ONDAS DE CALOR EM ASCENSÃO: ESTUDO DAS OCORRÊNCIAS E INTENSIDADES EM CAMPO GRANDE E TRÊS LAGOAS (2003-2023)

Abstract

This study aims to identify and analyze heat waves (HW) in the cities of Campo Grande and Três Lagoas, from 2003 to 2023, seeking to understand the occurrence, intensity, and seasonality of these events. The research is justified by the relevance of climate studies on HW, a phenomenon accentuated by climate change, which directly impacts the thermal comfort and health of populations. Data on daily maximum temperatures from meteorological stations at INMET were used, applying the IPCC methodology to identify HW, which considers an increase of 5°C in the average maximum temperature of each city for a minimum period of five consecutive days. In Campo Grande, 34 HW occurrences were recorded with a higher concentration between August and November, with 2020 standing out for the greater intensity of the events. In Três Lagoas, 40 events were identified, predominating between September and December, with 2019 having the highest number of occurrences. Since 2014, both cities have shown a significant increase in the frequency and intensity of OCs. The results highlight the importance of public planning to address the impacts of OCs, especially to protect vulnerable populations, in addition to contributing to the understanding of regional climate change and encouraging new studies on the subject in Brazil.