Global atmospheric particle formation from CERN CLOUD measurements

Abstract

Fundamental questions remain about the origin of newly formed atmospheric aerosol particles because data from laboratory measurements have been insufficient to build global models. In contrast, gas-phase chemistry models have been based on laboratory kinetics measurements for decades. Here we build a global model of aerosol formation using extensive laboratory-measured nucleation rates involving sulfuric acid, ammonia, ions and organic compounds. The simulations and a comparison with atmospheric observations show that nearly all nucleation throughout the present-day atmosphere involves ammonia or biogenic organic compounds in addition to sulfuric acid. A significant fraction of nucleation involves ions, but the relatively weak dependence on ion concentrations indicates that for the processes studied variations in cosmic ray intensity do not significantly affect climate via nucleation in the present-day atmosphere.

Metadata

Item Type:	Article
Authors/Creators:	Dunne, EM Gordon, H https://orcid.org/0000-0002-1822-3224 Kürten, A Almeida, J Duplissy, J Williamson, C Ortega, IK Pringle, KJ https://orcid.org/0000-0003-2190-5258 Adamov, A Baltensperger, U Barmet, P Benduhn, F Bianchi, F Breitenlechner, M Clarke, A Curtius, J Dommen, J Donahue, NM Ehrhart, S Flagan, RC Franchin, A Guida, R Hakala, J Hansel, A Heinritzi, M Jokinen, T Kangasluoma, J Kirkby, J Kulmala, M Kupc, A Lawler, MJ Lehtipalo, K Makhmutov, V Mann, G Mathot, S Merikanto, J Miettinen, P Nenes, A Onnela, A Rap, A https://orcid.org/0000-0002-2319-6769 Reddington, CL https://orcid.org/0000-0002-5990-4966 Riccobono, F Richards, NA Rissanen, MP Rondo, L Sarnela, N Schobesberger, S Sengupta, K Simon, M Sipilä, M Smith, JN Stozkhov, Y Tomé, A Tröstl, J Wagner, PE Wimmer, D Winkler, PM Worsnop, DR Carslaw, KS https://orcid.org/0000-0002-6800-154X
Copyright, Publisher and Additional Information:	© The Authors 2016. This is the author’s version of the work. It is posted here by permission of the AAAS for personal use, not for redistribution. The definitive version was published in Science, Vol. 354, Issue 6316, pp. 1119-1124, DOI: 10.1126/science.aaf2649.
Dates:	Published: 2 December 2016 Published (online): 27 October 2016 Accepted: 12 October 2016
Institution:	The University of Leeds
Academic Units:	The University of Leeds > Faculty of Environment (Leeds) > School of Earth and Environment (Leeds) > Inst for Climate & Atmos Science (ICAS) (Leeds)
Depositing User:	Symplectic Publications
Date Deposited:	11 Nov 2016 14:40
Last Modified:	01 Oct 2020 15:07
Published Version:	https://doi.org/10.1126/science.aaf2649
Status:	Published
Publisher:	American Association for the Advancement of Science
Identification Number:	10.1126/science.aaf2649
Related URLs:	Author
Open Archives Initiative ID (OAI ID):	oai:eprints.whiterose.ac.uk:107269

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Global atmospheric particle formation from CERN CLOUD measurements

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