VERTIMAR-2005

1. Ocean circulation modelling at regional scales within the ESEOO Project frameworkSotillo M.G., Alvaréz E., Vizoso G., Ferrer I., Torres López S., Carracedo P. and Ruiz-Villareal M. VERTIMAR-2005 MeteoGalicia

2. Introduction • ESEOO Project. Its objectives • Numerical Modelling at ESEOO Project • Regional ESEOO Domains • Systems and preliminary results • Conclusions and future perspectives VERTIMAR-2005. Vigo, Spain, 13-16 July 2005

3. What is ESEOO? • ESEOO (Establecimiento Español de un Sistema de Oceanografía Operacional) is a 3-yr Project funded by Ministerio de Educacion y ciencia. • Funds: 865.000 € • Project launched in January 2004 • Participants: 14 Spanish and 5 non-Spanish groups Numerical Modelling at ESEOO Proyect • Prestige crisis highlighted the existence of gaps in some aspects of the Spanish Operational Oceanography (OO): • Neither currents nor oil spill operational forecasting systems • Main objective: Generation of a Spanish Operational System to provide environmental information to face emergency situations at sea • Fill observed gaps and boost OO in Spain VERTIMAR-2005. Vigo, Spain, 13-16 July 2005

4. Global Systems Regional ESEOO Applications Atmospheric forcing River Fresh water inputs IC: Global Systems Numerical Model OUTPUTS: Currents, SSH, temp & salinity Local ESEOO models BC: Global Systems Pollutant and ESEOO oil spill models Tidal forcing Numerical Modelling at ESEOO • ESEOO is focus mainly on coastal areas. • Downscaling approach (from global to coastal) • ESEOO is focus mainly on coastal areas. • Downscaling approach (from global to coastal) • Structure of a regional application: VERTIMAR-2005. Vigo, Spain, 13-16 July 2005

5. ESEOMED ESEOAT ESEOCAN ESEOO DOMAINS & APPLICATONS ESEOMED: IMEDEA,PE ESEOAT: PE,MeteoGalicia, IEO ESEOCAN: PE,ULPGC VERTIMAR-2005. Vigo, Spain, 13-16 July 2005

6. PE Applications • PE will set up applications for the 3 ESEOO domains • 3D baroclinic coastal-ocean model: POLCOMS (POL, UK) • Forcings: • Meteorological (10-m w, mslp, 2m-T,q,surf rad, cloud) => INM • Tidal => LEGOS/POC • Ocean (T,S, ssh, barotropic velocities) => FOAM / MERCATOR • Fresh river inputs => GRDC • ESEOAT 1-year Hindcast Run Prestige Year (09/02-09/03) • Horizontal resolution: 1/20º (4-5 km) / 34 S-levels / Hourly outputs • A preliminary 1-year test run already performed • Ongoing Validation / Set-up improvements / Sensitivity Tests VERTIMAR-2005. Vigo, Spain, 13-16 July 2005

7. Surface currents (19/09/02) SAL(PSU) 08/03/03 SST(ºC) 09/09/02 PE Applications • Tidal, MSLP and 10-m wind forcing effects checked • T,S, and currents under validation (in-situ/satellite) VERTIMAR-2005. Vigo, Spain, 13-16 July 2005

8. MeteoGalicia ESEOAT Application • MeteoGalicia set up an application for the ESEOATdomain. • 3D baroclinic hydrodynamic model: MOHID (IST-MARETEC) • Forcings: • Wind forcing (10-m w) => INM and ARPS • Heat Fluxes => INM and MM5 • Tidal => FES95 • Ocean (T,S, ssh, barotropic velocities) => Climatologic condition / MERCATOR • ESEOAT Application • Horizontal resolution: 1/20º (4-5 km) / 33 cartesians levels • A preliminary 2-month test run already performed • Ongoing thermohaline distribution and currents validation. • Further works: • Model intercomparison exercise in the ESEOAT domain: MetoGalicia MOHID & PE POLCOMS Systems. VERTIMAR-2005. Vigo, Spain, 13-16 July 2005

9. TIDAL VALIDATION Tidal level average errors are less than 0.07 m and RMS are around 0.10 m Differences in M2 amplitude < 2% and in phase lags <7’ MeteoGalicia ESEOAT Application MOHID RUNS (CLIMATOLOGIC & WIND FORCING) VERTIMAR-2005. Vigo, Spain, 13-16 July 2005

10. IEO Application • IEO will set up an application for the ESEOOAT domain • 3D baroclinic coastal-ocean model: ROMS & ROMS-AGRIF • Forcings: • Meteorological (10-m w, mslp, 2m-T,q,surf rad, cloud) => NCEP/Quickscat & INM • Tidal => TPXO6.2 • Ocean (T,S, ssh, barotropic velocities) => WOA2001/MERCATOR • Fresh river inputs => Real & Climatological • ESEOAT Application • A subdomain of ESEOAT already ran: • 39N 45.5 N; -13W -6 W; 1/20º (4-5 km); 30 S-levels • Sep2002 - Dec2002 • Whole ESEOAT reanalysis to be run at CESGA VERTIMAR-2005. Vigo, Spain, 13-16 July 2005

11. Validation and model intercomparison strategy for the reanalysis period IEO Application VERTIMAR-2005. Vigo, Spain, 13-16 July 2005

12. Surface salinity Surface currents and temperature IMEDEA Applications Regional models Two model-based applications implemented in the ESEOMED domain (5 km resolution) nested to MFSTEP Forecasting system and global DieCAST HOPS resolution 5km DieCAST resolution 1/24º (approx. 4km) VERTIMAR-2005. Vigo, Spain, 13-16 July 2005

13. IMEDEA Applications Nesting techniques with different global and regional models:Regional HOPS nested with Global MFSTEP (one-way nesting)Regional HOPS nested with Global DieCAST (one-way nesting)Regional DieCAST nested with Global DieCAST (two-way nesting)Local HOPS nested with Regional HOPS (two-way nesting) Data Assimilation:CTD profiles assimilated into HOPS (method used is optimal interpolation)SST assimilated into HOPSCTD profiles assimilated into DieCAST Operational Exercise: Mediterraneo-2005 Current data from DieCAST run forced with MFSTEP VERTIMAR-2005. Vigo, Spain, 13-16 July 2005

14. Conclusions & Future Actions • ESEOO Project is an initiative to boost Operational Oceanography in Spain. • Developement of ocean dynamic operational forecast systems to provide valuable information to face emergency situations at sea (i.e. oil spill accidents, drifting object tracking,...). • Spanish institutions and research groups such as PE, IMEDEA, Meteogalicia, IEO and ULPGC are co-operating to fulfill the above-referred objective. • Different applications in a pre-operational state have been already set-up allowing to: • Generate a f 1-year hindcast for the “Prestige” year • Provide useful information for the Mediterraneo-2005 exercise • Provide forcing data to other ESEOO groups working with oil spill models • However, there is still a lot of work to be done VERTIMAR-2005. Vigo, Spain, 13-16 July 2005