Abstract
The current and projected warming of the earth is unequivocal with humans playing a strong role as both perpetrators and victims. The warming on the African continent is projected to be greater than the global average with an increased average temperature of 3–6°C by the end of the century under a high Representative Concentration Pathway. In Africa, the Sub-Saharan region is identified as the most vulnerable to the changing climate due to its very low capacity to adapt to or mitigate climate change. While it is common to identify studies conducted to assess how climate change independently impacts water, land, or food resources, very limited studies have sought to address the interlinkages, synergies, and trade-offs existing between climate change, water, land, and food (WLF) resources as a system in Sub-Saharan Africa (SSA). The climate change and WLF security nexus, therefore, seeks to address this shortfall in literature and subsequently serve as a relevant source of information for decision-making and policy implementation concerning climate change mitigation and adaptation. In this study, 41 relevant studies were selected from Web of Science, Google Scholar, ResearchGate, and institutional websites. We provide information on the independent relationships between climate change and WLF resources, and further discuss the existing inter-linkages between climate change and the WLF security in SSA using the nexus approach, with recommendations on how decision making and policy implementations should be done using the climate change and WLF security nexus approach.
Highlights
Climate change as defined by the Intergovernmental Panel on Climate Change (IPCC) is “a change in the state of the climate that can be identified by changes in the mean and/or the variability of its properties, and that persists for an extended period, typically decades or longer” [Intergovernmental Panel on Climate Change (IPCC), 2007]
This study has presented the current and future trends of climate change in Sub-Saharan Africa (SSA)
It examines the relationship between climate change and the components of the WLF security nexus independently, and on the other hand, it provides an overview of how interconnected the components of the WLF security nexus are, and how when climate change impacts one of them, the others can directly or indirectly suffer the consequences
Summary
Climate change as defined by the Intergovernmental Panel on Climate Change (IPCC) is “a change in the state of the climate that can be identified (e.g. using statistical tests) by changes in the mean and/or the variability of its properties, and that persists for an extended period, typically decades or longer” [Intergovernmental Panel on Climate Change (IPCC), 2007]. The observed changes in climate at the global, continental, and sub-continental levels include an increase in air and ocean temperatures, sea-level rise, decrease in snow and ice extent, increase and decrease in precipitation, changes in terrestrial and marine biological systems, ocean acidification [Intergovernmental Panel on Climate Change (IPCC), 2007; UNFCCC, 2011]. These observed changes in the climatic system have been mainly induced by the warming process of the climate system.
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