4th COMMODORE Workshop on Advancing Ocean Modeling: Bridging Theory, Computation, Scales, and Applications

Administration

Description

The call for application is now closed.

The workshop focuses on numerical techniques for ocean models from coastal to large scales, sharing experience on model development, consistent coupling between numerics and parameterisations, as well as perspectives on dynamical core formulations.

The Community for the Numerical Modeling of the Global, Regional, and Coastal Ocean (COMMODORE) initiative brings together ocean model developers from different communities in bianual workshops. Models have now reached such a high level of complexity that model development goes beyond the expertise of one group and requires interactions between physicists, mathematicians, and computer scientists. Contributions to the consistent coupling of hydrodynamics with other Earth system components are highly welcome to foster a more systematic communication between numerical modelers from different research disciplines. A special focus of the 4th COMMODORE workshop will be the involvement of scientific communities from developing countries discussing demands and challenges for model development for applications such as climate adaptations, extreme events, fishery management and local policies. There is no registration fee.

Topics:

Topics cover all aspects of advances in numerical ocean models and dynamical core development, for example:

formulations for the dynamical equations
numerical methods (discretization, time stepping, ...)
community test cases and diagnostics for comparative model evaluation
consistent coupling between resolved dynamics and parameterized subgrid-scale physics
uncertainty quantification

Local Organisers:

D. Bruciaferri, Met Office, UK
M. Chouksey, IOW, Germany
R. Farneti, ICTP, Italy
K. Klingbeil, IOW, Germany
F. Lemarié, Inria, France

Talk/Poster Presentation

Participants who have uploaded an abstract will be contacted individually at a later stage to inform them whether they will be assigned a talk or a poster presentation.

Grants: A limited number of grants are available to support the attendance of selected participants, with priority given to participants from developing countries. There is no registration fee.

Material

Booklets List of participants Poster Slides Social Dinner - How to get there group photo

4th COMMODORE Workshop on Advancing Ocean Modeling: Bridging Theory, Computation, Scales, and Applications | (smr 4237)

Go to day

Monday, 21 September 2026

08:30 - 09:00 Registration Formalities

REGISTRATION: Upon arrival, Visitors not staying in the ICTP Guest Houses, are kindly requested to complete registration formalities in the lobby. The Registration Desk will be open in the morning starting from 08:30.

09:00 - 19:00

09:00 Welcome talk 30'

09:30 Why are we still making the Boussinesq approximation in ocean models? 30'

Speaker:	Robert Hallberg (NOAA Geophysical Fluid Dynamics Laboratory, USA)
Material:	Slides

10:00 Quantifying spurious Boussinesq contribution to cross equatorial transport 30'

Speaker: Jean-Michel Campin (Massachusetts Institute of Technology (MIT) EAPS department, USA)
10:30 Group Photo 10'
10:40 Coffee Break 20'

11:00 On the Haline Contribution to Conservative Temperature and Its Implications 30'

Speaker:	Rémi Tailleux (University of Reading Department of Meteorology, USA)
Material:	Slides

11:30 Thermodynamic consistency of down-gradient turbulent closure 30'

Speaker:	Thomas Dubos (Ecole Polytechnique Département de Mécanique Laboratoire de Météorologie Dynamique, France)
Material:	Slides

12:00 Parameterizing isopycnal mixing via kinetic energy backscatter 30'

Speaker:	Matthew Pudig (Center for Atmosphere Ocean Science Courant Institute of Mathematical Sciences, USA)
Material:	Slides

12:30 Lunch Break 2h0'

14:30 Investigating mesoscale eddy impacts in the coupled climate system 30'

Speaker:	Stephan Juricke
Material:	Slides

15:00 MESACLIP Project: Representation of Eddy Compensation in Ocean Models 30'

Speaker:	Gokhan Danabasoglu (NSF National Center For Atmospheric Research, USA)
Material:	Slides

15:30 Toward a global 1/50 degree model configuration 30'
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Remote
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Speaker: Eric Chassignet (Center for Ocean-Atmospheric Prediction Studies (COAPS) Florida State University, USA)
16:00 Coffee Break 30'
16:30 Optimizing the MOM6 Ocean Model for the North Atlantic 30'
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Remote
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Speaker: Alan Wallcraft (COAPS at FSU, USA)

17:00 Social Ecological Resilience to Oceanic Resources 30'

Speaker:	Islam Md. Shafiqul (International University of Business Agriculture and Technology Department of Environmental Science, Bangladesh)
Material:	Slides

17:30 Discussion session #1 30'

'Perspectives from the Global South on the development and use of ocean models and modelling tools'

Moderators: I. Shafiqul, R. Lamma, P. Busumprah

Material:

Slides

18:00 Poster session 1h0'

Clément Billy — Sea-ice embedment in NEMO using Brinkman Volume Penalisation
Diego Bruciaferri (o/b/o C. Guivarc’h) — Improved Antarctic Shelf Water Mass Representation in a Global Ocean-Sea Ice Model
Peter Teye Busumprah — Enhancing the African Ocean Biodiversity Atlas through Advanced Ocean Modeling: Bridging Theory, Computation, and Ecosystem Applications
Gabrielle Ching-Johnson — Coupling a Nested NEMO Ocean to the UK Atmosphere: Development and Atmospheric Impacts
Patrick de Bruijn — Coastal-trapped waves along the western European shelf
Rut Lamma — Strengthening BMKG Capacity in Ocean-Atmosphere Interaction for Drought and Rainfall Forecasting in Eastern Indonesia
Kai Logemann — Global biogeochemical modelling with ICON-O/FABM/Ecosmo E2E using locally refined computational meshes
Martin Losch — Parameterising eddy-driven transport of Circumpolar Deep Water across Antarctic continental slopes
Muhammad Mubashar Shahzad — Approximate Solutions of Time-Fractional Swift Hohenberg Equation Using Quintic Hyperbolic B-Spline Functions
Kacper Nowak — GPU Implementation of Implicit Filter for Ocean Spectra
Patrick Scholz — Diagnosing Numerical Mixing in the Global Finite-volume Sea-Ice Ocean Model (FESOM2) Using Discrete Variance Decay
Simone Silvestri — A low-storage Runge-Kutta framework for nonlinear free-surface ocean models
Junchuan Sun — Downscaled climate projections for the Arabian Sea

19:30 - 21:30

19:30 Welcome Reception 2h0'

All participants are cordially invited to the Welcome Reception

Tuesday, 22 September 2026

09:00 - 18:30

09:00 A linearly exact filter for the leapfrog time integration scheme 30'

Speaker:	Paul Dellar (Mathematical Institute University of Oxford, UK)
Material:	Slides

09:30 A WENO finite-volume scheme for the evolution of PV in isopycnal models 30'

Speaker: Wenda Zhang (Laoshan Laboratory, China)

10:00 WENO reconstruction of Lie derivatives 30'

Speaker:	Guillaume Roullet (Université de Bretagne Occidentale Institut Universitaire Européen de la Mer Laboratoire d'Océanographie Physique et Spatiale, France)
Material:	Slides

10:30 Coffee Break 30'

11:00 Brinkman Volume Penalization for Ice-Shelf-Ocean Interactions 30'

Speaker:	Antoine Nasser (Princeton University Atmospheric and Oceanic Sciences, USA)
Material:	Slides

11:30 Homogenization of permeability for upscaling topography in ocean models 30'

Speaker:	Nicholas Kevlahan (McMaster University, Department of Mathematics and Statistics, Canada)
Material:	Slides

12:00 Evaluation of deep-learning architectures for satellite-derived bathymetry 30'

Speaker:

Amine Bouhadî (Faculty of Science and Technology of Tangier (FST Tangier) Department of Earth Sciences, Abdelmalek Essaâdi University, Morocco)

12:30 Lunch Break 2h0'
14:30 Inferring nonlinear balance in geophysical flows with neural networks 30'

Speaker: Manita Chouksey (Leibniz Institute for Baltic Sea Research Warnemünde, Germany)

15:00 Improving baroclinic instability using CNN in ocean models 30'

Speaker:	Fabricio Lapolli (Max Planck Institute for Meteorology, Germany)
Material:	Slides

15:30 A Deep-Learning-Assisted Parameterization of Internal-Tide-Driven Mixing 30'

Speaker: Yang Wang (Laoshan Laboratory, China)
16:00 Coffee Break 30'
16:30 Where do oceanic internal waves come from? 30'

Speaker: Giovanni Dematteis (University of Torino, Department of Physics, Italy)

17:00 ML in Ocean Models: From Stable Param. to Conservative Emulators 30'

Speaker:	Alistair Adcroft (Princeton University, USA)
Material:	Slides

17:30 Discussion session #2 30'

Machine Learning in ocean modelling: where do we stand?

Moderators: A. Adcroft, M. Chouksey, G. Danabasoglu

Material:

Slides

18:00 Discussion session #3 30'

The future of ocean model development : new practices, tools and challenges

Moderators: B. Hallberg, S. Silvestri, D. Bruciaferri

Material:

Slides

Wednesday, 23 September 2026

09:00 - 19:00

09:00 A variational approach to define the ALE movement in ocean models 30'

Speaker:	Alexandris-Galanopoulos Andreas (Laboratory of Ship and Marine Hydrodynamics School of Naval Architecture and Marine Engineering National Technical University of Athens, Greece)
Material:	Slides

09:30 Extending z-tilde in NEMO: Towards a Stable and Efficient Vertical ALE Coordinate 30'

Speaker:	Thomas Gantz (Sorbonne University IPSL-LOCEAN (UMR 7159) NEMO R&D Team, France)
Material:	Slides

10:00 Accurate calculation of pressure forces on cells defined by steeply sloping coordinates 30'

Speaker:	Mike Bell (Hadley Centre Met Office, UK)
Material:	Slides

10:30 Coffee Break 30'

11:00 Entropy Stable Barotropic-Baroclinic Split- ting for Multilayer Shallow Water Models 30'

Speaker:	Sophie Hörnschemeyer (Institute for Geometry and Practical Mathematics, Germany)
Material:	Slides

11:30 Direct numerical simulations of surface wave- induced forces 30'

Speaker: Carsten Eden (Institut für Meereskunde Universität Hamburg, Germany)

12:00 Advancing Storm Surge Model. in Southern Java Coast through Wave-Current Coupling 30'

Speaker:	Khafid Pratama (Indonesia Agency for Meteorology Climatology and Geophysics Meteorology, Indonesia)
Material:	Slides

12:30 Lunch Break 2h0'

14:30 Chaotic Stirring in Tidally Dominated Shallow Seas: A Study of the Helgoland Trap 30'

Speaker:

Vera Sidorenko (Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research Coastal Ecology / Climate Dynamics Sections, Germany)

15:00 Towards physically-based treatment of river inputs in MOM6 30'

Speaker:	Gustavo Marques (National Center for Atmospheric Research, USA)
Material:	Slides

15:30 Assessment of a Stochastic Large-Scale Hydro- static Primitive Equations Model 30'

Speaker:	Francesco Tucciarone (INRIA, France)
Material:	Slides

16:00 Coffee Break 30'

16:30 The parameterization paradox: when do oceanic small scales matter for climate? 30'

Speaker:	Noel Gutierrez Brizuela (Max Planck Institute for Meteorology Department of Climate Dynamics, Germany)
Material:	Slides

17:00 Discussion session #4 30'

Material: Slides

17:30 Discussion session #5 30'

Have kinetic energy backscatter and numerical methods made traditional mesoscale parameterizations obsolete for eddy-permitting models?

Moderators: S. Griffies, S. Juricke, G. Marques

18:00 Open session 1h0'

The new ocean forcing datasets based on ERA5 and the new forcing protocol 
(G. Danabasoglu)

Material:

Slides

Thursday, 24 September 2026

09:00 - 18:30

09:00 Separating Eddies and Waves at the Grid- Scale with a Split-Form Viscosity Scheme (Remote) 30'

Speaker:	Darren Engwirda (Commonwealth Scientific & Industrial Research Organisation (CSIRO), Australia)
Material:	Slides

09:30 Adjoint-constrained mesoscale eddy param. over the Antarctic continental slope 30'

Speaker: Hugo Lévy (Alfred-Wegener-Institut "Climate Dynamics" section, Germany)

10:00 Thickness-weighted averaged eddy—mean decomposition of available potential energy 30'

Speaker:	Benedict Hatton (Laboratoire de Météorologie Dynamique École polytechnique, France)
Material:	Slides

10:30 Coffee Break 30'

11:00 Understanding the Resolved and Parameterised Ocean Energy Cycle 30'

Speaker:	Lèna Dammermann (GEOMAR Helmholtz Centre for Ocean Research Kiel, Germany)
Material:	Slides

11:30 Implicit sequential filtering 30'

Speaker:	Sergey Danilov (Alfred Wegener Institute, Germany)
Material:	Slides

12:00 The Role of Numerical Mixing in AMOC Simulations 30'

Speaker:	Dmitry Sidorenko (Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Germany)
Material:	Slides

12:30 Lunch Break 2h0'

14:30 A diffusive Beddington-DeAngelis Predator- Prey Model with fear effect 30'

Speaker:	Aung Myint (Associate Professor, Department of Mathematics University of Mandalay, Myanmar)
Material:	Slides

15:00 Scalable Multi-GPU Ocean Modeling with JAX Native Sharding 30'

Speaker: Silvano Rosenau (Institut für Meereskunde Universität Hamburg, Germany)
15:30 Discussion session #6 30'
16:30 Excursion and Social Dinner 2h0'
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Social Dinner - How to get there 
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