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Comment: Please see WP:INTREFVE for instructions on adding inline citations to your draft. MCE89 (talk) 11:18, 12 December 2025 (UTC)
The Climate Inequality Index is an indicator used to measure how greenhouse gas emissions, climate responsibility, and the impacts of global warming are distributed across populations. The index highlights the unequal contribution to climate change between groups, as well as the disproportionate exposure of vulnerable communities to environmental risks. It is widely used in climate finance, environmental economics, and social policy to assess the links between global inequality and climate change.
Origins and development
[edit]The concept emerged during the 2010s, as international institutions, research centers, and climate economists began documenting disparities in emissions between countries, income groups, and individuals. Research produced by organizations such as the World Inequality Lab, the United Nations Development Programme (UNDP), and various reports from the Intergovernmental Panel on Climate Change (IPCC) contributed to the development of methodologies for quantifying climate inequality.
The objective behind the index is to determine who contributes the most to climate change and who suffers the most from it. By integrating economic and social variables, it offers a more detailed understanding of global climate responsibilities than national averages alone.
Methodology
[edit]The Climate Inequality Index is based on different sources of information, including:
- data on emissions from territories and consumption
- information about income and wealth distribution
- climate risk predictions
- economic losses from extreme weather events
- demographic data
Most studies divide people or households into groups such as the richest 10%, the middle 40%, and the poorest 50%. The index also looks at how exposed countries or regions are to climate risks and how well they can adapt. This helps researchers show that carbon footprints usually increase as income rises.
Key findings
[edit]Studies using this index often show similar results:
- High-income groups have much larger carbon footprints. A small part of the world population produces a big share of total emissions.
- Countries that industrialized early have caused more emissions over time. Most of the extra CO₂ in the atmosphere since the 19th century comes from these countries.
- Low-income and vulnerable people face the worst climate impacts. Heatwaves, floods, crop failures, and damage to buildings are harder on communities with fewer resources.
- The ability to adapt to climate change is very different across countries. Poorer countries often struggle to invest in climate adaptation and protection.
Use in public policy
[edit]The index is used to guide climate policy decisions, for example:
- how climate finance is distributed
- strategies for a fair transition to greener economies
- assessing social impacts of policies
- discussions about progressive carbon taxes
- negotiations at United Nations climate conferences (COP)
It also helps NGOs, researchers, and governments reduce environmental and social inequalities.
Reception and limitations
[edit]The index is appreciated for showing climate inequalities clearly and giving more detail than just looking at country emissions. However, it has some limits:
- missing emission data in some regions
- difficulty measuring imported emissions
- differences in methods between institutions
- uncertainty in regional climate predictions
Even with these limits, the index is widely used to link climate change and global inequality.
Reference
[edit]- ^ World Inequality Lab. Climate Inequality Report 2023. Paris School of Economics, 2023.
- ^ United Nations Development Programme. Human Development Report 2020: The Next Frontier – Human Development and the Anthropocene. UNDP, 2020.
- ^ Intergovernmental Panel on Climate Change. Sixth Assessment Report (AR6), Working Group II: Impacts, Adaptation and Vulnerability. IPCC, 2022.
- ^ Hubacek, K., Baiocchi, G., Feng, K., & Patwardhan, A. “Poverty eradication in a carbon-constrained world.” Nature Climate Change, vol. 7, 2017, pp. 1–5.
- ^ Oxfam International. Confronting Carbon Inequality: Putting Climate Justice at the Heart of the COVID-19 Recovery. Oxfam, 2020.
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