利用激光雷达探测潍坊市夏季臭氧分布特征  

Detection of ozone distribution characteristics in Weifang during summer using lidar

作　　者：涂爱琴 王珍珠[1,2] 李恒昶 施奇兵 张海 刘东 翁宁泉 Tu Aiqin;Wang Zhenzhu;Li Hengchang;Shi Qibing;Zhang Hai;Liu Dong;Weng Ningquan(Key Laboratory of Atmospheric Optics,Anhui Institute of Optics and Fine Mechanics,Hefei Institutes of Physical Science,Chinese Academy of Sciences,Hefei 230031,China;Science Island Branch of Graduate School,University of Science and Technology of China,Hefei 230026,China;Atmospheric Sounding Technology Support Center of Shandong Meteorological Bureau,Jinan 250031,China;Key Laboratory for Meteorological Disaster Prevention and Reduction of Shandong Province,Jinan 250031,China;Hefei Zhongke Guangbo Quantum Technology Co.,Ltd,Hefei 230011,China;School of Environmental Science and Optoelectronic Technology,University of Science and Technology of China,Hefei 230026,China)

机构地区：[1]中国科学院合肥物质科学研究院安徽光学精密机械研究所、中国科学院大气光学重点实验室,安徽合肥230031 [2]中国科学技术大学研究生院科学岛分院,安徽合肥230026 [3]山东省气象局大气探测技术保障中心,山东济南250031 [4]山东省气象防灾减灾重点实验室,山东济南250031 [5]合肥中科光博量子科技有限公司,安徽合肥230011 [6]中国科学技术大学环境科学与光电技术学院,安徽合肥230026

出　　处：《红外与激光工程》2023年第5期189-196,共8页Infrared and Laser Engineering

基　　金：国家自然科学基金(41975038,42111530028);安徽省自然科学基金(2008085J33);安徽省重点研发计划项目(2022h11020008);中国科学院青年创新促进会项目(Y2021113)。

摘　　要：为了研究潍坊市夏季臭氧的分布特征,使用差分吸收激光雷达在潍坊市进行观测,分析了晴天和雨天臭氧分布的差别,并统计了无降水日臭氧的垂直分布和日变化特征。结果表明:降水发生前强烈的对流运动和大风会使对流臭氧层变厚,臭氧浓度变低;降水发生在一天中的不同时段,对臭氧污染的影响差异很大;无降水日对流臭氧层主要分布在1500 m以下,呈现白天高、夜晚低的日变化特征,高浓度值常出现在12~18时;在垂直结构上呈现分层的特征,其中,300~500 m高度的臭氧浓度随着高度的增加而增大,且在500 m附近达到极大值,该高度和米散射激光雷达探测的边界层高度基本一致;1500 m高度各个时段的臭氧浓度趋于一致,且自该高度往上臭氧无明显日变化特征,可将该层臭氧浓度作为臭氧预报的大气背景值。Objective Tropospheric ozone is an important greenhouse gas and a pollutant harmful to organisms.It not only affects the radiation balance of the ground-atmosphere system,but also seriously endangers the ecological environment.When the near-ground ozone concentration exceeds a certain threshold,it will cause a series of adverse effects on human health and the growth of animals and plants.Since the near-ground ozone concentration depends largely on the physical conditions of the upper layer atmosphere,it is of great significance to carry out vertical ozone detection and study the ozone distribution characteristics for the source analysis and pollution prevention of ozone.In recent years,the near-ground ozone concentration in Weifang has been increasing,especially in summer,which has replaced fine particles as the main pollutant.Therefore,the temporal and spatial distribution characteristics of ozone in Weifang during summer are analyzed in this paper.Methods The differences of ozone distribution under two different weather conditions of fine day and rainy day are studied through analyzing typical cases in this paper.In addition,in order to study the differences in ozone distribution at different times of the day,the time of a day was divided into four periods,namely morning transition,daytime,evening transition and nighttime,and the vertical distribution characteristics of ozone at each period were statistically analyzed.The low-altitude ozone concentration data used for the analysis was detected by the GBQ L-04 ozone lidar(Fig.1)produced by Hefei Zhongke Guangbo Quantum Technology limited company.The monitoring period is from June 1,2020 to August 31,2020.The monitoring location is located in Weifang Environmental Monitoring Center Station(119.15°E,36.70°N).Results and Discussions The daily variation of low-altitude ozone concentration on sunny days is distinct,while on rainy days it varies with the time of the day when precipitation occurs.Ozone pollution will not be too strong when precipitation occurs in the

关 键 词：差分吸收激光雷达 臭氧 垂直分布 日变化 浓度廓线 

分 类 号：TN958.98[电子电信—信号与信息处理]