建筑群对城市冠层动力、热力效应的数值试验研究  

SIMULATION ON THE DYNAMICAL AND THERMAL INFLUENCE OF BUILDING CLUSTER ON URBAN CANOPY

作　　者：宋金暖[1] 王振会[1] 何金海[2] 许建明[1] 

机构地区：[1]南京信息工程大学电子工程系,江苏南京210044 [2]南京信息工程大学大气科学系,江苏南京210044

出　　处：《气象与减灾研究》2006年第3期5-11,共7页Meteorology and Disaster Reduction Research

基　　金：国家自然科学基金资助项目(90211011)

摘　　要：利用中尺度模式MM5,分别耦合传统的边界层参数化方案和城市冠层参数化方案,模拟了2001年冬季北京冠层大气的动力、热力特征,并和观测资料进行了对比分析。分析结果表明,城市冠层参数化方案更能细致描述建筑群对城市冠层大气的动力、热力作用。由于建筑群的动力、热力作用,使北京城区的温度升高,风速减小,湍流动能增强,形成了明显的增温区、阻风区和湍能增强区,中心均位于城区高大建筑群附近,并向郊区递减。This article couples MM5 with traditional PBL parameterization and urban canopy parameterization to simulate dynamic and thermal characteristics of urban canopy of Beijing in winter of 2001.Model results have been compared with observation data of BECAPEX(Beijing City Air Pollution Observation Field Experiment),which proved that urban canopy parameterization simulated dynamic and thermal effects of building cluster on urban canopy more efficiently than traditional PBL parameterization.Results also showed that building cluster of urban canopy increased temperature and eddy energy and decreased horizontal velocity in the city zone,resulting in the formation of temperature-increased,velocity-decreased and eddy-enhanced area with the high value located at city center and decreased from urban to suburb.

关 键 词：城市冠层 动力效应 热力效应 建筑群 

分 类 号：P435[天文地球—大气科学及气象学] P456.7