Ice residual properties in mixed-phase clouds at the high-alpine Jungfraujoch site.

ABSTRACT: Ice residual (IR) and total aerosol properties were measured in mixed-phase clouds (MPCs) at the high-alpine Jungfraujoch research station. Black carbon (BC) content and coating thickness of BC-containing particles were determined using single-particle soot photometers. The ice activated fraction (IAF), derived from a comparison of IR and total aerosol particle size distributions, showed an enrichment of large particles in the IR, with an increase in the IAF from values on the order of 10^-4 to 10^-3 for 100 nm (diameter) particles to 0.2 to 0.3 for 1 μm (diameter) particles. Nonetheless, due to the high number fraction of submicrometer particles with respect to total particle number, IR size distributions were still dominated by the submicrometer aerosol. A comparison

SUBMITTER: Kupiszewski P 

PROVIDER: S-EPMC5175215 | biostudies-literature | 2016 Oct

REPOSITORIES: biostudies-literature