1. U.S. GODAE: Global Ocean Prediction with Community Effort: Community Effort: NRL, FSU, U. of Miami, NASA-GISS, NOAA/NCEP, NOAA/AOML, NOAA/PMEL, PSI, FNMOC, NAVOCEANO, SHOM, LEGI, OPeNDAP, UNC, Rutgers, USF, Fugro-GEOS, Orbimage, Shell, ExxonMobil

2. GODAE: The vision "A global system of observations, communications, modeling and assimilation, that will deliver regular, comprehensive information on the state of the oceans in a way that will promote and engender wide utility and availability of this resource for maximum benefit to society."

3. Objectives and Goals A broad partnership of institutions that collaborate in developing and demonstrating the performance and application of eddy- resolving, real-time global and basin-scale ocean prediction systems using HYCOM. Transition to operational use by the U.S. Navy at NAVOCEANO and by NOAA at NCEP.

4. Strong participation of the coastal ocean modeling community in using and evaluating boundary conditions from the global and basin- scale ocean modeling prediction systems Efficient data distribution (100 Terrabytes Storage Area Network) The data are available to the community at large within 24 hours via Live Access Server (LAS), ftp, and OPeNDAP at http://www.hycom.org Objectives and Goals

5. STORAGE AREA NETWORK Software Red Hat Linux Red Hat cluster suite and Global File System Apache Web Server THREDDS LAS Server Vsftpd server  100 TB Fibre Channel SAN  Three 8 CPU machines  32 GB RAM/machine

6. Currently Available Datasets Daily outputs from the real time Global HYCOM+NCODA analysis Global HYCOM+NCODA analysis (2004- present) Global non-assimilative HYCOM (2003- 2007) Near real-time 1/12  Atlantic Ocean prediction system output (June 2003 – Present) Monthly mean 1/12  Pacific Ocean simulation output (1978-2003)

7. 1/12º global real time system (NRL) - 4500 x 3298 grid points, ~6.5 km spacing on average, ~3.5 km at pole - 32 σ 2 * vertical coordinate surfaces - Monthly river runoff (986 rivers) - NOGAPS atmospheric forcing - Assimilation: NCODA 1/25º Gulf of Mexico real time system (NRL) - Running since November 2006 - Assimilation: NCODA - 5 day hindcast, 7 day forecast NOAA/NCEP Atlantic real-time system - - Orthogonal grid (1200 x 1684 points) - 25 vertical coordinates (18 isopycnal, 7 z-level) - Forcing fields from 3-hour NCEP (GDAS/GFS) model - Tides:M2, S2, N2, K1, P1, O1, K2, Q1 tidal modes - Rivers from daily USGS data and RIVDIS climatology - Data Assimilation (SSH, SST,T, S, profiles) Present nowcast/forecast systems

8. with assimilation (GLBa0.08-60.4)

9. without assimilation (GLBa0.08-05.8)

10. Overall increase in variability - largest changes occur in the western boundary currents

11. 1/12º Global HYCOM SSH and surface drifters Smedstad et al.

12. Eddy Kinetic Energy Comparison Surface EKE in the Gulf Stream 3000 cm 2 /s 2 2500 2000 1500 1000 500 NCOM - 2004 Observations from Fratantoni (2001) – Based on 1990-99 surface drifters HYCOM - 2004

13. Eddy Kinetic Energy Comparison EKE at ~700 m in the Gulf Stream Observations from Schmitz (1996) HYCOM - 2004NCOM - 2004

14. World Ocean Gulf Stream NW Arabian Sea and Gulf of Oman Equatorial Pacific Kuroshio Gulf of Mexico 1.0 0.9 0.8 0.7 1.0 0.9 0.8 0.7 0.6 Median SSH anomaly correlation 010203001020300102030 Forecast length (days) Forecast verification statistics from.08  global HYCOM 4 Forecasts included in statistics

15. Product evaluation –Assessment of the outputs by comparison to independent observations –Comparison with other GODAE products (i.e. MERSEA collaboration) –Strong involvement of coastal ocean modeling groups to use and evaluate boundary conditions provided by the global and basin HYCOM real time prediction system outputs

16. Ivan Simulation (G. Halliwell, U. of Miami) Blended NOGAPS wind field with HWIND gridded vector wind fields from NOAA/HRD

17. West Florida Shelf Modeling Barth et al. (USF ) WFS ROMS SST and surface velocity is shown inside the dashed line and outside of this area is the North Atlantic HYCOM. Warm water is detached from the Loop Current and transported northward as mesoscale eddies and filaments.

18. Regional model for South Florida seas SoFLA-HYCOM (South Florida Hybrid Coordinate Ocean Model) Nested boundaries Surface temperature and velocity Kourafalou et al. (U. of Miami)

19. Nested South Atlantic Bight Finite Element Model Blanton et al. (UNC) UNC-SAB modeling system sequence that nests the regional-scale QUODDY implementation (middle) within the 1/12° near real-time HYCOM- GODAE model (left). The limited-area QUODDY implementation (right) includes the estuary and tidal inlets along the Georgia/South Carolina coast and extends to the shelf-break.

20. US West Coast HYCOM with Biology Nested in 1/12° Global HYCOM Basin Kindle et al. (NRL)

22. Wetting and Drying in HYCOM Mont St Michel

23. Wetting and Drying in HYCOM 0 meter layerthickness Baraille et al. (SHOM)

24. In order to achieve these goals Continued community involvement to ensure that the numerical codes, data assimilation, framework, etc. are state-of- the-art and to maintain credibility Continued availability of a server for easy access to the model outputs and provision of boundary conditions Minimum dispersion of efforts among partners and users