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dc.contributor.authorChemel, C.
dc.contributor.authorStaquet, C.
dc.contributor.authorLargeron, Y.
dc.date.accessioned2013-01-03T12:59:18Z
dc.date.available2013-01-03T12:59:18Z
dc.date.issued2009
dc.identifier.citationChemel , C , Staquet , C & Largeron , Y 2009 , ' Generation of internal gravity waves by a katabatic wind in an idealized alpine valley ' , Meteorology and Atmospheric Physics , vol. 103 , no. 1-4 , pp. 187-194 . https://doi.org/10.1007/s00703-009-0349-4
dc.identifier.issn0177-7971
dc.identifier.otherPURE: 169884
dc.identifier.otherPURE UUID: 92c626cf-b9bd-40eb-adef-43553ae64cd6
dc.identifier.otherdspace: 2299/3203
dc.identifier.otherScopus: 63149092200
dc.identifier.urihttp://hdl.handle.net/2299/9476
dc.description“The original publication is available at www.springerlink.com”. Copyright Springer. DOI: 10.1007/s00703-009-0349-4
dc.description.abstractThe dynamics of the atmospheric boundary layer in an alpine valley at night or in winter is dominated by katabatic (or down-slope) flows. As predicted by McNider (1982) oscillations along the slope are expected to occur if the fluid is stably-stratified, as a result of buoyancy and adiabatic cooling/warming effects. Internal gravity waves must also be generated by the katabatic flows because of the stable stratification. The aim of the present paper is to identify and characterize the oscillations in the katabatic flow as well as the internal gravity wave field emitted by this flow. Numerical simulations with the ARPS code are performed for this purpose, for an idealized configuration of the Chamonix valley. We show that the oscillations near the slope are non propagating motions, whose period is well predicted by the single particle model of McNider (1982) and equal to 10 to 11 mn. As for the wave field, its frequency is close to 0.85 N, where N is the value of the Brunt-Väisälä frequency in the generation region of the waves, consistently with previous academic studies of wave emission by turbulent motions in a stratified fluid. This leads to a wave period of 7 to 8 mn.en
dc.language.isoeng
dc.relation.ispartofMeteorology and Atmospheric Physics
dc.rightsOpen
dc.titleGeneration of internal gravity waves by a katabatic wind in an idealized alpine valleyen
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.contributor.institutionCentre for Atmospheric and Climate Physics Research
dc.contributor.institutionAtmospheric Dynamics & Air Quality
dc.contributor.institutionScience & Technology Research Institute
dc.description.statusPeer reviewed
dc.relation.schoolSchool of Physics, Astronomy and Mathematics
dcterms.dateAccepted2009
rioxxterms.versionofrecordhttps://doi.org/10.1007/s00703-009-0349-4
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue
herts.rights.accesstypeOpen


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