Aerosol particles found in the lower confines of the atmosphere are typically internal mixtures of sulfate, inorganic salts, refractory components, and organic species. The effect these complex combinations have on cloud formation processes remains largely unknown. We have conducted two complementary studies on one important process, the homogeneous formation of ice by small particles. In the first study the freezing of atmospheric aerosol was induced using controlled temperature and humidity conditions. In the second study the chemical composition of the residue from ice crystals in high altitude clouds was analyzed. Here we show that organic components do not partition equally to the ice and aqueous phases. Instead, organic-rich particles preferentially remain unfrozen. These results suggest that emissions of organic species have the potential to influence aerosol-cold cloud interactions and climate.
Cziczo, D. J.
NOAA, Aeron Lab, 325 Broadway,R-AL6, Boulder, CO 80303 USA
NOAA, Aeron Lab, Boulder, CO 80303 USA
Univ Colorado, Cooperat Inst Res Environm Sci, Boulder, CO 80309 USA
Colorado State Univ, Dept Atmospher Sci, Ft Collins, CO 80523 USA
Univ Nacl Autonoma Mexico, Ctr Ciencias Atmosfera, Mexico City 04510, DF, Mexico
Univ Denver, Dept Engn, Denver, CO 80208 USA
%0 Journal Article
%1 Cziczo:2004p497
%A Cziczo, D
%A DeMott, P
%A Brooks, S
%A Prenni, A
%A Thomson, D
%A Baumgardner, D
%A Wilson, J
%A Kreidenweis, S
%A Murphy, Daniel M
%D 2004
%J Geophysical Research Letters
%K imported
%N 12
%P --
%T Observations of organic species and atmospheric ice formation
%U http://links.isiglobalnet2.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=mekentosj&SrcApp=Papers&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000222779500002
%V 31
%X Aerosol particles found in the lower confines of the atmosphere are typically internal mixtures of sulfate, inorganic salts, refractory components, and organic species. The effect these complex combinations have on cloud formation processes remains largely unknown. We have conducted two complementary studies on one important process, the homogeneous formation of ice by small particles. In the first study the freezing of atmospheric aerosol was induced using controlled temperature and humidity conditions. In the second study the chemical composition of the residue from ice crystals in high altitude clouds was analyzed. Here we show that organic components do not partition equally to the ice and aqueous phases. Instead, organic-rich particles preferentially remain unfrozen. These results suggest that emissions of organic species have the potential to influence aerosol-cold cloud interactions and climate.
%Z Times Cited: 3
Article
English
Cited References Count: 22
839jg
@article{Cziczo:2004p497,
abstract = {Aerosol particles found in the lower confines of the atmosphere are typically internal mixtures of sulfate, inorganic salts, refractory components, and organic species. The effect these complex combinations have on cloud formation processes remains largely unknown. We have conducted two complementary studies on one important process, the homogeneous formation of ice by small particles. In the first study the freezing of atmospheric aerosol was induced using controlled temperature and humidity conditions. In the second study the chemical composition of the residue from ice crystals in high altitude clouds was analyzed. Here we show that organic components do not partition equally to the ice and aqueous phases. Instead, organic-rich particles preferentially remain unfrozen. These results suggest that emissions of organic species have the potential to influence aerosol-cold cloud interactions and climate.},
added-at = {2010-06-22T19:38:37.000+0200},
affiliation = {Cziczo, D. J.
NOAA, Aeron Lab, 325 Broadway,R-AL6, Boulder, CO 80303 USA
NOAA, Aeron Lab, Boulder, CO 80303 USA
Univ Colorado, Cooperat Inst Res Environm Sci, Boulder, CO 80309 USA
Colorado State Univ, Dept Atmospher Sci, Ft Collins, CO 80523 USA
Univ Nacl Autonoma Mexico, Ctr Ciencias Atmosfera, Mexico City 04510, DF, Mexico
Univ Denver, Dept Engn, Denver, CO 80208 USA},
annote = {Times Cited: 3
Article
English
Cited References Count: 22
839jg},
author = {Cziczo, D and DeMott, P and Brooks, S and Prenni, A and Thomson, D and Baumgardner, D and Wilson, J and Kreidenweis, S and Murphy, Daniel M},
biburl = {https://www.bibsonomy.org/bibtex/261f8213c94e4aaa64d5a56c51a63f77b/gsmith},
date-added = {2010-03-10 16:47:15 -0500},
date-modified = {2010-05-25 14:49:43 -0400},
interhash = {aaad6ea821e62d958ed3fea226b997ab},
intrahash = {61f8213c94e4aaa64d5a56c51a63f77b},
journal = {Geophysical Research Letters},
keywords = {imported},
label = {rec-number 768},
local-url = {file://localhost/Users/geoffreysmith/Documents/Papers/Geophysical%20Research%20Letters/2004/Geophysical%20Research%20Letters,%2031,%20-%202004.pdf},
month = Jun,
number = 12,
pages = {--},
pmid = {000222779500002},
rating = {0},
timestamp = {2010-06-22T19:38:54.000+0200},
title = {Observations of organic species and atmospheric ice formation},
uri = {papers://E88B624E-D406-46FF-9D95-BB9C1AAE3FDC/Paper/p497},
url = {http://links.isiglobalnet2.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=mekentosj&SrcApp=Papers&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000222779500002},
volume = 31,
year = 2004
}