2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/143108The onset of small-scale fluctuations around a steady convection pattern in a rotating baroclinic annulus filled with air is investigated using Direct Numerical Simulation. In previous laboratory experiments of baroclinic waves, such fluctuations have been associated with a flow regime termed Structural Vacillation which is regarded as the first step in the transition to fully-developed geostrophic turbulence.6 pagesGeophysicsChaotic Dynamicstext