TY  - JOUR
A1  - Schmidt, Susan
A1  - Schneider, Johannes
A1  - Klimach, Thomas
A1  - Mertes, Stephan
A1  - Schenk, Ludwig Paul
A1  - Kupiszewski, Piotr
A1  - Curtius, Joachim
A1  - Borrmann, Stephan
T1  - On-line single particle analysis of ice particle residuals from mountain-top mixed-phase clouds using laboratory derived particle type assignment
T2  - Atmospheric chemistry and physics. Discussions
N2  - In-situ single particle analysis of ice particle residuals (IPR) and out-of-cloud aerosol particles was conducted by means of laser ablation mass spectrometry during the intensive INUIT-JFJ/CLACE campaign at the high alpine research station Jungfraujoch (3580 m a.s.l.) in January/February 2013. During the four week campaign more than 70000 out-of-cloud aerosol particles and 595 IPR were analyzed covering a particle size diameter range from 100 nm to 3 μm. The IPR were sampled during 273 hours while the station was covered by mixed-phase clouds at ambient temperatures between -27 °C and -6 °C. The identification of particle types is based on laboratory studies of different types of biological, mineral and anthropogenic aerosol particles. As outcome instrument specific marker peaks for the different investigated particle types were obtained and applied to the field data. The results show that the sampled IPR contain a larger relative amount of natural, primary aerosol, like soil dust (13 %) and minerals (11 %), in comparison to out-of-cloud aerosol particles (2 % and <1 %, respectively). Additionally, anthropogenic aerosol particles, like particles from industrial emissions and lead-containing particles, were found to be more abundant in the IPR than in the out-of-cloud aerosol. The out of-cloud aerosol contained a large fraction of aged particles (30 %, including organic material and secondary inorganics), whereas this particle type was much less abundant (3 %) in the IPR. In a selected subset of the data where a direct comparison between out-of-cloud aerosol particles and IPR in air masses with similar origin was possible, a pronounced enhancement of biological particles was found in the IPR.
Y1  - 2016
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/42610
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-426102
SN  - 1680-7375
N1  - © Author(s) 2016. This work is distributed under the Creative Commons Attribution 3.0 License.
VL  - 16
IS  - 365
SP  - 1
EP  - 29
PB  - European Geosciences Union
CY  - Katlenburg-Lindau.
ER  -