monitoring, wastewater-reuse, conservation, demand management and inter-basin transfers to reduce future uncertainty in monthly water sustainability.Akanbi T. RemilekunNdarana ThandoDavis NerheneEmma ArcherIWA Publishingarticleclimate changeintra-annual water availabilitysouth africavaal river basinweapEnvironmental technology. Sanitary engineeringTD1-1066Environmental sciencesGE1-350ENJournal of Water and Climate Change, Vol 12, Iss 2, Pp 533-551 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	climate change intra-annual water availability south africa vaal river basin weap Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350
spellingShingle	climate change intra-annual water availability south africa vaal river basin weap Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Akanbi T. Remilekun Ndarana Thando Davis Nerhene Emma Archer Integrated assessment of the influence of climate change on current and future intra-annual water availability in the Vaal River catchment
description	Increasing water demand due to population growth, economic expansion and the need for development puts a strain on the supply capacity of the Vaal River catchment in South Africa. Climate change presents additional challenges in the catchment which supports the country's economic hub, more than 30% of its population and over 70% of its maize production. This study evaluates the influence of climate change on current and future intra-annual water availability and demand using a multi-tiered approach where climate scenarios, hydrological modelling and socio-economic considerations were applied. Results shows exacerbated water supply challenges for the future. Temperature increases of between 0.07 and 5 °C and precipitation reductions ranging from 0.4 to 30% for Representative Concentration Pathways (RCPs) 4.5 and 8.5, respectively, are also predicted by the end of the century. The highest monthly average streamflow reductions (8–10%) are predicted for the summer months beyond 2040. Water Evaluation and Planning (WEAP) simulations project an increase in future water requirements, gaps in future water assurance and highlight limitations in existing management strategies. The study recommends a combination of adaptation plans, climatic/non-climatic stressor monitoring, wastewater-reuse, conservation, demand management and inter-basin transfers to reduce future uncertainty in monthly water sustainability.
format	article
author	Akanbi T. Remilekun Ndarana Thando Davis Nerhene Emma Archer
author_facet	Akanbi T. Remilekun Ndarana Thando Davis Nerhene Emma Archer
author_sort	Akanbi T. Remilekun
title	Integrated assessment of the influence of climate change on current and future intra-annual water availability in the Vaal River catchment
title_short	Integrated assessment of the influence of climate change on current and future intra-annual water availability in the Vaal River catchment
title_full	Integrated assessment of the influence of climate change on current and future intra-annual water availability in the Vaal River catchment
title_fullStr	Integrated assessment of the influence of climate change on current and future intra-annual water availability in the Vaal River catchment
title_full_unstemmed	Integrated assessment of the influence of climate change on current and future intra-annual water availability in the Vaal River catchment
title_sort	integrated assessment of the influence of climate change on current and future intra-annual water availability in the vaal river catchment
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/161ac5a6b0fa404ba2733f149c5a9cc8
work_keys_str_mv	AT akanbitremilekun integratedassessmentoftheinfluenceofclimatechangeoncurrentandfutureintraannualwateravailabilityinthevaalrivercatchment AT ndaranathando integratedassessmentoftheinfluenceofclimatechangeoncurrentandfutureintraannualwateravailabilityinthevaalrivercatchment AT davisnerhene integratedassessmentoftheinfluenceofclimatechangeoncurrentandfutureintraannualwateravailabilityinthevaalrivercatchment AT emmaarcher integratedassessmentoftheinfluenceofclimatechangeoncurrentandfutureintraannualwateravailabilityinthevaalrivercatchment
_version_	1718444084741275648

Integrated assessment of the influence of climate change on current and future intra-annual water availability in the Vaal River catchment

Ejemplares similares