The effectiveness of N2O in depleting stratospheric ozone

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dc.contributor.authorRevell LE
dc.contributor.authorBodeker GE
dc.contributor.authorSmale D
dc.contributor.authorLehmann R
dc.contributor.authorHuck PE
dc.contributor.authorWilliamson BE
dc.contributor.authorRozanov E
dc.contributor.authorStruthers H
dc.date.accessioned2018-08-09T01:53:11Z
dc.date.available2018-08-09T01:53:11Z
dc.date.issued2012en
dc.date.updated2018-06-13T23:36:09Z
dc.description.abstractRecently, it was shown that of the ozone-depleting substances currently emitted, N2O emissions (the primary source of stratospheric NOx dominate, and are likely to do so throughout the 21st century. To investigate the links between N2O and NOx concentrations, and the effects of NOx on ozone in a changing climate, the evolution of stratospheric ozone from 1960 to 2100 was simulated using the NIWA-SOCOL chemistry-climate model. The yield of NOx from N2O is reduced due to stratospheric cooling and a strengthening of the Brewer-Dobson circulation. After accounting for the reduced NOx yield, additional weakening of the primary NOx cycle is attributed to reduced availability of atomic oxygen, due to a) stratospheric cooling decreasing the atomic oxygen/ozone ratio, and b) enhanced rates of chlorine-catalyzed ozone loss cycles around 2000 and enhanced rates of HOx-induced ozone depletion. Our results suggest that the effects of N2O on ozone depend on both the radiative and chemical environment of the upper stratosphere, specifically CO2-induced cooling of the stratosphere and elevated CH4 4 emissions which enhance HOx -induced ozone loss and remove the availability of atomic oxygen to participate in NO x ozone loss cycles. © 2012. American Geophysical Union. All Rights Reserved.en
dc.identifier.doihttps://doi.org/10.1029/2012GL052143
dc.identifier.issn0094-8276
dc.identifier.urihttp://hdl.handle.net/10092/15756
dc.languageEnglish
dc.language.isoen
dc.publisherAMER GEOPHYSICAL UNIONen
dc.subjectScience & Technologyen
dc.subjectPhysical Sciencesen
dc.subjectGeosciences, Multidisciplinaryen
dc.subjectGeologyen
dc.subjectGEOSCIENCES, MULTIDISCIPLINARYen
dc.subjectMIDDLE ATMOSPHEREen
dc.subjectNITROUS-OXIDEen
dc.subjectGREENHOUSE GASESen
dc.subjectMODELen
dc.subjectIMPACTen
dc.subjectTROPOSPHEREen
dc.subjectSIMULATIONen
dc.subjectTRANSPORTen
dc.subjectMETHANEen
dc.subjectTRENDSen
dc.subject.anzsrcFields of Research::37 - Earth sciences::3701 - Atmospheric sciences::370104 - Atmospheric composition, chemistry and processesen
dc.subject.anzsrcField of Research::04 - Earth Sciences::0401 - Atmospheric Sciences::040104 - Climate Change Processesen
dc.titleThe effectiveness of N2O in depleting stratospheric ozoneen
dc.typeJournal Articleen
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