Henning, SilviaBojinski, StephanDiehl, KarolineGhan, StevenNyeki, StephanWeingartner, ErnestWurzler, SabineBaltensperger, Urs2024-08-142024-08-142004-03-160094-82761944-800710.1029/2003gl019025https://irf.fhnw.ch/handle/11654/46775In situ aerosol and cloud drop microphysical measurements at a high-alpine site are used to investigate aerosol partitioning between cloud and interstitial phases in natural, mid-latitude, mixed-phase clouds. Measurements indicate a decrease in the activated aerosol fraction (FN) for particle diameters dP > 100 nm with cloud temperature from FN ~ 0.54 in summer liquid-phase clouds to FN ~ 0.08 in winter mixed-phase clouds. The latter may be attributed to the Bergeron-Findeisen mechanism whereby ice crystals grow at the expense of liquid water drops, releasing formerly activated aerosols back into the interstitial phase. This provides a means to distinguish the indirect effects of aerosols on drops and ice crystals.en550 - Geowissenschaften01A - Beitrag in wissenschaftlicher Zeitschrift