基于TROPOMI观测的珠三角地区对流层臭氧特征研究  

Analysis of tropospheric ozone characterization in Pearl River Delta region based on TROPOMI

作　　者：杨昆鹏 刘浩然 邢成志[3] 苏文静 洪茜茜 李启华 季祥光 刘诚 YANG Kunpeng;LIU Haoran;XING Chengzhi;SU Wenjing;HONG Qianqian;LI Qihua;JI Xiangguang;LIU Cheng(Institutes 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;Key Laboratory of Environmental Optics and Technology,Anhui Institute of Optics and Fine Mechanics,HFIPS,Chinese Academy of Sciences,Hefei 230031,China;Department of Environmental Science and Engineering,University of Science and Technology of China,Hefei 230026,China;School of Atmosphere and Remote Sensing,Wuxi University,Wuxi 214105,China;Department of Precision Machinery and Precision Instrumentation,University of Science and Technology of China,Hefei 230026,China)

机构地区：[1]安徽大学物质科学与信息技术研究院,安徽合肥230601 [2]安徽大学信息材料与智能感知安徽省实验室,安徽合肥230601 [3]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,中国科学院环境光学与技术重点实验室,安徽合肥230031 [4]中国科学技术大学环境科学与工程系,安徽合肥230026 [5]无锡学院大气与遥感学院,江苏无锡214105 [6]中国科学技术大学精密机械与精密仪器系,安徽合肥230026

出　　处：《大气与环境光学学报》2025年第1期47-59,共13页Journal of Atmospheric and Environmental Optics

基　　金：国家重点研发计划(2022YFC3700102,2020YFC1908605);中国科学院基础前沿科学研究计划(ZDBS-LY-DQC008)。

摘　　要：利用中国科学技术大学团队开发的对流层观测仪(TROPOMI)O3、NO2和HCHO产品,结合城市建成区边界数据,分析了珠三角地区2019年9月至2020年2月间臭氧及其特征前体物(NO2和HCHO)的时空分布特征、臭氧生成控制类型的季节变化和城乡差异。首先,观测结果表明在时空分布特征方面,观测期间该地区对流层NO2垂直柱浓度(VCD)受工业源排放波动影响显著,而对流层HCHOVCD的变化则呈现出明显的季节性差异,对流层O3在2019年10月和2020年2月VCD较高,分别为44.33DU和43.26DU,佛山市、广州市和东莞市臭氧污染较为严重。然后,在生成控制类型的季节变化方面,珠三角地区中心区域的臭氧生成控制类型具有明显的季节变化特征,其在秋季主要处于过渡控制区,进入冬季后转为VOCs控制区,而外围区域则主要处于NOx控制区。最后,在生成控制类型的城乡差异方面,城市区域的臭氧控制类型随时间波动明显,2019年9月68.86%的区域为NOx控制区,而12月VOCs控制区的比例达到了77.80%;乡村区域臭氧控制类型稳定,观测期间NOx控制区比例介于64.58%~98.31%之间。Using the tropospheric monitoring instrument(TROPOMI)O3,NO2 and HCHO products developed by the team of University of Science and Technology of China,combined with the urban boundary data,the spatio-temporal distribution characteristics of ozone and its characteristic precursors(NO2 and HCHO),the seasonal variation and the differences between urban and rural areas of ozone generation control types in the Pearl River Delta region,China,from Sep.2019 to Feb.2020 were studied.Firstly,the results show that in terms of spatiotemporal distribution characteristics,the VCD(Vertical column density)of tropospheric NO2 in this area was significantly affected by the fluctuation of industrial sources during the observation period,while the variation of tropospheric HCHO VCD showed obvious seasonal differences.The VCD of tropospheric O3 were relatively high in Oct.2019 and Feb.2020,with 44.33 DU and 43.26 DU,respectively,and the ozone pollution in Foshan,Guangzhou and Dongguan was relatively serious.Then,in terms of seasonal variation of O3generation control type,the ozone formation regime in the central area of the Pearl River Delta(PRD)region had obvious seasonal variation characteristics,it was mainly in the transition regime in autumn,and then turned into a VOCs-limited regime after entering the winter,while the peripheral area of PRD was mainly in the NOx-limited regime.Finally,in terms of urban-rural differences in O3generating control types,the ozone formation regime in urban areas fluctuated significantly over time.In September 2019,68.86%of the areas were NOx-limited areas,while in December,the proportion of VOCs-limited areas reached 77.80%.In comparison,the ozone formation regime in rural area was relatively stable,with the proportion of NOx-limited area ranging from 64.58%to 98.31%during the observation period.

关 键 词：臭氧污染 珠三角 对流层观测仪 臭氧生成过程 城乡差异 

分 类 号：X87[环境科学与工程—环境工程]