VERDI - Vertical distribution of ice in Arctic clouds

April-May 2012

The research aircraft Polar 5 of AWI at Inuvik airport. Picture: J. Schneider, MPIC.

VERDI was a project coordinated by the University of Leipzig (Prof. M Wendisch). It aims for the investigation of the radiation budget of Arctic ice clouds. Please visit the VERDI homepage for details. The campaign with the research aircraft Polar-5 (operated by Alfred Wegener Institute (AWI), Bremerhaven) was conducted in April/May 2012 in Northern Canada (Inuvik).

Look here for the campaign blog!

Instruments:
We operated the ALABAMA including an optical particle counter (OPC) to measure the size and composition of aerosol particles that may act as cloud precursors.

People involved in the ALABAMA measurements:
A. Roth, J. Schneider, T. Klimach, C. Kirsch.

The Aerosol and Cloud Physics group of the Particle Chemistry Department also operated cloud microphysics instruments (CCP, PIP) which are mounted outside the aircraft in a PMS cannister.

People involved:
R. Weigel. M. Klingebiel, S. Molleker, W. Schneider.

Results:

Klingebiel, M., de Lozar, A., Molleker, S., Weigel, R., Roth, A., Schmidt, L., Meyer, J., Ehrlich, A., Neuber, R., Wendisch, M., and Borrmann, S.: Arctic low-level boundary layer clouds: in situ measurements and simulations of mono- and bimodal supercooled droplet size distributions at the top layer of liquid phase clouds, Atmos. Chem. Phys., 15, 617-631, doi:10.5194/acp-15-617-2015, 2015.

Roth, Anja: Untersuchungen von Aerosolpartikeln und Wolkenresidualpartikeln mittels Einzelpartikel-Massenspektrometrie und optischen Methoden, PhD thesis (in German), University Mainz, 2014.
http://nbn-resolving.de/urn:nbn:de:hebis:77-37770



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