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Migrants as First Responders: A Global Estimate of Disaster-Driven Remittances

Author

Listed:
  • Andrea Vismara
  • Ola Ali
  • Carsten Kallner
  • Guillermo Prieto-Viertel
  • Rafael Prieto-Curiel

Abstract

International remittances represent a vital source of disaster adaptation finance for households around the world, yet their responsiveness to environmental disasters remains poorly quantified. We reveal a previously unmeasured global macro-financial system of international migrant diasporas remittances response to the occurrence of disasters in the country of origin. We do so by developing a structural model simulating individual remittance decisions, calibrated with global disaster records and bilateral monthly remittances flow data from the period 2010-2019. Our analysis reveals that approximately 332 billion USD (5.46\% of total remittances) were mobilized specifically in response to earthquakes, floods, storms, and droughts over the decade. Earthquakes triggered the largest remittance responses per person affected, while droughts elicited the smallest. The model also identifies significant variation in diaspora groups' capacity to activate financial support. These findings establish remittances as a substantial yet limited form of disaster finance, highlighting their importance and limitations in building resilience against future environmental shocks.

Suggested Citation

  • Andrea Vismara & Ola Ali & Carsten Kallner & Guillermo Prieto-Viertel & Rafael Prieto-Curiel, 2025. "Migrants as First Responders: A Global Estimate of Disaster-Driven Remittances," Papers 2512.16373, arXiv.org.
    • Handle: RePEc:arx:papers:2512.16373
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    References listed on IDEAS

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