DETECTING TRENDS IN THE RAINY SEASON IN THE STATE OF TOCANTINS

Authors

DOI:

https://doi.org/10.20873/2024_v3_11

Abstract

Precipitation is the main meteorological variable in the hydrological cycle, and the characterization of its behavior is fundamental for the efficient management of water resources. Given this context, the aim of this study is to investigate the occurrence of possible annual trends in the start and end days, duration and accumulated rainfall, using statistical tests, in the rainy season in the state of Tocantins. The trend analysis was based on three non-parametric statistical tests (Mann-Kendall test, Sen's method and Pettitt's test). The results indicated that, for the six municipalities analyzed, in most cities the rainy season is starting later, in three cities the CE is ending later (Palmas, the state capital, and Peixe, in which the CE is ending 0.1 days earlier per year, are not included in this scenario), in four cities the CE is lasting less and in all four cities the total precipitation accumulated during the CE is decreasing. The annual trends found in this study corroborate the results of other studies for the cerrado biome, showing changes in the behavior of the rainy season in Tocantins, possibly - as pointed out by other studies - caused by changes in land use and occupation.

Published

2024-04-22

How to Cite

Cirqueira dos Santos, V., Araújo e Silva, R., & Figueiredo Maciel, G. (2024). DETECTING TRENDS IN THE RAINY SEASON IN THE STATE OF TOCANTINS. DESAFIOS - Revista Interdisciplinar Da Universidade Federal Do Tocantins, 11(3). https://doi.org/10.20873/2024_v3_11