ANALISE DO CAMPO TÉRMICO DA CIDADE DE IRATI/PR: PRIMEIROS EXPERIMENTOS PARA A DEFINIÇÃO DO CLIMA URBANO.

This work deals with the urban planning of cities to medium-sized and small, in particular, examines the formation of urban thermal field analysis based on climate. The city of Irati, located in south-central portion of Parana State, is the object of this study. Considering the theoretical references on which the subject, both in terms of more general (urban planning), and in particular (urban environment), was made a preliminary survey of the essential characteristics of the urban site of the city concerned. After the survey, were selected from collections of data points of temperature at 12 locations, which were monitored by the academic progress of Geography of Unicentro in the period from 23 to 30 April 2008. The physical characteristics of the city showed a sloping geomorphology with guidelines for different sections, showed no uniform pattern. Moreover, the socioeconomic conditions show that the urban density is concentrated in the central area of the city, with a low occupancy in peripheral areas, at least with regard to sealing of soil. Thus, the 12 items selected for collection of data allowed the analysis of different social realities of the city, which examine the influence of urban dynamics in the temperature change. The analysis of results and conclusions have identified the formation of heat islands within the study area; in principle, the hottest area is located in the central city, but at the same time at night, it is an area without distinction to your surroundings and even presenting values of temperature that induce the formation of a cooling island. The influence of urban structure in the spatial variability of air temperature was examined, although there are still doubts about the genesis, because the physical factors (topography, vegetation and water) seem to influence both on the urban structure in their formation. For greater certainty as to the study, new experiments should be conducted, using different methods and methodologies, seeking a better explanation for the variation of climatic elements in the city of Irati.