Measurement report: On the contribution of long-distance transport to the secondary aerosol formation and aging

H. Zhong; H. Zhong; R.-J. Huang; R.-J. Huang; R.-J. Huang; R.-J. Huang; C. Lin; W. Xu; J. Duan; Y. Gu; Y. Gu; W. Huang; H. Ni; C. Zhu; Y. You; Y. Wu; R. Zhang; J. Ovadnevaite; D. Ceburnis; C. D. O'Dowd

doi:10.5194/acp-22-9513-2022

Atmospheric Chemistry and Physics (Jul 2022)

Measurement report: On the contribution of long-distance transport to the secondary aerosol formation and aging

H. Zhong,
H. Zhong,
R.-J. Huang,
R.-J. Huang,
R.-J. Huang,
R.-J. Huang,
C. Lin,
W. Xu,
J. Duan,
Y. Gu,
Y. Gu,
W. Huang,
H. Ni,
C. Zhu,
Y. You,
Y. Wu,
R. Zhang,
J. Ovadnevaite,
D. Ceburnis,
C. D. O'Dowd

Affiliations

H. Zhong: State Key Laboratory of Loess and Quaternary Geology, Center for Excellence in Quaternary Science and Global Change, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China
H. Zhong: University of Chinese Academy of Sciences, Beijing 100049, China
R.-J. Huang: State Key Laboratory of Loess and Quaternary Geology, Center for Excellence in Quaternary Science and Global Change, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China
R.-J. Huang: University of Chinese Academy of Sciences, Beijing 100049, China
R.-J. Huang: Open Studio for Oceanic-Continental Climate and Environment Changes, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266061, China
R.-J. Huang: Institute of Global Environmental Change, Xi'an Jiaotong University, Xi'an 710049, China
C. Lin: State Key Laboratory of Loess and Quaternary Geology, Center for Excellence in Quaternary Science and Global Change, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China
W. Xu: State Key Laboratory of Loess and Quaternary Geology, Center for Excellence in Quaternary Science and Global Change, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China
J. Duan: State Key Laboratory of Loess and Quaternary Geology, Center for Excellence in Quaternary Science and Global Change, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China
Y. Gu: State Key Laboratory of Loess and Quaternary Geology, Center for Excellence in Quaternary Science and Global Change, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China
Y. Gu: University of Chinese Academy of Sciences, Beijing 100049, China
W. Huang: State Key Laboratory of Loess and Quaternary Geology, Center for Excellence in Quaternary Science and Global Change, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China
H. Ni: State Key Laboratory of Loess and Quaternary Geology, Center for Excellence in Quaternary Science and Global Change, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China
C. Zhu: State Key Laboratory of Loess and Quaternary Geology, Center for Excellence in Quaternary Science and Global Change, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China
Y. You: National Observation and Research Station of Coastal Ecological Environments in Macau, Macau Environmental Research Institute, Macau University of Science and Technology, Macau SAR 999078, China
Y. Wu: Key Laboratory of Middle Atmosphere and Global Environment Observation (LAGEO), Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China
R. Zhang: Key Laboratory of Middle Atmosphere and Global Environment Observation (LAGEO), Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China
J. Ovadnevaite: School of Physics and Ryan Institute's Centre for Climate & Air Pollution Studies, National University of Ireland Galway, University Road, Galway H91CF50, Ireland
D. Ceburnis: School of Physics and Ryan Institute's Centre for Climate & Air Pollution Studies, National University of Ireland Galway, University Road, Galway H91CF50, Ireland
C. D. O'Dowd: School of Physics and Ryan Institute's Centre for Climate & Air Pollution Studies, National University of Ireland Galway, University Road, Galway H91CF50, Ireland

DOI: https://doi.org/10.5194/acp-22-9513-2022
Journal volume & issue: Vol. 22
pp. 9513 – 9524

Abstract

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To investigate the physio-chemical properties of aerosol transported from major pollution regions in China, observations were conducted ∼ 200 m above the ground at the junction location of the North China Plain and Fenwei Basin, which are two regions of top priority for China's Blue Sky Campaign. We identified three pollution transport sectors including those from Beijing–Tianjin–Hebei (BTH), urban Guanzhong Basin (GZB) and northern China and one clean transport sector from the rural Guanzhong Basin region. Secondary inorganic aerosol (SIA) constituted a major fraction (39 %–46 %) in all pollution transport sectors, with a high sulfur oxidation ratio (0.44–0.58) and a high nitrogen oxidation ratio (0.24–0.29), suggesting efficient formation of secondary inorganic aerosol during regional transport. More oxidized oxygenated organic aerosol (MO-OOA) played a dominant role in the source of organic aerosol in all sectors including the clean one, accounting for 42 %–58 % of total organic aerosol. Elemental analysis (O and C) shows that aerosol particles at this receptor site were much more oxidized than in urban regions, pointing that long-range transport contributed markedly to the organic aerosol oxidation and aging. Case studies of pollution events with high sulfate, nitrate and more-oxidized oxygenated organic aerosol production rate indicate the strong formation efficiency of secondary aerosol during regional transport in the Beijing–Tianjin–Hebei transport sector.

Published in Atmospheric Chemistry and Physics

ISSN: 1680-7316 (Print); 1680-7324 (Online)
Publisher: Copernicus Publications
Country of publisher: Germany
LCC subjects: Science: Physics; Science: Chemistry
Website: http://www.atmospheric-chemistry-and-physics.net/

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