InFlight Icing Where are we, what are the gaps?

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InFlight Icing Where are we, what are the gaps?

2005 NASA ASAP Science Meeting, Boulder, ColoradoInFlight IcingWhere are we, what are the gaps?Marcia K. PolitovichFAA IFIPDT LeadNCAR


InFlight Icing• Supercooled liquid water– In clouds and precipitation• Cloud vs. SLD– Are SLD conditions present? (flag)• Severity– Need estimate of LWC, very rough estimate ofdrop size (cloud vs. SLD is probably goodenough)• Type?


“Except for an airplane that has iceprotection provisions that meet part34 of Appendix A, or those fromtransport category airplane typecertification, no pilot may fly(1) Under IFR into known or forecastlight or moderate icing conditions; or(2) Under VFR into known light ormoderate icing conditions…”


Where are we?


Where are we?


What are the gaps?• Cloud identification– Cloud top height and temperature still a problem– Clouds overlying snow or ice surfaces– Nighttime and terminator problemsCan NASA products add information through a fuzzy logic approach?• Cloud composition: not everycloud with T


What you’ll see and hear today• Description of the satellite products (Minnis)• Impressions from forecasting (Bernstein and Wolff)• Benchmarking skill of satellite and CIP products(Chapman)• Some aircraft/product comparisons (Wolff)• Additional work on aircraft/product comparisons(Haggerty)• Using the products to improve RUC µphysics(Benjamin)• Icing and supercomputing (Nguyen)• And… TAMDAR (Daniels)

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