The role of preconditioning in the evolution of open-ocean deep convection

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dc.identifier.uri Noh, Y. Cheon, W.G. Raasch, S. 2019-10-09T10:27:13Z 2019-10-09T10:27:13Z 2003
dc.identifier.citation Noh, Y.; Cheon, W.G.; Raasch, S.: The role of preconditioning in the evolution of open-ocean deep convection. In: Journal of Physical Oceanography 33 (2003), Nr. 6, S. 1145-1166. DOI:<1145:TROPIT>2.0.CO;2
dc.description.abstract Large-eddy simulation of open-ocean deep convection shows that the evolution of convection appears in a fundamentally different pattern, depending on the precondition of the ocean and the magnitude of the surface buoyancy flux. As the intensity of the cyclonic gyre in the ocean under the cooling increases, the pattern of convection is transformed from “distributed convection” to “localized convection.” In localized convection the typical pattern of open-ocean deep convection appears, such as the generation of baroclinic instability and large lateral buoyancy transfer, secondary circulation, restratification, and the breakup of the original cyclonic gyre. On the other hand, in distributed convection small-scale convective plumes appear uniformly over the whole surface similarly to the convective boundary layer without generating the typical features of open-ocean deep convection. Hence, an enormous difference in the generated eddy kinetic energies exists between the two cases. It is also found that a stronger cooling at the sea surface suppresses the transition from distributed convection to localized convection. Dimensional analysis provides the parameters to characterize the pattern of convection, and the critical condition for the transition is estimated by analyzing the numerical results. eng
dc.language.iso eng
dc.publisher Boston, Massachusetts : American Meteorological Society
dc.relation.ispartofseries Journal of Physical Oceanography 33 (2003), Nr.6
dc.rights Es gilt deutsches Urheberrecht. Das Dokument darf zum eigenen Gebrauch kostenfrei genutzt, aber nicht im Internet bereitgestellt oder an Außenstehende weitergegeben werden.
dc.subject Large-eddy simulation eng
dc.subject.ddc 550 | Geowissenschaften ger
dc.subject.ddc 551 | Geologie, Hydrologie, Meteorologie ger
dc.title The role of preconditioning in the evolution of open-ocean deep convection
dc.type article
dc.type Text
dc.relation.essn 1520-0485
dc.relation.issn 0022-3670
dc.bibliographicCitation.issue 6
dc.bibliographicCitation.volume 33
dc.bibliographicCitation.firstPage 1145
dc.bibliographicCitation.lastPage 1166
dc.description.version publishedVersion
tib.accessRights frei zug�nglich

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