Articles | Volume 21, issue 13
Atmos. Chem. Phys., 21, 9977–9994, 2021
https://doi.org/10.5194/acp-21-9977-2021
Atmos. Chem. Phys., 21, 9977–9994, 2021
https://doi.org/10.5194/acp-21-9977-2021
Measurement report
02 Jul 2021
Measurement report | 02 Jul 2021

Measurement report: The effect of aerosol chemical composition on light scattering due to the hygroscopic swelling effect

Rongmin Ren et al.

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Short summary
We analyzed the effect of the proportion of components making up the chemical composition of aerosols on f(RH) in southern Beijing in 2019. Nitrate played a more significant role in affecting f(RH) than sulfate. The ratio of the sulfate mass fraction to the nitrate mass fraction (mostly higher than ~ 4) was a sign of the deliquescence of aerosol. A piecewise parameterized scheme was proposed, which could better describe deliquescence and reduce uncertainties in simulating aerosol hygroscopicity.
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