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The aim of this paper was to investigate the relationship between land use and topography on the variations of temperature and relative humidity in urban and rural municipalities in the Contagem and Betim, south-central state of Minas Gerais- Brazil. The measurement of climatic data occurred during the winter (20/06 - 21/09/2011) continuously and simultaneously, at intervals of sixty minutes, using the automatic sensors (dataloggers - Icel HT model 4000). The weather station INMET, headquartered on the campus of UFMG were used for calibration of instruments and control of the local variations of climatic elements. The data obtained were analyzed in a comparative way in a time sequence taking into account the environmental characteristics (topography and land use) and atmospheric. The temperature of the air taken in urban showed count on "delay" in its development in hourly and lower amplitude when compared to data measured in Betim (rural area). Was attributed these facts to the topographical situation of each of the positions and characteristics of conservation and heat production in the urban environment associated with low specific heat of the materials used in construction, higher density of buildings, relative lack of green areas and participation additional sources of anthropogenic heat. [ABSTRACT FROM AUTHOR]

The objectives this paper were to monitor and analyze the parameters: temperature, relative humidity, air speed and direction wind, to understand as occurred the main frames of discomfort or thermal comfort in two contrasting periods of the 2009 (summer and winter) in Ourinhos. In different environments were installed measuring instruments to measure the meteorological variables. The Beaufort scale allowed classifying speed wind. From the Excel application and from the Software Surfer 8 performed the analysis of variables. Finally, from the diagram of human comfort it was found the points of greatest vulnerability to adverse weather conditions. It was possible to verify that the chosen points are shown in accordance with the expected characteristics, in other words, different structures of the environment affect systematically the dynamics of climate. Thus, Ourinhos, São Paulo State, has a tendency to present phenomena as heat islands. It can be concluded that the production of space of this city has favored the framework of environmental degradation and social. [ABSTRACT FROM AUTHOR]