Ionosphere-atmosphere interaction during solar proton events

• Main Author: Verronen, Pekka
• Other Authors: Aylward, Alan, University of Helsinki, Faculty of Science, Department of Physical Sciences, Finnish Meteorological Institute, Helsingin yliopisto, matemaattis-luonnontieteellinen tiedekunta, fysikaalisten tieteiden laitos, Helsingfors universitet, matematisk-naturvetenskapliga fakulteten, institutionen för fysikaliska vetenskaper, Kyrölä, Erkki, Turunen, Esa
• Format: Doctoral or Postdoctoral Thesis
• Language: English
• Published: Helsingin yliopisto 2010
• Subjects: fysiikka; Sodankylä
• Online Access: http://hdl.handle.net/10138/23151

Among the most striking natural phenomena affecting ozone are solar proton events (SPE), during which high-energy protons precipitate into the middle atmosphere in the polar regions. Ionisation caused by the protons results in changes in the lower ionosphere, and in production of neutral odd nitroge...