Vertical Velocities developed in Mesoscale and Submesoscale Structures in the Western Mediterranean Sea

El seminario será virtual en Zoom: Vertical velocities associated with surface mesoscale eddies and submesoscale fronts and filaments generate important vertical fluxes of carbon and other biogeochemical tracers from the surface layer to depths below the mixed layer. Vertical velocities are very weak (about a thousand times smaller than horizontal velocities) and characterized by small scales which make them difficult to properly monitor. The project entitled Coherent Lagrangian Pathways from the Surface Ocean to Interior (CALYPSO, Office of Naval Research initiative) addresses the challenge of observing, understanding, and predicting the vertical velocities and three-dimensional pathways on subduction processes in the Alboran and Balearic seas. We combine multi-platform in-situ observations with high-resolution numerical simulations both in free-run and data-assimilative modes. The simulations are shown to realistically reproduce the main characteristics of the Alboran and Balearic fronts and some of the associated submesoscale patterns, providing an appropriate tool to analyze the processes responsible for vertical velocity development. In spring 2018 the analysis of CALYPSO Alboran Sea experiment showed that I) the western front vertical velocities were intensified by frontogenesis, instabilities, and Ekman effects and II) the eastern front intensification was governed by filamentogenesis associated with a cold filament. The results in winter 2022 of the CALYPSO Balearic Sea experiment showed strong mesoscale and submesoscale fields where structures interact and exchange energy, also affected by changes in the wind forcing. LIGA SEMINARIO: https://zoom.us/j/92564847491?pwd=KhgZUty1gedDDLLUqhlxsfdon87aXc.1 Meeting ID: 925 6484 7491 Passcode: 748950

Lugar: https://zoom.us/j/92564847491?pwd=KhgZUty1gedDDLLUqhlxsfdon87aXc.1

Fecha: 31-01-2025

Hora: 11:30 am