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Article: Cool season pollution episodes in Hong Kong, 1996-2002

TitleCool season pollution episodes in Hong Kong, 1996-2002
Authors
KeywordsHong Kong winter and spring episodes
Monsoon system
Dust storm
Pollutant transport
Issue Date2003
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/atmosenv
Citation
Atmospheric Environment, 2003, v. 37, p. 2927-2939 How to Cite?
AbstractSeven serious pollution episodes occurred in Hong Kong during the winter and spring seasons of 1996–2002 with NO2 and/or PM10 concentrations exceeding the Hong Kong Air Quality Objectives. Analyses were made with respect to general meteorological and synoptic conditions, air mass back trajectories, satellite images and PM10 chemical species characterization. Six of the episodes are related to continental anticyclonic systems in the cool season, with one believed to be caused by cyclogenesis over southwestern China. Episodic conditions were usually associated with protracted weak northeast monsoon conditions, but one of the episodes was caused by a surge of easterly monsoon. On seven out of nine of the episode days, interactions are observed between the anticyclonic system and/or dust events with coastal sea breezes. Coupled with intense low level inversions, pollutants accumulated to episodic levels. Long range transport of pollutants from mainland China by the northeast monsoon is evident from the analyses. It is remarkable that all the three episodes in the spring season are also traceable to dust storm events originating in deserts in north or northwestern China. High concentrations of As, Mn, V, non-sea-salt sulphate and ammonium_N on the episode days indicate the significant impact of fossil fuel burning, while enhanced Al, Ca, Fe and Mn concentrations show the effect of mineral dusts and crustal materials.
Persistent Identifierhttp://hdl.handle.net/10722/89731
ISSN
2015 Impact Factor: 3.459
2015 SCImago Journal Rankings: 1.999
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorHills, PRen_HK
dc.contributor.authorLee, YCen_HK
dc.date.accessioned2010-09-06T10:01:06Z-
dc.date.available2010-09-06T10:01:06Z-
dc.date.issued2003en_HK
dc.identifier.citationAtmospheric Environment, 2003, v. 37, p. 2927-2939en_HK
dc.identifier.issn1352-2310en_HK
dc.identifier.urihttp://hdl.handle.net/10722/89731-
dc.description.abstractSeven serious pollution episodes occurred in Hong Kong during the winter and spring seasons of 1996–2002 with NO2 and/or PM10 concentrations exceeding the Hong Kong Air Quality Objectives. Analyses were made with respect to general meteorological and synoptic conditions, air mass back trajectories, satellite images and PM10 chemical species characterization. Six of the episodes are related to continental anticyclonic systems in the cool season, with one believed to be caused by cyclogenesis over southwestern China. Episodic conditions were usually associated with protracted weak northeast monsoon conditions, but one of the episodes was caused by a surge of easterly monsoon. On seven out of nine of the episode days, interactions are observed between the anticyclonic system and/or dust events with coastal sea breezes. Coupled with intense low level inversions, pollutants accumulated to episodic levels. Long range transport of pollutants from mainland China by the northeast monsoon is evident from the analyses. It is remarkable that all the three episodes in the spring season are also traceable to dust storm events originating in deserts in north or northwestern China. High concentrations of As, Mn, V, non-sea-salt sulphate and ammonium_N on the episode days indicate the significant impact of fossil fuel burning, while enhanced Al, Ca, Fe and Mn concentrations show the effect of mineral dusts and crustal materials.-
dc.languageengen_HK
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/atmosenven_HK
dc.relation.ispartofAtmospheric Environmenten_HK
dc.subjectHong Kong winter and spring episodes-
dc.subjectMonsoon system-
dc.subjectDust storm-
dc.subjectPollutant transport-
dc.titleCool season pollution episodes in Hong Kong, 1996-2002en_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1352-2310&volume=37&spage=2927&epage=2939&date=2003&atitle=Cool+season+pollution+episodes+in+Hong+Kong,+1996-2002en_HK
dc.identifier.emailHills, PR: phills@hkucc.hku.hken_HK
dc.identifier.authorityHills, PR=rp00858en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/S1352-2310(03)00296-6-
dc.identifier.scopuseid_2-s2.0-0038513384-
dc.identifier.hkuros76856en_HK
dc.identifier.isiWOS:000183902000005-

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