ACP Atmospheric Chemistry and Physics ACP Atmos. Chem. Phys. 1680-7324 Copernicus Publications Göttingen, Germany 10.5194/acp-9-7431-2009 Corrigendum to "The role of ammonia in sulfuric acid ion induced nucleation" published in Atmos. Chem. Phys., 8, 2859–2867, 2008 Ortega I. K. ¹ Kurtén T. ¹ Vehkamäki H. ¹ Kulmala M. ¹ 1 Division of Atmospheric Sciences, Department of Physical Sciences, P.O. Box 64, 00014 University of Helsinki, Finland 06 10 2009 9 19 7431 7434 Copyright: © 2009 I. K. Ortega et al. 2009 This work is licensed under the Creative Commons Attribution 3.0 Unported License. To view a copy of this licence, visit https://creativecommons.org/licenses/by/3.0/ This article is available from https://acp.copernicus.org/articles/9/7431/2009/acp-9-7431-2009.html The full text article is available as a PDF file from https://acp.copernicus.org/articles/9/7431/2009/acp-9-7431-2009.pdf