Show simple item record

dc.contributor.authorJacob, Daniel James
dc.contributor.authorHorowitz, Larry W.
dc.contributor.authorMunger, J. William
dc.contributor.authorHeikes, Brian G.
dc.contributor.authorDickerson, Russell R.
dc.contributor.authorArtz, Richard S.
dc.contributor.authorKeene, William C.
dc.date.accessioned2015-03-12T14:29:55Z
dc.date.issued1995
dc.identifier.citationJacob, Daniel J., Larry W. Horowitz, J. William Munger, Brian G. Heikes, Russell R. Dickerson, Richard S. Artz, and William C. Keene. 1995. “Seasonal Transition from NO x - to Hydrocarbon-Limited Conditions for Ozone Production over the Eastern United States in September.” Journal of Geophysical Research 100 (D5): 9315. doi:10.1029/94jd03125.en_US
dc.identifier.issn0148-0227en_US
dc.identifier.urihttp://nrs.harvard.edu/urn-3:HUL.InstRepos:14121760
dc.description.abstractConcentrations of O3, CO, NO, total reactive nitrogen oxides (NOy), H2O2, and HCHO were measured from September 4 to October 1, 1990, at a mountain ridge site in Shenandoah National Park, Virginia. The data show evidence for a transition from NOx-limited to hydrocarbon-limited conditions for O3 production over the course of September. The transition is diagnosed by large decreases of the H2O2/(NOy-NOx) and HCHO/NOy concentration ratios, weakening of the correlation between O3 and NOy- NOx concentrations, and decrease of the slope ΔO3/Δ(NOy-NOx). A high-O3 episode occurring in late September was associated with only 0.34 ppbv H2O2, indicative of hydrocarbon-limited conditions. A seasonal transition in photochemical regime over the eastern United States in September would be expected from theory; the production rate of odd hydrogen radicals decreases by a factor of 2 over the course of the month, due to decreasing UV radiation and humidity, allowing HNO3 production to become the dominant sink for odd hydrogen in the boundary layer and resulting in hydrocarbon-limited conditions for O3 production. Seasonal decline of isoprene emission can greatly accentuate the transition.en_US
dc.description.sponsorshipEngineering and Applied Sciencesen_US
dc.language.isoen_USen_US
dc.publisherWiley-Blackwellen_US
dc.relation.isversionofdoi:10.1029/94JD03125en_US
dash.licenseLAA
dc.titleSeasonal transition from NO x - to hydrocarbon-limited conditions for ozone production over the eastern United States in Septemberen_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.available2015-03-12T14:29:55Z
dc.identifier.doi10.1029/94JD03125*
workflow.legacycommentsCan post pub per sherpa (Publisher's version/PDF must be used in Institutional Repository 6 months after publication.)en_US
dash.contributor.affiliatedMunger, J.
dash.contributor.affiliatedJacob, Daniel
dc.identifier.orcid0000-0002-6373-3100


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record