Seasonal Study on Changing Trends in Climatic Extremes Indicators in the Brazilian Territory

Conteúdo do artigo principal

Filipe Júnio Santos Coelho
https://orcid.org/0009-0004-8050-0255
Marconi A. Pereira
https://orcid.org/0000-0002-4292-4987
Clodoveu A. Davis Junior
https://orcid.org/0000-0002-7327-848X
Natã G. Silva
https://orcid.org/0000-0002-3065-3999
Telles T. da Silva
https://orcid.org/0000-0002-3810-8688

Resumo

This study focuses on analyzing trends in extreme climate indices in 11 different regions of Brazil on a quarterly basis, from 1961 to 2019. The aim is to identify changes in climate trends over time, particularly in terms of increasing climatic extremes, such as maximum and minimum temperature. Statistical tests were used to determine the presence of trends and the value of the changes. This study reveals that in most cities exhibited the minimum temperature recorded tends to increase in at least two quarters per year, while only a few did not show significantly increasing trends in maximum temperature. In terms of extreme temperature indices, a few regions presented statistically significant trends, such as Belém and Cuiabá, which showed a reduction in the occurrence of cold nights and hot days, respectively, across all quarters. Significant increases in the percentage of hot days and hot nights, as well as in maximum, minimum, and average temperatures across different regions, were observed. Additionally, in some seasons of the year precipitation events changed, with an increase in the concentration of rain in short periods and in the number of consecutive days without precipitation.

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COELHO, F. J. S.; PEREIRA, M. A.; DAVIS JUNIOR, C. A.; SILVA, N. G.; SILVA, T. T. da. Seasonal Study on Changing Trends in Climatic Extremes Indicators in the Brazilian Territory. Revista Brasileira de Cartografia, [S. l.], v. 75, 2023. DOI: 10.14393/rbcv75n0a-68545. Disponível em: https://seer.ufu.br/index.php/revistabrasileiracartografia/article/view/68545. Acesso em: 15 out. 2024.
Seção
Seção Especial "Brazilian Symposium on GeoInformatics - GEOINFO 2023"

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