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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. - PowerPoint PPT Presentation
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CIRCULATION PATTERNS OF THE SOUTHERN BAY OF BISCAY DURING A WINTER-SPRING
TRANSITION PERIOD
Paula Conde PardoInstituto Español de Oceanografía. Centro Oceanográfico de A Coruña
Area Galician - Cantabrian Shelf & Slope
Resolution aimed at ecosystem studies (1-2 km). High-resolution forcing.
Impact on ecosystems.
Operational forecasts (ESEOO project).
Complex bathymetry• Water masses
• Upwelling / Downwelling processes
• Mesoscale structures
• Slope Current
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).
River run-off
Slope Current
Interaction Coastal – Ocean dynamics Mesoscale features
23
4
1
11 1 1
2 34
IEO Local Model (ROMS)
ESEOO Project
• Participants:
• Main Objective:
Data Analysis:
Operational Oceanographic System
Numerical Models:
Historical
Real Time
Physical variables Trajectories Regional & Local
Exercise Gijón
ESEOO Project
• Emergency state
• Operational model
forecasts
• Cruises
• Lagrangian Buoys
USYP
Exercise Gijon: Cruises
On board IEO RV “José Rioja”
28 CTD stations
Cruise I 24th – 25th May
Cruise II 28th – 29th May
Cruise I: 24th-25th May
** Hourly meteorological forecasts: - MM5 30 km during spin-up (3 months before) - NCEP & HIRLAM02 (INM) during the exercise
Wind stress over the shelf
Salinity
Cruise I: Vertical Sections
SalinityTemperature
Cruise I: Vertical Sections
SalinityTemperature
Cruise I: Vertical Sections
SalinityTemperature
Cruise I: Vertical Sections
SalinityTemperature
Cruise I: CTD Profiles
SlopeOuter ShelfIntermediate ShelfInner Shelf
Cruise II: 28th-29th MayWind stress over the shelf
Salinity
Cruise II: Vertical SectionsSalinityTemperature
Cruise II: Vertical SectionsSalinityTemperature
Cruise II: Vertical SectionsSalinityTemperature
Cruise II: Vertical SectionsSalinityTemperature
Cruise II: CTD Profiles
SlopeOuter Shelf
Intermediate Shelf
Inner Shelf
Exercise Gijon : Lagrangian BuoysWind stress over the shelf
Wind stress over the shelf
Currents: Boya Cape Peñas
Conclusions:
Bathymetry
Wind Forcing
River Plumes
Water masses
Accurate Bathymatry Data in the Shelf
Spreading / Confinement River Plumes
High Frecuency (6h, 1h)
Climatological Run-off. Need for daily values
Effects in Dynamics
Slope Current Strength
Upwelling / Downwelling events
Shelf dynamics
Upwelling / Downwelling events IPC – River run-off interaction
OB Bathymetry
Climatology Higher Resolution Bathimetry