量子电子学报

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基于激光雷达的北京一次典型污染过程分析

柴文轩1,王帅1*,尤洋1,侯玉婧1,张天舒2,王界2,3,4   

  1. 1 中国环境监测总站,北京 100012; 2 中国科学院安徽光学精密机械研究所环境光学与技术重点实验室,安徽 合肥 230031; 3 中国科学技术大学,安徽 合肥 230026; 4 无锡中科光电技术有限公司,江苏 无锡 214135
  • 出版日期:2019-01-28 发布日期:2019-01-17
  • 通讯作者: chaiwx@cnemc.cn
  • 作者简介:柴文轩,女,河北省唐山市,硕士研究生,主要从事环境空气监测技术方面的研究。E-mail:chaiwx@cnemc.cn
  • 基金资助:
    Supported by National Key Research Program of China(国家重点研发计划, 2018YFC0213201, 2018YFC0213203)

Analysis of a typical air pollution process in Beijing based on lidar detection

CHAI Wenxuan1, WANG Shuai1*, YOU Yang1, HOU Yujing1, ZHANG Tianshu2, WANG Jie2,3,4   

  1. 1 China National Environmental Monitoring Centre, Beijing, 100012; 2 Key Laboratory of Environmental Optics and Technology, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei, Anhui 230031; 3 University of Science and Technology of China, Hefei, Anhui 230026; 4 Wuxi CAS Photonics CO., Ltd, Wuxi, Jiangsu 214135
  • Published:2019-01-28 Online:2019-01-17

摘要: 针对2018年3月9日至14日京津冀地区的一次污染过程,利用在北京及其西南传输通道(保定-石家庄-邢台-新乡)和东南输送通道(天津-沧州-德州-济宁)的地基激光雷达观测网数据和车载激光雷达走航观测数据,并结合各城市空气质量监测站点的数据、气象数据以及HYSPLIT后向轨迹结果对本次北京地区污染过程的形成进行了研究。研究结果表明,本次污染过程是一次典型的区域污染累积和传输过程,并且持续时间较长,影响范围较广。在此次污染过程中,在北京西南输送通道沿线城市存在明显的气溶胶污染气团传输特征,污染气团沿北京西南输送通道由南向北输送导致北京PM2.5浓度快速上升。基于地基激光雷达组网和车载激光雷达走航的联合观测,可有力地支撑京津冀及周边区域对大气污染物跨界传输的联防联控的研判。

关键词: 激光雷达, 激光雷达组网, 走航观测, 输送通道

Abstract: A typical air pollution process in Beijing was analyzed by ground-based lidar network, vehicle-based lidar, meteorological data, PM2.5 mass centration and backward trajectory results of Beijing and its surrounding areas, from March 9 to march 14, 2018. The result indicated obviously that the air pollution process was a typical regional pollution accumulation and transmission process, and it had a long duration and wide range of influence. During the air pollution process, there is an obvious characteristic of aerosol mass transmission along the southwest transport pathway of Beijing. The polluted air mass transported from the south to Beijing along the southwest pathway, causing the rapidly rise of PM2.5 mass concentration in Beijing. The observation based on lidar network and vehicle-based lidar, can effectively support the researches of pollutants transmission in Beijing-Tianjin-Hebei and its surrounding areas.

Key words: lidar, lidar network, mobile observation, transport pathway.