MEASUREMENTS OF WAVE-CLOUD MICROPHYSICAL PROPERTIES WITH 2 NEW AIRCRAFT PROBES

Measurements of ice water content (IWC) and mean ice-crystal size and concentration made by two in-situ probes, CVI and PVM, were compared o n the DC-8 aircraft during SUCCESS flights in orographic ice clouds. T he comparison of IWC in these wave clouds, that formed at temperatures of about -38 degrees C on April 30 and -62 degrees C on May 2, 1996, showed good agreement. The comparison of ice crystal concentrations ag reed better for the April-30 clouds than for the May-2 clouds; and the effective radius compared for both probes and for remote retrievals f rom aircraft and satellite for a segment of the Berthoud wave cloud (M ay 2) agreed within 30%. The measured parameters of the ice crystals w ere similar to earlier measurements and recent modeling of cold wave c louds.