Senior Scientist
Research, Earth System Assimilation, Data Assimilation Methodology
Summary:
Marcin works on algorithmic aspects of the ocean ensemble variational data assimilation system NEMOVAR. He set up and hosts a collaboration platform allowing for maintaining collaborations with other key NEMOVAR developers at Cerfacs (France), INRIA (France) and at the UK MetOffice. Marcin also contributes to the development and maintenance of the Object Oriented Prediction System, which shall become ECMWF operational data assimilation system in the near future.
Professional interests:
- Data assimilation methodology
- Numerical methods
- High performance computing
Career background:
Marcin obtained his PhD in computational fluid mechanics from the University of Strasbourg in 2012. After defending his dissertation he took a post-doctoral position at the University of Ottawa and subsequently at the Ecole Polytechnique de Montreal. Before joining ECMWF in 2015 he worked as a research associate at Bombardier Aerospace in the Advanced Aerodynamics department in Montreal. Marcin's background is in numerical methods, applied mathematics and high performance computing.
External recognitions
- Member of GOV DA-TT (2017 - )
- 2025
- Eric de Boisseson, Hao Zuo, Magdalena Balmaseda, Philip Browne, Marcin Chrust, Stephanie Johnson, Sarah Keeley, Michael Mayer, Kristian Mogensen, Charle Pelletier, Christopher Roberts, Patricia de Rosnay, Toshinari Takakura (March 2025) ECMWF 6th generation ocean and sea-ice reanalysis system (ORAS6). DOI: 10.5194/egusphere-egu25-8348
- Eric de Boisseson, Hao Zuo, Marcin Chrust, Philip Browne, Magdalena Balmaseda, Patricia de Rosnay (January 2025) ECMWF 6th generation ocean and sea-ice reanalysis system (ORAS6). DOI: 10.5194/egusphere-egu24-10659
- Marcin Chrust, Anthony T. Weaver, Philip Browne, Hao Zuo, Magdalena Alonso Balmaseda (January 2025) Impact of ensemble‐based hybrid background‐error covariances in ECMWF's next‐generation ocean reanalysis system, Quarterly Journal of the Royal Meteorological Society. DOI: 10.1002/qj.4914
- Hao Zuo, Kristian Mogensen, Eric de Boisseson, Magdalena Alonso Balmaseda, Philip Browne, Marcin Chrust, Stephanie Johnson, Sarah Keeley, Christopher Roberts (March 2025) Effects of Argo floats data on the ECMWF Ocean DA system and coupled forecasts . DOI: 10.5194/egusphere-egu25-11966
- Marcin Chrust, Alban Farchi, Massimo Bonavita, Marc Bocquet, Patrick Laloyaux (March 2025) Development of an offline and online hybrid model for the Integrated Forecasting System. DOI: 10.5194/egusphere-egu25-11988
- Alban Farchi, Marcin Chrust, Marc Bocquet, Massimo Bonavita (April 2025) Development of an offline and online hybrid model for the Integrated Forecasting System, Quarterly Journal of the Royal Meteorological Society. DOI: 10.1002/qj.4934
- Jozef Skákala, David Ford, Keith Haines, Amos Lawless, Matthew J. Martin, Philip Browne, Marcin Chrust, Stefano Ciavatta, Alison Fowler, Daniel Lea, Matthew Palmer, Andrea Rochner, Jennifer Waters, Hao Zuo, Deep S. Banerjee, Mike Bell, Davi M. Carneiro, Yumeng Chen, Susan Kay, Dale Partridge, Martin Price, Richard Renshaw, Georgy Shapiro, James While (August 2025) Marine data assimilation in the UK: the past, the present, and the vision for the future, Ocean Science. DOI: 10.5194/os-21-1709-2025
- 2024
- Farchi A., Chrust M., Bocquet M., Bonavita M. (February 2024) Online model error correction with neural networks: Application to the Integrated Forecasting System, arXiv. DOI: 10.48550/arXiv.2403.03702
- Jozef Skakala, David Ford, Keith Haines, Amos Lawless, Matthew Martin, Philip Browne, Marcin Chrust, Stefano Ciavatta, Alison Fowler, Daniel Lea, Matthew Palmer, Andrea Rochner, Jennifer Waters, Hao Zuo, Mike Bell, Davi Carneiro, Yumeng Chen, Susan Kay, Dale Partridge, Martin Price, Richard Renshaw, Georgy Shapiro, James While (June 2024) Marine data assimilation in the UK: the past, the present and the vision for the future. DOI: 10.5194/egusphere-2024-1737
- 2023
- Farchi A., Chrust M., Bocquet M., Laloyaux P., Bonavita M. (February 2023) Online Model Error Correction With Neural Networks in the Incremental 4D-Var Framework, Journal of Advances in Modeling Earth Systems. DOI: 10.1029/2022MS003474
- Bonavita M., Schneider R., Arcucci R., Chantry M., Chrust M., Geer A., Le Saux B., Vitolo C. (February 2023) 2022 ECMWF-ESA workshop report: current status, progress and opportunities in machine learning for Earth System observation and prediction, npj Climate and Atmospheric Science. DOI: 10.1038/s41612-023-00387-2
- 2022
- Farchi A., Chrust M., Bocquet M., Laloyaux P., Bonavita M. (February 2022) ONLINE MODEL ERROR CORRECTION WITH NEURAL NETWORKS IN THE INCREMENTAL 4D-VAR FRAMEWORK, arXiv. DOI: 10.48550/arXiv.2210.13817
- de Rosnay P., Browne P., de Boisséson E., Fairbairn D., Hirahara Y., Ochi K., Schepers D., Weston P., Zuo H., Alonso-Balmaseda M., Balsamo G., Bonavita M., Borman N., Brown A., Chrust M., Dahoui M., Chiara G., English S., Geer A., Healy S., Hersbach H., Laloyaux P., Magnusson L., Massart S., McNally A., Pappenberger F., Rabier F. (February 2022) Coupled data assimilation at ECMWF: current status, challenges and future developments, Quarterly Journal of the Royal Meteorological Society. DOI: 10.1002/qj.4330
- Lea D.J., While J., Martin M.J., Weaver A., Storto A., Chrust M. (February 2022) A new global ocean ensemble system at the Met Office: Assessing the impact of hybrid data assimilation and inflation settings, Quarterly Journal of the Royal Meteorological Society. DOI: 10.1002/qj.4292
- 2021
- Dušek J., Zhou W., Chrust M. (February 2021) Solid-Fluid Interaction in Path Instabilities of Sedimenting Flat Objects, Lecture Notes in Mechanical Engineering. DOI: 10.1007/978-981-33-4960-5_9
- Weaver A.T., Chrust M., Ménétrier B., Piacentini A. (February 2021) An evaluation of methods for normalizing diffusion-based covariance operators in variational data assimilation, Quarterly Journal of the Royal Meteorological Society. DOI: 10.1002/qj.3918
- 2020
- Laloyaux P., Bonavita M., Chrust M., Gürol S. (February 2020) Exploring the potential and limitations of weak-constraint 4D-Var, Quarterly Journal of the Royal Meteorological Society. DOI: 10.1002/qj.3891
- 2018
- Weaver A.T., Gürol S., Tshimanga J., Chrust M., Piacentini A. (February 2018) “Time”-Parallel diffusion-based correlation operators, Quarterly Journal of the Royal Meteorological Society. DOI: 10.1002/qj.3302
- 2017
- Zhou W., Chrust M., Dušek J. (February 2017) Path instabilities of oblate spheroids, Journal of Fluid Mechanics. DOI: 10.1017/jfm.2017.718
- 2016
- Dušek J., Chrust M., Bouchet G. (February 2016) Transitional dynamics of freely falling discs, Notes on Numerical Fluid Mechanics and Multidisciplinary Design. DOI: 10.1007/978-3-319-27386-0_7
- 2015
- Chrust M., Laurendeau E., Ostiguy L. (February 2015) Accelerating low-fidelity aerodynamic codes on multi- and many-core architectures, Journal of Supercomputing. DOI: 10.1007/s11227-015-1444-6
- 2014
- Chrust M., Bouchet G., Dušek J. (February 2014) Effect of solid body degrees of freedom on the path instabilities of freely falling or rising flat cylinders, Journal of Fluids and Structures. DOI: 10.1016/j.jfluidstructs.2013.09.016
- 2013
- Chrust M., Bouchet G., Dûek J. (February 2013) Numerical simulation of the dynamics of freely falling discs, Physics of Fluids. DOI: 10.1063/1.4799179
- Chrust M., Goujon-Durand S., Wesfreid J.E. (February 2013) Loss of a fixed plane of symmetry in the wake of a sphere, Journal of Fluids and Structures. DOI: 10.1016/j.jfluidstructs.2012.11.008
- 2012
- Szaltys P., Chrust M., Przadka A., Goujon-Durand S., Tuckerman L.S., Wesfreid J.E. (February 2012) Nonlinear evolution of instabilities behind spheres and disks, Journal of Fluids and Structures. DOI: 10.1016/j.jfluidstructs.2011.10.004
- 2011
- Szaltys P., Chrust M., Przadka A., Goujon-Durand S., Tuckerman L.S., Wesfreid J.E. (February 2011) Nonlinear evolution of instabilities behind spheres and disks, Journal of Fluids and Structures. DOI: 10.1016/j.jfluidstructs.2011.04.005
- Chrust M., Bouchet G., Dušek J. (February 2011) Domain decomposition with a spherical subdomain. A spectral azimuthal decomposition applied to a non axisymmetric geometry, IUTAM Symposium on Bluff Body Flows, Blubof 2011.
- 2010
- Chrust M., Bouchet G., Duek J. (February 2010) Parametric study of the transition in the wake of oblate spheroids and flat cylinders, Journal of Fluid Mechanics. DOI: 10.1017/S0022112010004878