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dc.contributor.authorFisher, Jenny A.
dc.contributor.authorJacob, Daniel J.
dc.contributor.authorTravis, Katherine R.
dc.contributor.authorKim, Patrick S.
dc.contributor.authorMarais, Eloise A.
dc.contributor.authorChan Miller, Christopher
dc.contributor.authorYu, Karen
dc.contributor.authorZhu, Lei
dc.contributor.authorYantosca, Robert M.
dc.contributor.authorSulprizio, Melissa P.
dc.contributor.authorMao, Jingqiu
dc.contributor.authorWennberg, Paul O.
dc.contributor.authorCrounse, John D.
dc.contributor.authorTeng, Alex P.
dc.contributor.authorNguyen, Tran B.
dc.contributor.authorSt. Clair, Jason M.
dc.contributor.authorCohen, Ronald C.
dc.contributor.authorRomer, Paul
dc.contributor.authorNault, Benjamin A.
dc.contributor.authorWooldridge, Paul J.
dc.contributor.authorJimenez, Jose L.
dc.contributor.authorCampuzano-Jost, Pedro
dc.contributor.authorDay, Douglas A.
dc.contributor.authorHu, Weiwei
dc.contributor.authorShepson, Paul B.
dc.contributor.authorXiong, Fulizi
dc.contributor.authorBlake, Donald R.
dc.contributor.authorGoldstein, Allen H.
dc.contributor.authorMisztal, Pawel K.
dc.contributor.authorHanisco, Thomas F.
dc.contributor.authorWolfe, Glenn M.
dc.contributor.authorRyerson, Thomas B.
dc.contributor.authorWisthaler, Armin
dc.contributor.authorMikoviny, Tomas
dc.date.accessioned2019-10-17T07:11:12Z
dc.date.issued2016
dc.identifier.citationFisher, Jenny A., Daniel J. Jacob, Katherine R. Travis, Patrick S. Kim, Eloise A. Marais, Christopher Chan Miller, Karen Yu, et al. 2016. “Organic Nitrate Chemistry and Its Implications for Nitrogen Budgets in an Isoprene- and Monoterpene-Rich Atmosphere: Constraints from Aircraft (SEAC<sup>4</sup>RS) and Ground-Based (SOAS) Observations in the Southeast US.” Atmospheric Chemistry and Physics 16 (9): 5969–91. https://doi.org/10.5194/acp-16-5969-2016.
dc.identifier.issn1680-7367
dc.identifier.issn1680-7375
dc.identifier.urihttp://nrs.harvard.edu/urn-3:HUL.InstRepos:41555794*
dc.description.abstractFormation of organic nitrates (RONO2) during oxidation of biogenic volatile organic compounds (BVOCs: isoprene, monoterpenes) is a significant loss pathway for atmospheric nitrogen oxide radicals (NOx), but the chemistry of RONO2 formation and degradation remains uncertain. Here we implement a new BVOC oxidation mechanism (including updated isoprene chemistry, new monoterpene chemistry, and particle uptake of RONO2) in the GEOS-Chem global chemical transport model with similar to aEuro-25aEuro- x aEuro-25aEuro-km(2) resolution over North America. We evaluate the model using aircraft (SEAC(4)RS) and ground-based (SOAS) observations of NOx, BVOCs, and RONO2 from the Southeast US in summer 2013. The updated simulation successfully reproduces the concentrations of individual gas- and particle-phase RONO2 species measured during the campaigns. Gas-phase isoprene nitrates account for 25-50aEuro-% of observed RONO2 in surface air, and we find that another 10aEuro-% is contributed by gas-phase monoterpene nitrates. Observations in the free troposphere show an important contribution from long-lived nitrates derived from anthropogenic VOCs. During both campaigns, at least 10aEuro-% of observed boundary layer RONO2 were in the particle phase. We find that aerosol uptake followed by hydrolysis to HNO3 accounts for 60aEuro-% of simulated gas-phase RONO2 loss in the boundary layer. Other losses are 20aEuro-% by photolysis to recycle NOx and 15aEuro-% by dry deposition. RONO2 production accounts for 20aEuro-% of the net regional NOx sink in the Southeast US in summer, limited by the spatial segregation between BVOC and NOx emissions. This segregation implies that RONO2 production will remain a minor sink for NOx in the Southeast US in the future even as NOx emissions continue to decline.</p >.
dc.language.isoen_US
dc.publisherEuropean Geosciences Union
dash.licenseLAA
dc.titleOrganic nitrate chemistry and its implications for nitrogen budgets in an isoprene- and monoterpene-rich atmosphere: constraints from aircraft (SEAC<sup>4</sup>RS) and ground-based (SOAS) observations in the Southeast US
dc.typeJournal Article
dc.description.versionVersion of Record
dc.relation.journalAtmospheric Chemistry and Physics Discussions
dash.depositing.authorZhu, Lei::813aaccaf7ff28026d2b0608ccf52a00::600
dc.date.available2019-10-17T07:11:12Z
dash.workflow.comments1Science Serial ID 11226
dc.identifier.doi10.5194/acp-16-5969-2016
dash.source.volume16;9
dash.source.page5969-5991


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