Gaseous polycyclic aromatic hydrocarbons over the South China Sea : Implications for atmospheric transport under monsoon influences

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

  • Haowen Zheng
  • Mengyang Liu
  • Rainer Lohmann
  • Daning Li
  • Simon Vojta
  • And 5 others
  • Samuel Katz
  • Weimin Wang
  • Hongwei Ke
  • Chunhui Wang
  • Minggang Cai

Detail(s)

Original languageEnglish
Article number114982
Journal / PublicationMarine Pollution Bulletin
Volume191
Online published28 Apr 2023
Publication statusPublished - Jun 2023

Abstract

The seasonal monsoon variations have significant impact on the atmospheric transport of semi-volatile organic pollutants over the South China Sea (SCS). We analyzed polycyclic aromatic hydrocarbons (PAHs) over the basin and island areas (Yongxing Island and Yongshu Island) in 2017. Gaseous PAHs (0.17–1.4 ng m−3) showed spatio-temporal distinctions in their composition and sources among the basin and island areas. Mixed combustion sources of PAHs were identified over the SCS, including a petroleum source near the island areas. The transport routes of PAHs were inferred by the air mass back trajectories and potential source contribution factor analysis, identifying strong biomass burning signals from the Indochina Peninsula and other Southeast Asian countries. Emissions from approximately 90 % of the combustion sources were transported to basin areas by monsoons, whereas the island areas were dominated by local emissions. This study emphasizes the main potential terrestrial source of PAHs over the SCS under monsoon influences. © 2023 Elsevier Ltd

Research Area(s)

  • Atmospheric transport, Biomass burning, Polycyclic aromatic hydrocarbons (PAHs), Seasonal trends, Transboundary transport

Citation Format(s)

Gaseous polycyclic aromatic hydrocarbons over the South China Sea: Implications for atmospheric transport under monsoon influences. / Zheng, Haowen; Liu, Mengyang; Lohmann, Rainer et al.
In: Marine Pollution Bulletin, Vol. 191, 114982, 06.2023.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review