FPAW – Weather Forecast Performance Requirements Validation 25 August 2015 Chris Ermatinger, Ops. Research Analyst Aviation Weather Division, Policy and.

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Presentation transcript:

FPAW – Weather Forecast Performance Requirements Validation 25 August 2015 Chris Ermatinger, Ops. Research Analyst Aviation Weather Division, Policy and Requirements Branch (ANG-C64)

Purpose of Performance Requirements Development 1,2 The FAA established a goal to develop firm mid-term performance requirements for enhanced weather information based on key NextGen artifacts. Cooperation between FAA- NWS through the TFM Requirements Working Group (TRWG) to develop services out to NextGen MOC. This activity will result in the development analytically verified weather forecast performance requirements. 1 FAA, NAS Lifecycle Planning (NLP) Project Level Agreement (PLA) Systems Development – New ATM Requirements – Weather Transition Fiscal Year MITRE CAASD, “Results from the Operational Weather Needs Analysis (OWNA) of Weather Dependent Increments for the NAS Segment Implementation Plan (NSIP) Version 5.0,” June

Preliminary Weather Performance Parameters from Functional Analysis preliminary weather forecast requirements based off the Mid-Term CONOPS and NSIP, then fleshed out by TRWG. Preliminary performance requirements cover onset and cessation of forecasts with look-ahead times of 1-, 2-, 4-, and 8-hours for Convection, Ceiling and Visibility, and Surface Winds. Analyze the performance requirements through a lens of CATM operational decisions (i.e., TMIs and responses). 3 3 Heuwinkel, Richard, “Statement of Preliminary Functional Requirements for Weather Information to Support Traffic Management Initiatives,” March Weather PhenomenonLocation AccuracyTiming AccuracyProbability of DetectionFalse Alarm Ratio Terminal Convection En route Convection Airport C&V Airport Surface Winds

Approach to Deriving/Validating Weather Performance Requirements (Notional Workflow) 4 Weather and NAS Simulators – Low-fi response models & math models AvMet and DART (i.e., TFM fidelity) ANG-C41 and AirTOp (i.e., ATC fidelity) NEXTGEN KEY PERFORMANCE INDICATOR AREAS METRIC CapacityDaily Capacity City Pair Airborne Time Effective Gate-to-Gate Efficiency Gate Arrival Delay Taxi-In Time Taxi-Out Time EnvironmentFuel Burn OTHER PERFORMANCE INDICATOR AREAS METRIC Airline Schedule Cancellations Diversions Efficiency Pre-Departure Delay Total Departure Delay Arrival Delay Distance Flown Airline FlexibilitySubstitution Opportunities Traffic Management Stability Airport Program (GDP/GS) Re- planning Number of Route Availability Changes Varied Weather Info Parameters Actual Weather & Traffic Scenarios ATM Business Rules Scenario Development Simulation and Modeling Analysis of ResultsWeather Performance Requirements

Targeted Outcomes Locating an appropriate level of fidelity for each weather scenario/operational efficiency.  Must acknowledge dependencies among forecast look-ahead times.  Incremental planning is a factor.  System that honors previous decisions. Must ensure that performance requirements are synchronized.  For instance, within the terminal airspace a moving weather system’s location error and timing error are related.

Targeted Outcomes Understand the relationship between metric definitions (i.e., location error) and established metrics (i.e., POD and FAR).  Acknowledge relationships between POD/FAR and the definition of location/timing accuracy.  Related to weather coverage. Design a set of synchronized requirements for each of the weather phenomenon. Requirements include  Location and timing error tolerances.  Target POD and FAR values.  Cast with the appropriate level of fidelity for the CATM WP4 operating environment. Acc. w/ 3 NMPOD RangeFAR RangeTiming Error …………

Current status: Generating and Mining Simulated Data AvMet developed ~200 scenarios covering CATM operations addressing  Terminal convection,  En route convection,  Airport Ceiling & Visibility,  Surface Winds AvMet simulating all weather scenarios with DART ANG-C41 simulating scenarios with AirTOp covering terminal convection at ATL. Preliminary results were delivered at the end of July 2015.

Schedule Oct 14 Nov 14 Dec 14 Jan 15 Feb 15 Mar 15 Apr 15 May 15 Jun 15 Jul 15 Aug 15 Sep 15 Oct 15 Nov 15 Dec 15 Scenario Deliverable 2: Preliminary Convective WX Scenarios Scenario Deliverable 1: Kick-Off, Project Plan Scenario Deliverable 3: Preliminary Scenarios covering C&V and Surface Winds Scenario Deliverable 4: Final Scenarios for Convection, C&V, and Surface Winds M&S Deliverable 2: Convective WX Results M&S Deliverable 1: Project Plan M&S Deliverable 3: C&V and Surface Winds Results M&S Deliverable 4: Final Results M&S Deliverable 1v: Project Plan M&S Deliverable 2v: Convective WX Results SME Kickoff SME Update SME Review Issue Final Report SME Review AvMet developed Scenarios to exercise the Weather Performance Requirements for CATM operations. AvMet simulates and analyzes Weather Performance Requirements for CATM operations. Periodic reviews of approach, scenarios, and results by the FAA SME team. 8 FAA branch, ANG-C41 conducts a parallel analysis of Convective Weather in the terminal airspace to help verify M&S methods. M&S Deliverable 4v: Final WX Results