Golfe de Gascogne
Bay of Biscay
Our team is conducting several research projects in the Bay of Biscay, addressing the following issues:
- tides: barotropic tides, internal tides and tides in the Seine estuary
- regional circulation: slope current, mesoscale and submesoscale activity in the deep plain, circulation over the shelf, influence of river runoffs on the shelf and in the deep regions, surface ocean response to extreme atmospheric event
- observability of the surface circulation from satellite altimetry
- nearshore processes in the Landes beaches
- estimation of model’s uncertainties and data assimilation
These issues are addressed using numerical modeling and both in situ and satellite data. We are working in close collaboration with colleagues from Laboratoire d’Aérologie within the POC group (Pôle Océan Couplages, Observatoire Midi-Pyrénées) and are running and developing some numerical tools. Several studies rely on altimetric data distributed by CTOH. Bay of Biscay is a region that is also used as a test case for method and tools developments.
Our team has contributed to the French project EPIGRAM, that gathered scientists from several French institutes (e.g. LEGOS, LA, LPO, SHOM, IFREMER, MERCATOR-Océan, …) as well as AZTI-Tecnalia from Spain. EPIGRAM has been supported by LEFE/INSU and ANR over the period 2009-2013. To read more about EPIGRAM, click here.
The team is also collaborating with MERCATOR-Ocean within the MyOcean project on the IBI/NEMO model and on the setup of a data assimilation scheme based on Ensemble Optimal Interpolation (EnOI).
Data assimilation and downscaling issues are also addressed in the AMICO1a project, supported by the Ministère de l'Ecologie, du Développement Durable et de l'Energie.
- D. Allain, R. Almar, N. Ayoub, F. Birol, P. De Mey, M. Ghantous (post-doc), F. Lyard, Y. Morel, C. Nguyen, F. Toublanc (post-doc)
- Former students and post-doc: J. Lamouroux, M. Le Hénaff, G. Herbert, R. Dussurget, C. Maraldi, G. Dencausse, C. de Nicola, G. Quattrocchi, Y. Soufflet, V. Vervatis, D. Angnuureng.
- Colleagues from POC/Laboratoire d'Aérologie: T. Duhaut, P. Marsaleix
Dussurget, R., Birol, F., Morrow, R. and De Mey, P. (2011). Fine Resolution Altimetry Data For A Regional Application In The Bay Of Biscay. Marine Geodesy 34(3-4): 447-476.
Herbert, G., Ayoub, N., Marsaleix, P. and Lyard, F. (2011). Signature Of The Coastal Circulation Variability In Altimetric Data In The Southern Bay Of Biscay During Winter And Fall 2004. Journal of Marine Systems 88(2): 139-158.
Kourafalou V., P. De Mey, J. Staneva, N. Ayoub, A. Barth, Y. Chao, M. Cirano, J. Fiechter, M. Herzfeld, A. Kurapov, AM Moore, P. Oddo, J. Pullen, A. Van Der Westhuysen, R. Weisberg, 2014: Coastal Ocean Forecasting: science foundation and user benefits, Journal of Operational Oceanography, in press.
Le Henaff, M., De Mey, P. and Marsaleix, P. (2009). Assessment Of Observational Networks With The Representer Matrix Spectra Method-Application To A 3d Coastal Model Of The Bay Of Biscay. Ocean Dynamics 59(1): 3-20.
Le Henaff, M., Roblou, L. and Bouffard, J. (2011). Characterizing The Navidad Current Interannual Variability Using Coastal Altimetry. Ocean Dynamics 61(4): 425-437.
Maraldi, C., Chanut, J., Levier, B., Ayoub, N., De Mey, P., Reffray, G., Lyard, F., Cailleau, S., Drevillon, M., Fanjul, E. A., Sotillo, M. G., Marsaleix, P. and Team, T. M. (2013). Nemo On The Shelf: Assessment Of The Iberia-Biscay-Ireland Configuration. Ocean Science 9(4): 745-771.
Pairaud, I. L., Auclair, F., Marsaleix, P., Lyard, F. and Pichon, A. (2010). Dynamics Of The Semi-Diurnal And Quarter-Diurnal Internal Tides In The Bay Of Biscay. Part 2: Baroclinic Tides. Continental Shelf Research 30(3-4): 253-269.
Quattrocchi, G., P. De Mey, C-E. Testut, N. Ayoub, G. Reffray, J. Chanut, Y. Drillet and V. Vervatis,
2014: Characterization of errors of a regional model of the Bay of Biscay in response to wind uncertainties: a first setp toward a data assimilation system suitable for coastal sea domains. Journal of Operational Oceanography, Vol. 7, 25-34.
Vervatis V., C-E Testut, P. De Mey, N. Ayoub, J. Chanut, G. Quattrocchi, 2016. Data assimilative twin experiment in a high-resolution Bay of Biscay configuration : 4DEnOI based on stochastic modeling of the wind forcing, Ocean Modelling, 100, pp 1-19, doi: 10.1016/j.ocemod.2016.01.003.