Aviation Products Derived from GO by pengtt

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									Aviation Products Derived from GOES Satellite Data
Gary P. Ellrod Office of Research and Applications (NOAA/NESDIS) Camp Springs, MD

Product Development Areas
• Aviation Hazards
– – – –
– – – –

• Resources
– 0.7 FTE (G. Ellrod) – 1 contractor as of June „00 (Raytheon) – 3 HP-755 workstations

Low clouds / Fog Aircraft Icing Volcanic Ash Microburst Winds
High Density Winds Clouds above 12 kft Convective instability CAT climatology

• Related projects

• Funding
– GOES I-M Product Assurance Plan (NESDIS)

Experimental Satellite Products
• GOES Data Required: – Imager: Multi-spectral data (5 bands) – Sounder: Temperature / moisture profiles • Means of Display: Internet (Hourly) – http://orbit-net.nesdis.noaa.gov/arad/fpdt/

• Evaluators: – NWS (WFOs and AWC), DoD, airlines, etc.
• In-house Validation Uses: – Pilot reports, surface observations, upper air data, other satellite data

Fog and Low Cloud Detection at Night

Improved Depiction of Low Clouds / Fog
• GOES Enhanced Low Cloud Product
– Uses GOES IR (10.7 - 3.9 mm) image, and IR - surface temperature difference – Thresholds set based on statistical analysis – Red indicates IFR ceilings (<1000 ft) likely

• Validation based on >500 METAR reports:
– Probability of Detection (POD) ~74% – False Alarm Ratio (FAR) ~ 14%

• Possible upgrades:
– Reduce under-detection of IFR conditions

In-flight Icing Detection
• GOES Aircraft Icing Product
– Uses 3 IR (3.9, 10.7, 12 mm), + Visible – Icing shown in blue

• Validation:
– POD ~ 80% – FAR ~10%

• Needed upgrade:
– Height information

Improved Volcanic Ash Detection
• GOES 3-Band IR Ash Product
– Uses 3.9 mm, along with 10 & 12 mm IR – Improves on “split window” technique – In use at Washington VAAC

Columbia

Equador

• Develop strategies for loss of 12 mm IR

Wind Gust Potential from GOES Sounder

GOES Microburst Products
• Wind Index, Wet & Dry Microburst Indices
– Use GOES Sounder temp. / moisture profiles

• Validation:
– Wind Index mean error ~ 3 knots – Wet Microburst Index correlates highly with microburst occurrence at Cape Canaveral (Fla. Institute Of Technology)

• Possible upgrades:
– Improve Wind Index at night, reduce area of dry microburst risk, provide site-specific products

• Microburst Indices planned for NWS AWIPS

Summary and Conclusions
• Experimental GOES products have been developed in following aviation hazard areas:
– – – – Low ceilings / fog In-flight icing Convective wind gusts Volcanic ash

• Validation shows good product quality • Improvements planned, but resources limited • Products can also be derived with data from polar spacecraft (NOAA, METOP, etc)


								
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