Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/79933
PIRA download icon_1.1View/Download Full Text
Title: Ozone pollution around a coastal region of south China sea : interaction between marine and continental air
Authors: Wang, H 
Lyu, XP 
Guo, H 
Wang, Y 
Zou, SC
Ling, ZH
Wang, XM
Jiang, F
Zeren, YZ 
Pan, WZ 
Huang, XB
Shen, J
Issue Date: 2018
Source: Atmospheric chemistry and physics, 2018, v. 18, no. 6, p. 4277-4295
Abstract: Marine atmosphere is usually considered to be a clean environment, but this study indicates that the near-coast waters of the South China Sea (SCS) suffer from even worse air quality than coastal cities. The analyses were based on concurrent field measurements of target air pollutants and meteorological parameters conducted at a suburban site (Tung Chung, TC) and a nearby marine site (Wan Shan, WS) from August to November 2013. The observations showed that the levels of primary air pollutants were significantly lower at WS than those at TC, while the ozone (O-3) value was greater at WS. Higher O-3 levels at WS were attributed to the weaker NO titration and higher O-3 production rate because of stronger oxidative capacity of the atmosphere. However, O-3 episodes were concurrently observed at both sites under certain meteorological conditions, such as tropical cyclones, continental anticyclones and sea-land breezes (SLBs). Driven by these synoptic systems and mesoscale recirculations, the interaction between continental and marine air masses profoundly changed the atmospheric composition and subsequently influenced the formation and redistribution of O-3 in the coastal areas. When continental air intruded into marine atmosphere, the O-3 pollution was magnified over the SCS, and the elevated O-3 (> 100 ppbv) could overspread thesea boundary layer similar to 8 times the area of Hong Kong. In some cases, the exaggerated O-3 pollution over the SCS was recirculated to the coastal inshore by sea breeze, leading to aggravated O-3 pollution in coastal cities. The findings are applicable to similar mesoscale environments around the world where the maritime atmosphere is potentially influenced by severe continental air pollution.
Publisher: Copernicus GmbH
Journal: Atmospheric chemistry and physics 
ISSN: 1680-7316
EISSN: 1680-7324
DOI: 10.5194/acp-18-4277-2018
Rights: © Author(s) 2018. This work is distributed under the Creative Commons Attribution 4.0 License (https://creativecommons.org/licenses/by/4.0/).
The following publication Wang, H., Lyu, X. P., Guo, H., Wang, Y., Zou, S. C., Ling, Z. H., … & Shen, J. (2018). Ozone pollution around a coastal region of south China sea : interaction between marine and continental air. Atmospheric Chemistry and Physics, 18(6), 4277-4295 is available at https://dx.doi.org/10.5194/acp-18-4277-2018
Appears in Collections:Journal/Magazine Article

Files in This Item:
File Description SizeFormat 
Wang_Ozone_Pollution_Coastal.pdf9.42 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

352
Last Week
4
Last month
Citations as of Mar 24, 2024

Downloads

208
Citations as of Mar 24, 2024

SCOPUSTM   
Citations

79
Citations as of Mar 28, 2024

WEB OF SCIENCETM
Citations

72
Citations as of Mar 28, 2024

Google ScholarTM

Check

Altmetric


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