Avaliação da influência da poluição atmosférica no microclima urbano de Pombal – PB.

Abstract

The growth of small towns associated with the country's economic growth, the number of micro-enterprises and vehicle fleet resulting in air pollution. Thus, the objective of this study was to evaluate the influence of air pollution in urban microclimate of Pombal-PB. Three-point observations were chosen: a paved street (point 1); an area in the rural municipality (point 2) and a leafy square (point 3). To monitor the meteorological variables were used three digital and portable equipment. The collection of such data was carried out between 2013 and 2014. The meteorological variables studied were: temperature, relative humidity and wind speed. The results showed for the first period of measurement that different land uses have influence on climate parameters, with the air temperature in the urban area higher than the countryside around 1.7°C. Points 1 and 3 showed that the microclimatic differences between the wooded and unshaded streets, had influences of trees making different values between the seasons. Regarding the collection of gases that have over the allowed concentrations were found at the time that old vehicles transiting near the site. The results highlight the importance of afforestation and control of emissions, through pollution control equipment and public transport use as well as the mitigation of environmental impacts.