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CIRCULATION PATTERNS OF THE SOUTHERN BAY OF BISCAY DURING A WINTER-SPRING TRANSITION PERIOD

CIRCULATION PATTERNS OF THE SOUTHERN BAY OF BISCAY DURING A WINTER-SPRING TRANSITION PERIOD. Paula Conde Pardo Instituto Español de Oceanografía. Centro Oceanográfico de A Coruña. Area. Galician - Cantabrian Shelf & Slope.

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CIRCULATION PATTERNS OF THE SOUTHERN BAY OF BISCAY DURING A WINTER-SPRING TRANSITION PERIOD

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  1. CIRCULATION PATTERNS OF THE SOUTHERN BAY OF BISCAY DURING A WINTER-SPRING TRANSITION PERIOD Paula Conde Pardo Instituto Español de Oceanografía. Centro Oceanográfico de A Coruña

  2. Area Galician - Cantabrian Shelf & Slope • Resolution aimed at ecosystem studies (1-2 km). High-resolution forcing. • Impact on ecosystems. • Operational forecasts (ESEOO project).

  3. Complex bathymetry • Water masses • Upwelling / Downwelling processes • Slope Current • Mesoscale structures

  4. ROMS (Regional Ocean Modelling System, Haidvogel et al., 2002) with nesting capability (Penven et al., 2004). • Three grids with 15Km, 5Km and 1.8Km. • 30 vertical s-layers. • OSU tidal inverse model (Egbert and Erofeeva, 2002). • Wind forcing & Heat fluxes (MM5: 30Km, 1h; HIRLAM02: 22km, 6h; NCEP 2º, 6h).

  5. IEO Local Model (ROMS) 4 2 3 1 1 1 1 1 • River run-off 2 • Slope Current 3 • Interaction Coastal – Ocean dynamics 4 • Mesoscale features

  6. ESEOO Project • Participants: • Main Objective: Operational Oceanographic System • Historical • Data Analysis: • Real Time • Physical variables • Numerical Models: • Trajectories • Regional & Local

  7. ESEOO Project Exercise Gijón • Emergency state • Operational model forecasts • Lagrangian Buoys USYP • Cruises

  8. Exercise Gijon: Cruises • On board IEO RV “José Rioja” • 28 CTD stations • Cruise I 24th – 25th May • Cruise II 28th – 29th May

  9. Cruise I: 24th-25th May Wind stress over the shelf Salinity **Hourly meteorological forecasts: - MM5 30 km during spin-up (3 months before) - NCEP & HIRLAM02 (INM) during the exercise

  10. Cruise I: Vertical Sections Temperature Salinity

  11. Cruise I: Vertical Sections Temperature Salinity

  12. Cruise I: Vertical Sections Temperature Salinity

  13. Cruise I: Vertical Sections Temperature Salinity

  14. Cruise I: CTD Profiles Intermediate Shelf Slope Outer Shelf Inner Shelf

  15. Cruise II: 28th-29th May Wind stress over the shelf Salinity

  16. Cruise II: Vertical Sections Temperature Salinity

  17. Cruise II: Vertical Sections Temperature Salinity

  18. Cruise II: Vertical Sections Temperature Salinity

  19. Cruise II: Vertical Sections Temperature Salinity

  20. Cruise II: CTD Profiles Intermediate Shelf Outer Shelf Slope Inner Shelf

  21. Wind stress over the shelf Exercise Gijon : Lagrangian Buoys

  22. Wind stress over the shelf

  23. Currents: Boya Cape Peñas

  24. Conclusions: • Effects in Dynamics • Bathymetry • Accurate Bathymatry Data in the Shelf • Upwelling / Downwelling events • Wind Forcing • Spreading / Confinement River Plumes • High Frecuency (6h, 1h) • Slope Current Strength • Shelf dynamics • Climatological Run-off. Need for daily values • River Plumes • Upwelling / Downwelling events • IPC – River run-off interaction • Climatology • OB • Water masses • Higher Resolution Bathimetry • Bathymetry

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