TEMPORAL VARIABILITY OF DROUGHT PERIODS IN THE MUNICIPALITY OF CAMPINA GRANDE – PB

Authors

  • Welinagila Grangeiro Sousa
  • Antônia Silânia Andrade
  • Ricardo da Cunha Correia
  • Santana Lívia Lima
  • Anddreza Maddalena Universidade Federal da Paraíba
  • Khyson Gomes Abreu

Keywords:

Extreme temperatures, precipitation, climate trends

Abstract

Understanding rainfall variability is crucial for agricultural planning and water resource management. Therefore, the objective of this study was to identify and understand the temporal variability of dry periods in the municipality of Campina Grande, Paraíba state, from 2000 to 2023, using drought indices and statistical trend analysis methods. The results confirmed the strong seasonality of rainfall in this region through the SPI-12 and DSI-12 indices. Severe droughts were observed between 2012 and 2021, with 2015, 2016, and 2017 being the most critical years. The DSI-12 is more sensitive to prolonged droughts, reinforcing its complementary use in monitoring. According to the Mann-Kendall and Pettitt tests, significant negative trends were identified, with changes in the series starting in 2011, indicating an intensification of droughts in the region.

 

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Published

2026-01-08

Issue

Vol. 20 No. 3 (2025)

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