Multicomponent new particle formation from sulfuric acid, ammonia, and biogenic vapors

Katrianne Lehtipalo, Chao Yan, Lubna Dada, Federico Bianchi, Mao Xiao, Robert Wagner, Dominik Stolzenburg, Lauri R. Ahonen, Antonio Amorim, Andrea Baccarini, Paulus S. Bauer, Bernhard Baumgartner, Anton Bergen, Anne Kathrin Bernhammer, Martin Breitenlechner, Sophia Brilke, Angela Buchholz, Stephany Buenrostro Mazon, Dexian Chen, Xuemeng ChenAntonio Dias, Josef Dommen, Danielle C. Draper, Jonathan Duplissy, Mikael Ehn, Henning Finkenzeller, Lukas Fischer, Carla Frege, Claudia Fuchs, Olga Garmash, Hamish Gordon, Jani Hakala, Xucheng He, Liine Heikkinen, Martin Heinritzi, Johanna C. Helm, Victoria Hofbauer, Christopher R. Hoyle, Tuija Jokinen, Juha Kangasluoma, Veli Matti Kerminen, Changhyuk Kim, Jasper Kirkby, Jenni Kontkanen, Andreas Kürten, Michael J. Lawler, Huajun Mai, Serge Mathot, Tuomo Nieminen, Annele Virtanen, Matti Rissanen

Research output: Contribution to journalArticleScientificpeer-review

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Abstract

A major fraction of atmospheric aerosol particles, which affect both air quality and climate, form from gaseous precursors in the atmosphere. Highly oxygenated organic molecules (HOMs), formed by oxidation of biogenic volatile organic compounds, are known to participate in particle formation and growth. However, it is not well understood how they interact with atmospheric pollutants, such as nitrogen oxides (NOx) and sulfur oxides (SOx) from fossil fuel combustion, as well as ammonia (NH3) from livestock and fertilizers. Here, we show how NOx suppresses particle formation, while HOMs, sulfuric acid, and NH3 have a synergistic enhancing effect on particle formation. We postulate a novel mechanism, involving HOMs, sulfuric acid, and ammonia, which is able to closely reproduce observations of particle formation and growth in daytime boreal forest and similar environments. The findings elucidate the complex interactions between biogenic and anthropogenic vapors in the atmospheric aerosol system.

Original languageEnglish
Article numbereaau5363
JournalScience Advances
Volume4
Issue number12
DOIs
Publication statusPublished - 12 Dec 2018
Publication typeA1 Journal article-refereed

Publication forum classification

  • Publication forum level 1

ASJC Scopus subject areas

  • General

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