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Multiscale vortex structure in the regime of incipient hurricanes

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The presentation will first summarize the asymptotics of Päschke et al. (2012) of strongly tilted vortices in gradient wind balance in the inviscid case and related more recent numerical corroboration by Dörffel et al. (2021). The second part will cover a very recent triple-deck boundary layer analysis which reveals how friction/diffusion in a near-surface layer and moist and diabatic processes in an intermediate layer affect the dynamics of the developing storms.

Päschke E., Marschalik P., Owinoh A.Z., Klein R., Motion and structure of atmospheric mesoscale baroclinic vortices: dry air and weak environmental shear, J. Fluid Mech., vol. 701, 137—170, (2012)

Dörffel T., Papke A., Klein R., Ernst N., Smolarkiewicz P.K., Dynamics of tilted atmospheric vortices under asymmetric diabatic heating, Theor. & Comput. Fluid Dyn., vol. 35, 831—873, (2021)

This talk is part of the Geophysical and Environmental Processes series.

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