Internal Cycle of Seminars at IMEDEA (CISI) consist on a cycle of seminar presentations given mainly by doctoral students, masters and junior postdocs, although it is not closed to other staff, such as visitors and staff, that take place every Friday from 12:00 p.m. to 12:30 p.m in the seminar room os IMEDEA.

This represents a great opportunity to learn more about the research carried out at the Institute and to bring those with less experience , the chance of increasing their presentation and public speaking skills. Afterwards, there will be coffee and some biscuits 😉 We strongly encourage you to participate. Join us!

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"The weekly seminars at IMEDEA are not only crucial for academic development but also provide the opportunity to present research"

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Internal Cycle of Seminars IMEDEA - Máximo Garcia-Jove- «CALYPSO: Vertical Velocities developed in Mesoscale and Submesoscale Structures in the Western Mediterranean Sea»

19/10/2023

Abstract

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.

Link to the video here