Estudo da evolução de índices climáticos de conforto térmico no estado do Rio Grande do Sul

Abstract

It’s notable that summers and winter are becoming increasingly more severe, as there is a increase on the occurrence of extreme events (storms, droughts), affecting the thermal comfort, security and quality of life of the population. This way, the present study intent to analyze the thermal comfort data since 1980 to 2020 of the State of Rio Grande do Sul, in order to verify the evolution of the thermal comfort and identify if there is any climate trend , utilizing climate data derived of ERA-5, being the UTCI (Universal Thermal Climate Index) the main variable for this study. The results show that the RS has thermal discomfort by heat and cold, and that some regions are prone to be hotter, while others regions to be colder, the comfort class according to the UTCI is of strong heat in the summers, and moderate cold in the winters, but in years where these seasons are more rigorous, it reaches classes of very strong heat. The climatie tendency of RS is that the UTCI values continues to rise, being the last ten years (2010 - 2020) the decade in which the highest values were obtained, fact influenced by global warming. Another important result is the tendency that the autumns are getting colder, while the springs are getting hotter, which indicates that in the future there will be no more 4 distinct seasons, and only having 2 seasons in the year, one season of heat and another season of cold. Keywords: Thermal Confort. Temperature. UTCI.