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Review of model/obs/products

Review of model/obs/products. Models. Fluxes ECMWF fluxes will added v soon (Openshaw) UKMO Global model data In testing Damian to provide more data. New products. IWC from radar and lidar – Gerd-Jan (KNMI) Donovan (2003) IWC from radar and Doppler velocity – UoR Matrosov et al. (2002)

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Review of model/obs/products

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  1. Review of model/obs/products

  2. Models • Fluxes • ECMWF fluxes will added v soon (Openshaw) • UKMO Global model data • In testing • Damian to provide more data

  3. New products • IWC from radar and lidar – Gerd-Jan (KNMI) • Donovan (2003) • IWC from radar and Doppler velocity – UoR • Matrosov et al. (2002) • Cloud fractions – Malcolm Brooks (UoR/UKMO)

  4. Future products • IWC from radar and lidar - CNRS • Tinel et al. (2000) • Drizzle from radar and lidar – UoR • O’Connor (2004)

  5. Potential products • IWC and air velocity from radar – CNRS • LWC from radar and lidar – TUD • LWC from radar and lidar – UoR • IWC/LWC from dual-wavelength - UoR

  6. Comparison of model humidity • Attenuation of radar due to water vapour (and other gases) calculated from model parameters using mwpp package (R. Hogan) • Truth difficult to ascertain • Raman humidity data sparse: will check this • Choose one model, compute relative RMS error of other models

  7. Comparison of model humidity • Chilbolton • 94 GHz • January

  8. Comparison of model humidity • Chilbolton • 94 GHz • January

  9. Palaiseau in summer Chilbolton in winter

  10. RMS error during winter month at 94 GHz

  11. RMS error during summer month at 94 GHz

  12. No problem at 35 GHz

  13. Version control • Model is stable • Check fluxes • Additions only • Categorization is semi-stable • Calibration issues • Improve clutter rejection • Improve bright-band detection • Products • Cloud fraction ok • Reliance on calibration

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