中国地区城市热岛环流研究进展

Overview of Urban Breeze Circulation Studies in China

城市热岛环流是由城市热岛激发的、存在于边界层的局地环流。这一环流常影响城市区域污染物的扩散及城市降水,是城市气象学的重点研究对象。在过去30多年间,中国城市热岛环流的研究不断取得突破,研究成果丰富。为了今后更有效地开展相关研究,本文从观测分析、理论与数值模拟研究两方面,回顾并总结了我国在热岛环流研究方面取得的成果,包括热岛环流的时空特征、产生机制,以及热岛环流与其他局地环流的相互作用。此外,本文总结了热岛环流对城市及其周边地区污染物水平和垂直分布的影响。

Urban heat island circulation is a local circulation which is caused by urban heat islands in the urban boundary layer.It can affect the diffusion of pollutants in urban areas and urban precipitation,so it is the key of urban meteorology researches.In order to carry out the related researches more effectively in the future,the observation analyses and numerical simulations of urban breeze circulation in China over the past 30 years are overviewed in this paper,including the temporal and spatial characteristics,trigger mechanisms and its interaction with other local circulations.Besides,the influence of urban breeze circulation on the horizontal and vertical distribution of pollutants is summarized.