Lidar-and UAV-Based Vertical Observation of Spring Ozone and Particulate Matter in Nanjing, China

8Citations
Citations of this article
7Readers
Mendeley users who have this article in their library.

Abstract

The rapid urbanization in China is accompanied by increasingly serious air pollution. Particulate matter and ozone are the main air pollutants, and the study of their vertical distribution and correlation plays an important role in the synergistic air pollution control. In this study, we performed Lidar-and UAV-based observations in spring in Nanjing, China. The average concentrations of surface ozone and PM2.5 during the observation period are 87.78 µg m−3 and 43.48 µg m−3, respectively. Vertically, ozone reaches a maximum in the upper boundary layer, while the aerosol extinction coefficient decreases with height. Generally, ozone and aerosol are negatively correlated below 650 m. The correlation coefficient increases with altitude and reaches a maximum of 0.379 at 1875 m. Within the boundary layer, ozone and aerosols are negatively correlated on days with particulate pollution (PM2.5 > 35 µg m−3), while on clean days they are positively correlated. Above the boundary layer, the correlation coefficient is usually positive, regardless of the presence of particulate pollution. The UAV study compensates for Lidar detections below 500 m. We found that ozone concentration is higher in the upper layers than in the near-surface layers, and that ozone depletion is faster in the near-surface layers after sunset.

Author supplied keywords

Cite

CITATION STYLE

APA

Qu, Y., Zhao, M., Wang, T., Li, S., Li, M., Xie, M., & Zhuang, B. (2022). Lidar-and UAV-Based Vertical Observation of Spring Ozone and Particulate Matter in Nanjing, China. Remote Sensing, 14(13). https://doi.org/10.3390/rs14133051

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free