Vis enkel innførsel

dc.contributor.authorOrsolini, Yvan
dc.contributor.authorLimpasuvan, Varavut
dc.contributor.authorPérot, Kristell
dc.contributor.authorEspy, Patrick Joseph
dc.contributor.authorHibbins, Robert
dc.contributor.authorLossow, Stefan
dc.contributor.authorRaaholt Larsson, Katarina
dc.contributor.authorMurtagh, Donal
dc.date.accessioned2017-10-23T13:25:37Z
dc.date.available2017-10-23T13:25:37Z
dc.date.issued2017-03
dc.PublishedOrsolini Y, Limpasuvan V, Pérot, Espy PJ, Hibbins RE, Lossow S, Raaholt Larsson, Murtagh D. Modelling the descent of nitric oxide during the elevated stratopause event of January 2013. Journal of Atmospheric and Solar-Terrestrial Physics. 2017;155:50-61eng
dc.identifier.issn1364-6826en_US
dc.identifier.issn1879-1824en_US
dc.identifier.urihttps://hdl.handle.net/1956/16777
dc.description.abstractUsing simulations with a whole-atmosphere chemistry-climate model nudged by meteorological analyses, global satellite observations of nitrogen oxide (NO) and water vapour by the Sub-Millimetre Radiometer instrument (SMR), of temperature by the Microwave Limb Sounder (MLS), as well as local radar observations, this study examines the recent major stratospheric sudden warming accompanied by an elevated stratopause event (ESE) that occurred in January 2013. We examine dynamical processes during the ESE, including the role of planetary wave, gravity wave and tidal forcing on the initiation of the descent in the mesosphere-lower thermosphere (MLT) and its continuation throughout the mesosphere and stratosphere, as well as the impact of model eddy diffusion. We analyse the transport of NO and find the model underestimates the large descent of NO compared to SMR observations. We demonstrate that the discrepancy arises abruptly in the MLT region at a time when the resolved wave forcing and the planetary wave activity increase, just before the elevated stratopause reforms. The discrepancy persists despite doubling the model eddy diffusion. While the simulations reproduce an enhancement of the semi-diurnal tide following the onset of the 2013 SSW, corroborating new meteor radar observations at high northern latitudes over Trondheim (63.4°N), the modelled tidal contribution to the forcing of the mean meridional circulation and to the descent is a small portion of the resolved wave forcing, and lags it by about ten days.en_US
dc.language.isoengeng
dc.publisherElsevieren_US
dc.rightsAttribution CC BY-NC-NDeng
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/eng
dc.subjectStratospheric sudden warmingeng
dc.subjectMiddle atmospheric circulationeng
dc.subjectPlanetary waveseng
dc.subjectGravity waveseng
dc.subjectNitric oxideeng
dc.titleModelling the descent of nitric oxide during the elevated stratopause event of January 2013en_US
dc.typePeer reviewed
dc.typeJournal article
dc.date.updated2017-09-21T08:34:06Z
dc.description.versionpublishedVersionen_US
dc.rights.holderCopyright 2017 The Author(s)en_US
dc.identifier.doihttps://doi.org/10.1016/j.jastp.2017.01.006
dc.identifier.cristin1470073
dc.source.journalJournal of Atmospheric and Solar-Terrestrial Physics
dc.relation.projectNorges forskningsråd: 222390
dc.relation.projectNorges forskningsråd: 223252


Tilhørende fil(er)

Thumbnail

Denne innførselen finnes i følgende samling(er)

Vis enkel innførsel

Attribution CC BY-NC-ND
Med mindre annet er angitt, så er denne innførselen lisensiert som Attribution CC BY-NC-ND