Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/81523
Title: Heterogeneous uptake of N2O5 in sand dust and urban aerosols observed during the dry season in Beijing
Authors: Xia, M 
Wang, W 
Wang, Z 
Gao, J
Li, H
Liang, Y 
Yu, C 
Zhang, Y
Wang, P 
Zhang, Y
Bi, F
Cheng, X
Wang, T 
Keywords: Aerosol compositions
N2O5 uptake
Particle size
Sand dust
Issue Date: 2019
Publisher: Molecular Diversity Preservation International (MDPI)
Source: Atmosphere, 2019, v. 10, no. 4, 204 How to cite?
Journal: Atmosphere 
Abstract: The uptake of dinitrogen pentoxide (N2O5) on aerosols affects the nocturnal removal of NOx and particulate nitrate formation in the atmosphere. This study investigates N2O5 uptake processes using field observations from an urban site in Beijing during April-May 2017, a period characterized by dry weather conditions. For the first time, a very large N2O5 uptake rate (k(N2O5) up to ~0.01 s-1) was observed during a sand storm event, and the uptake coefficient ( (N2O5)) was estimated to be 0.044. The γ(N2O5) in urban air masses was also determined and exhibited moderate correlation (r = 0.68) with aerosol volume to surface ratio (Va/Sa), but little relation to aerosol water, nitrate, and chloride, a finding that contrasts with previous results. Several commonly used parameterizations of γ(N2O5) underestimated the field-derived γ(N2O5). A new parameterization is suggested for dry conditions, which considers the effect of Va/Sa, temperature, and relative humidity.
URI: http://hdl.handle.net/10397/81523
ISSN: 2073-4433
DOI: 10.3390/ATMOS10040204
Rights: © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
The following publication Xia M, Wang W, Wang Z, Gao J, Li H, Liang Y, Yu C, Zhang Y, Wang P, Zhang Y, Bi F, Cheng X, Wang T. Heterogeneous Uptake of N2O5 in Sand Dust and Urban Aerosols Observed during the Dry Season in Beijing. Atmosphere. 2019; 10(4):204, is available at https://doi.org/10.3390/atmos10040204
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