Climatology of Pi2 pulsations deduced from the Wp index
Published in Journal of Geophysical Research: Space Physics, 2025
The seasonal and universal-time (UT) variations of the Pi2 occurrence rate are examined by analyzing the Wp index
The results show that the seasonal and UT variations of Pi2 pulsations are mostly controlled by the equinoctial effect
An analysis with a machine-learning-based model shows that the Russell-McPherron and axial effects hardly affect the Pi2 occurrence rate
Recommended citation: Nakano, S., Kataoka, R., and Nose (2025). "Climatology of Pi2 pulsations deduced from the Wp index" Journal of Geophysical Research: Space Physics, 130, e2025JA034345. https://doi.org/10.1029/2025JA034345