Articles | Volume 23, issue 12
https://doi.org/10.5194/hess-23-4955-2019
https://doi.org/10.5194/hess-23-4955-2019
Research article
 | 
04 Dec 2019
Research article |  | 04 Dec 2019

Assessing water security in the São Paulo metropolitan region under projected climate change

Gabriela Chiquito Gesualdo, Paulo Tarso Oliveira, Dulce Buchala Bicca Rodrigues, and Hoshin Vijai Gupta

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We investigate the influence of anticipated climate change on water security in the Jaguari Basin, which is the main source of freshwater for 9 million people in the São Paulo metropolitan region. Our findings indicate an expansion of the basin critical period, and identify October and November as the most vulnerable months. There is an urgent need to implement efficient mitigation and adaptation policies that recognize the annual pattern of variation between insecure and secure periods.