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Copyright of Acta Scientiarum: Human & Social Sciences is the property of Universidade Estadual de Maringa and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

This paper presents a study about the temperature and relative humidity difference registered between the urban and the rural area of Tapejara/PR, in order to check the occurrence of heat islands in small cities. The population of the city was around 15.572 inhabitants and is located in the southwest of Paraná. For this essay, we used the proposed method of Urban Climate System, by Monteiro (1976), by means of thermodynamic system, and analyzed the July 2014 meteorological of the Meteorological Station of Cianorte/PR made available by the Simepar Institute. There were installed digital thermohygrometers in six important points of the urban area and one point of the rural area for data gathering of temperature and relative humidity, in order to analyze the thermohigrometrical differences between the seven points in three representative periods of the day for the month of July 2014. The results show important differences in these elements, marking the formation of own microclimates, and the existence of urban heat island in the winter time. The choise of the winter analysis was the fact that this is the season considered more critical by the local population, as well as being the lowest total rainfall period coincides with the practice of burning straw sugar cane, since the municipality has in the sugar and alcohol sector is its main economic activity. In this way we emphasize that the research does not present representation for the annual scale because the study occurred only for the month of July. [ABSTRACT FROM AUTHOR]

Several authors have argued that urban areas correspond to higher forms of human intervention on the earth's surface, with significant loss of environmental quality. Population growth and urbanization are the main factors that have promoted this deterioration even producing changes in the local climate. In this context, this paper aims to identify the thermo-hygrometric variations over the city of Chapecó, Santa Catarina State, Brazil. For this, it was decided to carry out a mobile transect, where a digital thermo-hygrometer was installed externally on top of the vehicle. The data collection points were defined considering the distance of 200 m, accompanied visually through the car's odometer, in a route of 14 km (South-North-East), totaling 71 measurements. The results showed, at least in principle, the establishment of a specific urban climate in the Chapecó city, whose differentiation is clearly presents from different land use and its association with the topography of the urban site. The weather systems also significantly affected the thermo-hygrometric differences along the transect. [ABSTRACT FROM AUTHOR]

Copyright of Acta Scientiarum: Technology is the property of Universidade Estadual de Maringa and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)