Overview
- Researchers estimate 2,500–2,718 excess deaths each monsoon season during 2006–2015, more than 8% of monsoon fatalities and nearly ten times official tallies.
- The study values mortality losses at about $1.2 billion per year, totaling roughly $12 billion over the decade examined.
- Over 80% of rainfall-attributed deaths occurred among slum residents, with heightened risks for children under five and for women.
- The team matched individual death records to hourly rainfall and tide heights across 89 postal codes, identifying impacts by age, gender, and slum status.
- Projections indicate a 5 cm sea-level rise could lift rainfall-related mortality share by about 7% and a 15 cm rise by about 21%, a finding feeding policy discussions at COP30 on loss-and-damage and urban adaptation.