Ternary H_2SO_4-H_2O-NH_3 Neutral and Charged Nucleation Rates for a Wide Range of Atmospheric Conditions
Abstract
The formation of new particles for the ternary system involving sulfuric acid, water vapor and ammonia has been studied in detail. The nucleation rates were obtained from experiments at the CERN CLOUD chamber which allows the measurement of new particle formation under very well defined conditions. Some of its key features are the suppression of contaminants at the technological limit and a very precise control of a wide range of temperatures, trace gas concentrations and nucleation rates. The effect of ionizing radiation on the ternary nucleation rates was investigated by using the CERN proton synchrotron beam (beam conditions), natural galactic cosmic rays (gcr conditions) as well as the high voltage clearing field inside the chamber to suppress the effect of charges (neutral conditions). The dependence of the nucleation rate on ion concentration, sulfuric acid and ammonia concentration as well as temperature was studied extensively. This way, an unprecedented set of data was collected giving insight into the role of neutral and charged ternary NH_3 nucleation and the relative importance of the different parameters.
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, MCITN "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, Vetenskapsrådet (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
- Alternative title
- Ternary H2SO4-H2O-NH3 Neutral and Charged Nucleation Rates for a Wide Range of Atmospheric Conditions
- Eprint ID
- 66355
- Resolver ID
- CaltechAUTHORS:20160421-102320202
- 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
- 139656
- 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
-
2016-04-21Created 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