1. Centre for Research in Earth and Space Science (CRESS); York University; Toronto, Ontario Canada
2. Department of Physics and Physics Engineering; University of Saskatchewan; Saskatoon, SK Canada
3. Department of Physics; Trent University; Peterborough, Ontario Canada
4. Finnish Meteorological Institute; Helsinki Finland
5. ARQX, Meteorological Services of Canada; Toronto, Ontario Canada
6. IPSL-Service d'Aéronomie; CNRS-Université Paris 6; Paris cedex 5 France
7. Chalmers University of Technology; Department of Radio and Space Science; Göteborg Sweden
8. Department of Physics; University of Toronto; Toronto, Ontario Canada