O campo térmico e a qualidade ambiental urbana em Chapecó/SC

• Autor(a) principal: Costa, Eduino Rodrigues da [UNESP]
• Data de Publicação: 2015
• Tipo de documento: Tese
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://hdl.handle.net/11449/132932
• topic: Thermal field; Heat island; Thermal comfort; Chapecó-SC; Campo térmico; Ilha de calor; Conforto térmico; Qualidade ambiental urbana; Urban environmental quality

This work aimed to study the thermal field and urban environmental quality of Chapecó, medium-sized city located in the western region of Santa Catarina. To study the thermal field of Chapecó in urban canopy level had to be established paths (mobile transects) where in specific weather conditions of each month of the year 2014, and times (06, 15 and 21 hours) samples were taken from climate data (air temperature) in order to identify and spatialize the occurrence of climatic phenomena such as urban heat islands. To acquire the air temperature data in the urban area of Chapecó, we used the methodology of mobile transects, which is the automatic and simultaneous acquisition of climate data along predetermined paths within a given urban area. To assess and map the environmental quality of the urban area of Chapecó / SC was used a methodology developed by adapting Nucci (1996) to study the environmental quality and the urban density in the Santa Cecilia district, located in São Paulo. As a result, it is emphasized that the atmospheric heat island defined better in the Centro neighborhood (horizontalized and vertical) in the time of 15 and 21 hours in all episodes rabbits. On time of 06 hours, it was not possible to note the influence of the city on the thermal field, since this time is the radiative cooling associated with the negative balance of radiation. The heat island showed greater magnitude in the winter season and episodes of time under the control of polar weather systems (Polar Atlantic Mass, Polar Continental Mass). The size of the city and intensity of environmental changes brought about by human action was not recorded weak magnitude of heat islands. Regarding the human thermal comfort registered in Chapecó, it noted that the heat island is responsible for the observed thermal discomfort in the types of associated time tropical weather systems in the summer and the thermal comfort in episodes of time associated with polar systems in the winter, especially in its maximum intensity and heating time ( 15 hours). For environmental quality, it was found that low-quality areas corresponded central city areas, which have been identified and mapped negative attributes that reduce the quality of the environment. The average heat islands, strong and very strong magnitude is precisely established in inner-city areas where environmental quality is low. We conclude that the city of Chapecó for its midsize and space of a dynamic metropolis, has the ability to generate a local climate; and environmental changes occurring in it contribute to reducing the quality of the environment favoring the emergence of heat islands and thermal discomfort.