The dynamic surface tension of atmospheric aerosol surfactants reveals new aspects of cloud activation

Nozière, Barbara, Baduel, Christine and Jaffrezo, Jean-Luc (2014) The dynamic surface tension of atmospheric aerosol surfactants reveals new aspects of cloud activation. Nature Communications, 5 3335: 1-7. doi:10.1038/ncomms4335


Author Nozière, Barbara
Baduel, Christine
Jaffrezo, Jean-Luc
Title The dynamic surface tension of atmospheric aerosol surfactants reveals new aspects of cloud activation
Journal name Nature Communications   Check publisher's open access policy
ISSN 2041-1723
Publication date 2014-02-25
Sub-type Article (original research)
DOI 10.1038/ncomms4335
Open Access Status DOI
Volume 5
Issue 3335
Start page 1
End page 7
Total pages 7
Place of publication London, United Kingdom
Publisher Nature Publishing Group
Collection year 2015
Language eng
Formatted abstract
The activation of aerosol particles into cloud droplets in the Earth's atmosphere is both a key process for the climate budget and a main source of uncertainty. Its investigation is facing major experimental challenges, as no technique can measure the main driving parameters, the Raoult's term and surface tension, σ, for sub-micron atmospheric particles. In addition, the surfactant fraction of atmospheric aerosols could not be isolated until recently. Here we present the first dynamic investigation of the total surfactant fraction of atmospheric aerosols, evidencing adsorption barriers that limit their gradient (partitioning) in particles and should enhance their cloud-forming efficiency compared with current models. The results also show that the equilibration time of surfactants in sub-micron atmospheric particles should be beyond the detection of most on-line instruments. Such instrumental and theoretical shortcomings would be consistent with atmospheric and laboratory observations and could have limited the understanding of cloud activation until now.
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2015 Collection
National Research Centre for Environmental Toxicology Publications
 
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Citation counts: TR Web of Science Citation Count  Cited 16 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 16 times in Scopus Article | Citations
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Created: Tue, 11 Mar 2014, 00:39:24 EST by System User on behalf of National Res Centre For Environmental Toxicology