Quantifying transport ability of hindcast and forecast ocean models
- 1ICMAT, Consejo Superior de Investigaciones Científicas, Madrid, Spain
- 2Collège Sciences et Technologies pour l'Energie et l'Environnement, Université de Pau et des Pays de l'Adour, Pau, France
- 3Department of Applied Mathematics, École Nationale Superieure des Techniques Avancées, Palaiseau, France
In the last years, there has been much interest in uncertainty quantification involving trajectories in ocean data sets. As more and more oceanic data become available the assessing quality of ocean models to address transport problems like oil spills, chemical or plastic transportation becomes of vital importance. In our work we are using two types of ocean models: the hindcast and the forecast in a specific domain in the North Atlantic, where drifter trajectory data were available. The hindcast approach requires running ocean (or atmospheric) models for a past period the duration of which is usually for several decades. On the other hand forecast approach is to predict future stages. Both ocean products are provided by CMEMS. Hindcast data includes extra observational data that was time-delayed and therefore to the original forecast run. This means that in principle, hindcast data are more accurate than archived forecast data. In this work, we focus on the comparison of the transport capacity between hindcast and forecast products in the Gulf stream and the Atlantic Ocean, based on the dynamical structures of the dynamical systems describing the underlying transport problem, in the spirit of [1]. In this work, we go a step forwards, by quantifying the transport performance of each model against observed drifters using tools developed in [2].
Acknowledgments
MA acknowledges support from the grant CEX2019-000904-S and IJC2019-040168-I funded by: MCIN/AEI/ 10.13039/501100011033, AMM and GGS acknowledge support from CSIC PIE grant Ref. 202250E001.
References
[1] C. Mendoza, A. M. Mancho, and S. Wiggins, Lagrangian descriptors and the assessment of the predictive capacity of oceanic data sets, Nonlin. Processes Geophys., 21, 677–689, 2014, doi:10.5194/npg-21-677-2014
[2] G.García-Sánchez, A.M.Mancho, and S.Wiggins, A bridge between invariant dynamical structures and uncertainty quantification, Commun Nonlinear Sci Numer Simulat 104, 106016, 2022, doi:10.1016/j.cnsns.2021.106016
How to cite: Agaoglou, M., García-Sánchez, G., Marcano Larrinaga, A., Mouttapa, G., and Mancho, A. M.: Quantifying transport ability of hindcast and forecast ocean models , EGU General Assembly 2022, Vienna, Austria, 23–27 May 2022, EGU22-8583, https://doi.org/10.5194/egusphere-egu22-8583, 2022.
