Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/23217
PIRA download icon_1.1View/Download Full Text
Title: Ground-level ozone in four Chinese cities : precursors, regional transport and heterogeneous processes
Authors: Xue, LK 
Wang, T 
Gao, J
Ding, AJ
Zhou, XH
Blake, DR
Wang, XF
Saunders, SM
Fan, SJ
Zuo, HC
Zhang, QZ
Wang, WX
Issue Date: 2014
Source: Atmospheric chemistry and physics, 2014, v. 14, no. 23, p. 13175-13188
Abstract: We analyzed the measurements of ozone (O3) and its precursors made at rural/suburban sites downwind of four large Chinese cities - Beijing, Shanghai, Guangzhou and Lanzhou, to elucidate their pollution characteristics, regional transport, in situ production, and impacts of heterogeneous processes. The same measurement techniques and observation-based model were used to minimize uncertainties in comparison of the results due to difference in methodologies. All four cities suffered from serious O3 pollution but showed different precursor distributions. The model-calculated in situ O3 production rates were compared with the observed change rates to infer the relative contributions of on-site photochemistry and transport. At the rural site downwind of Beijing, export of the well-processed urban plumes contributed to the extremely high O3 levels (up to an hourly value of 286 ppbv), while the O3 pollution observed at suburban sites of Shanghai, Guangzhou and Lanzhou was dominated by intense in situ production. The O3 production was in a volatile organic compound (VOC)-limited regime in both Shanghai and Guangzhou, and a NOx-limited regime in Lanzhou. The key VOC precursors are aromatics and alkenes in Shanghai, and aromatics in Guangzhou. The potential impacts on O3 production of several heterogeneous processes, namely, hydrolysis of dinitrogen pentoxide (N2O5), uptake of hydro peroxy radical (HO2) on particles and surface reactions of NO2 forming nitrous acid (HONO), were assessed. The analyses indicate the varying and considerable impacts of these processes in different areas of China depending on the atmospheric abundances of aerosol and NOx, and suggest the urgent need to better understand these processes and represent them in photochemical models.
Publisher: Copernicus GmbH
Journal: Atmospheric chemistry and physics 
ISSN: 1680-7316
EISSN: 1680-7324
DOI: 10.5194/acp-14-13175-2014
Rights: © Author(s) 2014. This is an open access article distributed under the Creative Commons Attribution 3.0 License (https://creativecommons.org/licenses/by/3.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
The following publication: Xue, L. K., Wang, T., Gao, J., Ding, A. J., Zhou, X. H., Blake, D. R., Wang, X. F., Saunders, S. M., Fan, S. J., Zuo, H. C., Zhang, Q. Z., and Wang, W. X.: Ground-level ozone in four Chinese cities: precursors, regional transport and heterogeneous processes, Atmos. Chem. Phys., 14, 13175-13188 is available at https://doi.org/10.5194/acp-14-13175-2014, 2014.
Appears in Collections:Journal/Magazine Article

Files in This Item:
File Description SizeFormat 
Xue_Ground-level_ozone_four.pdf2.73 MBAdobe PDFView/Open
Open Access Information
Status open access
File Version Version of Record
Access
View full-text via PolyU eLinks SFX Query
Show full item record

Page views

456
Last Week
4
Last month
Citations as of Mar 24, 2024

Downloads

169
Citations as of Mar 24, 2024

SCOPUSTM   
Citations

344
Last Week
2
Last month
0
Citations as of Mar 28, 2024

WEB OF SCIENCETM
Citations

280
Last Week
0
Last month
2
Citations as of Mar 28, 2024

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.