大气与环境光学学报 ›› 2009, Vol. 4 ›› Issue (4): 307-314.

• 环境光学 • 上一篇    下一篇

北京城区奥运期间与其他时段激光雷达观测实例分析

郝粼波 程水源 李明君 陈东升 王海燕 虞统   

  1. 1 北京工业大学环境科学与能源工程学院, 北京100124; 
    2 北京市环境监测中心, 北京 100044
  • 收稿日期:2009-06-05 修回日期:2009-06-18 出版日期:2009-07-28 发布日期:2009-07-24
  • 通讯作者: 程水源 (1958-) 男,河北邯郸人,博士生导师,研究方向为:环境规划管理;环境污染防治;环境模型与环境数值模拟;固体废物处理与资源化。 E-mail:haolinbo@emails.bjut.edu.cn
  • 作者简介:郝粼波(1984-) 男,北京人,硕士研究生,专业方向为环境规划与管理。
  • 基金资助:

    国家973(2005CB724201)和国家自然科学基金(50878006)项目的共同资助

Case Study by Lidar at Downtown of Beijing during the Olympic Games and Other Times

HAO Lin-Bei, CHENG Shui-Yuan, LI Ming-Jun, CHEN Dong-Sheng, WANG Hai-Yan, YU Tong   

  1. 1 College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China; 
    2. Beijing Environmental Monitoring Center, Beijing 100044, China
  • Received:2009-06-05 Revised:2009-06-18 Published:2009-07-28 Online:2009-07-24

摘要:

为了研究北京城区在北京奥运会期间大气边界层变化特征及大气边界层内气溶胶的消光特性,2008年8月利用MPL激光雷达对北京城区的大气边界层进行了系统观测。反演出了测站地域上空大气气溶胶的消光特性垂直分布以及大气边界层的高度。同往年北京城区的雷达监测数据进行了系统的对比,并与设在北京南郊梨花村的清洁对照点数据进行了比较。观测数据表明:北京城区奥运期间大气边界层日变化趋势明显,呈早晚低、午间高的特点。大气边界层高度相对稳定,多分布在2.0 km下,平均值为0.79 km。奥运期间气溶胶粒子浓度水平较往年有明显下降。观测点处气溶胶浓度水平每天呈周期性变化。

关键词: 激光雷达, 气溶胶, 大气边界层, 边界层高度

Abstract:

In order to study the structural feature of the ABL over downtown of Beijing and the aerosol extinction characteristics in it during the Beijing Olympic Games, ABL over Beijing was observed with a MPL lidar in August, 2008. The vertical distribution of extinction properties and the height of ABL over the observation site were inverted. The observation data was compared with the results of observations in previous years at downtown of Beijing and Beijing Lihua village which was viewed as a role of clean control site. The data indicates that the diurnal variation of ABL over Beijing during the Olympic Games is obvious, it is low in morning and evening, and high at noon time. The ABL height is relatively stable, it is always less than 2.0 km, its average height is 0.79 km. Compared with previous years, the aerosol particle concentration level at downtown of Beijing during the Olympic Games is descended apparently. The aerosol concentration at observation site changes periodically every day.

Key words: lidar, aerosol, atmosphere boundary layer, height

中图分类号: