High resolution modelling in a semi-closed bay

PREVENT is a multi-lab and multi-disicplinary projects, conducted at the Toulon university , the MIO being one partner.

  • The main goal of PREVENT for our contribution is to better understand the dynamics of the Toulon bay, in order to better simulate the contaminant transport in the area.
  • To conduct this task, a very high resolution model has been set at 100 m in horizontal resolution, using the MIT GCM. This particular task is associated to C. Mazoyer's PhD.
  • The image below is an output of the MIT GCM configured for the Toulon Bay with a horizontal resolution of 100m. It shows the complexity of the flow dynamics for the area, (surface velocity in m/s, daily averaged for the 14th January 2014)
  • In order to validate the model output , different set of observations are and will be used. Repeated campaigns with lagrangian drifters showing the surface circulation patterns have already confirmed the complexity of the local circulation, as shown below with the trajectory of 5 drifters released in the bay (date : 20/03/17)
  • Recent papers on (sub-)mesoscales

    • Declerck A., Ourmieres Y. and Molcard A. Assessment of the coastal dynamics in a nested zoom and feedback on the boundary current: the North-Western Mediterranean case, 2016. Ocean Dynamics, 66 (11), 1529-1542.
    • Barrier N, Ourmieres Y. and Petrenko A, 2016. Intrusions of the Northern Mediterranean Current on the eastern Gulf of Lion: insights from in-situ observations and high resolution numerical modelling. Ocean Dynamics, 66 (3), p 313-327.