Atmospheric Chemistry and Physics www.atmos-chem-phys.net 1680-7316 1680-7324 8 14 2008 10.5194/acp-8-3805-2008 http://www.atmos-chem-phys.net/8/3805/2008/ http://www.atmos-chem-phys.net/8/3805/2008/acp-8-3805-2008.html http://www.atmos-chem-phys.net/8/3805/2008/acp-8-3805-2008.pdf 3805 3815 2008-07-17 Enhancement of N₂O during the October–November 2003 solar proton events B. Funke M. García-Comas M. López-Puertas puertas@iaa.es N. Glatthor G. P. Stiller T. von Clarmann K. Semeniuk J. C. McConnell Instituto de Astrofísica de Andalucía, CSIC, Granada, Spain Forschungszentrum Karlsruhe und Universität Karlsruhe, Institut für Meteorologie und Klimaforschung, Karlsruhe, Germany Department of Earth and Space Science and Engineering, York University, Toronto, Ontario, Canada In this paper we present evidence of enhanced N₂O concentrations in the upper stratosphere/lower mesosphere polar regions after the solar proton events that occurred during October–November 2003. 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