GLFE MEETING NO. 3 April 12, 2004 TAMDAR Future Deployment Plans & Sensor/Performance Improvements Mark Anderson

Agenda Present and Future Deployment Plans Airline Incentives and Services Recent Performance Improvements Data Quality Improvements High Resolution Data Improved AirDat Forecasting Results Next Generation Sensor Design Improvements Additional Sensor Certifications

Present and future deployment plans Mesaba deployment Deployment completed on Jan. 15, aircraft currently flying 70 cities being served Horizon deployment 67 aircraft currently flying 43 cities being served Expanding fleet 80 aircraft will be equipped Dash Q200s, Q400s, & CRJs

Horizon/Mesaba route structure

Present and future deployment plans In final contract negotiations with Airlines #3, #4, and #5 In preliminary discussions with several other carriers Will provide complete CONUS coverage in addition to segments of Mexico and Canada Working with Army and Air Force for initial equipage of UAV’s Willing to support international deployments

Active deployment plans AirlineNo. of Aircraft Cities Sounding Location Region Mesaba5070Midwest Horizon8043West Coast #311050West, Alaska & Mexico #414078Mississippi East #555 East Coast Totals less duplicates

Air carrier incentives and services Essential to incentivize air carriers for equipage Utilize TAMDAR data pipe and data center to provide: OOOI times Flight tracking Aircraft systems monitoring Text messaging Voice (backup) communications Antenna for cockpit weather EFB interfaces

TAMDAR airborne components Note: Integrated antenna includes satellite weather reception TAMDAR Sensor Transceiver/ Router Voice Com Option Text Messaging Option Iridium/GPS/Wx Antenna Data Buss Converter Heading and Aircraft Systems Inputs GPS Iridium Wx coax for optional weather cockpit display (Coax) (RS-232) Optional EFBs

Recent performance improvements Improved QA systems and flagging of suspect data Run internal AirDat forecasts to monitor sensor performance Upgrading Delta Hound system to identify suspect performance Meteorologist uses Delta Hound and other systems to monitor sensors Firmware improvements Hardware improvements

Recent performance improvements Improved temperature performance through characterization of probe thermal time lag Incorporated compensation in TAMDAR firmware Improved RH performance Replacement of suspect sensors Re-orientation of outboard RH sensor Beginning use of RH sensor with hydrophobic filters Plans to incorporate RH time lag compensation Improved winds aloft flagging of suspect data Upgraded sensor firmware to permit transmission of high frequency sampling data

Increased sampling resolution Original sampling was: 10 hPa intervals on ascent and descent up to 100 hPa above ground level 50 hPa intervals above 100 hPa above ground level New, higher resolution sampling Waited for improvements in temperature, RH, and winds Initiated March 31, hPa intervals on ascent and descent up to 200 hPA above ground level 25 hPa intervals above ground level Expect sensor performance improvements and higher resolution to produce improved forecast modeling results

Improved forecasting model results Significant TAMDAR impact in AirDat/NCAR models High resolution TAMDAR data permits increased model resolution (sigma levels) resulting in skill improvements of more than 20% Improvements in precipitation forecast accuracy of 34-84% over various government models Preliminary results suggest better long range (>96 hr) ground temperature forecasts OSSE is underway Optimization of TAMDAR data weighting Optimization of geographic deployment

Next generation design improvements Change to entry/exit holes to sensor cavity Reduced contamination More reliable RH performance Pitot and static tube restrictions Reduction of noise on pitot and static measurements Improved turbulence measurements/calculations Incorporation of NCAR turbulence recommendations Re-distribution of de-icing heating elements

Next generation design improvements Firmware upgrades Ice accretion rate Temperature correction during de-icing Refinement of calibration constants Refinement of algorithms at high speeds Customized electronic filter time constants depending on properties of sensing element Temperature RH Pressure

Next generation design improvements Extensive calibration at Rolls Royce wind tunnel Speeds from Mach 0.40 to Mach 0.85 Sensing cavity pressures Pitot and static calibrations Mach heating High bandwidth data

Aircraft certifications Saab 340 completed In progress: Bombardier Q200 Bombardier Q400 CRJ 700 Will soon begin: ERJ 135, 140, and 145 ERJ 170

Summary Extensive North American deployment underway Multiple aircraft certifications in progress Continuing improvement of sensor performance and forecasting results.