Publication: Climate Change Vulnerability, Adaptation and Public Debt Sustainability in Small Island Developing States
Loading...
Published
2024-06-04
ISSN
Date
2024-06-04
Author(s)
Editor(s)
Abstract
Small Island Developing States (SIDS) are a group of 39 United Nations (UN) member states and 18 dependent territories mostly located in the Caribbean and Oceania. They are among the most vulnerable countries to losses and damages from climate change globally, and they are especially exposed to tropical cyclones and sea level rise. This paper evaluates the climate change-related vulnerabilities of the SIDS. It uses data from the International Disaster Database (EM-DAT), to examine the magnitude of damages incurred over the last three decades and conducts an event study analysis to examine the fiscal impacts of large tropical cyclone disasters in the last decade. SIDS need to invest substantial resources over the long term for climate change adaption. The paper reviews the limited studies that have been conducted so far, on the potential long-term costs of effective adaptation investment programs. Using the most recent Debt Sustainability Analyses of SIDS, the paper discusses the challenges countries with high public debt levels face and whether a general program of debt relief might be a feasible way to fund the adaptation investment requirements of SIDS. Finally, the paper discusses the type of assistance that SIDS need to strengthen their resilience to climate change in a cost-effective manner, and the role development partners can play in supporting climate-resilient development.
Link to Data Set
Citation
“Brownbridge, Martin; Canagarajah, Sudharshan. 2024. Climate Change Vulnerability, Adaptation and Public Debt Sustainability in Small Island Developing States. Policy Research Working Paper; 10787. © World Bank. http://hdl.handle.net/10986/41651 License: CC BY 3.0 IGO.”
Digital Object Identifier
Associated URLs
Associated content
Other publications in this report series
Publication Climate and Social Sustainability in Fragility, Conflict, and Violence Contexts(Washington, DC: World Bank, 2026-01-07)Climate change is widely recognized as a driver of violent conflict, but its broader social effects remain less understood. Ignoring these dimensions risks a vicious cycle where climate policies might undermine socially just adaptation. Evidence is still limited on how climate shocks influence political participation, trust, or migration. This paper helps fill that gap by examining links between climate change, conflict, and social sustainability, with a focus on inclusion, resilience, cohesion, and legitimacy. Using secondary data from 2019–24, the study applies simple correlation-based methods to test three hypotheses on the nature, severity, and composition of these associations. The analysis combines multiple climate impact measures, new conflict classifications, recent social sustainability frameworks, and controls for population and geography. The results reveal strong correlations—not causation—between climate events and contexts of fragility, conflict, and violence. Climate impacts are most pronounced in both national and subnational conflict settings. The study also finds robust links between fragility, conflict, and violence and low levels of social sustainability, reflecting its role as both a driver and consequence of conflict. Some dimensions—such as violent events and insecurity—appear weaker in areas most affected by climate shocks. Two of the hypotheses are supported, and one remains inconclusive.Publication The Macroeconomic Implications of Climate Change Impacts and Adaptation Options(Washington, DC: World Bank, 2025-05-29)Estimating the macroeconomic implications of climate change impacts and adaptation options is a topic of intense research. This paper presents a framework in the World Bank's macrostructural model to assess climate-related damages. This approach has been used in many Country Climate and Development Reports, a World Bank diagnostic that identifies priorities to ensure continued development in spite of climate change and climate policy objectives. The methodology captures a set of impact channels through which climate change affects the economy by (1) connecting a set of biophysical models to the macroeconomic model and (2) exploring a set of development and climate scenarios. The paper summarizes the results for five countries, highlighting the sources and magnitudes of their vulnerability --- with estimated gross domestic product losses in 2050 exceeding 10 percent of gross domestic product in some countries and scenarios, although only a small set of impact channels is included. The paper also presents estimates of the macroeconomic gains from sector-level adaptation interventions, considering their upfront costs and avoided climate impacts and finding significant net gross domestic product gains from adaptation opportunities identified in the Country Climate and Development Reports. Finally, the paper discusses the limits of current modeling approaches, and their complementarity with empirical approaches based on historical data series. The integrated modeling approach proposed in this paper can inform policymakers as they make proactive decisions on climate change adaptation and resilience.Publication Institutional Capacity for Policy Implementation: An Analytical Framework(Washington, DC: World Bank, 2026-01-07)State capacity is an important prerequisite for policy implementation, yet at the country level it is difficult to measure, assess, and reform. This paper proposes a focus on institutional capacity: the ability of public institutions to implement the specific policy mandates for which they are responsible. Based on a review of existing literature, the paper defines the different dimensions that compose institutional capacity and groups them into two cross-cutting categories: organizational dimensions (personnel, financial resources, information systems, and management practices) and governance dimensions (transparency, independence, and accountability). The paper proposes measures for organizational and governance dimensions using existing data, shows intra-institutional variation of these measures within countries, and discusses how new data could be collected for better measurement of these concepts. Finally, the paper illustrates how the framework can be used to diagnose the sources of common problems related to weak policy implementation.Publication South Africa’s Fragmented Cities: The Unequal Burden of Labor Market Frictions(Washington, DC: World Bank, 2026-01-08)Using high-resolution administrative, census, and satellite data, this paper shows that South African cities are characterized by spatial mismatches between where people live and where jobs are located, relative to 20 global peers. Areas within 5 kilometers of commercial centers have 9,300 fewer residents per square kilometer than expected, which is 60 percent below the global median. Poor, dense neighborhoods are most affected. In Johannesburg, a 10-percentile increase in distance from the nearest business hub corresponds to a 3.7-percentile drop in asset wealth (a proxy of household wellbeing) and 4.9-percentile drop in employment. In Cape Town, the declines are 4.0 and 3.7 percentiles, respectively. Employment is 87 percent lower in the poorest decile than the richest in Johannesburg and 61 percent lower in Cape Town. These findings suggest that South Africa’s spatial organization of people and economic activity constrains agglomeration and reinforces inequality. This methodology provides a scalable and standardized data-driven framework to analyze spatial accessibility and agglomeration frictions in complex, data-constrained urban systems.Publication Investment in Emerging and Developing Economies(Washington, DC: World Bank, 2026-01-07)The world faces a pressing challenge to meet key development objectives amid slowing growth and rising macroeconomic and geopolitical risks. With the number of job seekers rising rapidly, infrastructure shortfalls continuing to be large, and climate costs mounting, the case for a significant investment push has never been stronger. Yet the capacity to respond in many emerging markets and developing economies has eroded. Since the global financial crisis, investment growth has slowed to about half its pace in the 2000s, with both public and private investment weakening. Foreign direct investment inflows—a critical source of capital, technology, and managerial know-how—have also fallen sharply and become increasingly concentrated, leaving low-income countries with only a marginal share. The risks of further retrenchment are significant, as trade tensions, policy uncertainty, and elevated debt levels continue to weigh on investment. Reigniting momentum will require ambitious domestic reforms to strengthen institutions, rebuild macro-fiscal stability, and deepen trade and investment integration—the foundations of a supportive business climate. At the same time, international cooperation is indispensable. A renewed commitment to a predictable system of cross-border trade and investment flows, combined with scaled-up financial support and sustained technical assistance, is essential to help emerging markets and developing economies—especially low-income countries and economies in fragile and conflict situations—bridge financing gaps and implement the domestic reforms needed to restore investment as an engine of growth, jobs, and development.
Journal
Journal Volume
Journal Issue
Collections
Related items
Showing items related by metadata.
Publication The Challenges to Long Run Fiscal Sustainability in Romania(2012-01-01)Romania, along with many other countries in the European Union, faces daunting fiscal challenges. Fiscal balances deteriorated sharply following the global economic crisis, forcing Romania to implement a fiscal consolidation that was one of the largest in the European Union, but which may not be sustainable without a recovery of economic growth. Although the ratio of public debt to gross domestic product is still relatively modest, at around 35 percent, long-term fiscal solvency is threatened by the costs of funding the public pension system in the face of adverse demographic shifts over the next 50 years. Because of widespread tax evasion, the tax system in Romania is one of the least efficient in the European Union. Tax reforms that can reduce the amount of tax lost to evasion and fraud could make a major contribution to enhancing fiscal sustainability.Publication GEF and Small Island Developing States(Washington, DC, 2005)The report highlights the GEF's work with small island developing states (SIDS) on key natural resource issues -climate change, biodiversity, international waters, and land degradation. It also describes the GEF's strategic priorities for SIDS over the next five years, recognizing the interrelatedness of SIDS' global environmental problems and their links to economic and social development. The Global Environment Facility (GEF) hopes this report will contribute to discussions at the International Meeting for the 10-Year Review of the Barbados Program of Action. The GEF fully supports the Barbados Program of Action as a fundamental framework for the sustainable development of SIDS and looks forward to continuing to work with SIDS on its implementation in areas consistent with the GEF's mandate.Publication How Should Fiscal Policy Respond to the Economic Crisis in the Low Income Commonwealth of Independent States? Some pointers from Tajikistan(2009-06-01)The paper analyses how the global economic crisis will affect the economies of the low income Commonwealth of Independent States (CIS) and discusses the fiscal measures which can be taken to help mitigate the adverse impact of the crisis. It focuses on Tajikistan, the poorest member of the CIS but also highlights similarities with the economies of Armenia, the Kyrgyz Republic and Moldova. The main channels through which the global economic crisis will affect the low income CIS economies is through a sharp reduction in remittances from migrant workers in Russia and lower export earnings. The adjustment to this external shock will involve a reduction in imports, private consumption, domestic output and government revenue. Fiscal policy, constrained by very limited macroeconomic and fiscal space, faces acute challenges. Maintaining budget targets for fiscal deficits and domestic borrowing in the face of revenue shortfalls will lead to a tightening of the fiscal stance, exacerbating recessionary pressures and making it very difficult to protect priority social expenditures from cuts. To avoid these outcomes, external support from donors, preferably in the form of quick disbursing budget support, is required. If additional external budget support can be mobilized, the priorities for fiscal policy should be to protect spending on budgeted social sector programs and, if sufficient budget resources are available, to implement a program of labor intensive repair and maintenance of public infrastructure to provide employment for returning migrant workers. Tax cuts are unlikely to be an effective use of scarce budget resources, either to stimulate the economy or protect the incomes of the poor. Up scaling existing social assistance programs may be a feasible way to protect the poor in some low income CIS countries provided they are not as poorly targeted as in Tajikistan.Publication Rapid Review of Water Knowledge for Pacific Small Islands Developing States(World Bank, Washington, DC, 2018-06)The rapid review confirms that Pacific Small Island Developing States (SIDS) are socially, culturally, and environmentally diverse, with some features in common, and which collectively make them unique to other regions of the world: Small island countries have uniquely fragile water resources due to their small size, lack of natural storage, competing land use, and vulnerability to natural and anthropogenic hazards, including drought, cyclones, and urban pollution (with between 0.5 percent to 6.6 percent of gross domestic product (GDP) being lost annually to disasters). Rurally dominated populations are widely dispersed geographically as many small communities, while most capital cities include significant informal settlement populations and are subject to rapid urbanization (a more than 3 percent yearly increase in urban population growth in most Melanesian countries is projected between 2015 and 2020) (Mycoo and Donovan 2017).Publication Resilient Transport in Small Island Developing States(Washington, DC: World Bank, 2022-02-28)Small island developing states (SIDS) are among the most exposed, vulnerable countries in the world to natural hazards and the impacts of climate change. SIDS are already experiencing significant economic and social losses from climate change impacts. Extreme weather events such as flooding and hurricanes significantly affect the transport sector, with damage from such events accounting for a large percentage of total infrastructure damage costs. The need for climate adaptation is recognized in SIDS’ nationally determined contributions to the Paris Agreement under the United Nations Framework Convention on Climate Change. The World Bank supports its clients in implementing nationally determined contribution objectives and actions. The World Bank’s programmatic technical assistance, Resilient Transport in Small Island Developing States, implemented with the aim of enhancing the resilience of the transport sector in SIDS, was delivered in three phases. The objective of this report is to help practitioners integrate climate resilience considerations into transport asset management and thus enhance climate resilience in the transport sector of SIDS (Phases 2 and 3 of the technical assistance). The report starts by introducing the topic of natural hazards and climate change in SIDS and how they affect the transport sector. The report describes how governments can develop resilient transport asset management systems (TAMS) and then summarizes the activities implemented in four SIDS, Cape Verde in Africa, Saint Vincent and the Grenadines in the Caribbean, and Solomon Islands and Vanuatu in the Pacific,and shares lessons learned to improve the approach and framework. Finally, the report introduces an online training course on resilient TAMS and the i-Knowledge platform
Users also downloaded
Showing related downloaded files
Publication Jobs in a Changing Climate: Insights from World Bank Group Country Climate and Development Reports Covering 93 Economies(Washington, DC: World Bank, 2025-11-05)The World Bank Group’s Country Climate and Development Reports (CCDRs) provide a crosscutting look at how countries’ development prospects, and the job opportunities they offer to their people, can be threatened by climate impacts and supported by climate policies. Climate change and policies affect jobs through impacts on productivity, energy and material efficiency, and physical, human, and natural capital. They can also transform employment opportunities, especially through complementary measures that help workers and firms adapt to and benefit from new technologies and production practices. Prepared by the World Bank, the International Finance Corporation (IFC), and the Multilateral Investment Guarantee Agency (MIGA), CCDRs integrate country perspectives, climate science and economic modeling, private sector information, and policy analysis to assess how countries can successfully grow and develop their economies and create jobs despite increasing climate risks and while achieving their climate objectives and commitments. Each CCDR starts from the country’s development priorities, opportunities, and challenges, and is developed in close consultation with governments, businesses, and civil society, ensuring the recommendations reflect national priorities. By combining evidence on adaptation, resilience, and emissions pathways, CCDRs highlight where climate action can reinforce development and job creation, and where targeted policies are needed to manage risks and smooth labor market transitions. Taken together, these elements can help create local jobs, ensure economic transitions are just and inclusive, and equip workers and firms to navigate the disruptions and opportunities of a changing climate and changing technologies.Publication Mongolia Country Climate and Development Report(Washington, DC: World Bank, 2024-10-22)Mongolia’s development prospects are uniquely challenged by both the impacts of climate change and the global shift toward a low-carbon economy. The country’s efforts toward decarbonization pose significant challenges given the structurally high-emission intensity of its economy. While challenging, climate action also presents Mongolia with opportunities to achieve important development benefits. The effects of climate risks and the shift away from coal will have diverse impacts across different regions, communities, and socioeconomic levels. The report assesses the critical interconnections between Mongolia’s development ambitions and climate change action and identifies ways to transition to a more economically diversified, inclusive, and resilient development path. It highlights key climate and transition risks affecting Mongolia’s future development and presents a pathway to enhance climate mitigation and adaptation. The report also makes a case for strengthening policies to enhance resilience to climate change and ensure a just transition, particularly for the most vulnerable. The report is structured as follows: section 1 gives introduction. Section 2 delves into the linkages between development and climate in Mongolia and presents model-based findings on the economic and poverty impacts of climate change under different scenarios. Section 3 covers four in-depth sectoral analyses. The first two mainly focus on adaptation to climate change in the agriculture and water sectors. The third considers prospects for the extraction sector, while the fourth sectoral analysis focuses on decarbonizing power and heat generation. Section 4 shifts the focus to how the government can boost resilience for climate-vulnerable populations. Section 5 outlines options for mobilizing private and public financing and private investments to support the green transition. Section 6 examines the existing institutional and governance structure for climate action and presents recommendations to improve its effectiveness, and section 7 concludes with a framework for prioritizing the policy actions outlined in this report.Publication Guinea-Bissau Country Climate and Development Report(Washington, DC: World Bank, 2024-10-23)Guinea-Bissau is endowed with a wealth of natural resources, with the highest natural capital per capita in West Africa (US3,874 dollars per capita), which could be leveraged for sustainable and resilient growth. However, Guinea-Bissau faces significant development hurdles, such as high poverty rates, political instability, and economic challenges, including an over-reliance on cashew nuts. Rural poverty has increased, and the nation's infrastructure, education, and health care systems are underdeveloped. Climate change poses a severe threat, potentially impacting agriculture, fisheries, and infrastructure. Without adaptation, it could lead to a significant cut in real GDP per capita (minus 7.3 percent by 2050) and increase in poverty (with up to over 200,000 additional poor by 2050, that is, 5 percent of the expected population, in the worst scenario). The country's low greenhouse gas emissions are expected to rise, mainly due to agriculture and land-use changes, with deforestation being a major contributing factor. Although Guinea-Bissau is a low emitter, it has high mitigation ambitions, targeting a 30 percent reduction in greenhouse gas emissions by 2030. The Nationally Determined Contribution outlines significant climate actions, with initiatives focused on forest conservation, sustainable agriculture, and community development. However, the country's political instability, institutional weaknesses, and limited financial resources pose challenges to implementing these climate commitments, which depend heavily on external funding. The financial sector's underdevelopment and vulnerability to external shocks limit its ability to support green investments, though reforms could enhance resilience. Guinea-Bissau must consider its climate financing as development financing and vice-versa, engage the private sector, and integrate climate goals with national development plans to ensure a sustainable future. Concessional climate financing is vital due to the underdeveloped financial sector and the government’s limited borrowing capacity. Addressing Guinea-Bissau's vulnerability to climate change and its structural issues requires a cohesive approach that integrates development and climate strategies. This could involve improving governance, diversifying the economy, protecting natural capital, developing human capital, and investing in sustainable agriculture and infrastructure. The transition to a more sustainable and inclusive development pathway that supports economic growth is possible, but requires focusing on key strategic sectors, enhancing institutional capacity, and creating the conditions to mobilize finance. As a highly vulnerable country, there are myriad needs in the different sectors; however, to be more efficient and effective, Guinea-Bissau should prioritize actions in a few sectors, especially actions on biodiversity, agriculture, and social protection. Low carbon development, especially in energy and forestry sectors, could provide cost-efficient solutions and attract climate finance, including from the private sector, which will support the overall development agenda.Publication Kyrgyz Republic Country Climate and Development Report(Washington, DC: World Bank, 2025-11-03)This Country Climate and Development Report (CCDR) on the Kyrgyz Republic aims to support the country’s development goals amid a changing climate. The CCDR considers two policy scenarios up to 2050: the business-as-usual (BAU) and high-growth scenarios. As it quantifies the likely impacts of climate change on the Kyrgyz economy between now and 2050, the report highlights key government actions to best prepare for and adapt to climate impacts (referred to as “with adaptation” measures), with a particular focus on the time horizon up to 2030. The CCDR also outlines a path to net zero emissions by 2050 (referred to as “with mitigation” measures, “decarbonization,” or, simply, “net zero 2050”), highlighting associated development co-benefits.Publication Comoros Country Climate and Development Report(Washington, DC: World Bank, 2025-06-18)The Union of the Comoros (The Comoros) has significant vulnerability to climate change-related risks but has considerable opportunities to strengthen preparedness and resilience against these challenges. According to the Notre Dame Global Adaptation Index, the Comoros is the 29th-most vulnerable country to climate change and the 163rd most ready to adapt (out of 191). The Comoros archipelago is exposed to many natural hazards that adversely affect the country’s natural capital, people, and physical infrastructure. In 2014, the economic cost of climate-related disasters was estimated at 5.7 million dollars annually, equivalent to 9.2 percent of Gross Domestic Product (GDP). Between 2018 and 2023, as many as 11 tropical depressions or cyclones impacted the country, with Cyclone Kenneth causing the greatest damage, equivalent to 14 percent of GDP, resulting in total economic growth falling from 3.6 percent in 2018 to 1.9 percent in 2019. More than 345,000 people (40 percent of the population) were affected by the cyclone, with 185,000 people experiencing severe impacts and 12,000 people displaced. However, there is an opportunity for the country to grow more robust and shock-responsive, and to establish pre-positioned funding mechanisms to enhance future crisis response efforts. For the Comoros, adaptation and climate-resilient development are the key climate change focus areas, with the country projected to face 836 million dollars 2050 in additional costs due to climate-related impacts. Current plans to adapt to the impacts of climate change in the Comoros include efforts to improve water management, strengthen coastal protection, and develop climate-smart agriculture practices. Given the country’s reliance on its natural resource base for economic growth and mobility, protection of these resources from climate change will be essential for promoting resilient growth and development. In addition to growing the adaptive capacity of the country’s natural resource sectors, strategic economic diversification will be important to help minimize future climate impacts, and development activities will need to be undertaken in such a way as to attract low-carbon co-benefits. The Union of the Comoros is committed to addressing climate change through its Nationally Determined Contribution (NDC) and national priorities. The country’s NDC (which was revised in 2021 for a ten-year horizon) sets ambitious targets, with a goal of reducing greenhouse gas emissions by 23 percent by 2030. The country also plans to significantly increase the share of renewable energy in its energy portfolio, reaching 33 MW by 2030. This will not only promote low-carbon development but also reduce the country’s dependency on imported oil and coal, which currently make up 95 percent of the energy mix. Additionally, the Comoros has declared its intention to increase CO2 removals by 47 percent by 2030, compared to BAU.