Abe, S., Umemura, N., Koyama, Y., Tanaka, Y.-M., Yagi, M., Yatagai, A. et al. (2014) Progress of the IUGONET system - metadata database for upper atmosphere ground-based observation data. Earth, Planets and Space, 66, 133. https://doi. org/10.1186/1880-5981-66-133
Angelopoulos, V., Cruce, P., Drozdov, A., Grimes, E.W., Hatzigeorgiu, N., King, D.A. et al. (2019) The space physics environment data analysis system (SPEDAS). Space Science Reviews, 215, 9. https://doi.org/10.1007/s11214-018-0576-4
Davis, T.N. & Sugiura, M. (1966) Auroral electrojet activity index AE and its universal time variations. Journal of Geophysical Research, 71, 785–801. https://doi.org/10.1029/JZ071i003p00785
Fukao, S., Hashiguchi, H., Yamamoto, M., Tsuda, T., Nakamura, T., Yamamoto, M.K. et al. (2003) The equatorial atmosphere radar (EAR): system description and first results. Radio Science, 38, 3. https://doi.org/10.1029/2002RS002767
Hayashi, H., Koyama, Y., Hori, T., Tanaka, Y., Abe, S., Shinbori, A. et al. (2013) Inter-university Upper Atmosphere Global Observation Network (IUGONET). Data Science Journal, 12, WDS179–WDS184. https://doi.org/10.2481/dsj.WDS-030
Ishii, T.T., Kawate, T., Nakatani, Y., Morita, S., Ichimoto, K. & Masuda, S. (2013) High-speed imaging system for solar-flare research at Hida observatory. Publications of the Astronomical Society of Japan, 65(2), 39. https://doi.org/10.1093/pasj/65.2.39
Iyemori, T., Takeda, M., Nosé, M., Odagi Y., Toh, H. (2010) Midlatitude geomagnetic indices ASY and SYM for 2009 (provisional). Internal Report of Data Analysis Center for Geomagnetism and Space Magnetism, Kyoto University, Japan.
Kato, S., Ogawa, T., Tsuda, T., Sato, T., Kimura, I. & Fukao, S. (1984) The middle and upper atmosphere radar: first results using a partial system. Radio Science, 19(6), 1475–1484. https://doi. org/10.1029/RS019i006p01475
King, T., Thieman, J. & Roberts, D.A. (2010) SPASE 2.0: a standard data model for space physics. Earth Science Infomatics, 3, 67– 73. https://doi.org/10.1007/s12145-010-0053-4
Miyoshi, Y., Ono, T., Takashima, T., Asamura, K., Hirahara, M., Kasaba, Y., Matsuoka, A., Kojima, H., Shiokawa, K., Seki, K., Fujimoto, M., Nagatsuma, T., Cheng, C.Z., Kazama, Y., Kasahara, S., Mitani, T., Matsumoto, H., Higashio, N., Kumamoto, A., Yagitani, S., Kasahara, Y., Ishisaka, K., Blomberg, L., Fujimoto, A., Katoh, Y., Ebihara, Y., Omura, Y., Nosé, M., Hori, T., Miyashita, Y., wTanaka, Y., Segawa, T., ERG working group. (2012) The Energization and Radiation in Geospace (ERG) Project. Dynamics of the Earth's Radiation Belts and Inner Magnetosphere, Geophys. Monograph Series, 199, 103–116, edited by D. Summers, I.R. Mann, D.N. Baker, M.
Schulz, AGU, Washington, D.C. https://doi.org/10.1029/2012B K001304
Sugiura, M. (1964) Hourly values of equatorial Dst for the IGY. Annals of the International Geophysical Year, 35, 9–45.
Tanaka, Y.-M., Shinbori, A., Hori, T., Koyama, Y., Abe, S., Umemura, N. et al. (2013) Analysis software for upper atmospheric data developed by the IUGONET project and its application to polar science. Advances in Polar Science, 24(4), 231–240. https://doi. org/10.3724/SP.J.1085.2013.00231
Tsuda, T., Lin, X., Hayashi, H. & Noersomadi. (2011) Analysis of vertical wave number spectrum of atmospheric gravity waves in the stratosphere using COSMIC GPS radio occultation data. Atmospheric Measurement Techniques, 4, 1627–1636. https:// doi.org/10.5194/amt-4-1627-2011
UeNo, S., Nagata, S., Kitai, R. & Kurokawa, H. (2004) Features of solar telescopes at the Hida observatory and the possibilities of coordinated observations with solar-B. The Solar-B Mission and the Forefront of Solar Physics, ASP Conference Series, 325, 319.
World Data Center for Geomagnetism, Kyoto, Nosé, M., Iyemori, T., Sugiura, M., Kamei, T. (2015a) Geomagnetic Dst index. https:// doi.org/10.17593/14515-74000
World Data Center for Geomagnetism, Kyoto, Nosé, M., Iyemori, T., Sugiura, M., Kamei, T. (2015b) Geomagnetic AE index. https:// doi.org/10.17593/15031-54800
Yatagai, A., Tanaka, Y., Abe, S., Shinbori, A., Yagi, M., UeNo, S. et al. (2014) Interuniversity upper atmosphere global observation network (IUGONET) metadata database and analysis software. Data Science Journal, 13, PDA37–PDA43. https://doi. org/10.2481/dsj.IFPDA-07
Yumoto, K. & the 210MM Magnetic Observation Group. (1996) The STEP 210 magnetic meridian network project. Journal of Geomagnetism and Geoelectricity, 48(11), 1297–1310. https:// doi.org/10.5636/jgg.48.1297
Yumoto, K. & the CPMN Group. (2001) Characteristics of pi 2 magnetic pulsations observed at the CPMN stations: a review of the STEP results. Earth, Planets and Space, 53(10), 981–992. https://doi.org/10.1186/BF03351695
Yumoto, K. & the MAGDAS Group. (2006) MAGDAS project and its application for space weather. In: Gopalswamy, N. & Bhattacharyya, A. (Eds.) Solar Influence on the Heliosphere and Earth's Environment: Recent Progress and Prospects, Quest Publications for ILWS and Indian Institute of Geomagnetism, ISBN-81-87099-40-2:309–405.
Yumoto, K. & the MAGDAS Group. (2007) Space weather activities at SERC for IHY: MAGDAS. Bulletin of the Astronomical Society of India, 35, 511–522.