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Size Matters More Than Chemistry for Cloud-Nucleating Ability of Aerosol Particles

Dusek, U. and Frank, G. P. and Hildebrandt, L. and Curtius, J. and Schneider, J. and Walter, S. and Chand, D. and Drewnick, F. and Hings, S. and Jung, D. and Borrmann, S. and Andreae, M. O. (2006) Size Matters More Than Chemistry for Cloud-Nucleating Ability of Aerosol Particles. Science, 312 (5778). pp. 1375-1378. ISSN 0036-8075. https://resolver.caltech.edu/CaltechAUTHORS:20141119-104826616

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Abstract

Size-resolved cloud condensation nuclei (CCN) spectra measured for various aerosol types at a non-urban site in Germany showed that CCN concentrations are mainly determined by the aerosol number size distribution. Distinct variations of CCN activation with particle chemical composition were observed but played a secondary role. When the temporal variation of chemical effects on CCN activation is neglected, variation in the size distribution alone explains 84 to 96% of the variation in CCN concentrations. Understanding that particles' ability to act as CCN is largely controlled by aerosol size rather than composition greatly facilitates the treatment of aerosol effects on cloud physics in regional and global models.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1126/science.1125261DOIArticle
http://www.sciencemag.org/content/312/5778/1375PublisherArticle
http://www.sciencemag.org/content/312/5778/1375/suppl/DC1PublisherSupporting Online Material
ORCID:
AuthorORCID
Andreae, M. O.0000-0003-1968-7925
Additional Information:© 2006 American Association for the Advancement of Science. Received 23 January 2006; accepted 14 April 2006. We thank H. Bingemer from the University of Frankfurt and the Taunus Observatory team for their help, B. Fay from the German Weather Service for providing trajectory analysis data, and H. Wernli for help with the trajectory interpretation. The Max Planck Society and the University of Mainz are acknowledged for funding the FACE-2004 measurement campaign. We thank the University of Frankfurt for access to the facilities at the Taunus Observatory for the duration of the FACE-2004 campaign. We thank D. Rosenfeld and Z. Levin for valuable comments on the manuscript.
Funders:
Funding AgencyGrant Number
Max Planck SocietyUNSPECIFIED
University of MainzUNSPECIFIED
Issue or Number:5778
Record Number:CaltechAUTHORS:20141119-104826616
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20141119-104826616
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:51958
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:19 Nov 2014 23:29
Last Modified:03 Oct 2019 07:37

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