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Researcher at Inria Grenoble / LJK


Laboratoire Jean Kuntzmann
office 185 (1st floor)
Bâtiment IMAG
700 Avenue Centrale
38400 Saint Martin d'Hères

E-mail : florian.lemarie [at] inria.fr
Phone : +33 (0)4 57 42 17 57


Professional experience

  • since jan. 2013 : Inria researcher, AIRSEA Team and member of the Laboratoire Jean Kuntmann
  • 2009-2012 : Post-doctoral position, department of atmospheric and oceanic sciences, University of California at Los Angeles
  • Educational background

  • 2005-2008 : Ph.D thesis, in Applied mathematics, Joseph Fourier university, Grenoble, France.
  • 2003-2004 : Master of science in Mathematics and Statistics, University of Montreal, Canada
  • 1999-2004 : Engineering degree in Applied Mathematics and Computer Sciences from the INSA (National Institute of Applied Sciences), Rouen, France
  • Research

    Promoting Scientific Activities

  • Associate Editor at the Journal of Advances in Modeling the Earth System (JAMES)
  • Co-organization of the international COMMODORE workshop on numerical methods for oceanic models (Paris, Sept. 17-19, 2018)
  • Topics

  • Time-stepping algorithms for the split-explicit, free-surface, primitive equations models
  • Optimized Global-in-time Schwarz methods (a.k.a. Schwarz Waveform Relaxation)
  • Ocean-Atmosphere coupling methods
  • Advection-diffusion schemes for ocean models
  • Mesh refinement methods for structured grids
  • Mesoscale air-sea interactions over oceanic fronts
  • Main ongoing projects

  • H2020 IMMERSE [Inria P.I.] (2019-2023)
  • ANR COCOA [co P.I.] (2016-2020)
  • CMEMS ALBATROS [P.I.] (2016-2019)
  • PPR SIMBAD [P.I.] (2015-2018)
  • ANR HEAT (2014-2018)
  • Master's students

  • Pierre Jolivet (MSIAM, 2011) [now research scientist at CNRS]
  • Pierre Marchand (ENPC, 2015) [now PhD student at UPMC]
  • Gino Rivano (University of Valparaiso, 2017)
  • Sophie Thery (MSIAM, 2017)
  • Natalie Noun (M2R Lyon 1, 2018)
  • Agnes Printemps (MSIAM, 2019)
  • Simon Clément (MSIAM, 2019)
  • Graduate engineers

  • Mustafa Inanoglu (IM2AG, 2015)
  • Roland Patoum (ENSTA Bretagne, 2017-2018)
  • PhD students

  • Charles Pelletier
  • Co-advisor Eric Blayo (UGA), defended on Feb. 15, 2018
    title : Mathematical study of ocean-atmosphere coupling including turbulent scales
  • Rémi Pellerej
  • Co-advisor Arthur Vidard (Inria AIRSEA), defended on Mar. 26, 2018
    title : Design of variational data assimilation algorithms suitable for coupled ocean-atmosphere models
  • Sophie Théry
  • Co-advisor Eric Blayo (UGA), since Oct. 2017
    title : Numerical study of coupling algorithms and boundary layer parameterizations in climate models


  • Farshid Nazari (webpage) since Nov. 2017
  • Publications

  • PhD Thesis
  • F. Lemarié, Algorithmes de Schwarz et couplage océan-atmosphère, Université Joseph-Fourier - Grenoble I (2008-11-17)

  • Numerical Modelling
  • J. Demange, L. Debreu, P. Marchesiello, F. Lemarié, E. Blayo, C. Eldred : Stability analysis of split-explicit free surface ocean models: implication of the depth-independent barotropic mode approximation, J. Comp. Phys., submitted, 2019

    F. Lemarié, H. Burchard, L. Debreu, K. Klingbeil, J. Sainte-Marie : Advancing dynamical cores of oceanic models across all scales (Meeting Summary), Bull. Amer. Meteor. Soc., 2018 [hal-inria]

    K. Klingbeil, F. Lemarié, L. Debreu, H. Burchard : The numerics of hydrostatic structured-grid coastal ocean models: state of the art and future perspectives , Ocean Modelling, doi:10.1016/j.ocemod.2018.01.007, 2018 [hal-inria]

    Y. Soufflet, P. Marchesiello, F. Lemarié, J. Jouanno, X. Capet, L. Debreu, R. Benshila : On effective resolution in ocean models. Ocean Modelling, 98, pp 36-50, 2016 [hal-inria]

    F. Lemarié, L. Debreu, G. Madec, J. Demange, J.-M. Molines, M. Honnorat : Stability constraints for oceanic numerical models: implications for the formulation of time and space discretizations. Ocean Modelling, 92, pp 124-148, 2015 [hal-inria]

    J. Demange, L. Debreu, F. Lemarié, P. Marchesiello, E. Blayo : Numerical representation of internal waves propagation. [Research Report RR-8590], INRIA Grenoble, pp 1-21, 2014 [hal-inria]

    F. Lemarié, L. Debreu, A. Shchepetkin, J.C. McWilliams : On the Stability and Accuracy of the harmonic and biharmonic isoneutral mixing operators in ocean models. Ocean Modelling, 52-53, pp 9-35, 2012 [hal-inria]

    F. Lemarié, J. Kurian, A. Shchepetkin, J. Molemaker, F. Colas, J.C. McWilliams : Are there inescapable issues prohibiting the use of terrain-following coordinates in climate models ? Ocean Modelling, 42, pp 57-79, 2012 [hal-inria]

    F. Lemarié, M. Honnorat : The coupled multi-scale downscaling climate system : A decision-making tool for developing countries, IEEE Oceans, pp.1-9, doi: 10.1109/OCEANS.2010.5664389, 2010 [hal-inria]

    Marchesiello, P., J. Lefevre, P. Penven, F. Lemarié, L. Debreu, P. Douillet, A. Vega, P. Derex, V. Echevin, B. Dewitte : Keys to affordable regional marine forecast systems. Mercator Ocean Quaterly Newsletter, 30, pp. 38-48, July 2010

  • Multi-physics coupling
  • L. Renault, F. Lemarié, T. Arsouze: On the implementation and consequences of the oceanic currents feedback in ocean-atmosphere coupled models, Ocean Modelling, submitted, 2019

    M. Gross, H. Wan, P. J. Rasch, P. M. Caldwell, D. L. Williamson, D. Klocke, C. Jablonowski, D. R. Thatcher, N. Wood, M. Cullen, B. Beare, M. Willett, F. Lemarié, E. Blayo, S. Malardel, P. Termonia, A. Gassmann, P. H. Lauritzen, H. Johansen, C. M. Zarzycki, K. Sakaguchi, and R. Leung : Recent progress and review of Physics Dynamics Coupling in geophysical models, Mon. Wea. Rev., doi: 10.1175/MWR-D-17-0345.1, 2018 [hal-inria]

    C. Pelletier, F. Lemarié, E. Blayo: Sensitivity analysis and metamodels for the bulk parameterization of turbulent air-sea fluxes, Q. J. Roy. Met. Soc., doi:10.1002/qj.3233, 2018 [hal-inria]

    V. Oerder, F. Colas, V. Echevin, S. Masson, F. Lemarié: Impacts of the mesoscale ocean-atmosphere coupling on the Peru-Chile ocean dynamics : the current-induced wind stress modulation, JGR-Oceans, doi:10.1002/2017JC013294, 2018 [hal-inria]

    R. Buizza, S. Brönnimann, L. Haimberger, P. Laloyaux, M. J. Martin, F. Lemarié, A. Vidard, et al.: The EU-FP7 ERA-CLIM2 project contribution to advancing science and production of Earth-system climate reanalyses, Bull. Am. Meteorol. Soc., doi:10.1175/BAMS-D-17-0199.1, 2017 [hal-inria]

    A. Beljaars, E. Dutra, G. Balsamo, F. Lemarié : On the numerical stability of surface-atmosphere coupling in weather and climate models, Geosci. model dev., doi:10.5194/gmd-2016-96, 2017 [hal-inria]

    R. Pellerej, P. A. Vidard, F. Lemarié : Toward variational data assimilation for coupled models: first experiments on a diffusion problem, CARI 2016, Tunis, Tunisia [hal]

    L. Renault, J. Molemaker, J. McWilliams, A. Shchepetkin, F. Lemarié, D. Chelton, S. Iig, A. Hall : Modulation of wind-work by oceanic current interaction with the atmosphere, J. Phys. Oceanogr., doi: 10.1175/JPO-D-15-0232.1, 2016 [hal-inria]

    V. Oerder, F. Colas, V. Echevin, S. Masson, C. Hourdin, S. Jullien, F. Lemarié, G. Madec : Mesoscale SST-Wind Stress coupling in the Peru-Chile Current System: which mechanisms drive its seasonal variability ? Climate Dynamics, doi: 10.1007/s00382-015-2965-7, 2016 [hal-inria]

    F. Lemarié, E. Blayo, L. Debreu : Analysis of Ocean-atmosphere Coupling Algorithms: Consistency and Stability. Procedia Computer Science, 51, pp. 2066–2075, 2015 [hal-inria]

    F. Lemarié : Numerical modification of atmospheric models to include the feedback of oceanic currents on air-sea fluxes in ocean-atmosphere coupled models. [Technical Report RT-0464], Inria Grenoble, pp. 1-10, 2015 [hal-inria]

    F. Lemarié, P. Marchesiello, L. Debreu, E. Blayo : Sensitivity of Ocean-Atmosphere Coupled Models to the Coupling Method : Example of Tropical Cyclone Erica. [Research Report RR-8651], Inria Grenoble, pp 1-31, 2014

    F. Lemarié, L. Debreu, E. Blayo : Toward an optimized global-in-time Schwarz algorithm for diffusion equations with discontinuous and spatially variable coefficients. Part 1 : the constant coefficients case. Elec. Trans. Num. Anal., 40, pp. 148-169, 2013 [hal-inria]

    F. Lemarié, L. Debreu, E. Blayo : Toward an optimized global-in-time Schwarz algorithm for diffusion equations with discontinuous and spatially variable coefficients. Part 2 : the variable coefficients case. Elec. Trans. Num. Anal., 40, pp. 170-186, 2013 [hal-inria]

    F. Lemarié, L. Debreu, E. Blayo : Optimal control of the convergence rate of Global-in-time Schwarz algorithms, In: R. Bank et al. (eds), Domain Decomposition in Science and Engineering XX, Lecture Notes in Computational Science and Engineering 91, doi 10.1007/978-3-642-35275-1_71, Springer-Verlag, pp. 599–606, 2013 [hal-inria]

  • Mesh Refinement
  • J. Jouanno, J. Sheinbaum, B. Barnier, J.-M. Molines, L. Debreu, F. Lemarié : The mesoscale variability in the Caribbean Sea. Part I: simulations and characteristics with an embedded model. Ocean Modelling, 2008 [hal-inria]

    Conferences (2013-2019)

    F. Lemarié, G. Samson, X. Couvelard, G. Madec, R. Bourdallé-Badie : Recent developments in NEMO within the Albatross project, Drakkar meeting, Grenoble, France, 2019.

    F. Lemarié : PPR SIMBAD: en quête d’une nouvelle méthodologie de représentation des échanges air-mer dans les modèles opérationnels globaux d’océan à haute-résolution, Colloque de Bilan et de Prospective du programme LEFE, Clermont-Ferrand, France, 2018.

    F. Auclair, R. Benshila, L. Debreu, N. Ducousso, F. Dumas, F. Lemarié : Some Recent Developments around the CROCO Initiative for Complex Regional to Coastal Modeling, Workshop on Coastal Ocean Modelling, Hamburg, Germany, Feb 2018

    F. Lemarié, L. Debreu, J. Demange, P. Marchesiello, E. Blayo : Stability analysis of split-explicit ocean models, Mathematics of Weather, Erquy, France, Oct 2017

    F. Lemarié, J.L. Redelsperger, X. Couvelard, R. Patoum : Toward an improved representation of air-sea interactions in high-resolution global oceanic forecasting systems, Copernicus Marine week, Brussels, Belgium, Sept 2017

    F. Lemarié, J.L. Redelsperger, X. Couvelard, R. Patoum : High-resolution ocean, waves, atmosphere interaction: Modelling of the atmospheric boundary layer, Global Monitoring and Forecasting Centre meeting, Toulouse, France, June 2017

    F. Lemarié, C. Pelletier, E. Blayo : A theoretical study of a simplified air-sea coupling problem including turbulent parameterizations, VII International Conference on Coupled Problems in Science and Engineering, Rhodes, Greece, June 2017

    F. Lemarié : Time-stepping of the CROCO hydrostatic code and its impact on code structure (and on advection schemes), 1st CROCO User Meeting, Toulouse, France, May 2017

    F. Lemarié : Analysis of Ocean-atmosphere Coupling Algorithms: Consistency and Stability, Workshop "Energy transfers in Atmosphere and Ocean", Hamburg, Germany, May 2017

    F. Lemarié, G. Samson, J.L. Redelsperger, H. Giordani, G. Madec : Toward an improved representation of air-sea interactions in high-resolution global ocean forecasting systems, European Geosciences Union General Assembly, Vienna, Austria, Apr 2017.

    F. Lemarié, H. Burchard, K. Klingbeil, L. Debreu : Multi-process test cases to perform comparative analysis of oceanic models, AGU General Assembly, San Francisco, USA, Dec 2016.

    F. Lemarié, L. Debreu : A compact high-order coupled time and space discretization to represent vertical transport in oceanic models, Joint Numerical Sea Modelling Group Conference, Oslo, Norway, May 2016.

    R. Pellerej, A. Vidard, F. Lemarié : Toward variational data assimilation for coupled models: first experiments on a diffusion problem, 5th International Symposium on Data Assimilation (ISDA), Reading, United Kingdom, Jul. 2016

    F. Lemarié, L. Debreu : Feasibility of a high-order semi-implicit vertical advection scheme in oceanic models, AGU Ocean Sciences Meeting, New Orleans, USA, Feb 2016.

    F. Lemarié : Improving vertical advection in ocean modeling, Partial Differential Equations on the Sphere workshop, Seoul, South Korea, Oct 2015.

    F. Lemarié : Numerical and physical delicacies in coupled ocean-atmosphere simulations, Physics dynamics coupling in geophysical models - bridging the gap, Ensenada, Mexico, Dec 2014.

    L. Debreu, F. Lemarié and E. Blayo : Schwarz waveform relaxation for heterogeneous cluster computing and applications, 43th SPEEDUP Workshop on High-Performance Computing, Geneva, Switzerland, Sept. 2014.

    F. Lemarié : Difficultés et Progrès dans le couplage océan-atmosphère du point de vue numérique, Journée thématique LEFE-MANU ”Couplage océan-atmosphère”, Paris, France, Apr. 2014.

    L. Debreu, F. Lemarié, P. Marchesiello : Numerical delicacies associated with the use of isoneutral mixing operators in ocean models, Partial Differential Equations on the Sphere workshop, Boulder, USA, Apr. 2014

    F. Lemarié, E. Audusse : Méthodes numériques pour la modélisation de l'océan et de l'atmosphère, 42ème Congrès National d'Analyse Numérique (Mini-Symposium), Carry-le-Rouet, France, Apr. 2014

    F. Lemarié, L. Debreu, G. Madec, M. Honnorat, J.M. Molines : Stability constraints for oceanic numerical models: implications for the formulation of space-time discretizations, AGU Ocean Sciences Meeting, Honolulu, HI, 24-28 Feb. 2014.

    F. Lemarié : Méthodes mathématiques et numériques en océanographie et météorologie, Séminaire de Mécanique d'Orsay, Orsay, France, Jan. 2014.

    F. Lemarié : Delicacies and progress in ocean-atmosphere coupling, LEFE Prospective meeting on environmental fluid mechanics, Toulouse, France, Jan. 2014.

    F. Lemarié, A. Rousseau : Domain Decomposition Methods for Environmental Modeling, 22nd International Conference on Domain Decomposition Methods (Mini-Symposium), Lugano, Switzerland, Sept. 2013.

    F. Lemarié : Mathematical and numerical delicacies in coupled ocean-atmosphere simulations, SIAM Conference on Mathematical & Computational Issues in the Geosciences, Padova, Italia, June 2013.

    F. Lemarié : Isoneutral Mixing Operators In Oceanic Models : Numerical Delicacies, European Geosciences Union General Assembly 2013, Vienna, Austria, Apr. 2013.