Stuttgart 2012 – scientific programme
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EP: Fachverband Extraterrestrische Physik
EP 14: Poster Sonne und Heliosphäre
EP 14.8: Poster
Wednesday, March 14, 2012, 16:30–19:00, Poster.V
Neutron monitor measurements of the cosmic ray maximum at the end of solar cycle 23 — •Christian Steigies1, Karl-Ludwig Klein2, Nicolas Fuller2, and Rolf Bütikofer3 — 1Christian-Albrechts-Universität zu Kiel, Germany — 2Observatoire de Paris, France — 3University of Bern, Switzerland
During the unusually long solar minimum at the end of solar cycle 23 the cosmic ray intensities as measured by several ground-based neutron monitor stations reached record intensities. In this presentation we study the long term evolution of neutron monitor data which is made available via the neutron monitor database (www.NMDB.eu). NMDB currently holds real-time data and historical data from neutron monitors in Europe and several other countries. This study takes into account the variation of cutoff rigidities at the different stations and possible other effects such as a change of the barometric coefficients for the pressure correction of neutron monitor data.