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dc.contributor.authorLiu, Hongyu
dc.contributor.authorJacob, Daniel James
dc.contributor.authorBey, Isabelle
dc.contributor.authorYantosca, Robert M.
dc.contributor.authorDuncan, Bryan
dc.contributor.authorSachse, Glen
dc.date.accessioned2015-03-11T18:55:52Z
dc.date.issued2003
dc.identifier.citationLiu, Hongyu, Daniel J. Jacob, Isabelle Bey, Robert M. Yantosca, Bryan N. Duncan, and Glen W. Sachse. 2003. “Transport Pathways for Asian Pollution Outflow over the Pacific: Interannual and Seasonal Variations.” Journal of Geophysical Research 108 (D20). doi:10.1029/2002jd003102.en_US
dc.identifier.issn0148-0227en_US
dc.identifier.issn2156-2202en_US
dc.identifier.urihttp://nrs.harvard.edu/urn-3:HUL.InstRepos:14118804
dc.description.abstractThe meteorological pathways contributing to Asian pollution outflow over the Pacific are examined with a global three-dimensional model analysis of CO observations from the Transport and Chemical Evolution over the Pacific (TRACE-P) aircraft mission (February–April 2001). The model is used also to place the TRACE-P observations in an interannual (1994–2001) and seasonal context. The major process driving Asian pollution outflow in spring is frontal lifting ahead of southeastward-moving cold fronts (the leading edge of cold surges) and transport in the boundary layer behind the cold fronts. Orographic lifting over central and eastern China combines with the cold fronts to promote the transport of Chinese pollution to the free troposphere. Outflow of seasonal biomass burning in Southeast Asia during spring takes place mostly by deep convection but also by northeastward transport and frontal lifting, mixing with the anthropogenic outflow. Boundary layer outflow over the western Pacific is largely devoid of biomass burning influence. European and African (biomass burning) plumes in Asian outflow during TRACE-P were weak (<60 ppbv and 20 ppbv CO, respectively) and were not detectable in the observations because of superposition of the much larger Asian pollution signal. Spring 2001 (La Niña) was characterized by unusually frequent cold surge events in the Asian Pacific rim and strong convection in Southeast Asia, leading to unusually strong boundary layer outflow of anthropogenic emissions and convective outflow of biomass burning emissions in the upper troposphere. The Asian outflow flux of CO to the Pacific is found to vary seasonally by a factor of 3–4 (maximum in March and minimum in summer). The March maximum results from frequent cold surge events and seasonal biomass burning emissions.en_US
dc.description.sponsorshipEngineering and Applied Sciencesen_US
dc.language.isoen_USen_US
dc.publisherWiley-Blackwellen_US
dc.relation.isversionofdoi:10.1029/2002JD003102en_US
dash.licenseLAA
dc.subjectpollution transporten_US
dc.subjectoutflow pathwaysen_US
dc.subjectcarbon monoxideen_US
dc.subjectbiomass burningen_US
dc.subjectinterannual variabilityen_US
dc.titleTransport pathways for Asian pollution outflow over the Pacific: Interannual and seasonal variationsen_US
dc.typeJournal Articleen_US
dc.description.versionVersion of Recorden_US
dc.relation.journalJ. Geophys. Res.en_US
dash.depositing.authorJacob, Daniel James
dc.date.available2015-03-11T18:55:52Z
dc.identifier.doi10.1029/2002JD003102*
workflow.legacycommentsCan post pub per sherpa "Publisher's version/PDF must be used in Institutional Repository 6 months after publication."en_US
dash.contributor.affiliatedYantosca, Robert
dash.contributor.affiliatedJacob, Daniel
dc.identifier.orcid0000-0002-6373-3100


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