Avoiding "day-zero": A Testbed for Evaluating Integrated Food-energy-water Management in Cape Town, South Africa

Ding, Ke Jack; Gilligan, Jonathan M.; Hornberger, George M.

doi:10.1109/wsc40007.2019.9004889

Cited by 10 publications

(7 citation statements)

References 12 publications

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“…Firstly, we find studies that assess the impact of the disruption of a factor external to policy makers, such as the disruption of international prices (Saif et al, 2020) or the reduction of an essential resource for the nexus, such as available arable land (Chamas et al, 2021) or water (Ding et al, 2019;Saif et al, 2020). Within this group we also find studies that assess the impact of climate change on the nexus performance.…”

Section: Scenario Assessmentmentioning

confidence: 97%

“…As a result, it is possible to compare the results of a classic development strategy versus another characterised by sustainable development integrated policies (Fan et al, 2019;Niva et al, 2020). Or to estimate the outcome of strategies for mitigating the effects of climate change and improving the sustainability of water use (Martinez et al, 2018) and changes in water management (Ding et al, 2019). This includes combining tariff policies for different uses (Tan et al, 2020), altering the water available for irrigation (Chen & Chen, 2020;Wu et al, 2021) or introducing uses for treated water (Chen et al, 2020a).…”

Section: Scenario Assessmentmentioning

confidence: 99%

“…These actors take part in interacting with each other and with the environment according to their capabilities and interests (Izquierdo et al, 2008). These models show the effects of competition for resources between agents and sectors (Ding et al, 2019).…”

Section: System Dynamics Model (Sdm)mentioning

confidence: 99%

“…In an applied way, the nexus' ability to highlight certain critical points of an economic system makes it possible to use its conclusions to design strategies and develop economic policy guidelines such as investment planning (Chen et al, 2020b;Elbehri & Sadiddin, 2016;Mpandeli et al, 2018;Wang et al, 2021), urban design (Gondhalekar & Ramsauer, 2017;Toboso-Chavero et al, 2018), sectoral distribution of resource use (Nhamo et al, 2020b) and tariff policies (Bieber et al, 2018;Ding et al, 2019;Tan et al, 2020). Comparative analysis of the nexus allows for the establishment of regional economic policy guidelines within the same country (Han et al, 2020;Hua et al, 2020), while in other cases the results lead to recommendation of a greater degree of economic integration between countries in the same region (Jalilov et al, 2018;Mpandeli et al, 2018).…”

Section: Conclusion and Policy Implicationsmentioning

confidence: 99%

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Sustainability of an economy from the water-energy-food nexus perspective

Morales-García

García‐Rubio

2023

Environ Dev Sustain

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In this paper we study the usefulness of the water-energy-food nexus in assessing the sustainability of an economy. All economic activity depends on its surrounding physical environment, and especially on the interconnection between these three essential resources. As a result, the nexus is a useful tool for detecting the economic risk of resource scarcity, optimising investments or resource use, and assessing the effects of economic policies or shocks such as climate change. The nexus approach is also useful for guiding policies towards achieving the United Nations Sustainable Development Goals (SDGs). We show that both the objective of each study and the scale on which it is conducted are factors worth considering when choosing the most suitable research methodology. We detected important challenges relating to the heterogeneity of the methods, scales and variables used, and therefore necessary measures nare suggested in order to homogenise the studies for their comparability and/or integration, both horizontally and vertically, or over time. Graphical abstract

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Section: Scenario Assessmentmentioning

confidence: 97%

Section: Scenario Assessmentmentioning

confidence: 99%

Section: System Dynamics Model (Sdm)mentioning

confidence: 99%

Section: Conclusion and Policy Implicationsmentioning

confidence: 99%

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Sustainability of an economy from the water-energy-food nexus perspective

Morales-García

García‐Rubio

2023

Environ Dev Sustain

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“…In addition to temperature Earth 2021, 2 112 increase, precipitation is projected to decrease with higher spatial variability, along with drier rainy seasons and higher risks of severe droughts and extreme weather events across the southwestern regions of Africa from now on [7]. For Western Cape Province, the lack of rainfall, decreasing storage levels in major reservoirs, increasing water demand driven by population growth and urban expansion, combined with problematic and ineffective water management practices led to the "Day-Zero" water crisis which caused serious troubles to local citizens, businesses, and agriculture [8][9][10].…”

Section: Introductionmentioning

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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