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Article: Synoptic conditions associated with high carbon monoxide episodes at a coastal station in Hong Kong

TitleSynoptic conditions associated with high carbon monoxide episodes at a coastal station in Hong Kong
Authors
KeywordsAir Pollutants
Continental Outflow
Maritime Inflow
Synoptic Environments
Transport
Issue Date1999
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/atmosenv
Citation
Atmospheric Environment, 1999, v. 33 n. 19, p. 3087-3095 How to Cite?
AbstractThe effect of different synoptic environments and the associated meteorological conditions on the transport of CO to a coastal station located at the southeastern tip of Hong Kong are examined. Based on the 1994 data, we found that the appearance of a Siberia high pressure, the passage of a cold front, the passage of a trough, and the existence of a tropical cyclone to the east to southeast of Hong Kong frequently gave rise to continental outflow from a northeasterly to a northwesterly direction. This continental airstream, which is highly contaminated with anthropogenic air pollutants, raised the CO concentration at the station to a level significantly above the oceanic value (measured to be around 81 pbbv under persistent maritime flow conditions). We also identified 20 high CO episodes in which the CO concentration of at least two consecutive hourly means in a given month exceeded two standard deviations from the monthly mean. All these episodes were directly associated with one of the above four types of synoptic environments with the winds being moderate to light northwesterly to northeasterly.
Persistent Identifierhttp://hdl.handle.net/10722/157813
ISSN
2015 Impact Factor: 3.459
2015 SCImago Journal Rankings: 1.999
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorChung, KKen_US
dc.contributor.authorChan, JCLen_US
dc.contributor.authorNg, CNen_US
dc.contributor.authorLam, KSen_US
dc.contributor.authorWang, Ten_US
dc.date.accessioned2012-08-08T08:55:47Z-
dc.date.available2012-08-08T08:55:47Z-
dc.date.issued1999en_US
dc.identifier.citationAtmospheric Environment, 1999, v. 33 n. 19, p. 3087-3095en_US
dc.identifier.issn1352-2310en_US
dc.identifier.urihttp://hdl.handle.net/10722/157813-
dc.description.abstractThe effect of different synoptic environments and the associated meteorological conditions on the transport of CO to a coastal station located at the southeastern tip of Hong Kong are examined. Based on the 1994 data, we found that the appearance of a Siberia high pressure, the passage of a cold front, the passage of a trough, and the existence of a tropical cyclone to the east to southeast of Hong Kong frequently gave rise to continental outflow from a northeasterly to a northwesterly direction. This continental airstream, which is highly contaminated with anthropogenic air pollutants, raised the CO concentration at the station to a level significantly above the oceanic value (measured to be around 81 pbbv under persistent maritime flow conditions). We also identified 20 high CO episodes in which the CO concentration of at least two consecutive hourly means in a given month exceeded two standard deviations from the monthly mean. All these episodes were directly associated with one of the above four types of synoptic environments with the winds being moderate to light northwesterly to northeasterly.en_US
dc.languageengen_US
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/atmosenven_US
dc.relation.ispartofAtmospheric Environmenten_US
dc.subjectAir Pollutantsen_US
dc.subjectContinental Outflowen_US
dc.subjectMaritime Inflowen_US
dc.subjectSynoptic Environmentsen_US
dc.subjectTransporten_US
dc.titleSynoptic conditions associated with high carbon monoxide episodes at a coastal station in Hong Kongen_US
dc.typeArticleen_US
dc.identifier.emailNg, CN:cnng@hkucc.hku.hken_US
dc.identifier.authorityNg, CN=rp00606en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1016/S1352-2310(97)00328-2en_US
dc.identifier.scopuseid_2-s2.0-0033178251en_US
dc.identifier.hkuros54263-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0033178251&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume33en_US
dc.identifier.issue19en_US
dc.identifier.spage3087en_US
dc.identifier.epage3095en_US
dc.identifier.isiWOS:000080310900001-
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridChung, KK=36643556600en_US
dc.identifier.scopusauthoridChan, JCL=7403287195en_US
dc.identifier.scopusauthoridNg, CN=7401705590en_US
dc.identifier.scopusauthoridLam, KS=35121680600en_US
dc.identifier.scopusauthoridWang, T=8720083500en_US

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