Using Forbush Decreases to Derive the Transit Time of ICMEs Propagating from 1 AU to Mars

  title={Using Forbush Decreases to Derive the Transit Time of ICMEs Propagating from 1 AU to Mars},
  author={Johan L. Freiherr von Forstner and Jingnan Guo and Robert F. Wimmer–Schweingruber and Donald M. Hassler and Manuela Temmer and Mateja Dumbovi'c and Lan K. Jian and Jan K. Appel and Ja{\vs}a {\vC}alogovi{\'c} and Bent Ehresmann and Bernd Heber and Henning Lohf and Arik Posner and Christian T. Steigies and Bojan Vr{\vs}nak and Cary J. Zeitlin},
  journal={Journal of Geophysical Research: Space Physics},
  pages={39 - 56}
The propagation of 15 interplanetary coronal mass ejections (ICMEs) from Earth's orbit (1 AU) to Mars (∼1.5 AU) has been studied with their propagation speed estimated from both measurements and simulations. The enhancement of magnetic fields related to ICMEs and their shock fronts causes the so‐called Forbush decrease, which can be detected as a reduction of galactic cosmic rays measured on ground. We have used galactic cosmic ray (GCR) data from in situ measurements at Earth, from both STEREO… 

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