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2016 Colloquium : Submesoscale Processes: Mechanisms, Implications and new Frontiers


Place of the Conference: University of Liège - Place du 20-Août, 7 - 4000 Liège - Belgium

23rd - 27th May 2016

Terms of reference

A rich tapestry of oceanic processes is manifest at scales O(0.1-10 km), small enough for the constraints of the earth’s rotation and oceanic stratification to be overcome, but larger than that of three-dimensional turbulence. Rossby and Richardson numbers of O(1) lead to a range of dynamical instabilities that respond to surface forcing and boundary stresses, and interact with the mesoscale flow field, upper ocean turbulence, and near-inertial waves. These dynamics result in enhanced vertical velocities and mixing, as well as stratification, on time scales that range from a few days to the inertial period and intersect with the time scales of internal waves and tides.

Their diagnoses is facilitated through advances in high-resolution autonomous, in-situ and remotely sensed observations, modeling, and theoretical advances. Their implications are wide-ranging and include the transfer of energy across scales, lateral mixing and transport, restructuring of the upper ocean’s density and stratification, modulation of air-sea, ice-ocean, ocean-bathymetric interactions, the exchange of biogeochemical properties across the mixed layer base, vertical supply of nutrients for primary production, modulation of light exposure and growth rates for phytoplankton, subduction of surface water, and export of particulate organic carbon and oxygen from the surface mixed layer. The similarity of physical and biological time scales of phytoplankton growth heightens the relevance of submesoscale processes for the production and export of phytoplankton, and the structuring and diversity of oceanic ecosystems.

This colloquium aims to advance our collective understanding of submesoscale processes, their mechanistic functioning, relevance, and implications across a range of oceanic disciplines. Discussions will include observational, modeling and theoretical approaches for elucidating submesoscale phenomena. From this colloquium, its oral/poster presentations and scientific interactions, will emerge new cross-cutting themes for future research.

Topics that will be addressed include:

  • Dynamics of frontal and mixed-layer instabilities (forced and unforced) and their implications.
  • Impact of winds and surface forcing on the mixed layer and submesoscale instabilities.
  • Surface boundary layer turbulence and submesoscale instabilities, large-eddy simulation and observations of surface waves, Langmuir circulations. Their implications for air-sea coupling.
  • Surface signatures of submesoscale dynamics from remotely sensed surface topography, roughness, and ocean color.
  • Mesoscale-submesoscale interactions, energy cascades, impact of submesoscales on larger/smaller scales.
  • Physical-biological interactions — implications for biogeochemistry, productivity, export, ecosystem structure and diversity.
  • Freshwater in the oceans — implications of submesoscale processes for sea ice, river plumes and freshwater dispersal.
  • Coastal submesoscale dynamics — interaction with topography and the bottom boundary.
  • Wave-front/eddy interactions Interaction of internal waves and submesoscale fronts/ eddies.
  • Modelling issues related to multi-scale and multi-physics nature of the processes and in particular model nesting, unstructured grids and developments of new discretization schemes.


  • Alexander Barth, ULg, Belgium
  • Eric Deleesnijder, UCL, Belgium and TU Delft, The Netherlands
  • Amala Mahadevan, WHOI, USA
  • Ananda Pascual, IMEDEA (CSIC-UIB), Spain
  • Simon Ruiz, IMEDEA (CSIC-UIB), Spain
  • Charles Troupin, SOCIB, Spain

Scientific Committee

The scientific committee is composed by the organisers and by the following scientists:

  • Jean-Marie Beckers, ULg, Belgium
  • Jérôme Benveniste, ESA, Italy
  • Burkard Baschek, HZG, Germany
  • Paolo Callil, FURG, Brazil
  • Arthur Capet, OGS, Italy
  • Mariona Claret, McGill, Canada
  • Eric D’Asaro, U. Washington, USA
  • Baylor Fox-Kemper, Brown University, USA
  • Lee-Lueng Fu, JPL, USA
  • Johannes Karstensen, U. Kiel Geomar, Germany
  • Patrice Klein, LPO, France
  • Marina Lévy, LOCEAN/IPSL, France
  • Jen MacKinnon, UCSD, USA
  • Rosemary Morrow, LEGOS, France
  • Alberto Naveira-Garabato, NOC, UK
  • Antonio Olita, CNR, Italy
  • Jose Luis Pelegrí, ICM-CSIC, Spain
  • Sebastiaan Swart, CSIR, South Africa
  • Amit Tandon, UMass Dartmouth, USA
  • Jacques Verron, LGGE, France

Keynote speakers

  • Xavier Capet, LOCEAN, France The role of submesoscale in matter and energy transfers: recent progress and some enduring challenges
  • Lee-Lueng Fu, JPL, USA A next generation altimeter for mapping the sea surface variability: opportunities and challenges
  • Robert Hetland, TAMU, USA Instabilities in river plumes
  • Karen Heywood, UEA, UK High-definition Oceanography: Observing the submesoscale with ocean gliders
  • Marina Lévy, LOCEAN/IPSL, France Submesoscale control on marine ecosystems and diversity
  • Jim McWilliams, UCLA, USA Submesoscale Currents in the Ocean
  • Hans Bonekamp, EUMETSAT, Germany High-resolution ocean observations from Sentinel-3 and opportunities for their synergetic use
  • Leif Thomas, Stanford University, USA Energy exchange between near-inertial waves and balanced currents at ocean fronts



The preliminary program can be accessed here.

Travel grants

Travel grants are available for scientists (including master students) with original contributions to the topics covered by the colloquium. Early career scientists such as PhD students and early post-docs as well as scientists from low-income countries are particularly encouraged to apply. No later than the 24th January 2016, interested scientists should,

  • submit an abstract on which they are first author online and
  • provide their CV by filling the form, except for US-scientists who use the following form.

The scientific committee will base their decision on the following criteria:

  • scientific originality of abstract
  • fitness to the scientific programme
  • originality of previous work (this criterion may not be applicable for very early career stage scientists)

The travel grants can cover the cost of travel (economy class airline or train tickets), accommodation and the registration fee. The sponsorship from ESA, CNES, IOC, SOCIB, IUGG, EUMETSAT and SCOR will allow the reimbursement of actual costs upon presentation of original receipts (with a ceiling depending on the number of applications and the country of origin), after the colloquium. US-scientists can get a travel grant of 2000 $ (thanks to special funding from NASA and ONR).

All applicants will be notified of the outcome of the selection by email at the end of February 2016. If their application is not selected, the abstract can be withdrawn within one week of the receipt of the outcome of the travel grant selection. In this case, an email should be sent to with the title of the abstract to be withdrawn.


Special Issue

A special issue will be published in Ocean Dynamics with contributions from the authors participating in this colloquium.

Contributions from first author of an oral or poster presentation during the colloquium are welcome.

Send your manuscript directly on the Ocean Dynamics web site :

The full manuscript is due by 30th September 2016.



You can register to the 48th Liege Colloquium by filling the form below.

Registration form

If you have difficulties with the registration form, please e-mail this information to


Registration fee

Unfortunately we have reached the capacity of the Crown Plaza Hotel. We can only accommodate participants who have already paid the registration fee or those how have confirmed their participations to the dinner before the 12th May 1pm. We are sorry that we might not be able to welcome all participants.

The registration rate is therefore reduced by 55 € and is now 275 € unless you have confirmed your participation to the dinner. In this case the registration fee is 330 €

If you did not yet paid the registration fee or if you did not express you interest to participate to the colloquium dinner before 12th May 1pm, you can fill the waiting list for the dinner before the 18th May. We will do our best to accommodate your request in case of an cancellation. In this case, the extra 55€ for the dinner case be paid by cash on site (receipt will be issued of course).

Payements can be made by:

  1. BANK Transfer  (see details below)
  2. Visa/Mastercard/American Express/Paypal  (Paypal account is not necessary in some countries to go through paypal paiement, see options)
  3. Registration fee without dinner (275 €)

    Optional message to organizers

    Full registration fee (330 €, if your participation to the dinner was confirmed before 12th May, 1 PM)

    Optional message to organizers
  4. Cash money.

Once paid, the registration fee can not be reimbursed

Bank transfer

Receiver: Modelenvironment asbl

Aida Alvera

account number : BE52 001419363109


Bank name: BNP Paribas - FORTIS BANQUE

Bank address: rue du Sart Tilman, 373
4031 Angleur

Do not forget to:

  • mention the name of the participant in the bank transfer communication ("firstname & lastname of the participant / Colloquium 2016").
  • pay extra costs (bank charges)



You can get here the announcement poster.


Abstract submission

The deadline for abstract submissions has passed. However, late submissions might still be accepted as a poster.

To submit an abstract, please use our online submission system.

If you have some questions, please contact

If you want your abstract to be considered in one of the thematic sessions, please specify the name of the session during the submission.

If you have problems with the online submission system, you can send your abstract by e-mail to, using one of the templates below to format it.

The abstract must fit on one page and be in English.

In total we received 270 abstract submissions from 41 different countries (map).


  • 24th January 2016: submission of travel support request.
  • 8th February 2016 (extended deadline): submission of abstracts  (late contributions may still be considered as a poster).
  • 26th February 2016: decision of the Scientific organizing committee of accepted abstracts.
  • 11th March 2016: the preliminary program will be made available.
  • 30th June 2016: send preliminary title and authors for manuscripts of the special issue to
  • 30th September 2016: submission deadline for manuscripts for publication in the special issue.


Colloquium Dinner

The Colloquium dinner will held at the "Crowne Plaza Hotel"

Wednesday evening at 19:30

Mont Saint Martin 9-11

4000 Liège



Jacques Nihoul Poster Award

We are pleased to announce the "Jacques Nihoul Poster Award" to master studends, PhD students and post-docs presenting a poster at the Liège colloquium.

Students and post-docs who wish to participate have to mention in the upper left corner of their poster "Poster Contest".

The selection will be made by the members of the scientific committee based on quality of the overall presentation and the scientific content.