Benveniste, H., Oppenheimer, M. & Fleurbaey, M. Climate change increases resource-constrained international immobility. Nat. Clim. Chang. 12, 634–641 (2022)

Objective:

• Provide a quantitative, global analysis of international immobility due to resource deprivation caused by climate change

Case:

• Global countries

Methodology:

• Population flow:
  • gravity mode: OLS
  • Robustness: second dataset, reverse causality, shared border
• IAM

Data Source

• Migrant: OECD and World Bank
• Future projection: SSP
• Income and education: OECD

Findings:

• Migrants tend to end up in lower income quintiles when the destination is a developed region and in higher income quintiles when the destination is a developing region
• Most migrants tend to come from richer income levels at origin

• Poorest populations experience higher damages from climate change
• Resources loss through damages are no longer compensated by gains from remittances

• The resources that are available or not to migrate dominate the pull to move towards richer regions
• In most places, resources decrease with climate change for the poorest populations
• Marginal effect of emissions on social welfare (social cost of carbon) are strongly depends on income elascticity of damages

Coding Reference:

• Julia and Data