Sebastian Ehrhart, Luisa Ickes, Joao Almeida, Antonio Amorim, Peter Barmet, Federico Bianchi, Josef Dommen, Eimear M. Dunne, Jonathan Duplissy, Alessandro Franchin, Juha Kangasluoma, Jasper Kirkby, Christoph Andreas Kürten, Agnieszka Kupc, Katrianne Lehtipalo, Tuomo Nieminen, Francesco Riccobono, Linda Rondo, Siegfried Schobesberger, Gerhard Steiner, Antonio Tomé, Daniela Wimmer, Urs Baltensperger, Paul E. Wagner, Joachim Curtius
- Binary nucleation of sulphuric acid-water particles is expected to be an important process in the free troposphere at low temperatures. SAWNUC (Sulphuric Acid Water Nucleation) is a model of binary nucleation that is based on laboratory measurements of the binding energies of sulphuric acid and water in charged and neutral clusters. Predictions of SAWNUC are compared for the first time comprehensively with experimental binary nucleation data from the CLOUD chamber at European Organization for Nuclear Research. The experimental measurements span a temperature range of 208–292 K, sulphuric acid concentrations from 1·106 to 1·109 cm−3, and distinguish between ion-induced and neutral nucleation. Good agreement, within a factor of 5, is found between the experimental and modeled formation rates for ion-induced nucleation at 278 K and below and for neutral nucleation at 208 and 223 K. Differences at warm temperatures are attributed to ammonia contamination which was indicated by the presence of ammonia-sulphuric acid clusters, detected by an Atmospheric Pressure Interface Time of Flight (APi-TOF) mass spectrometer. APi-TOF measurements of the sulphuric acid ion cluster distributions (math formula with i = 0, 1, ..., 10) show qualitative agreement with the SAWNUC ion cluster distributions. Remaining differences between the measured and modeled distributions are most likely due to fragmentation in the APi-TOF. The CLOUD results are in good agreement with previously measured cluster binding energies and show the SAWNUC model to be a good representation of ion-induced and neutral binary nucleation of sulphuric acid-water clusters in the middle and upper troposphere.
MetadatenAuthor: | Sebastian Ehrhart, Luisa Ickes, Joao Almeida, Antonio AmorimORCiD, Peter Barmet, Federico BianchiORCiDGND, Josef Dommen, Eimear M. Dunne, Jonathan DuplissyORCiD, Alessandro Franchin, Juha Kangasluoma, Jasper KirkbyORCiD, Christoph Andreas KürtenORCiDGND, Agnieszka Kupc, Katrianne LehtipaloORCiDGND, Tuomo Nieminen, Francesco Riccobono, Linda Rondo, Siegfried SchobesbergerORCiDGND, Gerhard Steiner, Antonio Tomé, Daniela WimmerORCiDGND, Urs BaltenspergerORCiDGND, Paul E. Wagner, Joachim CurtiusORCiD |
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URN: | urn:nbn:de:hebis:30:3-450447 |
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DOI: | https://doi.org/10.1002/2015JD023723 |
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ISSN: | 2169-8996 |
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ISSN: | 2169-897X |
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Pubmed Id: | https://pubmed.ncbi.nlm.nih.gov/28239533 |
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Parent Title (English): | Journal of geophysical research. D, Atmospheres |
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Publisher: | Wiley |
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Place of publication: | Hoboken, NJ |
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Document Type: | Article |
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Language: | English |
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Date of Publication (online): | 2017/11/14 |
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Year of first Publication: | 2016 |
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Publishing Institution: | Universitätsbibliothek Johann Christian Senckenberg |
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Release Date: | 2017/11/14 |
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Tag: | binary nucleation; ion‐induced nucleation |
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Volume: | 121 |
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Issue: | 20 |
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Page Number: | 14 |
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First Page: | 12,401 |
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Last Page: | 12,414 |
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Note: | ©2016. The Authors. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
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HeBIS-PPN: | 427970660 |
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Institutes: | Geowissenschaften / Geographie / Geowissenschaften |
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Dewey Decimal Classification: | 5 Naturwissenschaften und Mathematik / 55 Geowissenschaften, Geologie / 550 Geowissenschaften |
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Sammlungen: | Universitätspublikationen |
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Licence (German): | Creative Commons - Namensnennung 4.0 |
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