摘要：Acknowledgments ACE solar wind data used in this study were provided by the CDAWeb (http://cdaweb.gsfc.nasa.gov/). The authors would like to thank the staff of the WDC for Geomagnetism, Kyoto University (http://wdc.kugi.kyoto-u.ac.jp/) for making the AE and Dst “provisional” values available very quickly. This work was supported by JSPS KAKENHI grant 23340045.
