A evolução das ilhas de calor noturnas em Três Lagoas/MS no período de fevereiro a junho de 2019

Abstract

Três Lagoas, in the state of Mato Grosso do Sul (MS) and like other Brazilian cities, has seen its growth accelerated in recent years with industrialization and the implementation of eucalyptus forestry, intensifying its urbanization and bringing the problems arising from this growth. The present study aims at analyzing daily nocturnal climatological data from Três Lagoas from February 2nd to June 30th, 2019, based on the theory of the Urban Climate System (S.C.U.) by Monteiro (1975). We use the intensity classification from the heat island of Fernández García (1996). The methodological procedures adopted were the daily measurement of air temperature at 2 fixed points (urban center and nearby rural), from 8 pm to 6 am, and its subsequent treatment in specific software. The results show that during the analyzed period, the formation of nocturnal heat islands was observed in all months, being up to 10.7ºC in February, 5.8ºC in March, 6.2ºC in April, 7.1ºC in May and 7.7ºC in June. Such results show the classification of heat islands of very strong magnitudes. Thus, it is believed that the present study can support urban planning actions to make cities and human settlements more inclusive, safer, and more resilient. In addition, it is emphasized that mitigation measures must be adopted by the public authorities. Três Lagoas, which is in a geographical position that imposes tropicality, a natural environment of high temperatures and urbanization. Lacking adequate planning can intensify the feeling of thermal discomfort for a population.

Keywords

• urban climate
• air temperature
• tropical environment