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) Cloud fractions – Malcolm Brooks (UoR/UKMO)

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

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

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

Comparison of model humidity Chilbolton 94 GHz January

Comparison of model humidity Chilbolton 94 GHz January

Palaiseau in summerChilbolton in winter

RMS error during winter month at 94 GHz

RMS error during summer month at 94 GHz

No problem at 35 GHz

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