EGU23-5538
https://doi.org/10.5194/egusphere-egu23-5538
EGU General Assembly 2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

Detection of the regional concentrations of various trace gases using LP-DOAS at Hefei Xinqiao International Airport

Jun Duan1, Min Qin1, Wu Fang1, Zhitang Liao1, Huaqiao Gui1,2, Pinhua Xie1,2,3, and Wenqing Liu1,2,3
Jun Duan et al.
  • 1Key Laboratory of Environmental Optics and Technology, Anhui Institute of Optics and Fine Mechanics, HFIPS, Chinese Academy of Sciences, Hefei, China
  • 2CAS Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, China
  • 3School of Environmental Science and Optoelectronic Technology, University of Science and Technology of China, Hefei, China

Correspondence: Min Qin(mqin@aiofm.ac.cn)

Abstract: A measurement campaign using long-path differential optical absorption spectroscopy (LP-DOAS) instrument at Hefei Xinqiao International Airport to investigate the regional concentrations of various trace gases in the airport’s northern area and the variation characteristics of the gas concentrations during an aircraft’s taxiing and take-off phases. The total light path of the LP-DOAS system was about 964 meters and the time resolution of the LP-DOAS instrument was approximately 10 seconds. The measured light path of the LP-DOAS passed through an aircraft taxiway and take-off runway concurrently without affecting aircraft operations. The results of NO2 and SO2 pollution peaks were clearly visible, and their timing was well matched to the time the aircraft crossed the light path. While the aircraft take-offs increased the regional average NO2 concentrations by 10-20 ppbV and flight take-offs increased the regional average SO2 concentrations by 1-5 ppbV, the overall pollution levels in the airport area were low due to the airport's openness and rapid dispersion of pollutants, and the maximum hourly average NO2 and SO2 concentrations during the observation period were better than the Class 1 ambient air quality standards in China. Additionally, we discovered that the NO2 and SO2 emissions from the Boeing 737-800 aircraft used in this experiment were positively related to the age of the aircraft.

Acknowledgements: This work was supported by the Plan for Anhui Major Provincial Science & Technology Project (Grant No. 202203a07020003), the Anhui Provincial Key R&D Program (No.202104i07020010) and the HFIPS Director’s Fund (Grant No. YZJJQY202205).

How to cite: Duan, J., Qin, M., Fang, W., Liao, Z., Gui, H., Xie, P., and Liu, W.: Detection of the regional concentrations of various trace gases using LP-DOAS at Hefei Xinqiao International Airport, EGU General Assembly 2023, Vienna, Austria, 24–28 Apr 2023, EGU23-5538, https://doi.org/10.5194/egusphere-egu23-5538, 2023.