Variações de temperatura e umidade relativa do ar em área urbana e rural durante o segmento temporal de inverno de 2011 em Contagem e Betim (MG)

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 GeraisBrazil. 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.