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DRAI: a risk-based drought monitoring and alerting system in Brazil

Author

Listed:
  • Raissa Zurli Bittencourt Bravo

    (Pontifical Catholic University of Rio de Janeiro)

  • Adriana Leiras

    (Pontifical Catholic University of Rio de Janeiro)

  • Fernando Luiz Cyrino Oliveira

    (Pontifical Catholic University of Rio de Janeiro)

  • Ana Paula Martins do Amaral Cunha

    (National Centre for Monitoring and Early Warnings of Natural Disasters – CEMADEN)

Abstract

Drought is recognized as a devastating natural hazard, affecting human livelihood and causing a substantial economic impact. Consequently, experts and decision-makers concentrate on new approaches to reducing droughts’ economic and social effects through studies that focus on the monitoring, prediction, and risk analysis of drought to inform drought preparedness strategies and mitigation measures. This study presents the Drought Risk Assessment Interface (DRAI), a drought early warning system applied to the Brazilian semiarid region based on a composite index of meteorological drought risk. The risk index has two components: hazard and vulnerability. The hazard component considers meteorological indicators, while the vulnerability component encompasses social variables. Based on the opinion of experts from several countries, we define the weight of each of these indicators in the risk index using the analytical hierarchy process. Then, we propose a standard for generating warnings in the DRAI. The warnings are associated with seven drought risk mitigation measures validated by local technicians. We conclude that DRAI is a valuable tool to academics and practitioners, such as Civil Defences that can act directly in risk mitigation actions.

Suggested Citation

  • Raissa Zurli Bittencourt Bravo & Adriana Leiras & Fernando Luiz Cyrino Oliveira & Ana Paula Martins do Amaral Cunha, 2023. "DRAI: a risk-based drought monitoring and alerting system in Brazil," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 117(1), pages 113-142, May.
    • Handle: RePEc:spr:nathaz:v:117:y:2023:i:1:d:10.1007_s11069-023-05852-y
    DOI: 10.1007/s11069-023-05852-y
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    1. Raissa Zurli Bittencourt Bravo & Ana Paula Martins do Amaral Cunha & Adriana Leiras & Fernando Luiz Cyrino Oliveira, 2021. "A new approach for a drought composite index," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 108(1), pages 755-773, August.
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