Climate change impact by country
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Global and Country-Specific Economic Impacts of Climate Change
Research shows that climate change has a significant negative impact on economic growth worldwide, but the effects are not evenly distributed across countries. Persistent increases in temperature above historical norms reduce per-capita real output growth, with projections suggesting that, without mitigation, global GDP per capita could fall by more than 7% by 2100. However, if temperature increases are limited in line with the Paris Agreement, the loss could be reduced to about 1%. The severity of these impacts varies greatly by country, depending on the pace of temperature rise and local climate variability. Notably, both advanced and emerging economies are adversely affected by global climate risk, but country-specific climate shocks are less important than global ones 13.
Disproportionate Impact on Poorer and Hotter Countries
Multiple studies agree that poorer countries, especially those in low latitudes with already high temperatures, are more vulnerable to climate change. These countries are pushed further away from optimal conditions for climate-sensitive sectors, leading to greater economic damages. The primary reason for this vulnerability is geographic location, rather than just wealth or technology. As a result, poor countries are expected to suffer the bulk of climate change damages, while richer, cooler countries are less affected 268.
Within-Country Inequality and Vulnerable Populations
Climate change also increases income inequality within countries. Poorer segments of the population, particularly in developing and hotter countries, experience greater damages from rising temperatures, even after accounting for adaptation capacity. This regressive impact means that the poorest are hit hardest, while the richest suffer the least. In some regions, such as Sub-Saharan Africa, climate change could increase the Gini index (a measure of inequality) by up to six points by 2100. About three-quarters of the variation in climate impacts is due to differences between countries, with the rest due to inequality within countries 4569.
Economic Effects in Developing Countries
Developing countries are especially vulnerable to the long-term negative effects of rising temperatures and carbon emissions on economic growth. While short-term temperature increases can sometimes boost economic activity, these benefits are temporary and do not offset the long-term harm. Developing economies, which often rely on climate-sensitive sectors like agriculture, face significant risks to GDP and other economic indicators. This underscores the need for targeted policies to build resilience and promote sustainable development 710.
Climate Change and Global Inequality
Climate change is expected to slow or even reverse the recent decline in income inequality between countries. The combined effects of climate damages and the costs of mitigation policies could increase global inequality, especially if climate damages are highly regressive. Uncertainties in socioeconomic trends and damage estimates are major factors influencing future inequality. Effective climate mitigation policies are crucial to limit the rise of inequalities between countries .
Conclusion
In summary, climate change has a clear and uneven impact across countries, with poorer and hotter nations facing the greatest risks to economic growth and income equality. The poorest populations within these countries are most vulnerable, and global efforts to limit temperature increases are essential to reduce both economic losses and rising inequalities. Addressing these challenges requires coordinated international action and policies tailored to the needs of the most affected countries and communities.
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