CV

Education

Ph.D in Physics, Tohoku University, 2004/03
M.S. in Physics, Tohoku University, 2001/03
B.S. in Physics, Tohoku University, 1999/03

Work experience

2023/04 to present: External Associate Professor
- The University of Tokyo, Japan
- Duties included: Teaching
2013/07 to present: Associate Professor
- National Institute of Polar Research, Japan
- Duties included: PIs and teaching (SOKENADAI)
2009/08~2013/06: Assistant Professor
- Tokyo Institute of Technology, Japan
- Duties included: Research on mass extinction
2007/04~2009/07: Special Postdoctoral Researcher
- RIKEN, Japan
- Duties included: Own research (MHD code development)
- Supervisor: Dr. Toshikazu Ebisuzaki
2004/04~2007/03: JSPS Postoctoral Researcher
- NICT, NASA/GSFC, and Nagoya University
- Duties included: Own research (space weather)
- Supervisor: Prof. Takashi Kikuchi
2001/04~2004/03: JSPS DC1 Researcher
- Tohoku University
- Duties included: Own research (dayside aurora)
- Supervisor: Prof. Hiroshi Fukunishi
2000/07~2000/09: Visiting Researcher
- Bell Labs, Lucent Technologies
- Supervisor: Dr. Louis Lanzerotti
1999/09~1999/11: Visiting Researcher
- Bell Labs, Lucent Technologies
- Supervisor: Dr. Louis Lanzerotti

Awards

2024/05: Tanakadate Award, SGEPSS
2016/04: Excellence in Refereeing, GRL, AGU
2015/04: The MEXT Young Scientists’ Prize
2011/09: Excellence in Refereeing, Space Weather, AGU
2009/09: Obayashi Award, SGEPSS
2004/03: President’s Award, Tohoku University
1999/12: Outstanding Student Paper Award, AGU Fall Meeting

Recent Publications (listed ater 2023 only)

The list of publications before 2023 is here (PDF file)

Extended red aurora associated with super substorm igniting the October 10, 2024 magnetic storm as revealed by citizen science

Kataoka, R. et al. (2024). "Extended red aurora associated with super substorm igniting the October 10, 2024 magnetic storm as revealed by citizen science" submitted to GRL.

Radiation-Belt Dropouts: Relationship with Geomagnetic Storms and MeV Precipitation

Freund, D. et al. (2024). "Radiation-Belt Dropouts: Relationship with Geomagnetic Storms and MeV Precipitation" submitted to GRL.

Global analysis of the extended cosmic-ray decreases observed with world-wide networks of neutron monitors and muon detectors; temporal variation of the rigidity spectrum and its implication

Munakata et al. (2024). "Global analysis of the extended cosmic-ray decreases observed with world-wide networks of neutron monitors and muon detectors; temporal variation of the rigidity spectrum and its implication" ApJ. 974, 283.

Extended magenta aurora as revealed by citizen science

Kataoka R., S. A. Reddy, S. Nakano, J. Pettit, and Y. Nakamura (2024). "Extended magenta aurora as revealed by citizen science" scirep. 15, 25849.

MeV Electron Precipitation during Radiation Belt Dropouts

Freund, D., Blum, L., Vidal-Luengo, S., Bruno, A., & Kataoka, R. (2024). "MeV Electron Precipitation during Radiation Belt Dropouts" Journal of Geophysical Research: Space Physics. 129, e2024JA032759.

Rigidity spectrum and its solar cycle variation of the north-south anisotropy in galactic cosmic-rays observed by ground-based muon detectors

Kozai et al. (2024). "Rigidity spectrum and its solar cycle variation of the north-south anisotropy in galactic cosmic-rays observed by ground-based muon detectors" ApJ. **, **.

Formation mechanism of fingers that protrude eastward from the Io plasma disk during the interchange instability

Tanaka, T., Ebihara, Y., Watanabe, M., Fujita, S., & Kataoka, R. (2024). "Formation mechanism of fingers that protrude eastward from the Io plasma disk during the interchange instability" Journal of Geophysical Research: Space Physics. 129, e2024JA032559

Exceptionally gigantic aurora in the polar cap on a day when the solar wind almost disappeared

Hosokawa, K., R. Kataoka, T. T. Tsuda, Y. Ogawa, Y. Zhang, and L. J. Paxton (2024). "Exceptionally gigantic aurora in the polar cap on a day when the solar wind almost disappeared" Science Advances. 10, 25.

Magnetic Storm-Time Red Aurora as Seen From Hokkaido, Japan on 1 December 2023 Associated With High-Density Solar Wind

Kataoka, R., Miyoshi, Y., Shiokawa, K., Nishitani, N., Keika, K., Amano, T., & Seki, K. (2024). "Magnetic storm-time red aurora as seen from Hokkaido, Japan on 1 December 2023 associated with high-density solar wind" Geophysical Research Letters. 51, e2024GL108778.

Comparative Observations of the Outer Belt Electron Fluxes and Precipitated Relativistic Electrons

Vidal-Luengo, S. E., Blum, L. W., Bruno, A., Guzik, T. G., de Nolfo, G., Ficklin, A. W., et al. (2024). "Comparative observations of the outer belt electron fluxes and precipitated relativistic electrons" Geophysical Research Letters. 51, e2024GL109673.

Thermospheric nitric oxide energy budget during extreme geomagnetic storms: a comparative study

Bag T, Kataoka R, Ogawa Y, Fujiwara H, Li Z, Singh V, Sivakumar V, Sridharan S, Pirnaris P and Tourgaidis T (2024). "Thermospheric nitric oxide energy budget during extreme geomagnetic storms: a comparative study " Front. Astron. Space Sci.. 11:1273079.

Multiple convection cells induced by in‐front and off‐front interactions between the obliquely northward IMF and the geomagnetic field

Tanaka, T., Ebihara, Y., Watanabe, M., Fujita, S., & Kataoka, R. (2024). "Multiple convection cells induced by in‐front and off‐front interactions between the obliquely northward IMF and the geomagnetic field " Journal of Geophysical Research: Space Physics. 129, e2023JA031994.

Research Fields of Space Weather Forecast Featuring Magnetic Storm

片岡龍峰 (2024). "宇宙天気に関する研究の様々な広がり～磁気嵐の成因に関する研究紹介～" プラズマ・核融合学会誌. 100(4), 187-192

Characterization of Relativistic Electron Precipitation Events Observed by the CALET Experiment Using Self-Organizing-Maps

Vidal-Luengo, S. E., Blum, L. W., Bruno, A., Ficklin, A. W., de Nolfo, G., Guzik, T. G., et al. (2024). "Characterization of Relativistic Electron Precipitation Events Observed by the CALET Experiment Using Self-Organizing-Maps" Journal of Geophysical Research: Space Physics. 129, e2024JA032481

Hisotrical records and red sign

片岡龍峰 (2024). "縁起と赤気付・関連史料翻刻" 国文学研究資料館紀要文学研究篇. 50, 79-102.

Direct measurements of cosmic - ray iron and nickel with CALET on the International Space Station

Adriani, O. et al. (2024). "Direct measurements of cosmic - ray iron and nickel with CALET on the International Space Station" Advances in Space Research. in press.

On the Spatial and Temporal Evolution of EMIC Wave-Driven Relativistic Electron Precipitation: Magnetically Conjugate Observations From the Van Allen Probes and CALET

Blum, L. W., Bruno, A., Capannolo, L., Ma, Q., Kataoka, R., Torii, S., & Baishev, D. (2024). "On the Spatial and Temporal Evolution of EMIC Wave-Driven Relativistic Electron Precipitation: Magnetically Conjugate Observations From the Van Allen Probes and CALET" Studies in Japanese Literature and Culture. 51, e2023GL107087

Machine learning-based emulator for physics-based simulation of auroral current system

Kataoka, R., A. Nakamizo, S. Nakano, and S. Fujita (2024). "Machine learning-based emulator for physics-based simulation of auroral current system" Space Weather. 21, e2023SW003720

Atmospheric Ionizations by Solar X-Rays, Solar Protons, and Radiation Belt Electrons in September 2017 Space Weather Event

Murase, K., Kataoka, R., Nishiyama, T., Sato, K., Tsutsumi, M., Tanaka, Y., et al. (2023). "Atmospheric Ionizations by Solar X-Rays, Solar Protons, and Radiation Belt Electrons in September 2017 Space Weather Event" Space Weather. 21, e2023SW003651

Numerical Prediction of Changes in Atmospheric Chemical Compositions During a Solar Energetic Particle Event on Mars

Nakamura, Y., Leblanc, F., Terada, N., Hiruba, S., Murata, I., Nakagawa, H., et al. (2023). "Numerical Prediction of Changes in Atmospheric Chemical Compositions During a Solar Energetic Particle Event on Mars" Journal of Geophysical Research: Space Physics. 128, e2022JA031250

Probabilistic modelling of substorm occurrences with an echo state network

Nakano, S., Kataoka, R., Nosé, M., and Gjerloev, J. W. (2023). "Probabilistic modelling of substorm occurrences with an echo state network" Annales Geophysicae. 41, 529–539

Direct Measurement of the Spectral Structure of Cosmic-Ray Electrons+Positrons in the TeV Region with CALET on the International Space Station

Adriani, O. et al. (CALET Collaboration) (2023). "Direct Measurement of the Spectral Structure of Cosmic-Ray Electrons+Positrons in the TeV Region with CALET on the International Space Station" Physical Review Letters. 131, 191001

Learning Old Japanese and Chinese Literature from the Study of Aurora using Japanese Classical Texts

片岡龍峰 (2023). "日本の古典籍を用いたオーロラ研究から考える古文・漢文の学習" サステナビリティ教育研究. 第5号, 42-48

Machine learning emulator for physics-based prediction of ionospheric potential response to solar wind variations

Kataoka, R., S. Nakano, and S. Fujita (2023). "Machine learning emulator for physics-based prediction of ionospheric potential response to solar wind variations" Earth, Planets and Space. 75, 139

Response of high-altitude clouds to the galactic cosmic ray cycles in tropical regions

Miyahara H, Kusano K, Kataoka R, Shima S-i and Touber E (2023). "Response of high-altitude clouds to the galactic cosmic ray cycles in tropical regions" Frontiers in Earth Science. 11:1157753

A Ground-Based Instrument Suite for Integrated High-Time Resolution Measurements of Pulsating Aurora With Arase

Hosokawa, K., Oyama, S.-I., Ogawa, Y., Miyoshi, Y., Kurita, S., Teramoto, M., et al. (2023). "A Ground-Based Instrument Suite for Integrated High-Time Resolution Measurements of Pulsating Aurora With Arase" Journal of Geophysical Research: Space Physics. 128, e2023JA031527

Charge-Sign Dependent Cosmic-Ray Modulation Observed with the Calorimetric Electron Telescope on the International Space Station

Adriani, O. et al. (CALET Collaboration) (2023). "Charge-Sign Dependent Cosmic-Ray Modulation Observed with the Calorimetric Electron Telescope on the International Space Station" Physical Review Letters. 130, 211001

Radial Transport of Io Plasma From the Inner Magnetosphere to the Tail

Tanaka, T., Ebihara, Y., Watanabe, M., Fujita, S., & Kataoka, R. (2023). "Radial Transport of Io Plasma From the Inner Magnetosphere to the Tail" Journal of Geophysical Research: Space Physics. 128, e2022JA030891

The Clustering Occurrence of Red Sign Auroral Events in Japanese History

Kataoka, R. (2023). "The Clustering Occurrence of Red Sign Auroral Events in Japanese History" Studies in Japanese Literature and Culture. 6, 119-143

Service and leadership

JpGU Space Weather and Space Climate session convener since 2015
ISSI workshop convener of auroral physics in 2018
PI of AuroraX project (2022-2027)
PI of AI emulator project (2024-2027)

Ryuho Kataoka

CV

Education

Work experience

Awards

Recent Publications (listed ater 2023 only)

Recent Talks (listed after 2023 only)

Teaching

Service and leadership