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@ARTICLE{Field:59801,
author = {Field, P. R. and Möhler, O. and Connolly, P. and Krämer,
M. and Cotton, R. and Heymsfield, A. J. and Schnaiter, M.
and Saathoff, H.},
title = {{S}ome ice nucleation characteristics of {A}sian and
{S}aharan desert dust},
journal = {Atmospheric chemistry and physics},
volume = {6},
issn = {1680-7316},
address = {Katlenburg-Lindau},
publisher = {EGU},
reportid = {PreJuSER-59801},
pages = {2991 - 3006},
year = {2006},
note = {Record converted from VDB: 12.11.2012},
abstract = {The large (7m x 4m cylinder, 84 m(3)) AIDA ( Aerosol
Interactions and Dynamics in the Atmosphere) cloud chamber
facility at Forschungszentrum, Karlsruhe, Germany was used
to test the ice nucleating ability of two desert dust
samples from the Sahara and Asia. Aerosol samples were
lognormally distributed with a mode diameter of 0.4(+/- 0.1)
mu m and geometric standard deviation of similar to 1.7(+/-
0.2). At temperatures warmer than -40 degrees C droplets
were formed before ice crystals formed and there was
generally no deposition nucleation observed. At temperatures
colder than -40 degrees C both dust samples exhibited dual
nucleation events that were observed during the same
expansion experiment. The primary nucleation event occurred
at ice saturation ratios of 1.1 to 1.3 and is likely to be a
deposition nucleation mode. The secondary nucleation event
occurred at ice saturation ratios between 1.35 and 1.5. We
cannot categorically determine whether this ice nucleation
event is via a further deposition mode or a condensation
mode, but the presence of some soluble material in the dust
samples leads us to favour the latter process. The activated
fractions of desert dust ranged from similar to $5-10\%$ at
-20 degrees C to $20-40\%$ at temperatures colder than -40
degrees C. There was no obvious difference between the
nucleation behaviour of the two dust samples.},
keywords = {J (WoSType)},
cin = {ICG-1},
ddc = {550},
cid = {I:(DE-Juel1)VDB790},
pnm = {Atmosphäre und Klima},
pid = {G:(DE-Juel1)FUEK406},
shelfmark = {Meteorology $\&$ Atmospheric Sciences},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000239176200001},
doi = {10.5194/acp-6-2991-2006},
url = {https://juser.fz-juelich.de/record/59801},
}