Oxidation Products of Biogenic Emissions Contribute to Nucleation of Atmospheric Particles

Autor(en)

Francesco Riccobono, Siegfried Schobesberger, Catherine E. Scott, Josef Dommen, Ismael K. Ortega, Linda Rondo, Joao Almeida, Antonio Amorim, Federico Bianchi, Martin Breitenlechner, Andre David, Andrew Downard, Eimear M. Dunne, Jonathan Duplissy, Sebastian Ehrhart, Richard C. Flagan, Alessandro Franchin, Armin Hansel, Heikki Junninen, Maija Kajos, Helmi Keskinen, Agnieszka Kupc, Andreas Kuerten, Alexander N. Kvashin, Ari Laaksonen, Katrianne Lehtipalo, Vladimir Makhmutov, Serge Mathot, Tuomo Nieminen, Antti Onnela, Tuukka Petaja, Arnaud P. Praplan, Filipe D. Santos, Simon Schallhart, John H. Seinfeld, Mikko Sipila, Dominick V. Spracklen, Yuri Stozhkov, Frank Stratmann, Antonio Tome, Georgios Tsagkogeorgas, Petri Vaattovaara, Yrjo Viisanen, Aron Vrtala, Paul E. Wagner, Ernest Weingartner, Heike Wex, Daniela Wimmer, Kenneth S. Carslaw, Joachim Curtius, Neil M. Donahue, Jasper Kirkby, Markku Kulmala, Douglas R. Worsnop, Urs Baltensperger

Abstrakt

Atmospheric new-particle formation affects climate and is one of the least understood atmospheric aerosol processes. The complexity and variability of the atmosphere has hindered elucidation of the fundamental mechanism of new-particle formation from gaseous precursors. We show, in experiments performed with the CLOUD (Cosmics Leaving Outdoor Droplets) chamber at CERN, that sulfuric acid and oxidized organic vapors at atmospheric concentrations reproduce particle nucleation rates observed in the lower atmosphere. The experiments reveal a nucleation mechanism involving the formation of clusters containing sulfuric acid and oxidized organic molecules from the very first step. Inclusion of this mechanism in a global aerosol model yields a photochemically and biologically driven seasonal cycle of particle concentrations in the continental boundary layer, in good agreement with observations.

Organisation(en)

Aerosolphysik und Umweltphysik

Externe Organisation(en)

Universität Zürich (UZH), University of Leeds, Johann Wolfgang Goethe-Universität Frankfurt am Main, Universidade Técnica de Lisboa, Leopold-Franzens-Universität Innsbruck, European Organization for Nuclear Research (CERN), California Institute of Technology (Caltech), University of Eastern Finland, Russian Academy of Sciences, University of Helsinki, Leibniz-Institut für Troposphärenforschung, Finnish Meteorological Institute, Carnegie Mellon University, Aerodyne Res Inc, IONICON Analytik GmbH, Universidade da Beira Interior

Journal

Science

Band

344

Seiten

717-721

Anzahl der Seiten

5

ISSN

0036-8075

DOI

https://doi.org/10.1126/science.1243527

Publikationsdatum

05-2014

Peer-reviewed

Ja

ÖFOS 2012

103037 Umweltphysik, 105904 Umweltforschung

Schlagwörter

Sustainable Development Goals

SDG 13 – Maßnahmen zum Klimaschutz

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/69c0a4ac-b74c-4405-aa50-1cb2951acbe9