From Climate Risk To Resilience Unpacking The Economic Impacts Of Climate Change In Zambia

Climate change is projected to cause an increase in average temperatures in Zambia and a decline in rainfall, particularly in the southern and western regions. The country experiences high rainfall variability, which climate change is expected to exacerbate, resulting in likely higher frequency and intensity of already reoccurring extreme weather events, such as droughts and floods. The combined effect of the temperature and precipitation projections is anticipated to cause a decrease in water availability at national level and to adversely affect the Zambezi, Kafue, and Luangwa River Basins. Overall, these trends will exacerbate existing vulnerabilities in southwestern Zambia, as the region is already prone to droughts (as well as floods in some parts). On the other hand, the northern parts of the country are projected to experience a slight increase in rainfall and to be overall relatively positively affected by climate change. The key sectors most likely to be significantly affected by climate change in Zambia include agriculture, road infrastructure, and energy. In agriculture, the key risk stemming from climate change is the projected lower maize yields, as this is the country’s staple crop. Other crops are also expected to be adversely affected by higher temperatures, reduced rainfall, and increased occurrence of extreme events, particularly in southern and western Zambia. That said, changing climate conditions could create new agricultural opportunities in the north. Climate change is projected to negatively affect the livestock subsector, which will increase food security risks, particularly for subsistence farmers. In road infrastructure, the projected higher occurrence of flooding, especially in Lusaka Province, could have a knock-on effect for the rest of the economy, particularly if it damages key international corridors passing through this region and/or affects domestic supply chains. Zambia is significantly reliant on hydropower and is already experiencing severe power cuts due to drought. The risks in the sector are exacerbated by the location of key hydropower plants in the southern parts of the country and the projected drying up of main river basins. The electricity shortages have spillover effects on the rest of the economy, including the copper industry, Zambia’s key export. This has international implications, as Zambia is a top copper producer worldwide, and demand for copper is expected to increase significantly due to its crucial role in various green technologies. Thus, absent adaptation measures, the adverse impact of climate change in Zambia could affect global mitigation efforts and strategies.

Mozambique is already vulnerable to extreme weather events and climate change is projected to exacerbate their frequency and intensity. The occurrence of cyclones and flooding has increased in recent years and the trend is expected to continue. The country’s coast—where 60 percent of the population, the three biggest cities, and critical infrastructure are situated—is most exposed to climate change-related risks, including damage from cyclones and projected sea level rise. Densely populated and low-lying regions, such as Zambezia, Nampula, Sofala, and Maputo Provinces, are particularly exposed to risks from flooding. More broadly, climate change is projected to increase average temperatures across the country and to result in higher variability in precipitation, especially in the south. The most critical economic sectors vulnerable to climate change in Mozambique are agriculture, transport, and potentially energy. In agriculture, maize is likely to be the most affected key crop. This can pose risks to food security (alongside expected higher food inflation because of climate change), given maize’s widespread cultivation and role in nutrition. The impact on other crops is likely to be more limited, and to a large extent driven by damages from increased frequency of extreme weather events. This could exacerbate challenges in the sector, which is already constrained by low productivity and limited arable areas. That said, climate change could create some opportunities; for example, rice yields are projected to improve. Most studies project agricultural production in the central region to be most adversely affected by climate change, albeit the impact varies by crop and within regions. Mozambique’s transport infrastructure is highly vulnerable to climate change due to the projected increase in flooding, the low proportion of paved roads, their limited interconnectivity, and the vulnerability of ports to cyclones and storm surges. Damages to Mozambique’s transport sector are likely to have knock-on effects to other sectors and can have significant regional implications, as the country serves as a conduit for landlocked neighboring countries. Infrastructure damages, alongside the projected coastal erosion, may severely affect the tourism sector. Furthermore, Mozambique’s high dependence on hydropower exposes it to losses from rainfall variability, which is expected to increase. The country’s largest hydropower plant is located downstream on the Zambezi River, which various studies project to dry up due to climate change. Increased water use in upstream countries (such as because of greater irrigation needs and in response to growing populations) could also pose risks to Mozambique’s hydropower sector.

Substantial model variability exists regarding the likely meteorological impact of climate change on Kenya, particularly with respect to future precipitation levels. Significant regional differences are expected, largely due to Kenya’s diverse climate profile. Overall, temperatures are projected to increase while future precipitation levels are highly uncertain. Climate change is expected to significantly affect coastal areas, including because of sea level rise risks, stronger winds, and an overall warmer and drier climate. This will likely harm important ecosystems, including wetlands, mangroves, and coral reefs. Some models project that arid and semi-arid areas may become drier and hotter, which would exacerbate preexisting water scarcity and agricultural challenges for the already vulnerable communities living there. That said, these projections are not corroborated by all models. The climate change impact on other areas, particularly south and west of Mount Kenya, could generally be positive, as it would provide even better conditions for agriculture. The key climate change risk for Kenya is from extreme events, in particular droughts and floods. The frequency and intensity of such events is likely to increase because of climate change. They also often lead to adverse knock-on effects, such as soil erosion, land degradation, and pest breakouts. Overall, Kenya’s updated Nationally Determined Contribution (NDC) (2020) estimates that between 2010 and 2020, adverse climate change-related events led to annual socioeconomic losses of 3–5 percent of total gross domestic product (GDP).

Climate change is not projected to materially alter Malawi’s climate profile. Instead, it is likely to exacerbate existing climate vulnerabilities by increasing the frequency and intensity of cyclones, floods, and droughts. This is largely due to increased uncertainty around future precipitation levels. These adverse effects have already started to materialize and are expected to increase substantially over the next decades, particularly if efforts to reduce global greenhouse gas emissions by high emitting countries are insufficient. Climate change is also projected to increase average annual temperatures across the country. Climate change is expected to significantly affect Malawi’s economy, mainly because of its dependence on climate-sensitive economic sectors and its low capacity to take adaptation measures due to preexisting macroeconomic vulnerabilities. Malawi’s sensitivity to climate shocks is underpinned by significant environmental degradation, in particular deforestation, watershed degradation, and poor soil management. The two main impact channels are likely to be agriculture and road infrastructure. In agriculture, the increased uncertainty around future precipitation levels in Malawi will likely result in higher variability in crop yields. Climate change is projected to exacerbate preexisting environmental degradation challenges, including soil erosion. These effects are particularly problematic due to Malawi’s high poverty rate, lack of economic diversification (the agriculture sector represents one-third of the economy and employs over 70 percent of the workforce), and significant dependence on rainfed production (about 80 percent of the population). Climate change is likely to significantly impact Malawi’s road infrastructure, mainly due to increased risk of flooding, which would have broader economic and social knock-on impacts.

This edition of the World Economic and Social Survey contributes to the debate on the implementation challenges of the 2030 Agenda for Sustainable Development. In addressing the specific challenge of building resilience to climate change, the Survey focuses attention on the population groups and communities that are disproportionately affected by climate hazards. It argues that, in the absence of transformative policies which coherently address the economic, social and environmental dimensions of development, building climate resilience will remain elusive and poverty and inequalities will worsen. To the extent that the differential impact of climate hazards on people and communities is determined largely by the prevalence of multiple inequalities in respect of the access to resources and opportunities, policies aimed at building climate resilience provide an opportunity to address the structural determinants of poverty and inequality in their multiple dimensions.

Climate change will have a profound impact on human and natural systems, and will also impede economic growth and sustainable development. In this book, leading experts from around the world discuss the challenges and opportunities in building a climate resilient economy and society. The chapters are organised in three sections. The first part explores vulnerability, adaptation and resilience, whilst Part II examines climate resilience-sectoral perspectives covering different sectors such as agriculture, fisheries, marine ecosystems, cities and urban infrastructure, drought prone areas, and renewable energy. In the final part, the authors look at Incentives, institutions and policy, including topics such as carbon pricing, REDD plus, climate finance, the role of institutions and communities, and climate policies. Combining a global focus with detailed case studies of a cross section of regions, countries and sectors, this book will prove to be an invaluable resource.

Climate change is causing unprecedented damage to our ecosystem. Increasing temperatures, ocean warming and acidification, severe droughts, wildfires, altered precipitation patterns, melting glaciers, rising sea levels and amplification of extreme weather events have direct implications for our food systems. While the impacts of such environmental factors on food security are well known, the effects on food safety receive less attention. The purpose of Climate change: Unpacking the burden on food safety is to identify and attempt to quantify some current and anticipated food safety issues that are associated with climate change. The food safety hazards considered in the publication are foodborne pathogens and parasites, harmful algal blooms, pesticides, mycotoxins and heavy metals with emphasis on methylmercury. There is also, a dedicated section on the benefits of forward-looking approaches such as horizon scanning and foresight, which will not only aid in anticipating future challenges in a shifting global food safety landscape, but also help build resilient food systems that can be continually updated as more knowledge is assimilated. By building a more widespread and better understanding of the consequences climate change has on food safety, it is hoped that this document will aid in fostering stronger international cooperation in making our food safer by reducing the global burden of these concerns.

This open access book highlights the complexities around making adaptation decisions and building resilience in the face of climate risk. It is based on experiences in sub-Saharan Africa through the Future Climate For Africa (FCFA) applied research programme. It begins by dealing with underlying principles and structures designed to facilitate effective engagement about climate risk, including the robustness of information and the construction of knowledge through co-production. Chapters then move on to explore examples of using climate information to inform adaptation and resilience through early warning, river basin development, urban planning and rural livelihoods based in a variety of contexts. These insights inform new ways to promote action in policy and praxis through the blending of knowledge from multiple disciplines, including climate science that provides understanding of future climate risk and the social science of response through adaptation. The book will be of interest to advanced undergraduate students and postgraduate students, researchers, policy makers and practitioners in geography, environment, international development and related disciplines.