Articles | Volume 20, issue 24
Atmos. Chem. Phys., 20, 16041–16053, 2020
https://doi.org/10.5194/acp-20-16041-2020
Atmos. Chem. Phys., 20, 16041–16053, 2020
https://doi.org/10.5194/acp-20-16041-2020

Measurement report 22 Dec 2020

Measurement report | 22 Dec 2020

Measurement report: dual-carbon isotopic characterization of carbonaceous aerosol reveals different primary and secondary sources in Beijing and Xi'an during severe haze events

Haiyan Ni et al.

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Latest update: 21 Oct 2021
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Short summary
We investigated sources of carbonaceous aerosols in Beijing and Xi'an during severe winter haze. Elemental carbon (EC) was dominated by vehicle emissions in Xi’an and coal burning in Beijing. Organic carbon (OC) increment during haze days was driven by the increase in primary and secondary OC (SOC). SOC was more from fossil sources in Beijing than Xi’an, especially during haze days. In Xi’an, no strong day–night differences in EC or OC sources suggest a large accumulation of particles.
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