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Article: Numerical study on the ozone formation inside street canyons using a chemistry box model

TitleNumerical study on the ozone formation inside street canyons using a chemistry box model
Authors
Issue Date2008
PublisherI O S Press. The Journal's web site is located at http://www.iospress.nl/html/10010742.php
Citation
Journal Of Environmental Sciences, 2008, v. 20 n. 7, p. 832-837 How to Cite?
AbstractTropospheric ozone is a secondary air pollutant produced in the presence of nitrogen oxides (NOx), volatile organic compounds (VOCs), and solar radiation. In an urban environment, ground-level vehicular exhaust is the major anthropogenic source of ozone precursors. In the cases of street canyons, pollutant dilution is weakened by the surrounding buildings that creates localized high concentration of NOx and VOCs, and thus leads to high potential of ozone formation. By considering the major physical and chemical processes, a chemistry box model is employed to investigate the characteristics of ozone formation due to vehicular exhaust inside street canyons under the worst case scenario, i.e. the calm wind condition. It is found that a high level of ozone concentration, of the order of 100 ppbv and higher, would occur inside the street canyons, in particular, when the emission rate (concentration) ratio of VOCs to NOx is greater than 10. This elevated ozone concentration appears at the transition from VOCs to NOx sensitivity and may extend to a few hundreds. © 2008 The Research Centre for Eco-Environmental Sciences, Chinese Academy of Sciences.
Persistent Identifierhttp://hdl.handle.net/10722/75545
ISSN
2015 Impact Factor: 2.208
2015 SCImago Journal Rankings: 0.832
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorLiu, CHen_HK
dc.contributor.authorLeung, DYCen_HK
dc.date.accessioned2010-09-06T07:12:13Z-
dc.date.available2010-09-06T07:12:13Z-
dc.date.issued2008en_HK
dc.identifier.citationJournal Of Environmental Sciences, 2008, v. 20 n. 7, p. 832-837en_HK
dc.identifier.issn1001-0742en_HK
dc.identifier.urihttp://hdl.handle.net/10722/75545-
dc.description.abstractTropospheric ozone is a secondary air pollutant produced in the presence of nitrogen oxides (NOx), volatile organic compounds (VOCs), and solar radiation. In an urban environment, ground-level vehicular exhaust is the major anthropogenic source of ozone precursors. In the cases of street canyons, pollutant dilution is weakened by the surrounding buildings that creates localized high concentration of NOx and VOCs, and thus leads to high potential of ozone formation. By considering the major physical and chemical processes, a chemistry box model is employed to investigate the characteristics of ozone formation due to vehicular exhaust inside street canyons under the worst case scenario, i.e. the calm wind condition. It is found that a high level of ozone concentration, of the order of 100 ppbv and higher, would occur inside the street canyons, in particular, when the emission rate (concentration) ratio of VOCs to NOx is greater than 10. This elevated ozone concentration appears at the transition from VOCs to NOx sensitivity and may extend to a few hundreds. © 2008 The Research Centre for Eco-Environmental Sciences, Chinese Academy of Sciences.en_HK
dc.languageengen_HK
dc.publisherI O S Press. The Journal's web site is located at http://www.iospress.nl/html/10010742.phpen_HK
dc.relation.ispartofJournal of Environmental Sciencesen_HK
dc.rightsJournal of Environmental Sciences. Copyright © I O S Press.en_HK
dc.subject.meshAir Pollutants - chemistryen_HK
dc.subject.meshCitiesen_HK
dc.subject.meshModels, Chemicalen_HK
dc.subject.meshOzone - chemistryen_HK
dc.subject.meshTime Factorsen_HK
dc.titleNumerical study on the ozone formation inside street canyons using a chemistry box modelen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1001-0742&volume=20&spage=832&epage=837&date=2008&atitle=Numerical+study+on+the+ozone+formation+inside+street+canyons+using+a+chemistry+box+modelen_HK
dc.identifier.emailLiu, CH:chliu@hkucc.hku.hken_HK
dc.identifier.emailLeung, DYC:ycleung@hku.hken_HK
dc.identifier.authorityLiu, CH=rp00152en_HK
dc.identifier.authorityLeung, DYC=rp00149en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/S1001-0742(08)62134-8en_HK
dc.identifier.pmid18814579-
dc.identifier.scopuseid_2-s2.0-47149107448en_HK
dc.identifier.hkuros150559en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-47149107448&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume20en_HK
dc.identifier.issue7en_HK
dc.identifier.spage832en_HK
dc.identifier.epage837en_HK
dc.identifier.isiWOS:000257724500010-
dc.publisher.placeNetherlandsen_HK
dc.identifier.scopusauthoridLiu, CH=36065161300en_HK
dc.identifier.scopusauthoridLeung, DYC=7203002484en_HK

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