de Souza E Silva Regiane, da Silva Richarde Marques, de Freitas Anne Falcão, Dos Santos Joel Silva, Santos Celso Augusto Guimarães, de Lima Eduardo Rodrigues Viana
Federal University of Paraíba, Postgraduate Programme of Civil and Environmental Engineering, João Pessoa, Brazil.
Federal University of Paraíba, Department of Geosciences, João Pessoa, PB, 58051-900, Brazil.
Int J Biometeorol. 2022 Jun;66(6):1079-1093. doi: 10.1007/s00484-022-02260-y. Epub 2022 Apr 1.
Surface urban heat islands (SUHIs) are one of the most studied phenomena in urban climates because they generate problems for the well-being of the urban population. This study analyzed the thermal comfort conditions at microclimate scale and SUHI for João Pessoa city, Brazil. Micrometeorological data (temperature and air humidity data) collected at 10 stations in 2011 and 2018 were used to calculate Thom's discomfort index (TDI) for João Pessoa city. Satellite images from Landsat 5/TM for 1991, 2006, and 2010 and Landsat 8/OLI for 2018 were used for land use and land cover classification and to identify SUHI. The obtained results highlighted that the SUHI area in João Pessoa city was 26 km and that almost half of the heat island area was concentrated in the Geisel, Aeroclube, Valentina, Distrito Industrial, Cristo Redentor, and Mangabeira neighborhoods. Regarding the micrometeorological data, higher values were obtained for 2018 in the dry periods (summer) and during the day. Based on the results, a considerable increase in discomfort during the daytime was observed in urbanized areas of the city from 2010 - 2018 due to the increase in the average temperature in João Pessoa between 1991 and 2018.
地表城市热岛（SUHIs）是城市气候中研究最多的现象之一，因为它们给城市居民的福祉带来了问题。本研究分析了巴西若昂佩索阿市微气候尺度下的热舒适条件和地表城市热岛情况。利用2011年和2018年在10个站点收集的微气象数据（温度和空气湿度数据）来计算若昂佩索阿市的汤姆不适指数（TDI）。使用了1991年、2006年和2010年的Landsat 5/TM卫星图像以及2018年的Landsat 8/OLI卫星图像进行土地利用和土地覆盖分类，并识别地表城市热岛。所得结果表明，若昂佩索阿市的地表城市热岛面积为26平方公里，且几乎一半的热岛区域集中在盖泽尔、航空俱乐部、瓦伦蒂娜、工业区、基督救赎者和曼加贝拉社区。关于微气象数据，2018年在干旱期（夏季）和白天获得了更高的值。基于这些结果，由于1991年至2018年若昂佩索阿市平均气温的升高，2010年至2018年期间该市城市化地区白天的不适感显著增加。
