Land surface temperature and urban heat island estimates for Australian capital cities, summer 2018-19

Land surface temperature (LST) maps, and urban heat island (UHI) maps, for Australian capital cities, calculated over summer 2018-19.\nLineage: Land surface temperatures were calculated using data from the Landsat 8 thermal infrared sensor (TIRS) band 10. Each image was processed using the generalised single channel method of Jiménez-Muñoz et al. (2003, 2009). The required atmospheric parameters were obtained from publicly available observations by the Australian Government Bureau of Meteorology (BOM). The required land surface emissivity (LSE) values were estimated using the NDVI approach (Sobrino & Raissouni 2000). Urban Heat Island (UHI) was estimated by subtracting from the LST images an estimate of non-urban baseline temperature. This baseline was estimated by a first-order fit to the temperature of native vegetation within and around each urban centre.

澳大利亚首府城市2018-19年夏季的地表温度（Land surface temperature, LST）图与城市热岛（Urban Heat Island, UHI）图。
谱系：地表温度利用Landsat 8热红外传感器（Thermal Infrared Sensor, TIRS）第10波段的数据计算得出。每张图像均采用Jiménez-Muñoz等人（2003, 2009）提出的广义单通道法处理。所需大气参数来源于澳大利亚政府气象局（Australian Government Bureau of Meteorology, BOM）公开的观测数据。所需地表发射率（Land Surface Emissivity, LSE）值通过归一化植被指数（Normalized Difference Vegetation Index, NDVI）方法（Sobrino & Raissouni 2000）估算。城市热岛通过从LST图像中减去非城市基准温度的估算值得到，该基准温度通过对各城市中心内部及周边原生植被温度进行一阶拟合估算得出。