[P-EM11] Effects of recurrent storms: from the heliosphere to the atmosphere

[PEM11-01] Corotating interaction regions, magnetic storms, and radiation belts

★Invited Papers

*Ryuho Kataoka¹, Yoshizumi Miyoshi² (1.National Institute of Polar Research, 2.ISEE, Nagoya University)

Keywords:corotating interaction regions, magnetic storms, radiation belts

There are plenty of magnetic storms driven by corotating interaction regions during the solar cycle 24, although coronal mass ejections are playing somewhat a limited role over the weak solar cycle. More than one solar cycle has passed since some initial statistical studies of CIR/CME storms and radiation belts, including Miyoshi and Kataoka (2005) and Kataoka and Miyoshi (2006). We review the fundamental response of radiation belts associated with CIR storms during the solar cycle 23, and discuss a notable difference and/or an unexpected variation during the solar cycle 24.

References:

Kataoka, R., and Y. Miyoshi (2006), Flux enhancement of radiation belt electrons during geomagnetic storms driven by coronal mass ejections and corotating interaction regions, Space Weather, 4, S09004, doi:10.1029/2005SW000211.

Miyoshi, Y., and R. Kataoka (2005), Ring current ions and radiation belt electrons during geomagnetic storms driven by coronal mass ejections and corotating interaction regions, Geophys. Res. Lett., 32, L21105, doi:10.1029/2005GL024590.