The overall objective is to review the scientific and technical progresses achieved with the DRAKKAR hierarchy of model configurations based on the NEMO platform, identify strengths and weaknesses of these models, and discuss key model improvements and new developments that are needed for the future.

 

The workshop is open to contributed talks from participants, but high priority is given to discussions. Speakers are encouraged to present their most recent results or ongoing research. Candid presentations of "things that do not work" in the numerical simulations are welcomed, because they foster interesting discussions and contribute to the progress of the modelling community.

 

Foci of the 2017 Workshop

 

Benefits of high resolution to the science made with ocean/sea-ice models. The objective is to highlight the benefits that the continuous resolution increase in ocean GCMs is bringing to the following issues:

• Scientific understanding of key ocean processes (e.g. dynamics of boundary currents and overflows, eddy compensation in the Southern Ocean, chaotic ocean variability, eddy-mean flow interactions and feedbacks, ...)
•  Insights into sub-mesoscale processes (from very high resolution regional models)
• Ability to simulate climate change and seasonal forecasting (with coupled A/O ocean models)
• Ability of modelling the ocean biogeochemistry
• Development of parameterisations relevant for lower resolution models

 

OGCM evolution for basin-scale to global eddying simulations.

Future evolution of ocean/sea-ice models and of simulation practices. This could include:

• Numerical, parameterisation, resolution, and HPC issues in global and regional eddying configurations (not exclusively based on NEMO/LIM3/PISCES).
• Improvement of the represented ocean physics (surface waves, global tides, ...),
• Simulation approaches allowing to account for model/forcing uncertainties (e.g. ensemble simulations, stochastic parameterisations, ...).

Ocean-wave model coupling (will be scheduled on Wednesday afternoon). This could include

• Where does it stand and what is it good for?
• What are the major resisting flaws and how to deal with them?
• Impact of wave processes on the ocean.
  

Atmospheric driving of eddying OGCMs. Presentations should be related to the following issues:

• Ways to account for the atmospheric feedbacks (e.g. the Bulk Formula forcing, coupling with AMBL, Full coupling with AGCM, ...)
• Available atmospheric data sets (e.g. DFSxx vs JRA-55xx, top of the AMBL variables) relevant for the high resolution.
• Freshwater forcing and runoffs (e.g. salinity restoring, ice-shelves, icebergs, river runoff, ...)
• Discriminating between the causes of model drifts (forcing data, forcing method, internal model parameterisations, ...)

 

The eddy-permitting regime (e.g. ORCA025). Presentations and discussions should attempt to bring answers to the following questions:

• Where does it stand and what is it good for?
• What are the major resisting flaws and how to deal with them?
• Which ways of improvements?

1 - Abstract submission (deadline 15 December 2016). Closed

2 - Content of Presentations. The talks at the Drakkar workshop are not meant to be of the same type as EGU or AGU. For this reason we recommend that your contributions emphazise the scientific content of your studies as well as model development issues, with the aim to contribute to the open discussions on improving the quality of ocean models and global ocean model configurations.