NSWRC Operational Scenarios
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Transcript of NSWRC Operational Scenarios
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NSWRC Operational ScenariosOctober 18, 2012
Mark Weadon
AvMet Applications
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Purpose of Operational Scenarios
• Legacy requirements provide specifications of what terminal weather and airport surveillance radars do independently
• The key to multi-functionality is a phased array radar engineered to meet the demands of surveillance and weather simultaneously
• Use case scenarios describe actual weather and surveillance target loading on a multi-function phased array radar under stressful conditions
• Sternest test for a multi-function radar is heavy air traffic coupled with complex weather in the terminal airspace
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Methodology• Two scenarios: O’Hare International Airport (ORD) on 23-24 June 2010;
Atlanta Hartsfield (ATL) on 29-30 June 2008 • Both days represent peak operations at large hubs during significant
weather; weather is bad, yet not so bad as to shut down airport operations These scenarios represent the sternest challenge for multifunction radar
resource allocation: many aircraft and convective targets in the same airspace
• Once a candidate day/time selected, the Weather Analysis and Visualization Environment (WAVE) tool used to develop graphics analyze actual traffic counts and weather loading within the airspace
WAVE uses data feeds from Enhanced Traffic Management System (ETMS) for airborne targets
Airborne targets temporally and spatially correlated with the National Convective Weather Diagnostic (NCWD)
Aircraft counts at 5 min intervals within 110km (60nm) radius of terminals
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Scenario #1 – O’Hare International Airport (ORD) 23-24 June 2010
• Wednesday afternoon/night at an extremely busy hub• Mid-afternoon line of convection developed quickly to west,
swept across airport in late afternoon at time of peak scheduled in air traffic, causing numerous delays and reroutes for inbound flights
• Solid line convection with echo tops>45K ft; VIP >60dBz; numerous microbursts within the Chicago TRACON area; hail and tornados reported to south of ORD
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21 km
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Pre-impact – 6/23/10 2020Z
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Convection Building – 6/23/10 2120Z
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Maximum Impact – 6/23/10 2300Z
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Microbursts23 June, 2300Z,
O’Hare Airport
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Severe Weather23 June, 2326Z
53 km
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Post-impact – 6/24/10 0340Z
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Animation
Animation shown here
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Chicago: Entire DomainSmall Aircraft Mid-sized Aircraft Large Aircraft NCWD Coverage
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Chicago: Northeast RegionAircraft NCWD Coverage
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Chicago: Northwest RegionAircraft NCWD Coverage
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Chicago: Southeast RegionAircraft NCWD Coverage
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Chicago: Southwest RegionAircraft NCWD Coverage
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Scenario #2 – Atlanta Hartsfield Airport (ATL) 29-30 June 2008
• Sunday afternoon/night into Monday morning at extremely busy hub
• Mid-afternoon line of convection developed quickly, swept across airport in late afternoon at time of peak scheduled in air traffic, causing numerous delays and reroutes for inbound flights
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35 km
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x MPAR
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Pre-impact – 6/29/08 1110Z
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Convection Building – 6/29/08 2005Z
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Maximum Impact – 6/30/08 0000Z
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Post-impact – 6/30/08 0201Z
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Animation
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Atlanta: Entire DomainSmall Aircraft Mid-sized Aircraft Large Aircraft NCWD Coverage
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Atlanta: Northeast RegionAircraft NCWD Coverage
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Atlanta: Southeast RegionAircraft NCWD Coverage
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Atlanta: Northwest RegionAircraft NCWD Coverage
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Conclusions• Each multi-function radar face is assumed to operate
independently-- most stressful scenario for the MPAR is, by definition, the one that appears within the field of view of any one of its faces.
• Convective activity and aircraft counts are, roughly speaking, inversely related.
• The multi-function radar must be agile and have sufficient radar resources to track aircraft and weather (including severe weather and microbursts) simultaneously in the same sector.
• Other, unforeseen factors may drive radar resource use even higher: i.e., non-cooperative aircraft requiring intensive tracking
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THANK YOU
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