Measuring Composition & Growth of Ion Clusters of Sulfuric Acid, Ammonia, Amines & Oxidized Organics as First Steps of Nucleation in the CLOUD Experiment
- Creators
- Schobesberger, Siegfried
- Praplan, Arnaud P.
- Junninen, Heikki
- Bianchi, Federico
- Lönn, Gustaf
- Ehn, Mikael
- Lehtipalo, Katrianne
- Dommen, Josef
- Ehrhart, Sebastian
- Franchin, Alessandro
- Ortega, Ismael K.
- Riccobono, Francesco
- Duplissy, Jonathan
- Rissanen, Matti P.
- Sipilä, Mikko
- Petäjä, Tuukka
- Kulmala, Markku
- Donahue, Neil M.
- Worsnop, Douglas R.
- CLOUD Collaboration
- Others:
- DeMott, Paul J.
- ODowd, C. D.
Abstract
The mechanisms behind the nucleation of vapors forming new particles in the atmosphere had been proven difficult to establish. One main aim of the CLOUD experiment was to explore in detail these first steps of atmospheric new particle formation by performing extremely well controlled laboratory experiments. We examined nucleation and growth in the presence of different mixtures of vapors, including sulfuric acid, ammonia, dimethylamine, and oxidation products of pinanediol or α-pinene. Among the employed state-of-the-art instrumentation, a high-resolution mass spectrometer that directly sampled negatively charged ions and clusters proved particularly useful. We were able to resolve most of the chemical compositions found for charged sub-2nm clusters and to observe their growth in time. These compositions reflected the mixture of condensable vapors in the chamber and the role of each individual vapor in forming sub-2nm clusters could be explored. By inter-comparing between individual experiments and ambient observations, we try to establish which vapors participate in nucleation in the actual atmosphere, and how.
Additional Information
© 2013 AIP Publishing LLC. Published online 24 May 2013. CERN's support of CLOUD by providing technical and financial resources and a particle beam from the CERN Proton Synchrotron is gratefully acknowledged. This research has received funding from the EC Seventh Framework Programme (Marie Curie Initial Training Network "CLOUD-ITN" no. 215072, MC-ITN "CLOUDTRAIN" 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, Vetenskapsrå̊det (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).Attached Files
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Additional details
- Eprint ID
- 66392
- Resolver ID
- CaltechAUTHORS:20160422-075856839
- 215072
- Marie Curie Fellowship
- 316662
- Marie Curie Fellowship
- 227463
- European Research Council (ERC)
- 01LK0902A
- Bundesministerium für Bildung und Forschung (BMBF)
- 01LK1222A
- Bundesministerium für Bildung und Forschung (BMBF)
- 200020_135307
- Swiss National Science Foundation (SNSF)
- 206620_130527
- Swiss National Science Foundation (SNSF)
- 1118615
- Academy of Finland
- 135054
- Academy of Finland
- 133872
- Academy of Finland
- 251427
- Academy of Finland
- 139995
- Academy of Finland
- 137749
- Academy of Finland
- 141217
- Academy of Finland
- 141451
- Academy of Finland
- Finnish Funding Agency for Technology and Innovation
- Nessling Foundation
- P19546
- FWF Der Wissenschaftsfonds
- L593
- FWF Der Wissenschaftsfonds
- CERN/FP/116387/2010
- Fundação para a Ciência e a Tecnologia (FCT)
- Swedish Research Council
- 2011-5120
- Vetenskapsrådet
- Russian Academy of Sciences
- 08-02-91006-CERN
- Russian Foundation for Basic Research
- 12-02-91522-CERN
- Russian Foundation for Basic Research
- AGS1136479
- NSF
- CHE1012293
- NSF
- Created
-
2016-04-22Created from EPrint's datestamp field
- Updated
-
2021-11-10Created from EPrint's last_modified field
- Series Name
- AIP Conference Proceedings
- Series Volume or Issue Number
- 1527