000014630 001__ 14630
000014630 005__ 20161115100157.0
000014630 04107 $$aeng
000014630 046__ $$k2016-08-21
000014630 100__ $$aWaite, Michael
000014630 24500 $$aNumerical simulations of the atmospheric kinetic energy spectrum (INVITED)

000014630 24630 $$n24.$$p24th International Congress of Theoretical and Applied Mechanics - Book of Papers
000014630 260__ $$bInternational Union of Theoretical and Applied Mechanics, 2016
000014630 506__ $$arestricted
000014630 520__ $$2eng$$aIdealized numerical simulations of the atmospheric kinetic energy spectrum are analyzed to better understand the wide range of results reported in the literature. In particular, the role of stratified turbulence, vertical mixing, and vertical grid resolution are investigated in simulations forced by baroclinic instability. Spectra are converged when the vertical grid spacing ∆z < 200 m – which is quite high by comprehensive atmospheric model standards – but are very sensitive to resolution with coarser grids. When the vertical mixing scheme is weak, the under-resolved spectra are energized in the mesoscale. By contrast, when strong mixing is employed, the under-resolved mesoscale cascade is suppressed. Convergence requires that vertical scales associated with the full range of horizontal scales – including quasi-geostrophic scales of large-scale vortices and the buoyancy-scale of small-scale stratified turbulence – be resolved.

000014630 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000014630 653__ $$a

000014630 7112_ $$a24th International Congress of Theoretical and Applied Mechanics$$cMontreal (CA)$$d2016-08-21 / 2016-08-26$$gICTAM2016
000014630 720__ $$aWaite, Michael
000014630 8560_ $$ffischerc@itam.cas.cz
000014630 8564_ $$s39853$$uhttps://invenio.itam.cas.cz/record/14630/files/TS.FM09-4.01.pdf$$yOriginal version of the author's contribution as presented on CD,  page 1119, code TS.FM09-4.01
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000014630 962__ $$r13812
000014630 980__ $$aPAPER