海陆风对秦皇岛空气质量和颗粒物组分的影响  

Impact of Sea-land Breeze on Air Quality and Compositions of Particulate Matters in Qinhuangdao

作　　者：侯冬利 张翔 刘亚非 刘新罡[2] 赵江伟 王建国 HOU Dong-li;ZHANG Xiang;LIU Ya-fei;LIU Xin-gang;ZHAO Jiang-wei;WANG Jian-guo(Ecological Environment Monitoring Center of Hebei Province,Shijiazhuang 050001,China;School of Environment,Beijing Normal University,Beijing 100089,China)

机构地区：[1]河北省生态环境监测中心,石家庄050001 [2]北京师范大学环境学院,北京100089

出　　处：《四川环境》2024年第2期14-22,共9页Sichuan Environment

基　　金：国家重点研发计划项目(2019YFC0214200);科技部资助项目(DQGG202110);LAPC国家重点实验室开放课题(LAPC-KF-2023-06)。

摘　　要：为研究海陆风对秦皇岛市大气污染影响,基于气象和大气污染物观测数据,利用后向轨迹和气溶胶激光雷达研究了海陆风和非海陆风天气条件下颗粒物在水平传输和垂直输送方面的差异。研究结果发现,高浓度的PM_(2.5)和O_(3)主要对应西南风向。海陆风天气条件下,PM_(2.5)浓度高于非海陆风天,各组分的浓度明显升高,秋季海陆风日O_(3)浓度明显高于非海陆风日。秦皇岛市海陆风是否能够清除污染物取决于气团的路径。气团若经过秦皇岛以南污染排放区域,能够传输污染物,二次转化生成增强,导致颗粒物浓度升高。为应对秦皇岛市大气污染问题,需要加强对来自南部方向污染传输的预报和预警工作。To study the impact of sea-land breeze on atmospheric pollution in Qinhuangdao,a research was conducted based on meteorological and atmospheric pollution observations.Backward trajectories and aerosol lidar were used to investigate the differences in horizontal transport and vertical conveying of particulate matters under sea-land breeze and non-sea-land breeze conditions.The findings revealed that high PM_(2.5) and O_(3) concentrations were present in the southwest wind direction.On days with sea-land breeze,the PM_(2.5) concentration was higher than that on days without sea-land breeze.Furthermore,the concentration of PM_(2.5) components significantly increased on days with sea-land breeze.In autumn,the O_(3) concentration on days with sea-land breeze was notably higher than that on days without sea-land breeze.The removal of air pollutants by sea-land breeze in Qinhuangdao depended on the paths of air masses.On days with sea-land breeze,if the air masses passed through the polluted region south of Qinhuangdao,they could transport air pollutants,leading to enhanced secondary transformation and an increase in particulate matter concentrations.To tackle atmospheric pollution in Qinhuangdao,it is crucial to strengthen forecast and early warning of pollution transmission in the southern region.

关 键 词：海陆风 空气质量 后向轨迹 激光雷达 秦皇岛 

分 类 号：X16[环境科学与工程—环境科学]