Hydrology and Earth System Sciences
Hydrology and Earth System Sciences
HESS
Articles | Volume 30, issue 8
Articles | Volume 30, issue 8
https://doi.org/10.5194/hess-30-2473-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Special issue:
https://doi.org/10.5194/hess-30-2473-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 30, issue 8
Research article
 | 
29 Apr 2026
Research article |  | 29 Apr 2026

The dynamics of spatio-temporal droughts in Northeast Brazil

Joao Dehon Pontes Filho, Francisco Assis de Souza Filho, Ályson Brayner Sousa Estácio, Ticiana Marinho de Carvalho Studart, and Eduardo Sávio Passos Rodrigues Martins

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Short summary
We developed a new way to understand how droughts grow, persist, and decline over time and space.  Applied to Northeast Brazil, a region frequently hit by severe droughts, the approach identified four recurring patterns of drought behavior. Most droughts there expand quickly, last for a long time, and end suddenly. Our method can help decision-makers better understand and manage droughts, supporting stronger preparedness and resilience in regions at risk.
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