Iodine oxoacids enhance nucleation of sulfuric acid particles in the atmosphere

Autor(en)

Xu Cheng He, Mario Simon, Siddharth Iyer, Hong Bin Xie, Birte Rörup, Jiali Shen, Henning Finkenzeller, Dominik Stolzenburg, Rongjie Zhang, Andrea Baccarini, Yee Jun Tham, Mingyi Wang, Stavros Amanatidis, Ana A. Piedehierro, Antonio Amorim, Rima Baalbaki, Zoé Brasseur, Lucía Caudillo, Biwu Chu, Lubna Dada, Jonathan Duplissy, Imad El Haddad, Richard C. Flagan, Manuel Granzin, Armin Hansel, Martin Heinritzi, Victoria Hofbauer, Tuija Jokinen, Deniz Kemppainen, Weimeng Kong, Jordan Krechmer, Andreas Kürten, Houssni Lamkaddam, Brandon Lopez, Fangfang Ma, Naser G.A. Mahfouz, Vladimir Makhmutov, Hanna E. Manninen, Guillaume Marie, Ruby Marten, Dario Massabò, Roy L. Mauldin, Bernhard Mentler, Antti Onnela, Tuukka Petäjä, Joschka Pfeifer, Maxim Philippov, Ananth Ranjithkumar, Matti P. Rissanen, Siegfried Schobesberger, Wiebke Scholz, Benjamin Schulze, Mihnea Surdu, Roseline C. Thakur, António Tomé, Andrea C. Wagner, Dongyu Wang, Yonghong Wang, Stefan K. Weber, André Welti, Paul M. Winkler, Marcel Zauner-Wieczorek, Urs Baltensperger, Joachim Curtius, Theo Kurtén, Douglas R. Worsnop, Rainer Volkamer, Katrianne Lehtipalo, Jasper Kirkby, Neil M. Donahue, Mikko Sipilä, Markku Kulmala

Abstrakt

The main nucleating vapor in the atmosphere is thought to be sulfuric acid (H₂SO₄), stabilized by ammonia (NH₃). However, in marine and polar regions, NH₃ is generally low, and H₂SO₄ is frequently found together with iodine oxoacids [HIO_x, i.e., iodic acid (HIO₃) and iodous acid (HIO₂)]. In experiments performed with the CERN CLOUD (Cosmics Leaving OUtdoor Droplets) chamber, we investigated the interplay of H₂SO₄ and HIO_x during atmospheric particle nucleation. We found that HIO_x greatly enhances H₂SO₄(-NH₃) nucleation through two different interactions. First, HIO₃ strongly binds with H₂SO₄ in charged clusters so they drive particle nucleation synergistically. Second, HIO₂ substitutes for NH₃, forming strongly bound H₂SO₄-HIO₂ acid-base pairs in molecular clusters. Global observations imply that HIO_x is enhancing H₂SO₄(-NH₃) nucleation rates 10- to 10,000-fold in marine and polar regions.

Organisation(en)

Aerosolphysik und Umweltphysik

Externe Organisation(en)

University of Helsinki, Carnegie Mellon University, Finnish Meteorological Institute, Johann Wolfgang Goethe-Universität Frankfurt am Main, University of Tampere, Dalian University of Technology, University of Colorado, Boulder, Technische Universität Wien, Paul Scherrer Institute, École polytechnique fédérale de Lausanne, Sun Yat-sen University, California Institute of Technology (Caltech), Universidade de Lisboa, Chinese Academy of Sciences (CAS), Leopold-Franzens-Universität Innsbruck, The Cyprus Institute, Aerodyne Res Inc, Russian Academy of Sciences, Moscow Institute of Physics and Technology, European Organization for Nuclear Research (CERN), Università degli Studi di Genova, British Antarctic Survey, University of Eastern Finland, Universidade da Beira Interior, Nanjing University, Peking University

Journal

Science

Band

382

Seiten

1308-1314

Anzahl der Seiten

7

ISSN

0036-8075

DOI

https://doi.org/10.1126/science.adh2526

Publikationsdatum

12-2023

Peer-reviewed

Ja

ÖFOS 2012

103039 Aerosolphysik, 103037 Umweltphysik, 105208 Atmosphärenchemie

ASJC Scopus Sachgebiete

General

Sustainable Development Goals

SDG 14 – Leben unter Wasser

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/46130bd9-0f37-425d-8bee-30a5e0ea3e54