The above Figure shows a time-series of microphysical data collected by the UW King Air 22 June 1996 from 1300-1400 UTC. At this time, the UW King Air and the NASA DC-8 were co-sampling mid-level cloudiness associated with a decaying convective system in southeastern Kansas. Also indicated in the plot are the times of GOES-8 and SSM/I overpasses. The traces include flight-level pressure, ice particle concentration (#/L; from the Particle Measurement System [PMS] 2D-C probe), and dewpoint depression on the right ordinate. Cloud liquid water content (g/kg; JW and CSIRO probes) is plotted on the left ordinate. The occurrence of both mixed phase and ice clouds are indicated in the Figure. The liquid water probes are "heated-wire" type resistive sensors that measure cloud liquid water content (cloud droplets are typically less than 100 microns in diameter) by measuring changes in electrical resistance across the wire. The JW probe uses a straight wire and the CSIRO probe is a coiled wire. Both probes exhibit accuracies on the order of 0.2 g/m^3 with a resolution of ~.0002 g/m^3, however the CSIRO probe exhibits a larger sensitivity over a broader distribution of cloud droplet sizes. The PMS 2D-C probe uses a photodiode array to image cloud-particles in two dimensions (e.g., a shadowgraph). The particle detection size range for these probes is typically 0.025-1.6 mm in diameter. The resolution of the probe is 0.25-50 microns depending on the configuration of the particular instrument. As air and cloud particles flow through the probe, the number of particles detected is counted, and knowing the airspeed of the sampling platform enables determination of the sampling volume. Hence, a number concentration per unit volume can be calculated.