Caracterização bioclimática e evolução temporal do índice de desconforto para Piracicaba - SP

Abstract

Neste trabalho alguns aspectos sobre a climatologia do município de Piracicaba, localizada no estado de SP, são analisados usando uma base de dados de 60 anos (1943 – 2002) de temperatura média diária e umidade relativa do ar, que foram medidos na periferia da área urbana. Esta base de dados climatológicos permitiu o cômputo e a análise do Índice de Desconforto, conforme a metodologia proposta por Bosen. Some climatologic aspects of Piracicaba city, located in the São Paulo state, are here analyzed. It was used a dataset of 60 years (1943 – 2002) of daily temperature and relative humidity measured on the border region of the city that separate urban and rural areas. This climatologic dataset allowed compute and analyze the Discomfort Index, according to Bosen’s methodology. Trend analysis was performed by using the sequential version of Mann-Kendall test and changing points were detected by Pettitt’s test. The analyzed dataset - considering daily average data - allowed us classifying the bioclimatic of Piracicaba as bioclimatologically comfortable. However, important temporal changes were observed. The relative air humidity has been significantly changed since the end of 60’s and apparent temperature has been significantly changed since the middle of 80’s. Consequently, the DI value has been expressively changed since early of 80’s. Key-words: bioclimatology; Discomfort Index; Piracicaba city; climate changing; temporal evolution of apparent temperature and relative humidity.