1. British Antarctic Survey; Natural Environment Research Council; Cambridge UK
2. Department of Physics; University of Otago; Dunedin New Zealand
3. Sodankylä Geophysical Observatory; University of Oulu; Sodankylä Finland
4. Earth Observation; Finnish Meteorological Institute; Helsinki Finland
5. Space Weather Prediction Center; NOAA; Boulder Colorado USA
6. Centre d'Etude Spatiale des Rayonnements; Toulouse France
7. Laboratoire de Physique et Chimie de l'Environnement et de l'Espace; Orleans France