Impacts of midlatitude precursor emissions and local photochemistry on ozone abundances in the Arctic

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dc.contributor.authorWalker, T. W.
dc.contributor.authorJones, D. B. A.
dc.contributor.authorParrington, M.
dc.contributor.authorHenze, D. K.
dc.contributor.authorMurray, L. T.
dc.contributor.authorBottenheim, J. W.
dc.contributor.authorAnlauf, K.
dc.contributor.authorWorden, J. R.
dc.contributor.authorBowman, K. W.
dc.contributor.authorShim, C.
dc.contributor.authorSingh, K.
dc.contributor.authorKopacz, M.
dc.contributor.authorTarasick, D. W.
dc.contributor.authorDavies, J.
dc.contributor.authorvon der Gathen, P.
dc.contributor.authorThompson, Anne M.
dc.contributor.authorCarouge, C. C.
dc.date.accessioned2024-07-12T14:57:00Z
dc.date.available2024-07-12T14:57:00Z
dc.date.issued2012-01-11
dc.description.abstractWe assess the impact of transport of pollution from midlatitudes on the abundance of ozone in the Arctic in summer 2006 using the GEOS-Chem global chemical transport model and its adjoint. We find that although the impact of midlatitude emissions on ozone abundances in the Arctic is at a maximum in fall and winter, in July transport from North America, Asia, and Europe together contributed about 25% of surface ozone abundances in the Arctic. Throughout the summer, the dominant source of ozone in the Arctic troposphere was photochemical production within the Arctic, which accounted for more than 50% of the ozone in the Arctic boundary layer and as much as 30%–40% of the ozone in the middle troposphere. An adjoint sensitivity analysis of the impact of NOx emissions on ozone at Alert shows that on synoptic time scales in both the lower and middle troposphere, ozone abundances are more sensitive to emissions between 50°N and 70°N, with important influences from anthropogenic, biomass burning, soil, and lightning sources. Although local surface NOx emissions contribute to ozone formation, transport of NOx in the form of peroxyacetyl nitrate (PAN) from outside the Arctic and from the upper troposphere also contributed to ozone production in the lower troposphere. We find that in late May and June the release of NOx from PAN decomposition accounted for 93% and 55% of ozone production at the Arctic surface, respectively.
dc.description.sponsorshipThis work was supported by funding from the Natural Sciences and Engineering Research Council of Canada and the Canadian Foundation for Climate and Atmospheric Sciences. Ozone-sonde data were retrieved from the World Ozone and Ultraviolet Radiation Data Centre (WOUDC) at http://www.woudc.org/.
dc.description.urihttps://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2011JD016370
dc.format.extent17 pages
dc.genrejournal articles
dc.identifierdoi:10.13016/m2mf0l-ggay
dc.identifier.citationWalker, T. W., D. B. A. Jones, M. Parrington, D. K. Henze, L. T. Murray, J. W. Bottenheim, K. Anlauf, et al. “Impacts of Midlatitude Precursor Emissions and Local Photochemistry on Ozone Abundances in the Arctic.” Journal of Geophysical Research: Atmospheres 117, no. D1 (2012). https://doi.org/10.1029/2011JD016370.
dc.identifier.urihttps://doi.org/10.1029/2011JD016370
dc.identifier.urihttp://hdl.handle.net/11603/34827
dc.language.isoen_US
dc.publisherAGU
dc.relation.isAvailableAtThe University of Maryland, Baltimore County (UMBC)
dc.relation.ispartofUMBC GESTAR II
dc.rights©2018. American Geophysical Union. All Rights Reserved
dc.subjectozone
dc.subjectadjoint
dc.subjectArctic
dc.subjectassimilation
dc.subjectsources
dc.subjecttroposphere
dc.titleImpacts of midlatitude precursor emissions and local photochemistry on ozone abundances in the Arctic
dc.typeText
dcterms.creatorhttps://orcid.org/0000-0002-7829-0920

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