1 / 31

Safety and Effectiveness of operations at Sea

Safety and Effectiveness of operations at Sea. F.J.M. Davidson 1 , A. Allen 2 , G. B. Brassington 3 , O. Breivik 4 , P. Daniel 5 , B. Stone 6 , M. Kamachi 7 , S. Sato 8 , B. King 9 , Fabien Lefevre 10 , Marion Sutton 10 1 DFO, St. John's, Canada 2 USCG, Groton, USA

naiara
Download Presentation

Safety and Effectiveness of operations at Sea

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Safety and Effectiveness of operations at Sea • F.J.M. Davidson1, A. Allen 2, G. B. Brassington3, O. Breivik4, P. Daniel5, B. Stone6, M. Kamachi7, S. Sato8, B. King9, Fabien Lefevre10, Marion Sutton10 • 1DFO, St. John's, Canada • 2 USCG, Groton, USA • 3 CAWCR, Bureau of Meteorology, Melbourne, Australia • 4 Met No, Bergen, Norway • 5 Meteo France, Toulouse, France • 6 CCG, St. John's, Canada • 7MRI, Tokyo, Japan • 8 JCG, Tokyo, Japan • 9 APASA, Surfers Paradise, Australia 10 CLS, Ramonville-St.Agne, France GODAE Final Symposium, 12 – 15 November 2008, Nice, France

  2. Outline • Need • Search and Rescue Applications • Other safety applications • Efficiency applications • Concluding remarks GODAE Final Symposium, 12 – 15 November 2008, Nice, France

  3. GPS ARGOS GODAE ocean forecasting adds Value added information for the Search and Rescue Coordinator Drifter Deployment GODAE Final Symposium, 12 – 15 November 2008, Nice, France

  4. Drift Prediction occurrence:Japanese Coast Guard • Nakhodka Tanker Oil spill 1997 motivated need for better drift prediction, research and development GODAE Final Symposium, 12 – 15 November 2008, Nice, France

  5. Where you are. Where Coast Guard is looking for you … In the wrong place. Canadian Example Old New Drifter Release GODAE Final Symposium, 12 – 15 November 2008, Nice, France

  6. Australia: Blue Link • Eastern Australian Current: Validation exercise • Drifter’s overlayed on computed circulation GODAE Final Symposium, 12 – 15 November 2008, Nice, France

  7. 10 km NCOM Blue-Link Error (km) Comparison to 5 day drift • Drifter Validation 6 buoys released in Eastern Australian Current • Drogued at 15m • Example from APASA*/CSIRO *Australian engineering group building support/decisions tools for oil drift, chemical spills and search and recue drift GODAE Final Symposium, 12 – 15 November 2008, Nice, France

  8. Lat. Initial position of Buoy Buoy (84631) Buoy (25141) Jason-1 geost. current Assim: COMPASS-K Assim: MOVE Long. Impact of 4 D Var Assimilation System • Coast Guard uses Geostrophic currents + COMPASS-K (1/4o) currents • MOVE system use for drift is starting GODAE Final Symposium, 12 – 15 November 2008, Nice, France

  9. Distance(km) Distance from obs. buoy Jason-1 geost. current Assim: COMPASS-K Assim: MOVE Lead time (hr) Impact of 4 D Var Assimilation System • Improvements from assimilation visible • 5 day forecast error under 25 km • 30km radius search zone = 2000 sq km’s GODAE Final Symposium, 12 – 15 November 2008, Nice, France

  10. Canadian Coast Guard Search and Rescue Operations • 5 search and rescue centers • Environmental data is duplicated in all 6 centers • Search and Rescue Coordinator can run drift prediction locally and create search plan within 5 minutes. • Min-Max method used • Transition to Monte Carlo method makes better use of current forecasts • Environment Canada provides winds • DFO provides surface currents

  11. Search and Rescue structurein Japan • Japanese Coast Guard • 11 regions • Central Tokyo data server and drift prediction • Remote operations from regions • Data and Forecast system thus centralised • Both Japan Meteorological Agency and Coast Guard run drift predictions • <3 days JCG • >3 days JMA • Monte Carlo method used for drift • Coast Guard Modifies ocean current field based on observations GODAE Final Symposium, 12 – 15 November 2008, Nice, France

  12. US SAR OPS US Coast Guard uses central environmental data base server Forecast products retrieved by 45 search and rescue centers on request. Select time and location for data to download. SAROPS: uses Monte Carlo method. Location likelihood updated based on search GODAE Final Symposium, 12 – 15 November 2008, Nice, France

  13. US SAR OPS SAROPS: Particle distribution and surface currents from NOAA North Atlantic HYCOM model RTOFS. GODAE Final Symposium, 12 – 15 November 2008, Nice, France

  14. Norwegian: Drift service interfacehttp://kilden.met.no WMS client for simple visualization Oil spill forecast order form Menu for drift services and visualization GODAE Final Symposium, 12 – 15 November 2008, Nice, France

  15. The impact of high-resolution current fields (1) Open-ocean conditions: 1.5km resolution vs 4km resolution (currently the operational model). In open-ocean conditions the two models are virtually identical GODAE Final Symposium, 12 – 15 November 2008, Nice, France

  16. The impact of high-resolution current fields(2) Near-shore trajectories: 1.5km 4km GODAE Final Symposium, 12 – 15 November 2008, Nice, France

  17. 1.5km 4km GODAE Final Symposium, 12 – 15 November 2008, Nice, France

  18. 1.5km 4km GODAE Final Symposium, 12 – 15 November 2008, Nice, France

  19. 1.5km 4km GODAE Final Symposium, 12 – 15 November 2008, Nice, France

  20. 1.5km 4km GODAE Final Symposium, 12 – 15 November 2008, Nice, France

  21. New Development Stranding particles on a high-resolution coastline contour (GSHHS) 1.5km 4km The trajectories are highly influenced by the strong coastal current present in the high-resolution current field GODAE Final Symposium, 12 – 15 November 2008, Nice, France

  22. Ocean routing Shipping company needs Security: Crew+ Equipement Quickest route * Stick to time of arrival Constraints: Panama, Suez Reduce of fuel consumption Solution: Use GODAE ocean forecast to take advantage of the current Guadeloupe GODAE Final Symposium, 12 – 15 November 2008, Nice, France

  23. Route recommendation – example 2 • Example of a route recommendation to BROSTROM in the Gulf of Mexico for the route Houston to Pozos GODAE Final Symposium, 12 – 15 November 2008, Nice, France

  24. Route recommendation – example 1 BROSTROM: Trinidad to Houston GODAE Final Symposium, 12 – 15 November 2008, Nice, France

  25. Route recommendation – example 1 BROSTROM: Trinidad to Houston GPS speed Rel. speed GODAE Final Symposium, 12 – 15 November 2008, Nice, France

  26. Need for Coupled Atmosphere-Ocean-Ice Forecasting system Prévision Nuage bas (48 heures) • Coast Guard • Requires advanced knowledge of Ice Free route • Manages safety along “ice free” route • Asks ships to follow official route • Coupled Atmospheric Ocean Ice Forecast System required: EC-DFO collaboration • Plan to extend this system for North West Atlantic GODAE Final Symposium, 12 – 15 November 2008, Nice, France

  27. Other requirements for GODAE products • Ship routing tools through Ice zones • Ice and current forecast for operational fisheries management GODAE Final Symposium, 12 – 15 November 2008, Nice, France

  28. Ocean currents for iceberg forecasting • Mercator ocean currents used as input to the Canadian Ice Service iceberg forecast model produced results improves on operational model GODAE Final Symposium, 12 – 15 November 2008, Nice, France

  29. Concluding Remarks • GODAE ocean forecast products: • Allready in use in different applications • Search and rescue • Marine routing: efficiency and safety through strong currents and ice covered waters • When it comes to ship routing and searching…. You can do better by using ocean forecast products instead of climatology • Outreach/Interaction needed GODAE Final Symposium, 12 – 15 November 2008, Nice, France

  30. Concluding Remarks GODAE products have been evaluated on individual cases Long hindcasts/reanalysis runs need to be used Set standard benchmark data base for surface drifters for inter-comparison (include coast guard buoys) Develop model forecast vs observed drift error statistics to adjust future application of forecast systems GODAE Final Symposium, 12 – 15 November 2008, Nice, France

  31. Rescueing is a big effortwe need ocean knowledge to make it efficient GODAE Final Symposium, 12 – 15 November 2008, Nice, France

More Related