Study of the direct insolation in the central area of the Santa Maria-RS

Abstract

In the 20th century, the cities became target of many studies, because the expansion of the urban areas provoked transformations in the local climate, compromising the environmental quality and the urban salubrity. Thus, the main objective of this work was to evaluate the distribution of the direct insolation in the area of larger urban density and populacional of the city of Santa Maria-RS, starting from the decline of the Sun along this year on the state of RS. The Thermodynamic canal of climatic perception of the Urban Climate System proposed by Monteiro (1976), it served as theoretical-methodological chorpus, because the insolation controls the temperature indexes and humidity of the air, responsible for the well-being sensation and thermal comfort of the population. In the study of bigger os smaller areas with direct solar incidence, hipsometria letters were elaborated, it urban threshes and orientation of the slopes. Thus, when analyzing them, it was verified that the studied quarters present most of its slopes guided to the quadrants that receive intense direct insolation, could commit the thermal comfort in the days of summer. So, it is concluded, that the understanding of this climatic variable is indispensable to the urban and architectural planning, in the obtaining of better life quality and environmental comfort. Key-Word: Thermal Comfort; Urban Climate; direct insolation; Cartography.