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dc.contributor.authorKeitzl, Thomas
dc.contributor.authorMellado González, Juan Pedro
dc.contributor.authorNotz, Dirk
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Física
dc.identifier.citationKeitzl, T.; Mellado, J. P.; Notz, D. Reconciling estimates of the ratio of heat and salt fluxes at the ice-ocean interface. "Journal of geophysical research: oceans", 2 Desembre 2016, vol. 121, p. 8419-8433.
dc.description.abstractThe heat exchange between floating ice and the underlying ocean is determined by the interplay of diffusive fluxes directly at the ice–ocean interface and turbulent fluxes away from it. In this study, we examine this interplay through direct numerical simulations of free convection. Our results show that an estimation of the interface flux ratio based on direct measurements of the turbulent fluxes can be difficult because the flux ratio varies with depth. As an alternative, we present a consistent evaluation of the flux ratio based on the total heat and salt fluxes across the boundary layer. This approach allows us to reconcile previous estimates of the ice–ocean interface conditions. We find that the ratio of heat and salt fluxes directly at the interface is 83–100 rather than 33 as determined by previous turbulence measurements in the outer layer. This can cause errors in the estimated ice-ablation rate from field measurements of up to 40% if they are based on the three-equation formulation.
dc.format.extent15 p.
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.subjectÀrees temàtiques de la UPC::Física
dc.subject.lcshAtmospheric physics
dc.subject.lcshIce--Thermal properties
dc.subject.lcshOcean--Thermal properties
dc.subject.lcshOcean-atmosphere interaction
dc.subject.lcshTurbulent boundary layer
dc.subject.otherIce-ocean interface
dc.subject.otherinterface heat and salt fluxes
dc.subject.otherDirect numerical simulation
dc.titleReconciling estimates of the ratio of heat and salt fluxes at the ice-ocean interface
dc.subject.lemacCapa límit (Meteorologia)
dc.subject.lemacFísica atmosfèrica
dc.description.peerreviewedPeer Reviewed
dc.rights.accessOpen Access
dc.description.versionPostprint (published version)
local.citation.authorKeitzl, T.; Mellado, J. P.; Notz, D.
local.citation.publicationNameJournal of geophysical research: oceans

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