Formation of a diurnal thermocline in the ocean mixed layer simulated by LES

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dc.identifier.uri Noh, Y. Goh, G. Raasch, S. Gryschka, M. 2019-10-09T10:27:12Z 2019-10-09T10:27:12Z 2009
dc.identifier.citation Noh,Y.; Goh, G.; Raasch, S.; Gryschka M.: Formation of a diurnal thermocline in the ocean mixed layer simulated by LES. In: Journal of Physical Oceanography 39 (2009), Nr. 5, S. 1244-1257. DOI:
dc.description.abstract The formation of a diurnal thermocline in the ocean mixed layer under a stabilizing buoyancy flux was simulated successfully by large-eddy simulation, reproducing various features consistent with observation. The analysis of the simulation result revealed that the formation of a diurnal thermocline passes through two different phases: the formation of a thermocline (formation stage) and increasing thickness of the thermocline thereafter (growth stage). Turbulent kinetic energy (TKE) flux dominates TKE production within the mixed layer, but turbulence maintained by shear production at the thermocline causes stratification below the mixed layer. In addition, once the thermocline is formed, both the gradient and flux Richardson numbers maintain constant values at the thermocline. It was also found that a diurnal thermocline cannot be formed in the absence of both wave breaking and Langmuir circulation. Furthermore, the effects of stratification on turbulence were investigated based on the time series of various physical variables of turbulence at the diurnal thermocline and within the mixed layer, and the mechanism for diurnal thermocline formation is discussed. Copyright 2009 American Meteorological Society eng
dc.language.iso eng
dc.publisher Boston, Massachusetts : American Meteorological Society
dc.relation.ispartofseries Journal of Physical Oceanography 39 (2009), Nr.5
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 Oceanic mixed layer eng
dc.subject Thermocline eng
dc.subject Large eddy simulations eng
dc.subject.ddc 550 | Geowissenschaften ger
dc.subject.ddc 551 | Geologie, Hydrologie, Meteorologie ger
dc.title Formation of a diurnal thermocline in the ocean mixed layer simulated by LES
dc.type article
dc.type Text
dc.relation.essn 1520-0485
dc.relation.issn 0022-3670
dc.bibliographicCitation.issue 5
dc.bibliographicCitation.volume 39
dc.bibliographicCitation.firstPage 1244
dc.bibliographicCitation.lastPage 1257
dc.description.version publishedVersion
tib.accessRights frei zug�nglich

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