Ion-induced nucleation of pure biogenic particles

Autor(en)

Jasper Kirkby, Jonathan Duplissy, Kamalika Sengupta, Carla Frege, Hamish Gordon, Christina Williamson, Martin Heinritzi, Mario Simon, Chao Yan, Joao Almeida, Jasmin Troestl, Tuomo Nieminen, Ismael K. Ortega, Robert Wagner, Alexey Adamov, Antonio Amorim, Anne-Kathrin Bernhammer, Federico Bianchi, Martin Breitenlechner, Sophia Brilke, Xuemeng Chen, Jill Craven, Antonio Dias, Sebastian Ehrhart, Richard C. Flagan, Alessandro Franchin, Claudia Fuchs, Roberto Guida, Jani Hakala, Christopher R. Hoyle, Tuija Jokinen, Heikki Junninen, Juha Kangasluoma, Jaeseok Kim, Manuel Krapf, Andreas Kuerten, Ari Laaksonen, Katrianne Lehtipalo, Vladimir Makhmutov, Serge Mathot, Ugo Molteni, Antti Onnela, Otso Peraekylae, Felix Piel, Tuukka Petaejae, Arnaud P. Praplan, Kirsty Pringle, Alexandru Rap, Nigel A. D. Richards, Ilona Riipinen, Matti P. Rissanen, Linda Rondo, Nina Sarnela, Siegfried Schobesberger, Catherine E. Scott, John H. Seinfeld, Mikko Sipilae, Gerhard Steiner, Yuri Stozhkov, Frank Stratmann, Antonio Tome, Annele Virtanen, Alexander L. Vogel, Andrea C. Wagner, Paul E. Wagner, Ernest Weingartner, Daniela Wimmer, Paul M. Winkler, Penglin Ye, Xuan Zhang, Armin Hansel, Josef Dommen, Neil M. Donahue, Douglas R. Worsnop, Urs Baltensperger, Markku Kulmala, Kenneth S. Carslaw, Joachim Curtius

Abstrakt

Atmospheric aerosols and their effect on clouds are thought to be important for anthropogenic radiative forcing of the climate, yet remain poorly understood. Globally, around half of cloud condensation nuclei originate from nucleation of atmospheric vapours. It is thought that sulfuric acid is essential to initiate most particle formation in the atmosphere, and that ions have a relatively minor role. Some laboratory studies, however, have reported organic particle formation without the intentional addition of sulfuric acid, although contamination could not be excluded. Here we present evidence for the formation of aerosol particles from highly oxidized biogenic vapours in the absence of sulfuric acid in a large chamber under atmospheric conditions. The highly oxygenated molecules (HOMs) are produced by ozonolysis of α-pinene. We find that ions from Galactic cosmic rays increase the nucleation rate by one to two orders of magnitude compared with neutral nucleation. Our experimental findings are supported by quantum chemical calculations of the cluster binding energies of representative HOMs. Ion-induced nucleation of pure organic particles constitutes a potentially widespread source of aerosol particles in terrestrial environments with low sulfuric acid pollution.

Organisation(en)

Aerosolphysik und Umweltphysik

Externe Organisation(en)

Johann Wolfgang Goethe-Universität Frankfurt am Main, European Organization for Nuclear Research (CERN), University of Helsinki, University of Leeds, Paul Scherrer Institute, University of Colorado, Boulder, Leopold-Franzens-Universität Innsbruck, ONERA-The French Aerospac Lab., Universidade de Lisboa, IONICON Analytik GmbH, Eidgenössische Technische Hochschule Zürich, California Institute of Technology (Caltech), Eidgenössische Forschungsanstalt für Wald, Schnee und Landschaft, University of Eastern Finland, Korea Institute of Ocean Science & Technology (KIOST), Finnish Meteorological Institute, Stockholm University, University of Washington, Leibniz-Institut für Troposphärenforschung, Universidade da Beira Interior, Carnegie Mellon University, Aerodyne Res Inc, Lebedev Physical Institute, Russian Academy of Sciences

Journal

Nature

Band

533

Seiten

521-526

Anzahl der Seiten

6

ISSN

0028-0836

DOI

https://doi.org/10.1038/nature17953

Publikationsdatum

05-2016

Peer-reviewed

Ja

ÖFOS 2012

103039 Aerosolphysik, 105206 Meteorologie

Schlagwörter

Sustainable Development Goals

SDG 13 – Maßnahmen zum Klimaschutz

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/bb1d299d-6feb-4155-97db-cdf11a1e642c