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Vertical turbulence structure and second‐moment budgets in convection with rotation: A large‐eddy simulation study by D. V. Mironov; V. M. Gryanik; C.‐H. Moeng; D. J. Olbers; T. H. Warncke is a Earth and Planetary Sciences article available to read on EtoBox.

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## Abstract The structure of the instantaneous flow fields and turbulence statistics and the second‐order moment budgets in convection affected by rotation are analysed using a large‐eddy simulation (LES) dataset. Three archetypes of convective flows driven by the surface buoyancy flux are generated. One is the reference case of the non‐rotating convective boundary layer (CBL) growing into a quiescent stably stratified fluid. The other two are CBLs affected by rotation. In the geophysical turbulence context, these non‐rotating and rotating CBLs mimic an early stage and a mature stage, respectively, of the vertical mixing phase of open‐ocean deep convection. Instantaneous flow structures reveal strong localization of the buoyancy anomalies and the n on‐hydrostatic pressure anomalies near the surface in rotating CBLs and their dilution as one moves towards the CBL outer edge. These anomalies are associated with the localized cyclonic vortices which are the centres of intense vertical motions. Most of the cyclones never reach the outer edge of the CBL. Increasing rotation results in less mixing, reducing the entrapment flux at the CBL outer edge and maintaining a negative buoyancy gra

Who reads Vertical turbulence structure and second‐moment budgets in convection with rotation: A large‐eddy simulation study?

Author

D. V. Mironov; V. M. Gryanik; C.‐H. Moeng; D. J. Olbers; T. H. Warncke

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); Wiley-Blackwell; Wiley (ISSN 0035-9009)

Published

2000

Language

EN

Field

Earth and Planetary Sciences (Physical Sciences)