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Edmonton Area Control Centre

Edmonton Area Control Centre. Cross-Polar Air Traffic, Space Weather & HF Communications. Outline. Edmonton Area Control Centre Airspace Arctic Air Traffic Flow Patterns Intro to ATC Polar Flight Challenges How Space Weather affects ATC How scientists can help us.

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Edmonton Area Control Centre

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  1. Edmonton Area Control Centre Cross-Polar Air Traffic,Space Weather & HF Communications Presented by Joël Morin to Space Weather Workshop 2008

  2. Outline • Edmonton Area Control Centre Airspace • Arctic Air Traffic Flow Patterns • Intro to ATC • Polar Flight Challenges • How Space Weather affects ATC • How scientists can help us.

  3. Edmonton Area Control Centre • Largest domestic Flight Information region in the World • 3,600,000 mi2

  4. Edmonton ACC Airspace above FL290 3.6 Million mi2

  5. Edmonton Area Control Centre • Largest domestic Flight Information region in the World • 3,600,000 mi2 • Major crossroad • Western North AmericaEurope

  6. Edmonton Area Control Centre • Largest domestic Flight Information region in the World • 3,600,000 mi2 • Major crossroad • Western North America  Europe • Eastern North America Asia via Alaska

  7. Edmonton Area Control Centre • Largest domestic Flight Information region in the World • 3,600,000 mi2 • Major crossroad • Western North America Europe • Eastern North America Asia via Alaska • Eastern North America Asia via Polar gateways

  8. Air Traffic Control’s Function • Safe, Orderly, Expeditious flow of air traffic • In the IFR domain (aircraft flying on instruments), ATC provides the separation between aircraft.

  9. Vertical Separation – 1000 feet (in most cases)

  10. Non-radar Lateral Separation - In the arctic, 60 nautical miles

  11. Non-radar Longitudinal Separation 15 minutes (CMNPS airspace)

  12. Under certain conditions10 minutes

  13. Polar Flights • Most Challenging • Fuel-critical • Payload-limited • Beyond Direct Controller – Pilot Communications (VHF) • Rely on relayed High Frequency (HF) Family D in arctic (2.9 – 13.3 KHz) • Satellite communications emerging

  14. Polar Flights • Most Challenging • Fuel-critical • Payload-limited • Beyond Direct Controller – Pilot Communications (VHF) • Rely on relayed High Frequency (HF) Family D in arctic (2.9 – 13.3 KHz) • Satellite communications emerging.

  15. North American Airports Anchoring Polar Flights

  16. Asian Airports served by Polar Flights

  17. Sample Polar Great Circle Routes

  18. Sample Polar Great Circle Routes with Comms

  19. Communications

  20. Polar Gateways

  21. One day’s trajectories over a fix Red Lines: GCRs Yellow Lines: actual trajectories

  22. Things get kinda tight…

  23. April 15, 2008 - Colour Coded

  24. Polar Caravan

  25. Situation • Critical flights • Large amounts of spacing • 60 miles laterally • 15 minutes longitudinally ( ~120 nautical miles) • Limited flight levels • 320 • 340 • 380

  26. Situation • Critical flights • Large amounts of spacing • 60 miles laterally • 15 minutes longitudinally ( ~120 nautical miles) • Limited flight levels • 320 • 340 • 380.

  27. Requested Altitude Change

  28. Credit: SOHO Consortium, ESA, NASA Then – Just as things are going well….

  29. Geomagnetic Storm • HF Blackout • Varying geographic area • Err on the side of safety • Satellite Feeds may be lost • Satellite relay of VHF frequencies may be lost • GPS accuracy may be compromized

  30. Mitigation • We are REACTING • We don’t like to react…. • Increased longitudinal separation • Due to uncertainty of aircraft positions • More conservative style of control • Solve problems earlier • Assume we will not hear back from the aircraft • Reduced capacity

  31. How Space Weather Science can help • Give us as much notice as possible • Graphical & geographical products • Easily & rapidly understandable by non-scientists • Categorize: • HF blackout? • Satellite blackout? loss? • Duration of effects

  32. Questions?

  33. Edmonton Area Control Centre April 2008

  34. CZEG With NAM airports

  35. April 15 zoomed

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