Zoi Kourkouraidou

Abteilung Klimavariabilität IMPRS
Gruppe Energetik des Klimas
Position Doktorand*in
Telefon +49 40 41173
Email zoi.kourkouraidou@mpimet.mpg.de
Raum B 222

Research Topic

Scattering and refraction of low-mode internal tides by interaction with mesoscale eddies

Internal tides are internal gravity waves in the ocean generated when tides flow over rough underwater topography. They carry a large part of the energy of the internal wavefield, which can be available for diapycnal mixing. In particular the scattering of internal tides from low to high modes by interactions with mesoscale eddies is thought to be one of the processes causing energy dissipation and diapycnal mixing in the open ocean. The higher modes have smaller horizontal structures and higher velocity shear, which makes them prone to breaking, which in turn causes diapycnal mixing.

Studies using idealized models or sparse ship-based observational data indicate the existence of higher internal tide modes inside eddies caused by scattering. However, to our knowlegde, no such study exists using a three-dimensional state-of-the-art global circulation model, leaving a gap on a more realistic and global understanding of such interactions. One of the reasons is the lack of high horizontal resolution models in the last decades, which is crucially needed in order to resolve the high internal tide modes.

I am using the high-frequency output of the uncoupled global circulation model ICON-O at a horizontal resolution of 5km to investigate these interactions.


Supervision: Prof. Dr. Jin-Song von Storch, Dr. Manita Chouksey
(project is part of CRC181 "Energy transfers in atmosphere and ocean" and funded by the DFG)


  • 2022-2025    PhD Candidate
    Max-Planck-Institute for Meteorology & University of Hamburg
    Focus: Ocean energetics, high-resolution modelling, diapycnal mixing
    Thesis: Scattering and refraction of low-mode internal tides by interactions with mesoscale eddies
  • 2018-2021   Master of Science, Physics
    Technische Universität Berlin, Freie Universität Berlin    
    Focus: Theoretical physics, Solid-state, Quantum mechanics
    Thesis: Luttinger approach to thermal conductivity in mesoscopic conductors
  • 2013-2018    Bachelor of Science, Physics
    Technische Universität Berlin
    Focus: Theoretical and Experimental physics

Conferences and publications

SCRIPPS SIO - CASPO seminar, California USA (March 2024) - Seminar talk
"Impact of a mesoscale eddy on the M2 internal tide in 5km ICON-O"
part of a research visit at SCRIPPS, Multiscale Ocean Dynamics (MOD) Lab

Ocean Sciences Meeting 2024, New Orleans USA (February 2024) - Poster
"Weakening and refraction of the M2 low-mode internal tide by a mesoscale eddy in 5km ICON-O"
session: Internal waves and their interactions with (sub)mesoscale circulation and seafloor topography

EGU General Assembly 2023, Vienna Austria (April 2023) - Poster  
"Interactions of low-mode internal tides with mesoscale eddies in the Walvis Ridge region"
session: Eddies, waves, and instabilities: observing, modelling, and parameterizing oceanic energy transfers

Eddy-Wave Meeting 2023, Hamburg Germany (February 2023) - Poster
"Effects of mesoscale eddies on the M2 low-mode internal tide in high-resolution ICON-O"
on-site poster session

ICYMARE 2022, Bremerhaven Germany (September 2022) - Talk
"Scattering and Refraction of Low-Mode Internal Tides by Interaction with Mesoscale Eddies"
session: Of Whirls and Waves: Exploring the Impacts of Small-Scale Motions in the Ocean


Z.Kourkouraidou and J.S.von Storch.  --in preparation--