environment
At least one G20 coastal jurisdiction completes and documents a managed-retreat relocation of more than 10,000 residents attributed to sea-level rise by 2050.
Last revised Sep 11, 2026.
criteria definedcumulative
Current estimate
probability this has happened by each date
2035
not yet estimated
2050
not yet estimated
2100
not yet estimated
Resolution criteria
- 2035
- Any G20 jurisdiction's planning or disaster-management authority has documented a completed relocation of over 10,000 residents attributed to sea-level rise.
- 2050
- Cumulative documented managed-retreat relocations attributed to sea-level rise across G20 jurisdictions exceed 100,000 residents.
- 2100
- At least one G20 jurisdiction has documented permanent abandonment of a populated coastal area (city or county-scale) attributed to sea-level rise.
Sources
No sources are attached to this record.