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激光雷达探测北京城区夏季大气边界层
引用本文:王珍珠,李炬,钟志庆,刘东,周军.激光雷达探测北京城区夏季大气边界层[J].应用光学,2008,29(1):96-100.
作者姓名:王珍珠  李炬  钟志庆  刘东  周军
作者单位:1. 中国科学院安徽光学精密机械研究所,大气光学中心,安徽,合肥,230031
2. 中国气象局,北京城市气象研究所,北京,100089
基金项目:北京市科技攻关项目 , 国家重点基础研究发展计划(973计划) , 国家自然科学基金
摘    要:为了研究北京城区夏季大气边界层结构变化特征及大气边界层内气溶胶消光特性,2004年8月利用便携式米散射激光雷达对北京城区夏季大气边界层进行了系统观测。反演了观测站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。分析了气象条件和人类活动对大气边界层结构的影响。观测数据表明: 北京城区夏季大气边界层有明显的日变化特征,早晚比较低,日间有一个从低变高再变低的过程,中午前后达到最高。结合气象参数对测量数据进行的统计分析表明:北京城区夏季大气边界层高度相对稳定,多分布在1.8km以下,平均值为0.68km;大气边界层内存在浓度较高的气溶胶粒子,平均光学厚度(3km以内)在0.30左右。

关 键 词:激光雷达  大气边界层  气溶胶光学厚度
文章编号:1002-2082(2008)01-0096-05
收稿时间:2007-08-28
修稿时间:2007-10-15

LIDAR exploration of atmospheric boundary layer over downtown of Beijing in summer
WANG Zhen-zhu,LI Ju,ZHONG Zhi-qing,LIU Dong,ZHOU Jun.LIDAR exploration of atmospheric boundary layer over downtown of Beijing in summer[J].Journal of Applied Optics,2008,29(1):96-100.
Authors:WANG Zhen-zhu  LI Ju  ZHONG Zhi-qing  LIU Dong  ZHOU Jun
Institution:1. Center of Atmospheric Optics, Anhui Institute of Optics and Fine Mechanics, CAS, Hefei 230031, China; 2. Institute of Urban Meteorology, China Meteorological Administration, Beijing 100089, China
Abstract:In order to study the structural feature of the atmospheric boundary layer (ABL) over Beijing and the aerosol extinction characteristic in it, ABL over Beijing was observed with a potable Mie LIDAR in the summer of 2004. The vertical distribution of extinction properties and the height of ABL over the observation site were inverted. And the influences induced by meteorological conditions and human activities on the ABL structure were analyzed. The data indicates that the variation of ABL over Beijing in the daytime in summer is obvious. With meteorological parameters, the detected data of ABL heights and aerosol optical depth are presented and discussed. The research result shows that the ABL height is always less than 1.8km, its average height is 0.68km and the aerosol optical depths within 3km are about 0.3.
Keywords:LIDAR  atmospheric boundary layer  aerosol optical thickness
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