Temporal changes in the weather elements and ETo in Catalão, Goiás, in the period 1961-2011

Revista Brasileira de Engenharia Agrícola e Ambiental

Sediyama, Gilberto C.²  Silva, Thieres G. F. da¹  Alencar, Leonidas P. de²  Mantovani, Everardo C.²  Bufon, Vinicius B.³ 

[1] UFRPE, Serra Talhada;UFV, Viçosa;EMBRAPA Cerrados, Planaltina

关键词: Mann-Kendall;    trend;    climatic alteration     IntroduçãoA evapotranspiração é um componente relevante do ciclo hidrológico sendo o principal responsável pela perda de água nas bacias hidrográficas exercendo grande influência nos processos hidrológicos;   

DOI  :  10.1590/1807-1929/agriambi.v18n08p826-832

学科分类：农业科学（综合）

来源: Universidade Federal de Campina Grande * Centro de Ciencias e Tecnologia

【 摘 要 】

In this study, the existence of trends in the temporal distribution of weather elements and reference evapotranspiration were evaluated, for the municipality of Catalão, in the State of Goiás-Brazil. The Penman-Monteith method and a dataset of 51 years of daily weather parameters were used. The dataset was composed of daily maximum and minimum air temperature, insolation, wind speed, and relative humidity from 1961 to 2011. In order to identify monthly and yearly weather trends, statistical methods of Mann-Kendall, Sen Slope estimator, and linear regression with Student test were used. Due to increases in maximum and minimum temperature, as well as decreases in relative humidity, statistically significant increases in reference evapotranspiration were found for the months of September, October, December and the annual.

【 授权许可】

CC BY-NC