FORECASTING OF SUPERCOOLED CLOUDS

Using parameterizations of cloud microphysics, a technique to forecast supercooled cloud events is suggested. This technique can be coupled on the mesoscale with a prognostic equation for cloud water to improve aircraft icing forecasts. The procedure is validated using comparison s with airborne measurements from the Canadian Atlantic Storms Program . As an illustration of the application of this forecast technique, co nstant-pressure maps showing regions of cloud ice, supercooled cloud w ater, and cloud liquid water are presented for two particular cases.