Urban areas cause several transformations in the landscape through the replacement of vegetation and permeable soils for buildings and waterproofing of surfaces. Such changes result in a different energy balance according to land use and occupation characteristics, contributing to the generation of heat islands. This research aims to compare and analyze the intensities of day and night atmospheric and surface urban heat islands in Presidente Prudente, Brazil, and in Rennes, France. These are medium-sized cities located in continental tropical and temperate climates, respectively. Air temperatures were recorded in urban built areas and in other representative areas of rural environments in both cities. Surface temperature maps were plotted using images from the Landsat 8 satellite, band 10, thermal infrared channel/TIRS 1, taken during the night and the day. The results show that atmospheric (UHI) and surface (SUHI) heat islands do not present the same characteristics and that the dynamics of each heat island varies not only throughout the day, but also depending on the region's climate, meteorological condition, location, and types of land use. The details of surface temperatures and air temperatures during the satellite passage time (day and night) through points with typical characteristics of each city show the effects of vegetation and less built-up areas on reducing the differences between air and surface temperatures, evidencing the effects of buildings on increasing air temperatures, especially at night, when atmospheric heat islands are more intense.

This research is original because relations between air and surface temperatures during the day and night were not previously studied in these cities. Thus, the results of this study may contribute to improving knowledge on urban climate and surface and atmospheric heat islands aiming to provide information for the management and planning of cities with different climate and historical backgrounds.

城市地区通过替换植被和建筑物的渗透性土壤以及表面防水，导致景观发生若干变化。根据土地利用和职业特征，这种变化会导致不同的能量平衡，从而导致热岛的产生。本研究旨在比较和分析巴西普鲁登特总统和法国雷恩的昼夜大气和地表城市热岛的强度。这些是分别位于大陆性热带和温带气候的中等城市。两个城市的城市建成区和农村环境的其他代表性区域都记录了气温。使用来自 Landsat 8 卫星、波段 10、热红外通道/TIRS 1、在夜间和白天拍摄。结果表明，大气（UHI）和地表（SUHI）热岛的特征并不相同，每个热岛的动态不仅全天变化，而且还取决于该地区的气候、气象条件、位置和土地利用类型。卫星通过时间（白天和黑夜）通过每个城市典型特征点的地表温度和气温的详细信息显示了植被和较少建成区对减少气温和地表温度差异的影响，证明了影响气温升高的建筑物，尤其是在夜间，当大气热岛更加强烈时。结果表明，大气（UHI）和地表（SUHI）热岛的特征并不相同，每个热岛的动态不仅全天变化，而且还取决于该地区的气候、气象条件、位置和土地利用类型。卫星通过时间（白天和黑夜）通过每个城市典型特征点的地表温度和气温的详细信息显示了植被和较少建成区对减少气温和地表温度差异的影响，证明了影响气温升高的建筑物，尤其是在夜间，当大气热岛更加强烈时。结果表明，大气（UHI）和地表（SUHI）热岛的特征并不相同，每个热岛的动态不仅全天变化，而且还取决于该地区的气候、气象条件、位置和土地利用类型。卫星通过时间（白天和黑夜）通过每个城市典型特征点的地表温度和气温的详细信息显示了植被和较少建成区对减少气温和地表温度差异的影响，证明了影响气温升高的建筑物，尤其是在夜间，当大气热岛更加强烈时。的气候、气象条件、位置和土地利用类型。卫星通过时间（白天和黑夜）通过每个城市典型特征点的地表温度和气温的详细信息显示了植被和较少建成区对减少气温和地表温度差异的影响，证明了影响气温升高的建筑物，尤其是在夜间，当大气热岛更加强烈时。的气候、气象条件、位置和土地利用类型。卫星通过时间（白天和黑夜）通过每个城市典型特征点的地表温度和气温的详细信息显示了植被和较少建成区对减少气温和地表温度差异的影响，证明了影响气温升高的建筑物，尤其是在夜间，当大气热岛更加强烈时。

这项研究是原创的，因为以前没有在这些城市研究过白天和黑夜的空气和地表温度之间的关系。因此，本研究的结果可能有助于提高对城市气候以及地表和大气热岛的认识，旨在为具有不同气候和历史背景的城市的管理和规划提供信息。