Global atmospheric particle formation from CERN CLOUD measurements

Eimear M. Dunne (1) , Hamish Gordon (2) , Andreas Kürten (3) , Joao Almeida (2, 3) , Jonathan Duplissy (4) , Christina Williamson (3) , Ismael K. Ortega Colomer (5, 6) , Kirsty J. Pringle (1) , Alexey Adamov (7) , Urs Baltensperger (8) , Peter Barmet (8) , François Benduhn (9) , Federico Bianchi (7) , Martin Breitenlechner (10) , Anthony Clarke (11) , Joachim Curtius (3) , Josef Dommen (8) , Neil M. Donahue (7, 12) , Sébastian Ehrhart (2, 3) , Rchard C. Flagan (13) , Alessandro Franchin (7) , Roberto Guida (1) , Jani Hakala (7) , A. Hansel (7, 10, 14) , Martin Heinritzi (3) , Tuija Jokinen (7) , Juha Kangasluoma (7, 15) , Jasper Kirkby (2, 3) , Markku Kulmala (7) , Agnieszka Kupe (16) , Michael J. Lawler (17) , Katrianne Lehtipalo (7, 8) , Vladimir Makhmutov (18) , Graham Mann (1) , Serge Mathot (2) , Joonas Merikanto (7) , Pasi Miettinen (17) , Athanasios Nenes (19, 20, 21) , Antti Onnela (2) , Alexandru Rap (1) , Carly L.S. Reddington (1) , Francesco Riccobono (8) , Nigel A.D. Richard (1) , Matti P. Rissanen (7) , Linda Rondo (3) , Nina Sarnela (7) , Siegfried Schobesberger (7) , Kamalika Sengupta (1) , Mario Simon (3) , Mikko Sipilä (7) , James N. Smith (17) , Yuri Stozkhov (18) , Antonio Tomé (22) , Jasmin Tröstl (8) , Paul E. Wagner (16) , Daniela Wimmer (3, 7) , Paul M. Winkler (16) , Douglas R. Worsnop (23, 7) , Kenneth S. Carslaw (1)

1 University of Leeds
2 CERN [Genève]
3 IAU - Institute for Atmospheric and Environmental Sciences [Frankfurt/Main]
4 HIP - Helsinki Institute of Physics
5 ONERA - The French Aerospace Lab [Palaiseau]
6 PhLAM - Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523
7 Helsingin yliopisto = Helsingfors universitet = University of Helsinki
8 LAC - Laboratory of Atmospheric Chemistry [Paul Scherrer Institute]
9 Institue for Advanced Sustainability Studies
10 Leopold Franzens University
11 University of Hawaii
12 CAPS - Center for Atmospheric Particle Studies [Pittsburgh]
13 CALTECH - California Institute of Technology
14 Institut für Ionenphysik und Angewandte Physik - Institute for Ion Physics and Applied Physics [Innsbruck]
15 Department of Physics [Helsinki]
16 Faculty of Physics [Vienna]
17 University of Eastern Finland
18 Solar and Cosmic Ray Research Laboratory [Moscow]
19 Institute for Environmental Research & Sustainable Development
20 School of Earth and Atmospheric Sciences [Atlanta]
21 ICE-HT - Institute of Chemical Engineering Sciences - Hellas [Crete]
22 CENTRA-SIM
23 Aerodyne Research Inc.

Fundamental questions remain about the origin of newly formed atmospheric aerosol particles becausedata from laboratory measurements have been insufficient to build global models. In contrast, gas-phasechemistry models have been based on laboratory kinetics measurements for decades. Here we build aglobal model of aerosol formation using extensive laboratory-measured nucleation rates involving sulfuricacid, ammonia, ions and organic compounds. The simulations and a comparison with atmosphericobservations show that nearly all nucleation throughout the present-day atmosphere involves ammonia orbiogenic 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 studiedvariations in cosmic ray intensity do not significantly affect climate via nucleation in the present-dayatmosphere.

Mots clés: CLIMATE; GLOBAL MODELING; NUCLEATION

Domaines: Milieux fluides et réactifs

Eimear M. Dunne, Hamish Gordon, Andreas Kürten, Joao Almeida, Jonathan Duplissy, et al.. Global atmospheric particle formation from CERN CLOUD measurements. Science, 2016, ⟨10.1126/science.aaf2649⟩. ⟨hal-01397769⟩