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Multi-species nucleation rates in CLOUD

Almeida, J. and Curtius, J. and Kirkby, J. (2013) Multi-species nucleation rates in CLOUD. In: Nucleation and Atmospheric Aerosols. AIP Conference Proceedings. No.1527. American Institute of Physics , Melville, NY, pp. 326-329. ISBN 978-0-7354-1152-4.

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In the CLOUD experiment at CERN we have been investigating the chemical species that are most important to atmospheric new particle formation. Sulphuric acid plays a key role in aerosol nucleation, but other vapours and ions can strongly enhance the formation rate. Quantifying the contribution of each species and the conditions under which each one is important is a major challenge and requires sophisticated laboratory experiments. The CLOUD chamber, a 3m stainless steel aerosol chamber exposed to a pion beam from the CERN Proton Synchrotron, can create a precisely controlled atmospheric environment over a wide range of temperatures, ionisation states and gas mixtures, while keeping contamination levels extremely low. CLOUD has studied a range of vapour species at atmospheric concentrations, including, in various combinations, sulphuric acid, ammonia, dimethylamine and alpha-pinene. The effect of ions on the nucleation rates has been measured for all species since it is of considerable interest as a possible link between galactic cosmic rays and climate[1]. This work will present an overview of the nucleation rates measured in CLOUD and compare them with atmospheric observations.

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Additional Information:© 2013 AIP Publishing LLC. Published online 24 May 2013. We would like to thank CERN for supporting CLOUD with important technical and financial resources, and for providing a particle beam from the CERN Proton Synchrotron. This research has received funding from the EC Seventh Framework Programme (Marie Curie Initial Training Network "CLOUD-ITN" no. 215072, MC-ITN "CLOUD-TRAIN" no. 316662, and ERC-Advanced "ATMNUCLE” grant no. 227463), the German Federal Ministry of Education and Research (project nos. 01LK0902A and 01LK1222A), the Swiss National Science Foundation (project nos. 200020_135307 and 206620_130527), the Academy of Finland (Center of Excellence project no. 1118615), the Academy of Finland (135054, 133872, 251427, 139656, 139995, 137749, 141217, 141451), the Finnish Funding Agency for Technology and Innovation, the Nessling Foundation, the Austrian Science Fund (FWF; project no. P19546 and L593), the Portuguese Foundation for Science and Technology (project no. CERN/FP/116387/2010), the Swedish Research Council, Vetenskapsärdet (grant 2011-5120), the Presidium of the Russian Academy of Sciences and Russian Foundation for Basic Research (grants 08-02-91006-CERN and 12-02-91522-CERN), and the U.S. National Science Foundation (grants AGS1136479 and CHE1012293).
Funding AgencyGrant Number
Marie Curie Fellowship215072
Marie Curie Fellowship316662
European Research Council (ERC)227463
Bundesministerium für Bildung und Forschung (BMBF)01LK0902A
Bundesministerium für Bildung und Forschung (BMBF)01LK1222A
Swiss National Science Foundation (SNSF)200020_135307
Swiss National Science Foundation (SNSF)206620_130527
Academy of Finland1118615
Academy of Finland135054
Academy of Finland133872
Academy of Finland251427
Academy of Finland139656
Academy of Finland139995
Academy of Finland137749
Academy of Finland141217
Academy of Finland141451
Finnish Funding Agency for Technology and InnovationUNSPECIFIED
Nessling FoundationUNSPECIFIED
FWF Der WissenschaftsfondsP19546
FWF Der WissenschaftsfondsL593
Fundação para a Ciência e a Tecnologia (FCT)CERN/FP/116387/2010
Swedish Research CouncilUNSPECIFIED
Russian Academy of SciencesUNSPECIFIED
Russian Foundation for Basic Research08-02-91006-CERN
Russian Foundation for Basic Research12-02-91522-CERN
Subject Keywords:Aerosol particle nucleation, CLOUD chamber experiment, dimethylamine, alphapinene, sulphuric acid, ammonia, ions, galactic cosmic rays
Series Name:AIP Conference Proceedings
Issue or Number:1527
Classification Code:PACS: 82.60.Nh
Record Number:CaltechAUTHORS:20160421-110259719
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Official Citation:Multi-species nucleation rates in CLOUD Almeida, J. and Curtius, J. and Kirkby, J. and CLOUD Collaboration, AIP Conference Proceedings, 1527, 326-329 (2013), DOI:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:66357
Deposited By: Tony Diaz
Deposited On:21 Apr 2016 18:20
Last Modified:03 Oct 2019 09:55

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