Estudo do clima urbano da cidade de Campina Grande-PB.

Abstract

Meteorological conditions of several locations of Campina Grande-PB city were evaluated with the objective of analyzing the establishment of thermal discomfort of some environments of the city. So that relative humidity and air temperature data were collected at nine locations of the city including urban and suburban areas on a basis of eight collecting campaigns of 24 hours periods in the dry and rainy seasons. The data were collected by a 23X datalogger (Campbel Scientific, Inc.) programmed for collecting data at each second and storage the average of each ten seconds. Also, meteorological informations of the last 41 years at Campina Grande were used to verify time tendencies. For evaluating the thermal comfort it was applied the Thom discomfort index (TDI). The Mann-Kendall statistical test was used for identifying possible significant tendency at the time series of air temperature and relative humidity. Also, it was evaluated the statistical analysis of the differences between the averages of the TDI for each location observed by using the analysis of variance – ANOVA. The results showed increasing and decreasing tendencies of the air temperature and relative humidity, respectively with an increases of 1.5 ºC and a reduction of 7.2%, respectively in the last 41 years in the city. The TDI aoso showed an increasing tendency with an overall increase of 0.83 ºC in the period. No thermal discomfort was observed in the time periods and locations studied except for the Praça da Bandeira at days of the dry season with the observation of urban heat island. Also, it was observed that before 9:00 and after 16:00 the thermal sensation is similar for all locations studied. Also, it was observed that between 9:00 and 16:00 hours the thermal sensation changes with the hour of the day and, in the first hours in the morning the thermal comfort changes with the time of the day for all locations studied.