1. Cape Cod to Cape Hatteras: ~1000 km Coastline Results from the Mid Atlantic High Frequency Radar Network Hugh Roarty, Ethan Handel, Erick Rivera, Josh Kohut, Scott Glenn Wendell Brown, Chris Jakubiak Larry Atkinson, Teresa Garner

2. 2000 2006 2006 2009 2003 2003 2001 2003 2003 2003 2001 2007 2001 LONG RANGE NETWORK

3. C:\Documents and Settings\hroarty\My Documents\COOL\01 CODAR\MARCOOS\Renewal

4. Nested Standard Range Network

5. CEDAR ISLAND 2005 2009

6. BLOCK ISLAND 2007 2009

7. Radial Coverage Total Coverage

8. Radial Coverage Total Coverage

10. Every Other Vector Shown for Plotting Purposes DEC 2008 to NOV 2009 Temporal Coverage Greater than 50% Required for Plotting

11. Individual Site Data Data Aggregator Forecast Product Generation Product Aggregator Decision Tool MARCOOS Regional Theme 1: Maritime Safety, Search And Rescue MARCOOS Totals HF Radar Radials ROMS (Rutgers) STPS, (UConn) HOPS (SMAST) NYHOPS (Stevens) EDS NOAA National Network SAROPS Year 1 & 2 Year 3 MARCOOS Distribution: OPeNDAP/ THREDDS Data Format: NetCDF

12. Validation of Optimal Interpolation Totals Feb 24- April 4, 2007 39 days

13. ADCP ADCP OI UWLS

14. Drifter Drifter OI UWLS

15. HF Radar and HYbrid Coordinate Ocean Model or (HYCOM) Currents in SAROPS High Confidence (HF Radar) –sigma (1 std dev) = 0.22 knots –Tau (half life) = 264 minutes Low Confidence (HYCOM) –sigma (1 std dev) = 0.37 knots –Tau (half life) = 264 minutes Number of particles = 5000 SLDMB 39029 DateTime 22 July 2009 0000 Z 00 23 July 2009 0000 Z 24 24 July 2009 0000 Z 48 25 July 2009 0000 Z 72 26 July 2009 0000 Z 96

16. 24 Hours Into Search HYCOM Low Confidence HF Radar High Confidence

17. 48 Hours Into Search HYCOM Low Confidence HF Radar High Confidence

18. Search Area After 96 Hours HYCOM 36,000 km 2 10,500 nmi 2 HF Radar 12,000 km 2 3,500 nmi 2 232 km 154 km 123 km 100 km

19. Winter Spring DEC ’08 – FEB ‘09 MARCH ’09 – MAY ‘09

20. Summer Fall JUNE ’09 – AUG ‘09 SEPT ’09 – NOV ‘09

21. Every Third Ellipse Shown for Plotting Purposes Temporal Coverage Greater than 50% Required for Plotting

22. Conclusions Mid Atlantic Long Range HF Radar Network is celebrating its 10 th anniversary MARCOOS is delivering Quality Controlled Surface Current Data and Forecasts to the US Coast Guard for improved SAR HF Radar Network is helping to describe the nature of the flow in the Mid Atlantic