Monitoring an air pollution episode in Shenzhen by combining MODIS satellite images and the HYSPLIT model

3rd International Symposium on Earth Observation for Arid and Semi-Arid Environments

Li, Lili^1 ; Liu, Yihong^2 ; Wang, Yunpeng^1

Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou

510640, China^1

School of Geographic and Oceanographic Sciences, Nanjing University, Xianlin Road No.163, Qixia District, Nanjing

210046, China^2

关键词: Air pollution episodes;    Atmospheric pollutants;    Back trajectory analysis;    MODIS satellite images;    Pearl River delta;    Pollution episodes;    Transport pathways;    Urban air pollution;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/74/1/012010/pdf
DOI  :  10.1088/1755-1315/74/1/012010

来源: IOP

【 摘 要 】

Urban air pollution is influenced not only by local emission sources including industry and vehicles, but also greatly by regional atmospheric pollutant transportation from the surrounding areas, especially in developed city clusters, like the Pearl River Delta (PRD). Taking an air pollution episode in Shenzhen as an example, this paper investigates the occurrence and evolution of the pollution episode and identifies the transport pathways of air pollutants in Shenzhen by combining MODIS satellite images and HYSPLIT back trajectory analysis. Results show that this pollution episode is mainly caused by the local emission of pollutants in PRD and oceanic air masses under specific weather conditions.