SNOW PARTICLE-SIZE SPECTRA IN LAKE EFFECT SNOWS

In situ snow particle size spectra measured by Particle Measuring Systems probes near the downwind shore of Lake Michigan during lake-effect snow storms are presented and discussed. Ice water contents ranged from 0.002 to 0.264g m-3. Concentrations of sizes >1mm were generally exponentially distributed; however, concentrations of smaller particles usually were greater than suggested by the exponential fitted to concentrations of sizes >1mm. Exponential distribution parameters (N0 and λ) are consistent with previously reported values. There is evidence for particle aggregation at -25°C. -Author