夜间近地表臭氧观测

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摘要 2018年12月15~18日使用激光雷达在河北望都观测气溶胶与O₃，利用气溶胶消光系数廓线判断边界层的变化，进而研究大气边界层对于近地表层（300m）O₃浓度的影响.结果表明，边界层主要影响O₃的干沉降以及高空O₃的垂直输送，在受本地污染控制时，近地表O₃浓度受干沉降控制明显，随着边界层高度的下降而减少；西北地区气团占主导时，O₃浓度主要受水平传输以及高空垂直输送影响.

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	杨少波
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关键词 ：激光雷达, O₃, 近地面, 边界层, 干沉降

Abstract：During December 15^th~18^th, 2018, the characteristics of aerosols and ozone observed by lidar located in Wangdu, Hebei Province was analysed. The changes of the boundary layer were judged by the profile of the aerosol extinction coefficient, and then the influence of the atmospheric boundary layer on the ozone concentration in the near surface layer (300m) was studied. The results show that the boundary layer mainly affected the dry deposition of ozone and the vertical transport of high-altitude ozone. When controlled by local pollution, the near-surface ozone concentration was controlled by dry deposition, and decreased with the decrease of the height of the boundary layer. When the airflow from the northwest dominated, the ozone concentration is mainly affected by horizontal transport and high-altitude vertical transport.

Key words： lidar O₃ near-surface boundary layer dry deposition

收稿日期: 2019-04-20

PACS:

X515

基金资助:国家重点研发计划（2017YFC0209600，2018YFC0213100）；国家自然科学基金资助项目（41375044）；江苏省研究生创新项目（KYCX17_0879）

通讯作者: 曹念文,教授,nwcao@nuist.edu.cn E-mail: nwcao@nuist.edu.cn

作者简介: 杨少波(1990-),男,河南洛阳人,南京信息工程大学博士研究生,主要从事激光大气遥感探测方面研究.发表论文2篇.

引用本文:

杨少波, 曹念文, 范广强. 夜间近地表臭氧观测[J]. 中国环境科学, 2019, 39(11): 4494-4501. YANG Shao-bo, CAO Nian-wen, FAN Guang-qiang. Near-surface ozone observation at night. CHINA ENVIRONMENTAL SCIENCECE, 2019, 39(11): 4494-4501.

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http://www.zghjkx.com.cn/CN/ 或 http://www.zghjkx.com.cn/CN/Y2019/V39/I11/4494

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