Articles | Volume 26, issue 18
https://doi.org/10.5194/acp-26-13213-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-26-13213-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Urban surface-atmosphere fluxes of selected pptv-level oxygenated organic molecules (OOMs) from eddy covariance observations
Jieya Sun
Department of Atmospheric Science, School of Environmental Studies, China University of Geosciences, Wuhan 430074, China
Xinyu Wang
Department of Atmospheric Science, School of Environmental Studies, China University of Geosciences, Wuhan 430074, China
Jingya Hua
Department of Atmospheric Science, School of Environmental Studies, China University of Geosciences, Wuhan 430074, China
Bo Zhu
Hubei Ecological Environment Monitoring Center Station, Wuhan 430070, China
Nan Chen
Hubei Ecological Environment Monitoring Center Station, Wuhan 430070, China
Department of Atmospheric Science, School of Environmental Studies, China University of Geosciences, Wuhan 430074, China
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We described the design and deployment of a flux measurement system to track acidic species at a vegetable farm in China's industrial-agricultural mixed zones. Bidirectional fluxes indicate the farmland was both sink and source. Nitrous acid and nitrate exchange was 10–100 times higher than those reported in the literature. Nitric acid emissions rose with wind speed, while nitrous acid increased at lower temperatures. The results help air pollution controls and protect farm ecosystems.
Xinyu Wang, Nan Chen, Bo Zhu, and Huan Yu
Atmos. Chem. Phys., 25, 9601–9615, https://doi.org/10.5194/acp-25-9601-2025, https://doi.org/10.5194/acp-25-9601-2025, 2025
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Gas–particle partitioning governs the fate of organic molecules and the formation of organic aerosols in the atmosphere. Based on field measurement data, we built machine learning models to predict gas–particle partitioning. We also unveiled previously unrecognized interactions that led to the deviations of partitioning from the equilibrium state under real atmospheric conditions. Our study provided valuable insights for future research in atmospheric chemistry.
Yibei Wan, Xiangpeng Huang, Chong Xing, Qiongqiong Wang, Xinlei Ge, and Huan Yu
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The organic compounds involved in continental new particle formation have been investigated in depth in the last 2 decades. In contrast, no prior work has studied the exact chemical composition of organic compounds and their role in coastal new particle formation. We present a complementary study to the ongoing laboratory and field research on iodine nucleation in the coastal atmosphere. This study provided a more complete story of coastal I-NPF from low-tide macroalgal emission.
Haoran Zhang, Nan Li, Keqin Tang, Hong Liao, Chong Shi, Cheng Huang, Hongli Wang, Song Guo, Min Hu, Xinlei Ge, Mindong Chen, Zhenxin Liu, Huan Yu, and Jianlin Hu
Atmos. Chem. Phys., 22, 5495–5514, https://doi.org/10.5194/acp-22-5495-2022, https://doi.org/10.5194/acp-22-5495-2022, 2022
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We developed a new algorithm with low economic/technique costs to identify primary and secondary components of PM2.5. Our model was shown to be reliable by comparison with different observation datasets. We systematically explored the patterns and changes in the secondary PM2.5 pollution in China at large spatial and time scales. We believe that this method is a promising tool for efficiently estimating primary and secondary PM2.5, and has huge potential for future PM mitigation.
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Short summary
Oxygenated organic molecules affect air quality and form fine particles, but their exchange between urban surfaces and air had never been measured. We made the first such measurements in a Chinese city in summer, using sensitive tools at a suburban campus. We refined methods for reliable data on these low-concentration molecules and reveals complex bidirectional exchange behaviors. This work fills a key gap and aids future air pollution studies.
Oxygenated organic molecules affect air quality and form fine particles, but their exchange...
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