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dc.contributor.authorSchultz, Martin G.
dc.contributor.authorJacob, Daniel James
dc.contributor.authorWang, Yuhang
dc.contributor.authorLogan, Jennifer A.
dc.contributor.authorAtlas, Elliot L.
dc.contributor.authorBlake, Donald R.
dc.contributor.authorBlake, Nicola J.
dc.contributor.authorBradshaw, John D.
dc.contributor.authorBrowell, Edward V.
dc.contributor.authorFenn, Marta A.
dc.contributor.authorFlocke, Frank
dc.contributor.authorGregory, Gerald L.
dc.contributor.authorHeikes, Brian G.
dc.contributor.authorSachse, Glen W.
dc.contributor.authorSandholm, Scott T.
dc.contributor.authorShetter, Richard E.
dc.contributor.authorSingh, Hanwant B.
dc.contributor.authorTalbot, Robert W.
dc.date.accessioned2015-03-12T17:54:59Z
dc.date.issued1999
dc.identifier.citationSchultz, Martin G., Daniel J. Jacob, Yuhang Wang, Jennifer A. Logan, Elliot L. Atlas, Donald R. Blake, Nicola J. Blake, et al. 1999. “On the Origin of Tropospheric Ozone and NOx over the Tropical South Pacific.” Journal of Geophysical Research 104 (D5): 5829. doi:10.1029/98jd02309.en_US
dc.identifier.issn0148-0227en_US
dc.identifier.urihttp://nrs.harvard.edu/urn-3:HUL.InstRepos:14121850
dc.description.abstractThe budgets of ozone and nitrogen oxides (NOx = NO + NO2) in the tropical South Pacific troposphere are analyzed by photochemical point modeling of aircraft observations at 0–12 km altitude from the Pacific Exploratory Mission-Tropics A campaign flown in September-October 1996. The model reproduces the observed NO2/NO concentration ratio to within 30% and has similar success in simulating observed concentrations of peroxides ( H2O2, CH3OOH), lending confidence in its use to investigate ozone chemistry. It is found that chemical production of ozone balances only half of chemical loss in the tropospheric column over the tropical South Pacific. The net loss is 1.8 × 1011 molecules cm−2 s−1. The missing source of ozone is matched by westerly transport of continental pollution into the region. Independent analysis of the regional ozone budget with a global three-dimensional model corroborates the results from the point model and reveals the importance of biomass burning emissions in South America and Africa for the ozone budget over the tropical South Pacific. In this model, biomass burning increases average ozone concentrations by 7–8 ppbv throughout the troposphere. The NOx responsible for ozone production within the South Pacific troposphere below 4 km can be largely explained by decomposition of peroxyacetylnitrate ( PAN) transported into the region with biomass burning pollution at higher altitudes.en_US
dc.description.sponsorshipEngineering and Applied Sciencesen_US
dc.language.isoen_USen_US
dc.publisherWiley-Blackwellen_US
dc.relation.isversionofdoi:10.1029/98JD02309en_US
dash.licenseLAA
dc.titleOn the origin of tropospheric ozone and NOx over the tropical South Pacificen_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.available2015-03-12T17:54:59Z
dc.identifier.doi10.1029/98JD02309*
workflow.legacycommentsCan post pub per sherpa (Publisher's version/PDF must be used in Institutional Repository 6 months after publication.)en_US
dash.authorsorderedfalse
dash.contributor.affiliatedLogan, Jennifer
dash.contributor.affiliatedJacob, Daniel
dc.identifier.orcid0000-0002-6373-3100


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