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Researcher at INRIA Rhône-Alpes


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


  • 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
  • Ongoing projects

  • IDEX-Cross Disciplinary Program TRAJECTORIES (2017-2021)
  • ANR COCOA [co P.I.] (2016-2020)
  • CMEMS ALBATROS [P.I.] (2016-2019)
  • PPR SIMBAD [P.I.] (2015-2018)
  • ANR HEAT (2014-2018)
  • ANR COMODO (2012-2016)
  • 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)
  • Graduate engineers

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

  • Rémi Pellerej
  • Advisor Arthur Vidard (INRIA AIRSEA), since sept. 2014
    title : Data assimilation for coupled ocean-atmosphere models
  • Charles Pelletier
  • Advisor Eric Blayo (UJF), since dec. 2014
    title : Mathematical and numerical study of coupling issues in climate models"


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

  • Numerical Modelling
  • H. Burchard, L. Debreu, K. Klingbeil, F. Lemarié : The numerics of hydrostatic structured-grid coastal ocean models: state of the art and future perspectives , Ocean Modelling, submitted, 2016

    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

    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

    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

    J. Demange, L. Debreu, P. Marchesiello, F. Lemarié, E. Blayo : On the use of a depth-dependent barotropic mode in ocean models: impact on the stability of the coupled barotropic/baroclinic system. [Research Report RR-8589], INRIA Grenoble, pp 1-27, 2014

    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

    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

    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

    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
  • 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

    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, ArXiv e-prints, May 2016

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

    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

    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

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

    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

    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

    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

  • 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

    Conferences (2013-2017)

    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.

    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.