Środowiskowe Seminarium Fizyki Atmosfery

Observed cloud droplet spectra are wide and often multimodal. This presentation will provide a review of processes affecting the spectrum with the emphasis on the effects of cloud turbulence and entrainment. Cloud turbulence involves a wide range of spatial scales, from those characterizing energy-containing eddies, of the order of 100 meters in cumulus clouds, down to the Kolmororov microscale, about 1 millimeter or so in typical cloud conditions. I will review previous studies that emphasize processes at either end of the range. This review will leave one wondering what spatial scale is indeed the most important for the overall impact. Although I will not provide the answer to this question, I will suggest a research strategy that will eventually do.