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dc.contributor.authorPino González, David
dc.contributor.authorVilà-Guerau de Arellano, Jordi
dc.contributor.authorKim, Si-Wan
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Física Aplicada
dc.date.accessioned2007-12-10T12:59:57Z
dc.date.available2007-12-10T12:59:57Z
dc.date.created2005-07
dc.date.issued2006-09
dc.identifier.citationPino, D., Vilà-Guerau de Arellano, Kim, S. -W. Representing Sheared Convective Boundary Layer by Zeroth- and First-Order-Jump. Journal of Applied Meteorology and Climatology. 2006, 45, 1224-1243
dc.identifier.issn1558-8432
dc.identifier.urihttp://hdl.handle.net/2117/1402
dc.description.abstractDry convective boundary layers characterized by a significant wind shear on the surface and at the inversion are studied by means of the mixed-layer theory. Two different representations of the entrainment zone, each of which has a different closure of the entrainment heat flux, are considered. The simpler of the two is based on a sharp discontinuity at the inversion (zeroth-order jump), whereas the second one prescribes a finite depth of the inversion zone (first-order jump). Large-eddy simulation data are used to provide the initial conditions for the mixed-layer models, and to verify their results. Two different atmospheric boundary layers with different stratification in the free atmosphere are analyzed. It is shown that, despite the simplicity of the zeroth-order-jump model, it provides similar results to the first-order-jump model and can reproduce the evolution of the mixed-layer variables obtained by the large-eddy simulations in sheared convective boundary layers. The mixed-layer model with both closures compares better with the large-eddy simulation results in the atmospheric boundary layer characterized by a moderate wind shear and a weak temperature inversion. These results can be used to represent the flux of momentum, heat, and other scalars at the entrainment zone in general circulation or chemistry transport models.
dc.format.extent20 pàgs
dc.language.isoeng
dc.publisherAmerican Meteorological Society
dc.subjectÀrees temàtiques de la UPC::Física
dc.subject.lcshBoundary layer (Meteorology)
dc.subject.otherLarge eddy simulation
dc.titleRepresenting Sheared Convective Boundary Layer by Zeroth- and First-Order-Jump
dc.typeArticle
dc.subject.lemacCapa límit (Meteorologia)
dc.contributor.groupUniversitat Politècnica de Catalunya. DF - Dinàmica No Lineal de Fluids
dc.description.peerreviewedPeer Reviewed
dc.rights.accessOpen Access
local.personalitzacitaciotrue


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