城市纹理在夜间城市热岛中的作用。
Role of City Texture in Urban Heat Islands at Nighttime.
机构信息
Concrete Sustainability Hub, Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
CNRS/MIT/AMU Joint Laboratory "MultiScale Materials Science for Energy and Environment", UMI ⟨MSE⟩2, MIT Energy Initiative, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
出版信息
Phys Rev Lett. 2018 Mar 9;120(10):108701. doi: 10.1103/PhysRevLett.120.108701.
An urban heat island (UHI) is a climate phenomenon that results in an increased air temperature in cities when compared to their rural surroundings. In this Letter, the dependence of an UHI on urban geometry is studied. Multiyear urban-rural temperature differences and building footprints data combined with a heat radiation scaling model are used to demonstrate for more than 50 cities worldwide that city texture-measured by a building distribution function and the sky view factor-explains city-to-city variations in nocturnal UHIs. Our results show a strong correlation between nocturnal UHIs and the city texture.
城市热岛（UHI）是一种气候现象，与农村环境相比，城市的空气温度会升高。在这封信件中，研究了城市热岛与城市几何形状的关系。多年的城乡温差和建筑足迹数据，结合热辐射缩放模型，证明了全球 50 多个城市的城市纹理（由建筑分布函数和天空视角系数衡量）解释了夜间城市热岛的城市间差异。我们的结果表明，夜间城市热岛与城市纹理之间存在很强的相关性。
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