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dc.contributor.authorMing, Alisonen
dc.contributor.authorHitchcock, Adamen
dc.contributor.authorHaynes, Peteren
dc.date.accessioned2016-02-19T16:37:42Z
dc.date.available2016-02-19T16:37:42Z
dc.date.issued2016-04-15en
dc.identifier.citationMing et al. Journal of the Atmospheric Sciences (2016)en
dc.identifier.issn0022-4928
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/253873
dc.description.abstractThe processes responsible for double peak latitudinal structures in the time averaged tropical lower stratospheric upwelling, centred near 70hPa and 20º N–S, previously noted in ERA-Interim and other reanalysis and model datasets, are considered. It is demonstrated that the structure of the wave force resolved by ERA-Interim consistently balances the angular momentum transport associated with the double peak. Analysis of the corresponding structures in diabatic heating rates from ERA-Interim indicates that the peaks arise predominantly from meridional structure in ozone concentrations and the associated absorption of both shortwave and longwave radiation. Additional smaller contributions arise from local absorption of longwave radiation emitted from the relatively warm layers above and below, as well as from cloud-related radiative effects and non-radiative diabatic heating. The temperature at 70 hPa is slightly higher near 20º N–S than at the Equator, opposite to what would be expected if the latitudinal structure in radiative heating was associated with local relaxation. It is proposed on the basis of this analysis that the primary cause of the peaks in upwelling is the externally imposed (i.e., non-relaxational) part of the radiative heating field. The dynamical plausibility of this hypothesis is investigated in a companion paper.
dc.description.sponsorshipAM and PHi acknowledge funding support from the European Research Council through the ACCI project (grant number 267760) lead by John Pyle. PHi also acknowledges support from an NSERC postdoctoral fellowship.
dc.languageEnglishen
dc.language.isoenen
dc.publisherAmerican Meteorological Society
dc.titleThe double peak in upwelling and heating in the tropical lower stratosphere.en
dc.typeArticle
dc.description.versionThis is the final version of the article. It first appeared from the American Meteorological Society via http://dx.doi.org/10.1175/JAS-D-15-0293.1en
prism.publicationDate2016en
prism.publicationNameJournal of the Atmospheric Sciencesen
dcterms.dateAccepted2016-02-08en
rioxxterms.versionofrecord10.1175/JAS-D-15-0293.1en
rioxxterms.versionVoR
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserveden
rioxxterms.licenseref.startdate2016-04-15en
dc.contributor.orcidMing, Alison [0000-0001-5786-6188]
dc.contributor.orcidHitchcock, Adam [0000-0001-8993-3808]
dc.contributor.orcidHaynes, Peter [0000-0002-7726-6988]
dc.identifier.eissn1520-0469
rioxxterms.typeJournal Article/Reviewen
pubs.funder-project-idEuropean Research Council (267760)
cam.orpheus.successThu Jan 30 12:55:22 GMT 2020 - The item has an open VoR version.*
rioxxterms.freetoread.startdate2100-01-01


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