摘要
广州市是珠三角城市群中心城市之一,臭氧污染逐渐成为影响该地区空气质量改善的重要因素,迫切需要开展污染成因研究。本研究基于2023年6—8月广州市超光谱遥感监测站点番禺大学城站数据,对广州市夏季臭氧垂直分布特征进行分析,并解析臭氧污染潜在来源情况。结果表明:1)超光谱遥感观测数据与近地面国控站点监测数据相关性验证结果良好,超光谱遥感结果准确可靠;2)广州市夏季臭氧每日高值主要出现在下午15∶00—16∶00的边界层中层,夏季6月和7月平均值高于8月;3)广州地区臭氧浓度受外源输入影响较大。近地面臭氧主要来源于广东省东部;边界层中层臭氧主要来源于广州市偏东方向;高层臭氧主要来源于广州市东北方向,同时,广州市西南方向对臭氧输送也有所贡献。
Guangzhou,one of the central cities in the Pearl River Delta urban agglomeration,is increasingly facing ozone pollution,which has become an important factor influencing air quality improvement in the region.This highlights the urgent need for research into the sources of this pollution.This study analyzes the vertical distribution characteristics of ozone in Guangzhou during the summer months,based on data collected from the hyperspectral remote sensing monitoring station in Panyu University Town from June to August 2023,and examines the potential sources of ozone pollution.The results indicate that:1)There is a strong correlation between the hyperspectral remote sensing data and the near-surface monitoring data from national control stations,confirming the accuracy and reliability of the remote sensing results;2)The highest daily ozone levels in Guangzhou during the summer typically occur in the boundary layer at 15∶00—16∶00 pm,with average concentrations in June and July found to be higher than those in August;3)The ozone concentrations in Guangzhou are significantly influenced by external sources.Near-surface ozone primarily originates from eastern Guangdong Province,while mid-boundary layer ozone mainly comes from the eastern direction of Guangzhou.High-altitude ozone is predominantly sourced from the northeast,with additional contributions to ozone transport from the southwest.
作者
张倩华
黄坤伦
雷蕾
徐明旺
邓炳森
季祥光
魏少聪
邢成志
谈伟
刘浩然
ZHANG Qian-hua;HUANG Kun-lun;LEI Lei;XU Ming-wang;DENG Bing-sen;JI Xiang-guang;WEI Shao-cong;XING Cheng-zhi;TAN Wei;LIU Hao-ran(Guangzhou Sub-branch of Guangdong Ecological and Environmental Monitoring Center,Guangzhou 510006,China;Institute of Physical Science and Information Technology,Anhui University,Hefei 230601,China;Information Materials and Intelligent Sensing Laboratory of Anhui Province,Anhui University,Hefei 230601,China;Department of Precision Machinery and Precision Instrumentation,University of Science and Technology of China,Hefei 230026,China;Key Laboratory of Environmental Optics and Technology,Anhui Institute of Optics and Fine Mechanics,Hefei Institutes of Physical Science,Chinese Academy of Sciences,Hefei 230031,China)
出处
《环境生态学》
2024年第10期107-114,共8页
Environmental Ecology
基金
国家重点研发计划项目(2022YFC3700100、2023YFC3710500)
广东省科技计划项目(科技创新平台类)(2019B121201002)资助。
关键词
超光谱遥感
广州市
夏季
臭氧污染
后向轨迹
潜在源区
Hyperspectral remote sensing
Guangzhou
summer
ozone pollution
backward trajectory
potential source area
