Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/6337
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dc.contributorDepartment of Civil and Environmental Engineering-
dc.creatorDing, A-
dc.creatorWang, T-
dc.creatorXue, L-
dc.creatorGao, J-
dc.creatorStohl, A-
dc.creatorLei, H-
dc.creatorJin, D-
dc.creatorRen, Y-
dc.creatorWang, X-
dc.creatorWei, XL-
dc.creatorQi, Y-
dc.creatorLiu, J-
dc.creatorZhang, X-
dc.date.accessioned2014-12-11T08:26:53Z-
dc.date.available2014-12-11T08:26:53Z-
dc.identifier.issn2169-897X-
dc.identifier.urihttp://hdl.handle.net/10397/6337-
dc.language.isoenen_US
dc.publisherWiley-Blackwellen_US
dc.rightsCopyright 2009 by the American Geophysical Union.en_US
dc.subjectAircraft measurementen_US
dc.subjectBoundary layer–free troposphere transporten_US
dc.subjectWarm conveyor belten_US
dc.subjectLagrangian simulationen_US
dc.subjectPhotochemistryen_US
dc.titleTransport of north China air pollution by midlatitude cyclones : case study of aircraft measurements in summer 2007en_US
dc.typeJournal/Magazine Articleen_US
dc.description.otherinformationAuthor name used in this publication: Wei, Xiaolin.en_US
dc.identifier.volume114-
dc.identifier.issueD8-
dc.identifier.doi10.1029/2008JD011023-
dcterms.abstractWarm conveyor belts (WCBs) and frontal activity play important roles in the long-range transport of air pollutants by lifting them from the planetary boundary layer (PBL) into the free troposphere (FT) in midlatitudes. In summer 2007, an aircraft study was carried out in northeast (NE) China in order to understand the role of midlatitude cyclones in air pollution transport in north and east China in warm seasons. During a flight on 27 June, high concentrations of ozone and related trace gases were observed, with maximum concentrations (O₃ ∼ 140 ppbv, SO₂ ∼ 14.6 ppbv, CO ∼ 1185 ppbv) recorded at an altitude of 2.6 km. In this paper we present a detailed analysis of this flight. The mesoscale meteorological model Weather Research and Forecasting (WRF) and a Lagrangian dispersion model called FLEXPART were used to aid the diagnostic analysis of the atmospheric dynamic structure and the understanding of the transport characteristics of regional and local air pollution. The flight took place in a region adjacent to a warm front associated with a weak cyclone in north China. The aircraft sampled both the WCB and warm air frontal zone of the cyclone. The simulations show that the observed high air pollution in the FT mostly originated from the North China Plain, especially the megacities Beijing and Tianjin. Their plumes were vented by a stagnant front, probably through, in part, topographic lifting by the mountains in the north, and then were quickly transported in the FT to the study region. Trajectory analysis and satellite data suggest that the observed air masses were further lifted by the WCB into the middle and upper troposphere and were exported from Asia toward North America and the Arctic.-
dcterms.accessRightsopen accessen_US
dcterms.bibliographicCitationJournal of geophysical research. Atmospheres, Apr. 2009, v. 114, no. D8, D08304-
dcterms.isPartOfJournal of geophysical research. Atmospheres-
dcterms.issued2009-04-
dc.identifier.isiWOS:000265534700006-
dc.identifier.scopus2-s2.0-66949165855-
dc.identifier.eissn2169-8996-
dc.identifier.rosgroupidr43768-
dc.description.ros2008-2009 > Academic research: refereed > Publication in refereed journal-
dc.description.oaVersion of Recorden_US
dc.identifier.FolderNumberOA_IR/PIRAen_US
dc.description.pubStatusPublisheden_US
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