Análise de índices para monitoramento de seca na região hidrográfica do Vale do Jaguaribe, Ceará.

Abstract

Drought are a usual event associated with the climatic variability, that impact on the several water consumers sectors. The phenomenon quantification can provide valuable support in promoting early proactive risk warning actions. Thus, this work aims to compare the SPI, scPDSI and SPEI, for the region of the Jaguaribe hydrographic basin, in Ceará. A comparative analysis between the proposed indices allowed to infer similarity between the critical years pointed in the extreme drought event started in 2012. The drought frequency points to the existence of events from mild to extreme drought, however only SPI records drought extreme indices. In these terms, analyzing and quantifying drought risks based on the analysis of the indices can contribute to the formulation of public policies which seek to mitigate the drought effects and promote early warning actions in water scarcity scenarios.