Climate change vulnerability index for South African aquifers

Dennis, Ingrid; Dennis, Rainier

doi:10.4314/wsa.v38i3.7

Cited by 28 publications

(17 citation statements)

References 10 publications

(2 reference statements)

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“…In many sub-Sahara African (SSA) countries, the interlinkage between water and energy remains significant in the region, particularly in countries such as South Africa where coal-combustion is still the main driver for electricity production. Energy generation through coal-combustion, however, is one of the biggest contributors to human-induced climate change through the release of greenhouse gases (Intergovernmental Panel on Climate Change, 2007;Omer, 2008) which is widely perceived to be threatening human existence and exerting enormous pressure on limited water resources (Mukheibir, 2008;Dennis and Dennis, 2012;Nkhonjera, 2017). These considerations further highlight the coupling between the systems of water, energy and climate change -the water-energy-climate change (WECC) nexus.…”

Section: Introductionmentioning

confidence: 99%

Perspectives on integrated water resource management and its relevance in understanding the water-energy-climate change nexus in South Africa

Mathetsa

Simatele

Rampedi

et al. 2019

J. energy South. Afr.

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It is increasingly acknowledged that the water-energy-climate change (WECC) nexus is one of the synergies that pose a significant risk to achievement of sustainable development goals (SDGs), specifically numbers six, seven and thirteen. There are suggestions that climate change outcomes such as increased temperature and drought episodes have implications for water availability, which in turn affects energy production in countries dependent on hydropower, pump-storage or coal-generated electricity, including South Africa. This development therefore calls for improved understanding of how to effectively manage the challenges that arise from this nexus, to mitigate the impacts it may have on achieving the associated SDGs. This study, which is based on an in-depth appraisal of existing developments, assessed the potential of the integrated water resource management framework in understanding the WECC nexus and its implications for South Africa’s sustainable development endeavours, particularly in the context of water resource management and utilisation. The study revealed South Africa’s lack of integrated, effective, and efficient institutions and policy framework to comprehensively manage the challenges emanating from this nexus. It identified an urgent need to develop systems and processes through which South Africa can handle the challenges as well as capture the benefits that may be obtained from this nexus.

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Section: Introductionmentioning

confidence: 99%

Perspectives on integrated water resource management and its relevance in understanding the water-energy-climate change nexus in South Africa

Mathetsa

Simatele

Rampedi

et al. 2019

J. energy South. Afr.

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“…Average summer temperatures range from 5 • C to 27 • C, while winter temperatures range from 5 • C to 22 • C [20]. The Western Cape is one of South Africa's driest regions with approximately 350 mm annual precipitation, well below the national annual average of 500 mm precipitation [21]. Precipitation is also highly heterogeneous and varies greatly, from semi-arid areas to relatively wet areas on the windward slope of mountains [22].…”

Section: Study Regionmentioning

confidence: 99%

Localize the Impact of Global Greenhouse Gases Emissions under an Uncertain Future: A Case Study in Western Cape, South Africa

Ding

2021

Earth

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The growing impact of CO2 and other greenhouse-gas (GHG) emissions on the socio-climate system in the Western Cape, South Africa, urgently calls for the need for better climate adaptation and emissions-reduction strategies. While the consensus has been that there is a strong correlation between CO2 emissions and the global climate system, few studies on climate change in the Western Cape have quantified the impact of climate change on local climate metrics such as precipitation and evaporation under different future climate scenarios. The present study investigates three different CO2 emissions scenarios: Representative Concentration Pathway (RCP) 2.6, RCP 4.5, and RCP 8.5, from moderate to severe, respectively. Specifically, we used climate metrics including precipitation, daily mean and maximum near-surface air temperature, and evaporation to evaluate the future climate in Western Cape under each different RCP climate scenario. The projected simulation results reveal that temperature-related metrics are more sensitive to CO2 emissions than water-related metrics. Districts closer to the south coast are more resilient to severer GHG emissions scenarios compared to inland areas regarding temperature and rainfall; however, coastal regions are more likely to suffer from severe droughts such as the “Day-Zero” water crisis. As a result, a robust drying signal across the Western Cape region is likely to be seen in the second half of the 21st century, especially under the scenario of RCP 8.5 (business as usual) without efficient emissions reduction policies.

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“…Arising from the WSA, the main strategy to achieve the first three of the above objectives is the provision of the first 6 kl for free to all households The strategy to implement this objective was to install metres in all households, to help households to monitor their consumption and detect any leakages that could cause unnecessary losses of water (Hay et al 2012;Thompson et al 2013). Operation Gcina' Manzi (conserve water) was launched through the installation of metres (Tshabalala 2008) (Figure 1).…”

Section: Implementation Of the Water Services Act Of 1997 And The Natmentioning

confidence: 99%

Johannesburg’s implementation of the National Water Act, 1998 in Soweto, South Africa

Maphela

Cloete

2019

Development Southern Africa

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The Guide to the National Water Act, 1998 (Act 36 of 1998) regards the availability of water as a basic human right. However, local governments seem to struggle to pay for the water they provide to their residents as prescribed in the Water Services Act, 1997 (Act 108 of 1997). This study focused on the domestic provision and consumption of water in Soweto, one of the largest townships in the Johannesburg area of South Africa. Surveys were conducted with 372 respondents from three different socioeconomic suburbs in Soweto with the aim to establish their water use perceptions and practices. Study results indicate implementation of the National Water Act is still being resisted by Sowetan households more than two decades after its adoption, due to the difference in expectations of the municipality and the residents regarding rights to water access and responsible usage.

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Climate change vulnerability index for South African aquifers

Cited by 28 publications

References 10 publications

Perspectives on integrated water resource management and its relevance in understanding the water-energy-climate change nexus in South Africa

Perspectives on integrated water resource management and its relevance in understanding the water-energy-climate change nexus in South Africa

Localize the Impact of Global Greenhouse Gases Emissions under an Uncertain Future: A Case Study in Western Cape, South Africa

Johannesburg’s implementation of the National Water Act, 1998 in Soweto, South Africa

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