| 北京海淀地区大气边界层的数值模拟研究 |
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| 引用本文： | 佟华,桑建国.北京海淀地区大气边界层的数值模拟研究[J].应用气象学报,2002,13(Z1):51-60. |
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| 作者姓名： | 佟华 桑建国 |
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| 作者单位： | 北京大学地球物理系,北京,100871 |
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| 基金项目： | 本文由《国家重点基础研究发展规划》项目:首都北京及周边地区大气、水、土环境污染机理与调控原理(项目编号为G1999045700)的资助. |
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| 摘 要： | 采用北京大学的三维复杂地形中尺度数值模式,利用Landsat-TM卫星影像图得到的地表状况计算陆气之间的能量平衡过程,模拟了北京海淀地区大气边界层的风、温场结构以及污染物浓度分布,进而模拟了由于汽车尾气的排放而转化成的气溶胶的浓度分布.模拟表明城郊之间存在热岛效应,边界层风场受到热岛的热力作用以及地形的动力作用影响.污染物及气溶胶浓度也存在城乡差别,最大浓度出现在城区的下风方向.
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| 关 键 词： | 城市边界层 数值模拟 海淀地区 |
| 修稿时间： | 2001年6月20日 |
NUMERICAL STUDIES OF ATMOSPHERIC BOUNDARY LAYER IN HAIDIAN DISTRICT OF BEIJING |
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| Tong Hua,Sang Jianguo.NUMERICAL STUDIES OF ATMOSPHERIC BOUNDARY LAYER IN HAIDIAN DISTRICT OF BEIJING[J].Quarterly Journal of Applied Meteorology,2002,13(Z1):51-60. |
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| Authors: | Tong Hua Sang Jianguo |
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| Abstract: | A three dimensional mesoscale numerical model combined with the energy equilibrium equation is used to simulate the wind, temperature, concentration and aerosol fields of the atmospheric boundary layer over the Haidian district of Beijing. Simulation shows that the wind field is affected by the topography and urban heat island. There exist differences between urban and suburb in the concentration fields. The largest values are located in the urban area and downwind. The verification indicates that the simulation of the urban boundary layer is satisfactory. |
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| Keywords: | Urban boundary layer Numerical simulation Haidian district |
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