气象学报（英文版）2022，Vol.36Issue(6)：1-43,43.
北京城市空间结构对陆表热岛和冠层热岛影响对比研究
Impacts of the Urban Spatial Landscape in Beijing on Surface and Canopy Urban Heat Islands
摘要
Abstract
How does the urban spatial landscape (USL) pattern affect the land surface urban heat islands (SUHIs) and canopy urban heat islands (CUHIs)? Based on satellite and meteorological observations, this case study compares the im-pacts of the USL pattern on SUHI and CUHI in the central urban area (CUA) of Beijing using the satellite land-sur-face-temperature product and hourly temperature data from automatic meteorological stations from 2009 to 2018. El-even USL metrics—building height (BH), building density (BD), standard deviation of building height (BSD), floor area ratio (FAR), frontal area index (FAI), roughness length (RL), sky view factor (SVF), urban fractal dimension (FD), vegetation coverage (VC), impervious coverage (IC), and albedo (AB)—with a 500-m spatial resolution in the CUA are extracted for comparative analysis. The results show that SUHI is higher than CUHI at night, and SUHI is only consistent with CUHI at spatial–temporal scales at night, particularly in winter. Spatially, all 11 metrics are strongly correlated with both the SUHI and CUHI at night, with stronger correlation between most metrics and SUHI. VC, AB, and SVF have the greatest impact on both the SUHI and CUHI. High SUHI and CUHI values tend to ap-pear in areas with BD ≥ 0.26, VC ≤ 0.09, AB ≤ 0.09, and SVF ≤ 0.67. In summer, most metrics have a greater im-pact on the SUHI than CUHI; the opposite is observed in winter. SUHI variation is affected primarily by VC in sum-mer and by VC and AB in winter, which is different for the CUHI variation. The collective contribution of all 11 metrics to SUHI spatial variation in summer (61.8％) is higher than that to CUHI; however, the opposite holds in winter and for the entire year, where the cumulative contribution of the factors accounts for 66.6％ and 49.6％, re-spectively, of the SUHI variation.关键词
SUHI/CUHI/植被覆盖度/反照率/天空开阔度/建筑密度/北京Key words
surface urban heat island/canopy urban heat island/vegetation coverage/albedo/sky view factor/building density/Beijing引用本文复制引用
刘勇洪,徐永明,张晔萍,韩秀珍,翁富忠,轩春怡,舒文军..北京城市空间结构对陆表热岛和冠层热岛影响对比研究[J].气象学报（英文版）,2022,36(6):1-43,43.基金项目
Supported by the National Natural Science Foundation of China(41871028),Opening Fund of National Data Center for EarthObservation Science(NODAOP2021004),and Beijing Natural Science Fund(8192020).国家自然科学基金面上项目(41871028) （41871028）
北京市自然基金项目(8192020) （8192020）
