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pro vyhledávání: '"Eady, P"'
One mechanistic interpretation of baroclinic instability is that of mutual constructive interference of Rossby edge-waves. While the two edge-waves and their relative phase-shifts are invoked as part of the mechanistic interpretation, the phase-tilts
Externí odkaz:
http://arxiv.org/abs/2404.12417
Chynoweth and Sewell proposed a mathematical model for an atmospheric front based on the singularities of the Legendre transformation between different pairs of dual variables. Drawing inspiration from their work, we formalize the idea of a Chynoweth
Externí odkaz:
http://arxiv.org/abs/2405.09218
Akademický článek
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Autor:
Egan, Charlie P., Bourne, David P., Cotter, Colin J., Cullen, Mike J. P., Pelloni, Beatrice, Roper, Steven M., Wilkinson, Mark
Publikováno v:
Journal of Computational Physics, Volume 469, 111542 (2022)
We present a new implementation of the geometric method of Cullen & Purser (1984) for solving the semi-geostrophic Eady slice equations which model large scale atmospheric flows and frontogenesis. The geometric method is a Lagrangian discretisation,
Externí odkaz:
http://arxiv.org/abs/2203.04903
Autor:
Gallet, Basile, Miquel, Benjamin, Hadjerci, Gabriel, Burns, Keaton J., Flierl, Glenn R., Ferrari, Raffaele
We numerically and theoretically investigate the Boussinesq Eady model, where a rapidly rotating density-stratified layer of fluid is subject to a meridional temperature gradient in thermal wind balance with a uniform vertically sheared zonal flow. T
Externí odkaz:
http://arxiv.org/abs/2202.02755
Publikováno v:
J. Fluid Mech. (2020), vol. 885, A29
The problem of optimal initial disturbances in thermal wind shear is revisited and extended to include non-hydrostatic effects. This systematic study compares transient and modal growth rates of submesoscale instabilities over a large range of zonal
Externí odkaz:
http://arxiv.org/abs/2004.07215
Autor:
Huw C. Davies
Publikováno v:
Tellus: Series A, Dynamic Meteorology and Oceanography, Vol 73, Iss 1, Pp 1-11 (2021)
Eady edge waves (EEWs) propagate on surface baroclinic zones and they resemble synoptic and sub-synoptic scale frontal wave-trains. The wave-trains are frequently depicted on surface charts, and occur per se on a front with a local baroclinicity extr
Externí odkaz:
https://doaj.org/article/5aaa7f26fb614969b3ca13eee9f05107
Autor:
Barham, William, Grooms, Ian
We derive exact analytical expressions for flow configurations that optimize the instantaneous growth rate of energy in the linear Eady problem, along with the associated growth rates. These optimal perturbations are relevant linear stability analysi
Externí odkaz:
http://arxiv.org/abs/1810.10620
Publikováno v:
Journal of Computational Physics 343:130-149 (2017)
A vertical slice model is developed for the Euler-Boussinesq equations with a constant temperature gradient in the direction normal to the slice (the Eady-Boussinesq model). The model is a solution of the full three-dimensional equations with no vari
Externí odkaz:
http://arxiv.org/abs/1611.04929
Akademický článek
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