Measurement report: Impact of cloud processes on secondary organic aerosols at a forested mountain site in southeastern China

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Abstract 1) using aerosol mass spectrometers at a forested mountain site (1128 m a.s.l.) in southeastern China in November 2022. The average (± 1 σ) PM1 mass concentration was 4.3 ± 4.8 µ g m- 3 1 (42.9 %) and was predominantly secondary, as indicated by the high oxygen-to-carbon (O/1 concentrations observed during the daytime on cloudless days were identified to be likely to be produced from cloud evaporation. While more oxidized oxygenated OA was scavenged efficiently during cloud events, cloud evaporation was found to release a significant amount of less oxidized oxygenated OA from air masses transported from polluted regions. The distinct decrease in OA/Δ/C during the cloud evaporative period further demonstrates that OA remaining in cloud droplets is generally in a moderate oxidation state. Moreover, organic nitrates were also estimated and showed a higher contribution to the total nitrate during the cloudy period (27 %) than during the evaporative period (3 %). Overall, our results demonstrate the importance of SOA and the influences of cloud processes in regional mountain areas in southeastern China.

Location
Deutsche Nationalbibliothek Frankfurt am Main
Extent
Online-Ressource
Language
Englisch

Bibliographic citation
Measurement report: Impact of cloud processes on secondary organic aerosols at a forested mountain site in southeastern China ; volume:24 ; number:14 ; year:2024 ; pages:8473-8488 ; extent:16
Atmospheric chemistry and physics ; 24, Heft 14 (2024), 8473-8488 (gesamt 16)

Creator
Zhang, Zijun
Xu, Weiqi
Zhang, Yi
Zhou, Wei
Xu, Xiangyu
Du, Aodong
Zhang, Yinzhou
Qiao, Hongqin
Kuang, Ye
Pan, Xiaole
Wang, Zifa
Cheng, Xueling
Liu, Lanzhong
Fu, Qingyan
Worsnop, Douglas R.
Li, Jie
Sun, Yele

DOI
10.5194/acp-24-8473-2024
URN
urn:nbn:de:101:1-2408061437201.377856391339
Rights
Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
Last update
14.08.2025, 11:01 AM CEST

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Associated

  • Zhang, Zijun
  • Xu, Weiqi
  • Zhang, Yi
  • Zhou, Wei
  • Xu, Xiangyu
  • Du, Aodong
  • Zhang, Yinzhou
  • Qiao, Hongqin
  • Kuang, Ye
  • Pan, Xiaole
  • Wang, Zifa
  • Cheng, Xueling
  • Liu, Lanzhong
  • Fu, Qingyan
  • Worsnop, Douglas R.
  • Li, Jie
  • Sun, Yele

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