Formation of cloud droplets by multicomponent organic particles. Raymond, T., M. & Pandis, S., N. J. Geophys. Res.-Atmos., 2003. Paper abstract bibtex Cloud condensation nuclei (CCN) in the atmosphere are
usually composed of multiple inorganic and organic chemical
species. Determining the ability of these multicomponent particles
to activate into cloud droplets is necessary for understanding and
quantifying the effect of aerosols on cloud formation and
properties. Internally mixed, multicomponent particles as well as
particles consisting of a core coated with hexadecane were used in
the present study. Laboratory experiments were performed using
combinations of sodium chloride, ammonium sulfate, pinonic acid,
pinic acid, norpinic acid, glutamic acid, leucine, and hexadecane.
Activation diameters were determined combining a Tandem
Differential Mobility Analyzer (TDMA) with a thermal diffusion
Cloud Condensation Nucleus Counter (CCNC). Studies were performed
at supersaturations of 0.3% and 1% with dry particle diameters
ranging between 0.02 and 0.2 micrometers. The results were compared
to a theory assuming additive behavior of the constituent species.
This assumption was sufficient for the prediction of the CCN
activation diameter of the mixed particles.
C1 Carnegie Mellon Univ, Dept Chem Engn, Pittsburgh, PA 15213 USA.
Carnegie Mellon Univ, Dept Engn & Publ Policy, Pittsburgh, PA
15213 USA.
@article{
title = {Formation of cloud droplets by multicomponent organic particles},
type = {article},
year = {2003},
volume = {108},
id = {f8112b1c-770d-3e74-bee4-ad4d735e1d49},
created = {2014-10-08T16:28:18.000Z},
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last_modified = {2017-03-14T17:32:24.802Z},
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abstract = {Cloud condensation nuclei (CCN) in the atmosphere are
usually composed of multiple inorganic and organic chemical
species. Determining the ability of these multicomponent particles
to activate into cloud droplets is necessary for understanding and
quantifying the effect of aerosols on cloud formation and
properties. Internally mixed, multicomponent particles as well as
particles consisting of a core coated with hexadecane were used in
the present study. Laboratory experiments were performed using
combinations of sodium chloride, ammonium sulfate, pinonic acid,
pinic acid, norpinic acid, glutamic acid, leucine, and hexadecane.
Activation diameters were determined combining a Tandem
Differential Mobility Analyzer (TDMA) with a thermal diffusion
Cloud Condensation Nucleus Counter (CCNC). Studies were performed
at supersaturations of 0.3% and 1% with dry particle diameters
ranging between 0.02 and 0.2 micrometers. The results were compared
to a theory assuming additive behavior of the constituent species.
This assumption was sufficient for the prediction of the CCN
activation diameter of the mixed particles.
C1 Carnegie Mellon Univ, Dept Chem Engn, Pittsburgh, PA 15213 USA.
Carnegie Mellon Univ, Dept Engn & Publ Policy, Pittsburgh, PA
15213 USA.},
bibtype = {article},
author = {Raymond, T M and Pandis, S N},
journal = {J. Geophys. Res.-Atmos.}
}
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