COMMISSION G: Ionospheric Radio and Propagation(including ionospheric communications and remote sensingof ionised media)(November 2020 – May 2023)
Edited by Mamoru Yamamoto (Kyoto University)
1. Summary
URSI Commission G aims to discuss radio and its propagation in the ionosphere. In addition tothese essential purposes, this commission is to study the ionospheric communications and remotesensing of the ionized media, too. The last purpose includes general research of the ionosphere and/or
the upper atmosphere. We should note that measurement techniques and instruments take importantpart of our research in the commission G.
The ionosphere that overlaps with the upper atmosphere is the transition region from the Earth's
atmosphere to the space. It is a region that is largely affected from both the top and bottom, andcomplex interactions occur. Recently, studies of the other planets are getting more important in our
research community. Researchers from Japan contribute the vast research area of the USRI
Commission G in wide spectrum. Level of the research is also very high. We have various
measurement instruments on the ground, sounding rocket, and satellites. Region of the studies spreads
from Japan, Asia to the world as well. We have big efforts on modeling (large-scale computer
simulation) and database. Comprehensive analyses of multiple data are also actively conducted.
This report compiles contributions from our committee members. We summarized the research
activities from major institutions in Japan. They include variety of studies with major measurement
instruments, observation network, related model/database projects, and future plans that are closely
related to the Commission G.

2. Activity Report
2.1. National Institute for Polar Research (NIPR)
NIPR continues to promote national and international collaborative research using the PANSY
and EISCAT radars. For the PANSY project, research results on gravity waves in the Antarctic
troposphere and lower stratosphere and polar mesospheric echoes have been published. For the
EISCAT project, several research results related to pulsating auroras, etc. have been published. A
summary paper on the Interhemispheric Coupling Study by Observations and Modelling (ICSOM) has
also been published.
The advanced radar research promotion center (ARRC) was established in NIPR in April 2022 topromote further joint usage and collaborative research with advanced radars such as the EISCAT
Svalbard Radar (ESR), PANSY, and the forthcoming EISCAT_3D radar system. Its website ishttps://www.arrc.nipr.ac.jp/. The first open call for proposals for the joint use of the PANSY radar was
launched in December 2022. Six applications were accepted, and the selected proposals will be
implemented in FY2023.
2.2. Institute for Space-Earth Environmental Research (ISEE), Nagoya University
Many ground-satellite conjugate measurements of phenomena at subauroral latitudes have beenreported in 2020-2023 such as (1) plasma and field observations in the magnetospheric source regionof four stable auroral red (SAR) arc, (2) spatiotemporal development of global distribution ofmagnetospheric ELF/VLF waves, (3) magnetic conjugacy of Pc1 waves and isolated proton
precipitation at subauroral latitudes, (4) multi-event study of characteristics and propagation of1

naturally occurring ELF/VLF waves, (5) simultaneous observation of two isolated proton auroras at
subauroral latitudes, (6) first simultaneous observation of a nighttime medium-scale travelingionospheric disturbance, (7) multi-wavelength imaging observations of STEVE. We further reported(1) a review of medium-scale traveling ionospheric disturbances (MSTIDs), (2) statistical results of
the MSTID activity and propagation direction of MSTIDs, (3) statistical study of MSTIDs over Taiwan,(4) the occurrence features and causes of storm-time plasma bubbles in the equatorial to mid-latitude
ionosphere, (5) relationship between the locations of the midlatitude trough minimum in theionosphere and plasmapause in the inner magnetosphere, (6) calculation TEC variations by inputting
the temporal variation of the solar flare spectrum for the X9.3 flare into the GAIA model and compared
it with the observed TEC, (7) an unseasonal equatorial plasma bubble (EPB) event over South-East
Asia, (8) a general review of equatorial plasma bubbles and scintillation features including their
physical mechanisms and controlling factors responsible for their occurrence, and unresolved issues
related to their day-to-day and short-term variability, (9) the polarization electric field and associateddensity variations of a night time MSTID in the magnetosphere. Furthermore, J.-P. St-Maurice andNishitani (2020) proposed a new generation mechanism of the near range echoes observed by theSuperDARN radars.
2.3. Research Institute for Sustainable Humanosphere (RISH), Kyoto University
We are operating two large atmospheric radars in Japan and in Indonesia. They are described asfollows. The MU radar is the 46.5-MHz atmospheric radar located in Shigaraki, Shiga, Japan. The
radar can measure atmospheric winds from near the surface to about 20km, and is also useful tomeasure coherent and incoherent scatters from the ionosphere. Multi-beam capability with the activephased array antenna is the most power feature of the system, and the various interesting observations
wereconducted
so
far.
(MU
radar
and
EAR
web:
http://www.rish.kyotou.ac.jp/mu+ear/english/index.html)
MU radar web: http://www.rish.kyoto-u.ac.jp/mu/en/
Equatorial Atmosphere Radar (EAR) is a big atmospheric radar located in West Sumatra,Indonesia. The EAR was established in June 2001, and has continued long-term observations sinceJune 2001. Research Institute for Sustainable Humanosphere (RISH), Kyoto University and National
Institute of Aeronautics and Space (LAPAN) of Indonesia jointly operate the facility that is open toscientists from both countries and from the world. The EAR data are basically opened.
EAR web: http://www.rish.kyoto-u.ac.jp/ear/index-e.html
Our recent research activities are study of atmospheric turbulence by using multiple measurement
instruments, the MU radar, EAR, radiosonde, UAV etc. This is to fill gap that existed for long time
between the turbulence theory and observations. For the study of the ionosphere radio propagation
techniques are used. One is the dual-band beacon experiment at 401MHz/965MHz from the COSMIC2 satellites to the ground-based receiver in Thailand, Vietnam, and Indonesia. Another way is 3D
tomography analysis of the total-electron content (TEC) measurement from GNSS receivers of
GEONET. Numerical model studies were conducted to connect between global and local models. The
analysis technique largely advanced by including data from the ionosonde network. There were much
effort on the radio remote sensing techniques. One is advanced study for radar clutter rejection. We
also conducted theoretical simulations of the atmospheric radar echo itself. Development of new windmeasurement technique by using radar imaging technique is underway.
2.4. National Institute for Information and Communications Technology (NICT)
We have been operating regular ionosonde observations in Japan and in the Antarctica since 1950's
to monitor ionospheric conditions as a part of space weather. The observations have been also usedfor various research topics such as short-wave fadeout during extreme space weather event (Tao et al.,2000). GEONET is the GPS receiver network over Japan that is operated by Geospatial Information
Authority of Japan. GEONET is also used for ionospheric monitoring and research. Two-dimensional
total electron content (TEC) maps over Japan have been provided routinely by NICT (https://aer-ncweb.nict.go.jp/GPS/DRAWING-TEC/). Several prominent research topics related to GEONET arestatistical analysis of long-term estimation of extreme TEC in Japan (Nishioka et al., 2021) and solar2

activity dependence of medium-scale traveling ionospheric disturbances (Perwitasari et al., 2022).
SEALION is an ionospheric observation network in Southeast Asia to monitor and study theoccurrence and growth of equatorial ionospheric disturbances, especially plasma bubbles. The network
has been setup by NICT since 2003 and has been operated to date by NICT with an international effort
by seven institutes in five Southeast Asian countries. In January 2020, a new VHF radar was installedin Chumphon, Thailand, close to the magnetic equator (SEALION data web: https://aer-ncweb.nict.go.jp/sealion/). Many studies on the equatorial ionosphere have been carried out recently(e.g., Thammavongsy et a., 2020, Meenakshi et al., 2021, Tulasi et al., 2020 and so on). Ground-totopside model of Atmosphere and Ionosphere for Aeronomy (GAIA) is a global physics model of the
Earth's whole atmospheric regions from the troposphere to the topside thermosphere as well as theionosphere. The model has been developed under the collaboration between Kyushu University, Seikei
University and NICT since 2007. Some of the recent studies using GAIA can be found in theionospheric research (Shinagawa et al., 2021, Watanabe et al., 2021 and so on). The real-time andprediction system using GAIA has also been developed (Tao et al., 2020). A regional ionosphericmodel has also been developed and used for the studies of sporadic E layers (e.g., Andoh et al., 2023).
2.5. Electronic Navigation Research Institute (ENRI)
Electronic Navigation Research Institute (ENRI) is studying ionospheric impacts on GNSS.
Ionospheric effects on GNSS and mitigation are important topics for practical use of GNSS such as
air navigation. Spatial variation in the ionospheric total electron contents (TEC), ionosphericscintillation in GNSS signals are characterized to support such GNSS-based aeronautical navigation
system. Realtime ionospheric monitoring over Japan is realized and continuously operated by ENRI.
The realtime monitoring includes TEC perturbation, TEC variation (rate of TEC index: ROTI),
absolute TEC, and three-dimensional electron density profiles reconstructed by using realtime GNSS
network data. Anomalous long-distance propagation of VHF aeronautical navigation signals (108-118
MHz) by the sporadic E (Es) layer, which is a potential source of radio interference, is continuously
observed by a ground-based receiver network developed by University of Electro-Communications
and other groups. Observation of signals of Instrument Landing System (ILS) Localizer (LOC) by anaviation receiver has been started to assess the impact of anomalous propagation on an airborne
receiver.
2.6. University of Electro-Communications
Studies of mid and low latitude ionosphere using various radio and optical observations have been
conducted. One of the targets is sporadic E which is a thin layer of enhanced electron density in the
mid-latitude E region ionosphere. Spatial structure and its dynamical characteristics were investigatedby using monitoring observations of aeronautical navigation radios at VHF frequencies. By combining
such VHF radio observations with GPS TEC measurements, the spatial structure of sporadic E during
daytime was visualized to show a front-like structure extending in the zonal direction and move in themeridional direction. The dynamical characteristics of sporadic E was also examined by using a HF
Doppler sounding system in Japan. The HF Doppler observation of sporadic E during nighttime
indicated that the structure moves southwestward in tandem with the Medium-Scale Traveling
Ionospheric Disturbances (MSTIDs) in the F region altitutde, confirming the coupling of the E and F
region ionosphere during summer nighttime. Data from the HF Doppler sounder were also used toshow the vertical motion of the mid-latitude ionosphere trigger by the penetrating electric field fromthe magnetosphere. Now the system of the HF Doppler sounder is being upgraded and most of thereceiving system is based on the software defined radio. In the close future, we plan to add a FM-CW
ranging capability to the HF Doppler sounding system and derive the altitude of reflection.
2.7 Chiba University
Chiba University, in collaboration with other universities and institutes, has been conducting
studies on ionospheric disturbances using HF (High Frequency) and LF (Low Frequency)/VLF (VeryLow Frequency) bands of radio waves. For research using HF-band radio waves, our focus has beenon studying ionospheric disturbances associated with natural disasters such as earthquakes, volcanic3eruptions, and typhoons using HF Doppler observation. The University of Electro-Communications
has been an active partner in this research, and due to nearly two decades of observation, an update to
the system was necessary. Our laboratory has played a central role in developing new receivers using
software-defined radios (SDRs) to replace conventional ones. Currently, all stations except one havebeen upgraded to new digital receivers. Since SDR receivers are now becoming smaller and lessexpensive, even relatively small ones can perform observation effectively. Therefore, we are also
developing an inexpensive SDR receiver for the HF Doppler observation. As part of the HF-START
project, conducted in collaboration with the National Institute of Information and Communications
Technology, we have opened a web page to the public. However, the current webpage only provides
information on propagation paths. A new scheme for deriving the attenuation of radio waves in theionosphere is being developed to provide information on received strength. In addition to HF
observations, we are involved in international collaborative observations with Tohoku University and
Hokkaido University, known as AVON (Asia VLF Network Observation)/OCTAVE (Observation ofCondiTion of ionized Atmosphere by VLF Experiment), using LF/VLF observations. Through theseobservation networks, we have successfully clarified D-region ionospheric variations associated withearthquakes. Moreover, we have revealed the D-region oscillations caused by ULF-modulated
energetic electron precipitation in the sub-auroral zone, horizontal inhomogeneity of the D-region
during solar flares, and the relationship between the D-region variation and SSW (Sudden
Stratospheric Warming).
2.8. Tohoku University
Members (staffs and graduate school students) of Tohoku University, and their collaborators
carried out research activities for the Earth’s ionosphere and magnetosphere using the data from theground (EISCAT radar etc.) and spacecrafts (Arase, VAP, etc.). We also performed planetaryatmospheric studies by modeling, and probe data particularly for Mars using the data taken by MGS,
MAVEN, and ExoMars/TGO. In addition, we participate as Co-I for the future planetary spacecraft
missions, such as, JUICE, MMX. We have also operated our auroral all sky imagers at Arctic
Longyearbyen and Antarctic Syowa station as collaborations with NIPR since 2022. We are also
conduction ground-based telescopes dedicated to planetary atmospheric observation at the Haleakala
summit of Hawaii.
Tohoku University organized the symposium on planetary science was held in Sendai in February
every year during this period. The goal of this symposium is to extend present research, and also tocreate new researches, fields for the future, through reviews and discussions on planetary sciences of
not only solar-planetary plasmas/atmospheres but also interaction with the surface of planetary bodies
and environment of exoplanets. (See the website at http://pparc.tohoku.ac.jp/sympo/sps/.)
The publication list is in the following. We have three research group in Tohoku University, and
our
web
pages
are
https://pparc.gp.tohoku.ac.jp/,
https://pat.gp.tohoku.ac.jp/,
https://pat.gp.tohoku.ac.jp/.

3. References
3.1. National Institute for Polar Research (NIPR)=== Papers related to PANSY ===Kohma, M., K. Sato, K. Nishimura, M. Tsutsumi, and T. Sato (2020), A statistical analysis of theenergy dissipation rate estimated from the PMWE spectral width in the Antarctic. J. Geophys.
Res. Atmos., 125, e2020JD032745. doi:10.1029/2020JD032745.
Minamihara, Y., K. Sato, and M. Tsutsumi (2020), Intermittency of gravity waves in the Antarctic
troposphere and lower stratosphere revealed by the PANSY radar observation. J. Geophys. Res.
Atmos., 125, e2020JD032543. doi:10.1029/2020JD032543.
Kohma, M., Sato, K., Nishimura, K., Tsutsumi, M., Weakening of polar mesosphere winter echo andturbulent energy dissipation rates after a stratospheric sudden warming in the Southern
Hemisphere in 2019. Geophysical Research Letters, 48, e2021GL092705, 2020.
https://doi.org/10.1029/2021GL092705, 2021.
4

Kohma, M., K. Sato, K. Nishimura, and M. Tsutsumi (2021), Weakening of PMWE and Turbulent
Energy Dissipation Rates after a Stratospheric Sudden Warming in the Southern Hemisphere in
2019, Geophys. Res. Lett., 48, e2021GL092705. doi:10.1029/2021GL092705
Murase, K., R. Kataoka, T. Nishiyama, K. Nishimura, T. Hashimoto, Y. Tanaka, A. Kadokura, Y.
Tomikawa, M. Tsutsumi, Y. Ogawa, H. Uchida, K. Sato, S. Kasahara,T. Mitani, S. Yokota, T. Hori,
K. Keika, T. Takashima, Y. Kasahara, S. Matsuda, M. Shoji, A. Matsuoka, I. Shinohara, Y.
Miyoshi, T. Sato, Y. Ebihara, and T. Tanaka (2022), Mesospheric ionization during substorm
growth phase, J. Space Weather Space Clim., https://doi.org/10.1051/swsc/2022012.
Sato, K., J. Inoue, A. Yamazaki, Y. Tomikawa, and K. Sato (2022), Reduced error and uncertainty inanalysis and forecasting in the Southern Hemisphere through assimilation of PANSY radarobservations from Syowa Station: a mid-latitude extreme cyclone case, Q. J. R. Meteorol. Soc.,
148, 748, 3087–3102, doi:10.1002/qj.4347.
Sato, K., Tomikawa, Y., Kohma, M., Yasui, R., Koshin, D., Okui, H., Watanabe, S., Miyazaki, K.,
Tsutsumi, M., Murphy, D., Meek, C., Tian, Y., Ern, M., Baumgarten, G., Chau, J. L., Chu, X.,
Collins, R., Espy, P. J., Hashiguchi, H., Kavanagh, A. J., Latteck, R., Lübken, F.-J., Milla, M.,
Nozawa, S., Ogawa, Y., Shiokawa, K., Alexander, M. J., and Nakamura, T. (2023),
Interhemispheric Coupling Study by Observations and Modelling (ICSOM): Concept,
Campaigns, and Initial Results, J. Geophys. Res. Atmos., doi:10.1029/2022JD038249.
Minamihara, Y., K. Sato, and M. Tsutsumi (2023), Kelvin-Helmholtz Billows in the Troposphere andLower Stratosphere Detected by the PANSY Radar at Syowa station in the Antarctic, J. Geophys.
Res. Atmos., 128, e2022JD036866, doi:10.1029/2022JD036866.
=== Papers related to EISCAT ===Hosokawa, K., Kullen, A., Milan, S., et al. (2020), Aurora in the Polar Cap: A Review, Space Sci Rev
216, 15, https://doi.org/10.1007/s11214-020-0637-3.
Hosokawa, K., Y. Miyoshi, M. Ozaki, S. Oyama, Y. Ogawa, S. Kurita, Y. Kasahara, Y. Kasaba, S.
Yagitani, S. Matsuda, F. Tsuchiya, A. Kumamoto, R. Kataoka, K. Shiokawa, T. Raita, E. Turunen,
T. Takashima, I. Shinohara, and R. Fujii (2020), Multiple time-scale beats in aurora: precise
orchestration via magnetospheric chorus waves, Nature Scientific Reports, SREP-19-35427A.
Oyama, S., A. Shinbori, Y. Ogawa, M. Kellinsalmi, T. Raita, A. Aikio, H. Vanhamäki, K. Shiokawa, I.
Virtanen, L. Cai, A. B. Workayehu, M. Pedersen, K. Kauristie, T. T. Tsuda, B. Kozelov, A.
Demekhov, A. Yahnin, F. Tsuchiya, A. Kumamoto, Y. Kasahara, A. Matsuoka, M. Shoji, M.
Teramoto, M. Lester (2020), An Ephemeral Red Arc Appeared at 68° MLat at a Pseudo Breakup
During Geomagnetically Quiet Conditions, Journal of Geophysical Research: Space Physics
125(10).
Tsuda, T. T., Li, C., Hamada, S., Hosokawa, K., Oyama, S., Nozawa, S., et al., OI 630.0‐nm and N2
1PG emissions in pulsating aurora events observed by an optical spectrograph at Tromsø, Norway(2020), Journal of Geophysical Research: Space Physics, 125, e2020JA028250.
https://doi.org/10.1029/2020JA028250.
Ogawa, Y., Y. Tanaka, A. Kadokura, K. Hosokawa, Y. Ebihara, T. Motoba, B. Gustavsson, U.
Brandstrom, Y. Sato, S. Oyama, M. Ozaki, T. Raita, F. Sigernes, S. Nozawa, K. Shiokawa, M. Kosch,
K. Kauristie, C. Hall, S. Suzuki, Y. Miyoshi, A. Gerrard, H. Miyaoka, R. Fujii (2020), Developmentof low-cost multi-wavelength imager system for studies of aurora and airglow, Polar Science,
doi:10.1016/j.polar.2019.100501.
Kawamura, Y., K. Hosokawa, S. Nozawa, Y. Ogawa, T. Kawabata, S. Oyama, Y. Miyoshi, S. Kurita,
R. Fuji (2020), Estimation of the emission altitude of pulsating aurora by using the five-wavelength
photometer, Earth, Planets and Space, 72, 96.
Billett, D. D., K. Hosokawa, A. Grocott, J. A. Wild, A. L. Aruliah, Y. Ogawa, S. Taguchi (2020), Multiinstrument Observations of Ion-Neutral Coupling in the Dayside Cusp, Geophysical Research
Letters, doi:10.1029/2019GL085590.
Miyoshi, Y., K. Hosokawa, S. Kurita, S.-I. Oyama, Y. Ogawa, S. Saito, I. Shinohara, A. Kero, E.
Turunen, P. T. Verronen, S. Kasahara, S. Yokota, T. Mitani, T. Takashima, N. Higashio, Y. Kasahara,
S. Matsuda, F. Tsuchiya, A. Kumamoto, A. Matsuoka, T. Hori, K. Keika, M. Shoji, M. Teramoto, S.
Imajo, C. Jun, S. Nakamura (2021), Penetration of MeV electrons into the mesosphere5accompanying pulsating aurorae, doi.org/10.1038/s41598-021-92611-3, Scientific Reports 11(1).
Takada, M., K. Seki, Y. Ogawa, K. Keika, S. Kasahara, S. Yokota, T. Hori, K. Asamura, Y. Miyoshi, I.
Shinohara (2021), Low‐Altitude Ion Upflow Observed by EISCAT and its Effects on Supply of
Molecular Ions in the Ring Current Detected by Arase (ERG) , Journal of Geophysical Research:
Space Physics 126(5).
Namekawa, T., T. Mitani, K. Asamura, Y. Miyoshi, K. Hosokawa, Y. Ogawa, S. Saito, T. Hori, S. Sugo,
O. Kawashima, S. Kasahara, R. Nomura, N. Yagi, M. Fukizawa, T. Sakanoi, Y. Saito, A. Matsuoka,
I. Shinohara, Y. Fedorenko, A. Nikitenko, C. Koehler (2021),Rocket observation of sub-relativistic
electrons in the quiet dayside auroral ionosphere, Journal of Geophysical Research: Space Physics,
doi:10.1029/2020JA028633.
Sugo, S., O. Kawashima, S. Kasahara, K. Asamura, R. Nomura, Y. Miyoshi, Y. Ogawa, K. Hosokawa,T. Mitani, T. Namekawa, T. Sakanoi, M. Fukizawa, N. Yagi, Y. Fedorenko, A. Nikitenko, S. Yokota,
K. Keika, T. Hori, C. Koehler (2021), Energy‐Resolved Detection of Precipitating Electrons of
30–100 keV by a Sounding Rocket Associated With Dayside Chorus Waves, Journal of GeophysicalResearch: Space Physics 126(3).
Bjoland, L. M., Y. Ogawa, U. P. Løvhaug, D. A. Lorentzen, S. M. Hatch, K. Oksavik (2021), Electron
Density Depletion Region Observed in the Polar Cap Ionosphere, Journal of Geophysical Research:
Space Physics 126(1).
Stepanov N.A., V. A. Sergeev, M.A. Shukhtina, Y. Ogawa, X. Chu, D.Rogov (2021), Ionosphericelectron density and conductance changes in the auroral zone during substorms, Journal ofGeophysical Research: Space Physics, doi:10.1029/2021JA029572.
Fukizawa, M., T. Sakanoi, Y. Ogawa, T. T. Tsuda, K. Hosokawa (2021), Statistical Study of Electron
Density Enhancements in the Ionospheric F Region Associated with Pulsating Auroras, Journal ofGeophysical Research - Space Physics, doi:10.1029/2021JA029601.
Miyamoto, T., S. Oyama, T. Raita, K. Hosokawa, Y. Miyoshi, Y. Ogawa, and S. Kurita (2021),
Variations in cosmic noise absorption in association with equatorward development of the pulsating
auroral patch: A case study to estimate the energy spectra of auroral precipitating electrons, Journalof Geophysical Research: Space Physics, doi:10.1029/2021JA029309.
Nishiyama, T., M. Taguchi, H. Suzuki, P. Dalin, Y. Ogawa, U. Brandstrom, T. Sakanoi (2021),
Temporal evolutions of N2+ Meinel (1,2) band near 1.5 μm associated with aurora breakup and theireffects on mesopause temperature estimations from OH Meinel (3,1) band, Earth, Planets and Space,
EPSP-D-20-00293.
Hosokawa, K., Y. Miyoshi, S.-I. Oyama, Y. Ogawa, S. Kurita, Y. Kasahara, Y. Kasaba, S. Yagitani, S.
Matsuda, M. Ozaki, F. Tsuchiya, A. Kumamoto, T. Takashima, I. Shinohara, and R. Fujii (2021),
Over-darkening of pulsating aurora, Journal of Geophysical Research: Space Physics,
doi:10.1029/2020JA028838.
Tesfaw H. W., I. I. Virtanen, A. Aikio, A. Nel, M.Kosch, Y. Ogawa (2022), Precipitating electronenergy spectra and auroral power estimation by incoherent scatter radar with high temporal
resolution, Journal of Geophysical Research: Space Physics, doi:10.1029/2021JA029880.
Safargaleev, V., T. Sergienko, K. Hosokawa, S.-I. Oyama, Y. Ogawa, Y. Miyoshi, S. Kurita, R. Fujii(2022), Altitude of pulsating arcs as inferred from tomographic measurements, Earth, Planets andSpace, EPSP-D-21-00256.
Fukizawa M., T. Sakanoi, Y. Tanaka, Y. Ogawa, K. Hosokawa, B. Gustavsson, K. Kauristie, A.
Kozlovsky, T. Raita, U. Brändström, T. Sergienko (2022), Reconstruction of precipitating electrons
and three-dimensional structure of a pulsating auroral patch from monochromatic auroral images
obtained from multiple observation points, Annales Geophysicae, angeo-2022-5.
Oyama, S., H. Vanhamäki, L. Cai, A. Aikio, M. Rietveld, Y. Ogawa, T. Raita, M. Kellinsalmi, K.
Kauristie, B. Kozelov, A. Shinbori, K. Shiokawa, T. T. Tsuda, T. Sakanoi (2022), Thermosphericwind response to a sudden ionospheric variation in the trough: Event at a pseudo breakup during
geomagnetically quiet conditions, Earth, Planets and Space, EPSP-D-22-00079.
Nanjo, S., S. Nozawa, M. Yamamoto, T. Kawabata, M. G. Johnsen, T. T. Tsuda, and K. Hosokawa(2022), An Automated Auroral Detection System Using Deep Learning: Real-time Operation in
Tromsoe, Norway, Scientific Reports, DOI: 10.1038/s41598-022-11686-8.
6

Chen, L., K. Shiokawa, Y. Miyoshi, S. Oyama, C.‐W. Jun, Y. Ogawa, K. Hosokawa, Y. Inaba, Y.
Kazama, S. Y. Wang, S. W. Y. Tam, T. F. Chang, B. J. Wang, K. Asamura, S. Kasahara, S. Yokota,
T. Hori, K. Keika, Y. Kasaba, A. Kumamoto, F. Tsuchiya, M. Shoji, Y. Kasahara, A. Matsuoka, I.
Shinohara, S. Imajo, S. Nakamura, M. Kitahara (2022), Observation of source plasma and field
variations of a substorm brightening aurora at L~6 by a ground-based camera and the Arase satellite
on 12 October 2017, Journal of Geophysical Research: Space Physics, doi:10.1029/2021JA030072.
Stober, G., A. Liu, A. Kozlovsky, Z. Qiao, A. Kuchar, C. Jacobi, C. Meek, D. Janches, G. Liu, M.
Tsutsumi, N. Gulbrandsen, S. Nozawa, M. Lester, E. Belova, J. Kero, and N. Mitchell (2022),
Meteor Radar vertical wind observation biases and mathematical debiasing strategies including a
3DVAR+DIV algorithm, Atmos. Meas. Tech., 15, 5769-5792.
Kavanagh, A., Y. Ogawa, E. E. Woodfield (2022), Two techniques for determining F-region Ion
Velocities at meso-scales: differences and impacts on Joule heating, Journal of GeophysicalResearch: Space Physics, doi:10.1029/2021JA030062.
Bosse, L., J. lilensten, M. G. Johnsen, N. Gillet, S. Rochat, A. Delboulbé, S. Curaba, Y. Ogawa, P.
Derverchère, S. Vauclair (2022), The polarisation of auroral emissions: A tracer of the E region
ionospheric currents, Journal of Space Weather and Space Climate, doi:10.1051/swsc/2022014.
Tesema, F., N. Partamies, D. K. Whiter, Y. Ogawa (2022), Types of pulsating aurora: Comparison ofmodel and EISCAT electron density observations, Annales Geophysicae, vol 40, 1-10.
Matuura, N., Fujii, R., and Nozawa, S. (2023), History of EISCAT – Part 6: the participation of Japanin the EISCAT Scientific Association, Hist. Geo Space. Sci., 14, 61–69,
https://doi.org/10.5194/hgss-14-61-2023.
3.2 Institute for Space-Earth Environmental Research (ISEE), Nagoya University
Imajo, S., M. Nosé, M. Aida, N. Higashio, H. Matsumoto, K. Koga, C. Smith, R. J. MacDowall, andA. Yoshikawa, Evolution of field-aligned current in the meridional plane during substorm:
Multipoint observations from satellites and ground stations, Earth, Planets and Space, 72:58,
doi:10.1186/s40623-020-01182-6, 2020.
Hashimoto, K. K., T. Kikuchi, I. Tomizawa, K. Hosokawa, J. Chum, D. Buresova, M. Nosé, and K.
Koga, Penetration electric fields observed at middle and low latitudes during the 22 June 2015
geomagnetic storm, Earth, Planets and Space, 72:71, doi:10.1186/s40623-020-01196-0, 2020.
Shiokawa, K., Y. Otsuka, and M. Connors, Statistical study of auroral/resonant-scattering 427.8-nm
emission observed at subauroral latitudes over 14 years, J. Geophys. Res., 124, doi:
10.1029/2019JA026704, 2019.
Goodwin, L. V., Y. Nishimura, Y. Zou, K. Shiokawa, and P. T. Jayachandran., Mesoscale Convection
Structures Associated with Airglow Patches Characterized using Cluster-Imager Conjunctions, J.
Geophys. Res., 124, doi: 10.1029/2019JA026611, 2019.
Xu, H. K. Shiokawa, S. Oyama, and Y. Otsuka, Thermospheric wind variations observed by a FabryPerot interferometer at Tromso, Norway, at substorm onsets, Earth Planets, and Space, 71:93,
https://doi.org/10.1186/s40623-019-1072-0, 2019.
Tsuchiya, S., K. Shiokawa. H. Fujinami, Y. Otsuka, T. Nakamura, M. Connors, I. Schofield, B.
Shevtsov, and I. Poddelsky, Three-dimensional Fourier analysis of the phase velocity
distributions of mesospheric and ionospheric waves based on airglow images collected over 10
years: Comparison of Magadan, Russia, and Athabasca, Canada, J. Geophys. Res., 124, doi:
10.1029/2019JA026783, 2019.
Balan, N., Qing-He Zhang, Zanyang Xing, R. Skoug, K. Shiokawa, H. Luhr, S. Tulasi Ram, Y. Otsuka,
and Lingxin Zhao, Capability of Geomagnetic Storm Parameters to Identify Severe Space
Weather, Astrophysical Journal, 887:51, https://doi.org/10.3847/1538-4357/ab5113, 2019.
Xu H., K. Shiokawa, S. Oyama, and S. Nozawa, High-latitude thermospheric wind study using a
Fabry-Perot interferometer at Tromsoe in Norway: averages and variations during quiet times,
Earth Planets Space, 71:110, 10.1186/s40623-019-1093-8, 2019.
Tulasi Ram, S., B. Nilam, N. Balan, Q. Zhang, K. Shiokawa, D. Chakrabarty, Z. Xing, K. Venkatesh,
B. Veenadhari and A. Yoshikawa, Three different episodes of prompt equatorial electric field
perturbations under steady southward IMF Bz during St. Patrick’s day storm, J. Geophys. Res.,7

124, doi: 10.1029/2019JA027069, 2019.
Okoh, D., G. Seemala, B. Rabiu, J. B. Habarulema, S. Jin, K. Shiokawa, Y. Otsuka, M. Aggarwal, J.
Uwamahoro, P. Mungufeni, B. Segun, R. Obafaye, N. Ellahony, C. Okonkwo, M. Tshisaphungo,
D. Shetti, A Neural Network based Ionospheric Model over Africa from COSMIC and Ground
GPS Observations, J. Geophys. Res., 124, doi: 10.1029/2019JA027065, 2019.
Tsuchiya S., K. Shiokawa, Y. Otsuka, T. Nakamura, M. Yamamoto, M. Connors, I. Schofield, B.
Schevtsov, and I. Poddelskiy, Wavenumber spectra of atmospheric gravity waves and mediumscale traveling ionospheric disturbances based on more than 10-year airglow images in Japan,
Russia, and Canada, J. Geophys. Res., 125, doi: 10.1029/2019JA026807, 2020.
Yadav S., K. Shiokawa, S. Oyama, and Y. Otsuka, Multi-event analysis of oscillatory motion of
medium-scale traveling ionospheric disturbances observed by a 630-nm airglow imager overTromsoe, Journal of Geophysical Research: Space Physics, 125, e2019JA027598.
https://doi.org/10.1029/2019JA027598, 2020.
Sarudin I., N. S. A. Hamid, M. Abdullah, S. M. Buhari, K. Shiokawa, Y. Otsuka, and C. Y. Yatini,
Equatorial plasma bubble zonal drift velocity variations in response to season, local time, andsolar activity across Southeast Asia, J. Geophys. Res., 125, doi: 10.1029/2019JA027521, 2020.
Hosokawa K., K. Takami, Su. Saito, Y. Ogawa, Y. Otsuka, K. Shiokawa, C.-H. Chen and C.-H. Lin,
Observations of equatorial plasma bubbles using a low cost 630.0 nm all sky imager in Ishigaki
Island, Japan, Earth, Planets and Space, 72:56, https://doi.org/10.1186/s40623-020-01187-1,
2020.
Tulasi Ram S., K. K. Ajith, T. Yokoyama, M. Yamamoto, K. Hozumi, K. Shiokawa, Y. Otsuka and G.
Li, Dilatory and downward development of 3-meter scale irregularities in the Funnel-like regionof Equatorial Plasma Bubble, Geophys. Res. Lett., 47, doi:10.1029/2020GL087256, 2020.
Kim, H., K. Shiokawa, J. Park, Y. Miyoshi, Y. Miyashita, C. Stolle, K.-H. Kim, J. Matzka, S. Buchert,
T. Fromm and J. Hwang, Ionospheric plasma density oscillation related to EMIC Pc1 waves,Geophys. Res. Lett., 47, https://doi.org/10.1029/2020GL089000, 2020.
Nilam B., S. Tulasi Ram, K. Shiokawa, N. Balan, and Q. Zhang, The solar wind density control on the
Prompt Penetration Electric Field and Equatorial Electrojet, J. Geophys. Res., 125,https://doi.org/10.1029/2020JA027869, 2020.
Inaba Y., K. Shiokawa, S. Oyama, Y. Otsuka, A. Oksanen, A. Shinbori, A. Yu. Gololobov, Y. Miyoshi,
Y. Kazama, S.-Y. Wang, S. W. Y. Tam, T.-F. Chang, B.-J. Wang, S. Yokota, S. Kasahara, K. Keika,
T. Hori, A. Matsuoka, Y. Kasahara, A. Kumamoto, Y. Kasaba, M. Shoji, I. Shinohara, and C.
Stolle, Plasma and field observations in the magnetospheric source region of a stable auroral red(SAR) arc by the Arase satellite on 28 March 2017, J. Geophys. Res., 125,https://doi.org/10.1029/2020JA028068, 2020.
Takahashi, H., C. M. Wrasse, C. A. O. B. Figueiredo, D. Barros, I. Paulino, P. Essien, M. A. Abdu, Y.
Otsuka and K. Shiokawa, Equatorial plasma bubble occurrence under propagation of MSTID and
MLT gravity waves, J. Geophys. Res., 125, https://doi.org/10.1029/2019JA027566, 2020.
Li, G., B. Ning, Y. Otsuka, M. A. Abdu, P. Abadi, Z. Liu, L. Spogli, and W. Wan, Challenges toEquatorial Plasma Bubble and Ionospheric Scintillation Short-Term Forecasting and Future
Aspects in East and Southeast Asia. Surv Geophys, https://doi.org/10.1007/s10712-020-09613-5,
2020.
Ghosh, P., Y. Otsuka, S. Mani, H. Shinagawa, Day-to-day variation of pre-reversal enhancement in theequatorial ionosphere based on GAIA model simulations. Earth Planets Space 72, 93,
https://doi.org/10.1186/s40623-020-01228-9, 2020.
Sivavaraprasad, G, D.V. Ratnam, and Y. Otsuka, Multicomponent Analysis of Ionospheric Scintillation
Effects Using the Synchrosqueezing Technique for Monitoring and Mitigating their Impact on
GNSS Signals, Journal of Navigation, 72, 669-684, doi: 10.1017/S0373463318000929, 2019.
Ratnam, DV, Y. Otsuka, G. Sivavaraprasad, and JRKK. Dabbakuti, Development of multivariate
ionospheric TEC forecasting algorithm using linear time series model and ARMA over lowlatitude GNSS station, Adv. Space Res., 63, 2848-2856, doi: 10.1016/j.asr.2018.03.024, 2019.
Obana, Y., N. Maruyama, A. Shinbori, K. K. Hashimoto, M. Fedrizzi, M. Nose, Y. Otsuka, N. Nishitani,
T. Hori, A. Kumamoto, F. Tsuchiya, S. Matsuda, A. Matsuoka, Y. Kasahara, A. Yoshikawa, Y.
Miyoshi, and I. Shinohara (2019) Response of theionosphere‐plasmasphere coupling tothe8September 2017 storm: What erodesthe plasmasphere so severely?, SpaceWeather,17, 861-876.
https://doi.org/10.1029/2019SW002168
Panasenko, S.V., Y. Otsuka, M. Kamp, L.F. Chernogor, A. Shinbori, T. Tsugawa, and M. Nishioka,
Observation and characterization of traveling ionospheric disturbances induced by solar eclipseof 20 March 2015 using incoherent scatter radars and GPS networks, J. Atmos. Sol.-Terr. Phys.,191, 2019,105051, ISSN 1364-6826, https://doi.org/10.1016/j.jastp.2019.05.015, 2019.
Sori, T., A. Shinbori, Y. Otsuka, T. Tsugawa, and M. Nishioka, Characteristics of GNSS total
electroncontent enhancements over the midlatitudes during a geomagneticstorm on 7 and 8
November 2004, J. Geophys. Res.Space Physics, 124, https://doi.org/10.1029/2019JA026713,
2019
Shinbori, A., Y. Otsuka, T. Sori, T. Tsugawa, and M. Nishioka, Temporal and spatial variations of total
electron content enhancements during a geomagnetic storm on 27 and 28 September 2017, J.
Geophys. Res., 125, e2019JA026873, doi:10.1029/2019JA026873, 2020.
Koval, A., Y. Chen, T. Tsugawa, Y. Otsuka, A. Shinbori, M. Nishioka, A. Brazhenko, A. Stanislavsky,
A. Konovalenko, Q.-H. Zhang, C. Monstein, and R. Gorgutsa, Direct observations of travelingionospheric disturbances as focusers of solar radiation: Spectral caustics, Ap. J., 877, doi:
10.3847/1538-4357/ab1b52, 2019.
Inaba Y., K. Shiokawa, S. Oyama, Y. Otsuka, A. Oksanen, A. Shinbori, A. Yu. Gololobov, Y. Miyoshi,
Y. Kazama, S.-Y. Wang, S. W. Y. Tam, T.-F. Chang, B.-J. Wang, S. Yokota, S. Kasahara, K. Keika,
T. Hori, A. Matsuoka, Y. Kasahara, A. Kumamoto, Y. Kasaba, M. Shoji, I. Shinohara, and C.
Stolle, Plasma and field observations in the magnetospheric source region of a stable auroral red(SAR) arc by the Arase satellite on 28 March 2017, J. Geophys. Res., 125,https://doi.org/10.1029/2020JA028068, 2020.
Oyama, S., A. Shinbori, Y. Ogawa, M. Kellinsalmi, T. Raita, A. Aikio , H. Vanhamaki, K. Shiokawa,
I. Virtanen, L. Cai, A. B. Workayehu, M. Pedersen, K. Kauristie, T. T. Tsuda, B. Kozelov, A.
Demekhov, A. Yahnin, F. Tsuchiya , A. Kumamoto, Y. Kasahara, A. Matsuoka, M. Shoji, M.
Teramoto and M. Lester, An ephemeral 1 red arc appeared at 68-degree MLat at a pseudo breakup
duringgeomagneticallyquietconditions,J.
Geophys.
Res.,
125,
https://doi.org/10.1029/2020JA028468, 2020.
Hosokawa K., M. Nagata, K. Shiokawa, and Y. Otsuka, What controls the luminosity of polar cap
airglow patches?: implication from airglow measurements in Eureka, Canada in comparison with
SuperDARN convection pattern, Polar Science, https://doi.org/10.1016/j.polar.2020.100608,
2020.
Yadav S., K. Shiokawa, Y. Otsuka, M. Connors, and J.-P. St. Maurice, Multi-wavelength imaging
observations of STEVE at Athabasca, Canada, J. Geophys. Res., 126,
https://doi.org/10.1029/2020JA028622, 2021.
Takeshita Y., K. Shiokawa, Y. Miyoshi, M. Ozaki, Y. Kasahara, S. Oyama, M. Connors, J. Manninen,
V. K. Jordanova, D. Baishev, A. Oinats, and V. Kurkin, Study of spatiotemporal development of
global distribution of magnetospheric ELF/VLF waves using ground-based and satellite
observations, and RAM-SCB simulations, for the March and November 2017 storms, J. Geophys.
Res., 126, https://doi.org/10.1029/2020JA028216, 2021.
Imajo, S., Y. Miyoshi, Y. Kazama, K. Asamura, I. Shinohara, K. Shiokawa, Y. Kasahara, Y. Kasaba, A.
Matsuoka, S.-Y. Wang, S. W. Y. Tam, T.-F. Chang, B.-J. Wang, V. Angelopoulos, C.-W. Jun, M.
Shoji, S. Nakamura, M. Kitahara, M. Teramoto, S. Kurita, and T. Hori, Active auroral arc poweredby accelerated electrons from very high altitudes, Scientific Reports, 11:1610,
https://doi.org/10.1038/s41598-020-79665-5, 2020.
Martinez-Calderon, C., Y. Katoh, J. Manninen, O. Santolik, Y. Kasahara, S. Matsuda, A. Kumamoto,
F. Tsuchiya, A. Matsuoka, M. Shoji, M. Teramoto, I. Shinohara, K. Shiokawa, and Y. Miyoshi,
Multi-event study of characteristics and propagation of naturally occurring ELF/VLF waves
using high-latitude ground observations and conjunctions with the Arase satellite, J. Geophys.
Res., 126, https://doi.org/10.1029/2020JA028682, 2021.
Ozaki, M., K. Shiokawa, R. B. Horne, M. J. Engebretson, M. Lessard, Y. Ogawa, K. Hosokawa, M.
Nose, Y. Ebihara, A. Kadokura, S. Yagitani, Y. Miyoshi, S. Hashimoto, S. Sinha, A. K. Sinha, G.
K. Seemala, and C.-W. Jun, Magnetic conjugacy of Pc1 waves and isolated proton precipitation9

at subauroral latitudes: Importance of ionosphere as intensity modulation region, Geophys. Res.
Lett., 48, https://doi.org/10.1029/2020GL091384, 2021.
Kim, H., K. Shiokawa, J. Park, Y. Miyoshi, C. Stolle and S. Buchert, Statistical analysis of Pc1 wave
ductingdeducedfromSwarmsatellites,
J.
Geophys.
Res.,
125,
https://doi.org/10.1029/2020JA029016, 2021.
Thomas, N., K. Shiokawa, Y. Miyoshi, Y. Kasahara, I. Shinohara, A. Kumamoto, F. Tsuchiya, A.
Matsuoka, S. Kasahara, S. Yokota, K. Keika, T. Hori, K. Asamura, S.-Y. Wang, Y. Kazama, S. W.
Y. Tam, T. F. Chang, B. J. Wang, J. Wygant, A. Breneman, and G. Reeves, Investigation of smallscale electron density irregularities observed by the Arase and Van Allen Probes satellites insideand outside the plasmasphere. Journal of Geophysical Research: Space Physics, 126,e2020JA027917. https://doi.org/10.1029/2020JA027917, 2021."
Wang, Y., Z. Cao, Z.-Y. Xing, Q.-H. Zhang, P. T. Jayachandran, K. Oksavik, N. Balan, and K.
Shiokawa, The GPS scintillations and TEC variations in association with a polar cap arc, J.
Geophys. Res., 126, https://doi.org/10.1029/2020JA028968, 2021.
Inaba, Y., K. Shiokawa, S. Oyama, Y. Otsuka, M. Connors, I. Schofield, Y. Miyoshi, S. Imajo, A.
Shinbori, A. Y. Gololobov, Y. Kazama, S.-Y. Wang, S. W. Y. Tam, T. F. Chang, B.-J. Wang, K.
Asamura, S. Yokota, S. Kasahara, K. Keika, T. Hori, A. Matsuoka, Y. Kasahara, A. Kumamoto,
S. Matsuda, Y. Kasaba, F. Tsuchiya, M. Shoji, M. Kitahara, S. Nakamura, I. Shinohara, H. E.
Spence, G. D. Reeves, R. J. Macdowall, C. W. Smith, J. R. Wygant, J. W. Bonnell, Multi-event
Analysis of Plasma and Field Variations in Source of Stable Auroral Red (SAR) Arcs in Inner
Magnetosphere
during Non-storm-time
Substorms,
J.
Geophys.
Res.,
126,
https://doi.org/10.1029/2020JA029081, 2021.
Okoh, D. I., A. B. Rabiu, K. Shiokawa, Y. Otsuka, Q. Wu, G. K. Seemala, and Z. T. Katamzi-Joseph,An experimental investigation into the possible connections between the zonal neutral windspeeds and equatorial plasma bubble drift velocities over the African equatorial region, J. Atmos.
Solar-Terr. Phys., 220, https://doi.org/10.1016/j.jastp.2021.105663, 2021.
Nakamura, K., K. Shiokawa, Y. Otsuka, A. Shinbori, Y. Miyoshi, M. Connors, H. Spence, G. Reeves,
H. O. Funsten, R. MacDowall, C. Smith, J. Wygant, and J. Bonnell, Simultaneous observation of
two isolated proton auroras at subauroral latitudes by a highly sensitive all-sky camera and Van
Allen Probes, J. Geophys. Res., 126, https://doi.org/10.1029/2020JA029078, 2021.
Sarudin, I., N. S. A Hamid, M. Abdullah, S. M Buhari, 4, K. Shiokawa, Y. Otsuka, K. Hozumi, and P.
Jamjareegulgarn, Influence of Zonal Wind Velocity Variation on Equatorial Plasma Bubble
Occurrences over Southeast Asia, J. Geophys. Res., 126, e2020JA028994,
https://doi.org/10.1029/2020JA028994, 2021.
Ozaki, M. T. Inoue, Y. Tanaka, S. Yagitani, Y. Kasahara, K. Shiokawa, Y. Miyoshi, K. Imamura, K.
Hosokawa, S. Oyama, R. Kataoka, Y. Ebihara, Y. Ogawa, and A. Kadokura, Spatial evolution ofwave-particle interaction region deduced from flash-type auroras and chorus-ray tracing, J.
Geophys. Res., 126, e2021JA029254, https://doi.org/10.1029/2021JA029254, 2021.
Kawai, K., K. Shiokawa, Y. Otsuka, S. Oyama, Y. Kasaba, Y. Kasahara, F. Tsuchiya, A. Kumamoto, S.
Nakamura, A. Matsuoka, S. Imajo, Y. Kazama, Shiang-Yu, Wang, Sunny W. Y. Tam, T. F. Chang,
B. J. Wang, K. Asamura, S. Kasahara, S. Yokota, K. Keika, T. Hori, Y. Miyoshi, C. Jun, M. Shoji,
and I. Shinohara, First simultaneous observation of a nighttime medium-scale travelingionospheric disturbance from the ground and a magnetospheric satellite, J. Geophys. Res., 126,
https://doi.org/10.1029/2020JA029086, 2021.
Otsuka, Y., Medium-Scale Traveling Ionospheric Disturbances, In Space Physics and Aeronomy,
Ionosphere Dynamics and Applications: Advances in Ionospheric Research: Current
Understanding and Challenges (Geophysical Monograph Series), Vol. 3, Edition by C. Huang, G.
Lu, Y. Zhang, and L. J. Paxton, American Geophysical Union, (2021).
doi:10.1002/9781119815617 (First published:24 March 2021)
Otsuka, Y., Shinbori, A., Tsugawa, T., and Nishioka, M., Solar activity dependence of medium-scale
traveling ionospheric disturbances using GPS receivers in Japan. Earth Planets Space 73, 22(2021). doi:10.1186/s40623-020-01353-5 (Published: 20 January 2021)
Cheng, P.H., Lin, C., Otsuka, Y., Liu, H., Rajesh,P. K., Chen, C.-H., Lin, J.-T., and Chang, M. T.,
Statistical study of medium-scale traveling ionospheric disturbances in low-latitude ionosphere10using an automatic algorithm. Earth Planets Space 73, 105 (2021). doi:10.1186/s40623-02101432-1 (Published: 13 May 2021)
Sori, T., Shinbori, A., Otsuka, Y., Tsugawa, T., and Nishioka, M., The occurrence feature of plasma
bubbles in the equatorial to midlatitude ionosphere during geomagnetic storms using long-term
GNSS-TEC data. Journal of Geophysical Research: Space Physics, 126, e2020JA029010 (2021).
doi:10.1029/2020JA029010 (First published: 06 May 2021)
Shinbori, A., Otsuka, Y., Tsugawa, T., Nishioka, M., Kumamoto, A., Tsuchiya, F., Matsuda, S.,
Kasahara, Y., and Matsuoka, A., Relationship between the locations of the midlatitude trough andplasmapause using GNSS-TEC and Arase satellite observation data. Journal of GeophysicalResearch: Space Physics, 126, e2020JA028943 (2021). doi:10.1029/2020JA028943 (First
published: 15 April 2021)
Watanabe, K., Jin, H., Nishimoto, S., Imada, S., Kawai, T., Kawate, T., Otsuka, Y., Shinbori, A.,
Tsugawa, T., and Nishioka, M., Model-based reproduction and validation of the total spectra of asolar flare and their impact on the global environment at the X9.3 event of September 6, 2017.
Earth Planets Space 73, 96 (2021). doi:10.1186/s40623-021-01376-6
Currie, J. L., Carter, B. A., Retterer, J., Dao, T., Pradipta, R., Caton, R., Groves, K., Otsuka, Y.,
Yokoyama, T., Hozumi, K., Le Truong, T., Terkildsen, M., On the generation of an unseasonal
EPB over South East Asia. Journal of Geophysical Research: Space Physics, 126,e2020JA028724, (2021). doi:10.1029/2020JA028724 (First published: 09 February 2021)
Sivakandan, M., Otsuka, Y., Ghosh, P., Shinagawa, H., Shinbori, A., and Miyoshi, Y., Comparison ofseasonal and longitudinal variation of daytime MSTID activity using GPS observation and GAIA
simulations. Earth Planets Space 73, 35 (2021). doi:10.1186/s40623-021-01369-5 (Published: 04
February 2021)
Li, G., Ning, B., Otsuka, Y. et al. Challenges to Equatorial Plasma Bubble and Ionospheric Scintillation
Short-Term Forecasting and Future Aspects in East and Southeast Asia. Surv Geophys (2020).
doi:10.1007/s10712-020-09613-5 (Published: 05 September 2020)
Dao, T., Huy, M., Carter, B., Le, Q., Trinh, T., Phan, B., and Otsuka, Y., New observations of the total
electron content and ionospheric scintillations over Ho Chi Minh City, Vietnam Journal of Earth
Sciences, doi:10.15625/0866-7187/42/4/15281 (published on 05 November 2020)
Huang, F., Lei, J., Otsuka, Y., Luan, X., Liu, Y., Zhong, J., and Dou, X., Characteristics of MediumScale Traveling Ionospheric Disturbances and Ionospheric Irregularities at Mid-Latitudes
Revealed by the Total Electron Content Associated With the Beidou Geostationary Satellite, IEEE
Transactions on Geoscience and Remote Sensing, 59:8, 6424-6430, doi:
10.1109/TGRS.2020.3032741. (Date of Publication: 05 November 2020)
J.‐P. St.‐Maurice, N. Nishitani, On the Origin of Far‐Aspect Angle Irregularity Regions Seen by HF
Radarsat
100‐kmAltitude,J.
GeophysicalResearch,125,6,
https://doi.org/10.1029/2019JA027473, 2020.
Nishitani, N., Y. Hamaguchi, and T. Hori, Development of remote HF wave receiver in the backlobe
direction of the SuperDARN Hokkaido East radar: Initial observations, Polar Sci.,
https://doi.org/10.1016/j.polar.2021.100669, 2021.
Okoh, D. I., A. B. Rabiu, K. Shiokawa, Y. Otsuka, Q. Wu, G. K. Seemala, and Z. T. Katamzi-Joseph,An experimental investigation into the possible connections between the zonal neutral windspeeds and equatorial plasma bubble drift velocities over the African equatorial region, J. Atmos.
Solar-Terr. Phys., 220, https://doi.org/10.1016/j.jastp.2021.105663, 2021.
Sarudin, I., N. S. A Hamid, M. Abdullah, S. M Buhari, K. Shiokawa, Y. Otsuka, K. Hozumi, and P.
Jamjareegulgarn, Influence of Zonal Wind Velocity Variation on Equatorial Plasma Bubble
Occurrences over Southeast Asia, J. Geophys. Res., 126, e2020JA028994,
https://doi.org/10.1029/2020JA028994, 2021.
Kawai, K., K. Shiokawa, Y. Otsuka, S. Oyama, Y. Kasaba, Y. Kasahara, F. Tsuchiya, A. Kumamoto, S.
Nakamura, A. Matsuoka, S. Imajo, Y. Kazama, Shiang-Yu, Wang, Sunny W. Y. Tam, T. F. Chang,
B. J. Wang, K. Asamura, S. Kasahara, S. Yokota, K. Keika, T. Hori, Y. Miyoshi, C. Jun, M. Shoji,
and I. Shinohara, First simultaneous observation of a nighttime medium-scale travelingionospheric disturbance from the ground and a magnetospheric satellite, J. Geophys. Res., 126,
https://doi.org/10.1029/2020JA029086, 2021.
11

Takahashi, H., P. Essien, C.A.O.B Figueiredo, C.M. Wrasse, D. Barros, M. A. Abdu, Y. Otsuka, K.
Shiokawa and Guozhu Li, Multi-instrument study of the longitudinal wave structures for plasma
bubble seeding in the equatorial ionosphere, Earth and Planetary Physics, 5: 1-10,
doi:10.26464/epp2021047, 2021.
Diaz Pena, J., J. Semeter, Y. Nishimura, R. Varney, A. Reimer, M. Hairston, M. Zettergren, M. Hirsch,
O. Verkhoglyadova, K. Hosokawa, and K. Shiokawa, Auroral heating of plasma patches due tohigh-latitude reconnection, J. Geophys. Res., 126, https://doi.org/10.1029/2021JA029657, 2021.
Manninen, J., Kleimenova, N.G., Martinez-Calderon, C. et al. Unexpected VLF Bursty-Patches Above
5 kHz: A Review of Long-Duration VLF Series Observed at Kannuslehto, Northern Finland. Surv
Geophys 44, 555–581 (2023). https://doi.org/10.1007/s10712-022-09741-0
Martinez-Calderon, C., Manninen, J. K., Manninen, J. T., and Turunen, T. (2023). Statistics of unusual
naturally occurring VLF radio emissions termed bursty-patches observed at Kannuslehto, Finland.
JournalofGeophysicalResearch:Space
Physics,
128,
e2022JA030792.
https://doi.org/10.1029/2022JA030792
3.3 Research Institute for Sustainable Humanosphere (RISH), Kyoto University<Atmospheric studies>
N. A. M. Aris, H. Hashiguchi, and M. Yamamoto, Development of Software-Defined Multichannel
Receiver for EAR, Radio Sci., 54, 671-679, doi:10.1029/2019RS006817, 2019.
A. Adachi and H. Hashiguchi, Application of Parametric Speakers to Radio Acoustic Sounding System,
Atmos. Meas. Tech., 12, 5699-5715, doi:10.5194/amt-12-5699-2019, 2019.
P.-M. Wu, D. Ardiansyah, S. Mori, and K. Yoneyama, The effect of an active phase of the MaddenJulian oscillation on surface winds over the western coast of Sumatra Island, IOP Conf. Series:
Earth Env. Sci., 303, 012009. doi:10.1088/1755-1315/303/1/012009, 2019.
S. Yokoi, S. Mori, F. Syamsudin, U. Haryoko, and B. Geng, Environmental conditions for nighttime
offshore migration of precipitation area as revealed by in situ observation off Sumatra Island,Mon. Wea. Rev., 147, 3391-3407. doi:10.1175/MWR-D-18-0412.1, 2019.
Jayalakshmi Janapati, Balaji Kumar Seela, Pay-Liam Lin, Pao. K. Wang, Chie-Huei Tseng, K. Krishna
Reddy, Hiroyuki Hashiguchi, Lei Feng, Subrata Kumar Das, and C. K. Unnikrishnan, Raindrop
size distribution characteristics of Indian and Pacific Ocean tropical cyclones observed at India
and Taiwan sites, J. Meteor. Soc. Japan, 98, 2, 2020/02
H. Luce, L. Kantha, H. Hashiguchi, D. Lawrence, Estimation of Turbulence Parameters in the Lower
Troposphere from ShUREX (2016-2017) UAV Data, Atmosphere, 10, 384,
doi:10.3390/atmos10070384, 2019/04.
L. Kantha, H. Luce, H. Hashiguchi, A. Doddi, Atmospheric structures in the troposphere as revealedby high-resolution backscatter images from MU radar operating in range-imaging mode, Progressin Earth and Planetary Science, 6, 32, doi:10.1186/s40645-019-0274-1, 2019/03.
L. Kantha, H. Luce, H. Hashiguchi, Mid-level Cloud-base Turbulence: Radar Observations andModels, J. Geophys. Res.: Atmosphere, 124, 2019/03.
<Ionospheric studies>
M. Yamamoto, W.K. Hocking, S. Nozawa, J. Vierinen, H. Liu, and N. Nishitani, Special issue “Recent
Advances in MST and EISCAT/Ionospheric Studies - Special Issue of the Joint MST15 and
EISCAT18 Meetings, May 2017”, Earth Planets Space, 71, doi:10.1186/s40623-019-1070-2,
2019.
L.M. Joshi, L.-C. Tsai, S.-Y. Su, Y. Otsuka, T. Yokoyama, M. Yamamoto, S. Sarkhel, K. Hozumi, andC.-H. Lu, Investigation of Spatiotemporal Morphology of Plasma Bubbles Based on EAR
Observations, Journal of Geophysical Research: Space Physics, 124, doi:10.1029/2019JA026839,
2019.
S. Tulasi Ram, K. K. Ajith, T. Yokoyama, M. Yamamoto, K. Hozumi, K. Shiokawa, Y. Otsuka, G. Li,
Dilatory and Downward Development of 3‐m Scale Irregularities in the Funnel‐Like Region of a
Rapidly Rising Equatorial Plasma Bubble Geophysical, Research Letters, 47, 13, 2020/07/16.
C. Martinis, T. Yokoyama, M. Nishioka, All‐Sky Imaging Observations and Modeling of Bright 630
nm Airglow Structures Associated with MSTIDs, Journal of Geophysical Research: Space
12

Physics, 124, 8, 7332-7340, 2019/08/26.
Afolayan Abimbola O, Singh Mandeep Jit, Abdullah Mardina, Buhari Suhaila M, Yokoyama Tatsuhiro,Supnithi Pornchai, Observation of seasonal asymmetry in the range spread F occurrence at
different longitudes during low and moderate solar activity, ANNALES GEOPHYSICAE, 37, 4,
733-745, 2019/08/21.
Yokoyama Tatsuhiro, Jin Hidekatsu, Shinagawa Hiroyuki, Liu Huixin, Seeding of Equatorial Plasma
Bubbles by Vertical Neutral Wind, GEOPHYSICAL RESEARCH LETTERS, 46, 13, 7088-7095,
2019/07/16.
<Atmospheric studies>
Hubert Luce, Hiroyuki Hashiguchi, On the estimation of vertical air velocity and detection of
atmospheric turbulence from the ascent rate of balloon soundings, Atmospheric Measurement
Techniques, 13, 4, 1989-1999, April 2020.
Hubert Luce, Lakshmi Kantha, Hiroyuki Hashiguchi, Abhiram Doddi, Dale Lawrence, Masanori
Yabuki, On the Relationship between the TKE Dissipation Rate and the Temperature Structure
Function Parameter in the Convective Boundary Layer. Journal of the Atmospheric Sciences, 77,
7, 2311-2326, July 2020.
Ravidho Ramadhan, Marzuki, Mutya Vonnisa, Harmadi, Hiroyuki Hashiguchi, Toyoshi Shimomai,
Diurnal Variation in the Vertical Profile of the Raindrop Size Distribution for Stratiform Rain as
Inferred from Micro Rain Radar Observations in Sumatra
Advances in Atmospheric
Sciences, 37, 8, 832-846, August 2020.
M. Kohma, K. Sato, K. Nishimura, M. Tsutsumi, T. Sato, A Statistical Analysis of the Energy
Dissipation Rate Estimated From the PMWE Spectral Width in the Antarctic, Journal ofGeophysical Research: Atmospheres, 125, 16, August 2020.
Marzuki Marzuki, Dea Kurnia Harysandi, Rini Oktaviani, Lisna Meylani, Mutya Vonnisa, Harmadi
Harmadi, Hiroyuki Hashiguchi, Toyoshi Shimomai, L. Luini, Sugeng Nugroho, Muzirwan
Muzirwan, Nor Azlan Mohd Aris, International Telecommunication Union-Radiocommunication
Sector P.837-6 and P.837-7 performance to estimate Indonesian rainfall, TELKOMNIKA(Telecommunication Computing Electronics and Control), 18, 5, 2292-2292, October 2020.
Koji Nishimura, Masashi Kohma, Kaoru Sato, Toru Sato, Spectral Observation Theory and Beam
Debroadening Algorithm for Atmospheric Radar, IEEE Transactions on Geoscience and Remote
Sensing, 58, 10, 6767-6775, October 2020.
Muhammad Arif Rahman, Devis Styo Nugroho, Manabu D. Yamanaka, Masahiro Kawasaki, Osamu
Kozan, Masafumi Ohashi, Hiroyuki Hashiguchi, Shuichi Mori, Weather radar detection ofplanetary boundary layer and smoke layer top of peatland fire in Central Kalimantan, Indonesia,
Scientific Reports, 11, 1, December 2020.
Ryou Ohsawa, Akira Hirota, Kohei Morita, Shinsuke Abe, Daniel Kastinen, Johan Kero, Csilla Szasz,
Yasunori Fujiwara, Takuji Nakamura, Koji Nishimura, Shigeyuki Sako, Jun-ichi Watanabe,
Tsutomu Aoki, Noriaki Arima, Ko Arimatsu, Mamoru Doi, Makoto Ichiki, Shiro Ikeda, Yoshifusa
Ita, Toshihiro Kasuga, Naoto Kobayashi, Mitsuru Kokubo, Masahiro Konishi, Hiroyuki Maehara,
Takashi Miyata, Yuki Mori, Mikio Morii, Tomoki Morokuma, Kentaro Motohara, Yoshikazu
Nakada, Shin-ichiro Okumura, Yuki Sarugaku, Mikiya Sato, Toshikazu Shigeyama, Takao
Soyano, Hidenori Takahashi, Masaomi Tanaka, Ken’ichi Tarusawa, Nozomu Tominaga, Seitaro
Urakawa, Fumihiko Usui, Takuya Yamashita, Makoto Yoshikawa, Relationship between radarcross section and optical magnitude based on radar and optical simultaneous observations of faintmeteors, Planetary and Space Science, 194, 105011-105011, December 2020.
<Ionospheric studies>
R. Pfaff, M. Larsen, T. Abe, H. Habu, J. Clemmons, H. Freudenreich, D. Rowland, T. Bullett, M. Y.
Yamamoto, S. Watanabe, Y. Kakinami, T. Yokoyama, J. Mabie, J. Klenzing, R. Bishop, R.
Walterscheid, M. Yamamoto, Y. Yamazaki, N. Murphy, V. Angelopoulos, Daytime Dynamo
Electrodynamics With Spiral Currents Driven by Strong Winds Revealed by Vapor Trails andSounding Rocket Probes, Geophysical Research Letters, 47, 15, August 16, 2020.
K. K. Ajith, Guozhu Li, S. Tulasi Ram, M. Yamamoto, K. Hozumi, Prayitno Abadi, Haiyong Xie, On
the Seeding of Periodic Equatorial Plasma Bubbles by Gravity Waves Associated With Tropical
Cyclone: A Case Study, Journal of Geophysical Research: Space Physics, 125, 10, October 2020.
13

C. H. Chen, A. Saito, C. H. Lin, M. Yamamoto, S. Suzuki, G. K. Seemala, Correction to: Mediumscale traveling ionospheric disturbances by three-dimensional ionospheric GPS tomography(Earth, Planets and Space, (2016), 68, 1, (32), 10.1186/s40623-016-0412-6), Earth, Planets andSpace, 72, 1, December 2020.
J. L. Currie, B. A. Carter, J. Retterer, T. Dao, R. Pradipta, R. Caton, K. Groves, Y. Otsuka, T. Yokoyama,
K. Hozumi, T. Le Truong, M. Terkildsen, On the Generation of an Unseasonal EPB Over South
East Asia, Journal of Geophysical Research: Space Physics, 126, 2, February 2021.
Ssessenga, N, Yamamoto, M, Saito, S, Saito, A, Nishioka, M., Complementing regional ground GNSSSTEC computerized ionospheric tomography (CIT) with ionosonde data assimilation, GPS
Solutions, GPSS-D-20-00186R4, May 2021.
Ssessanga, N., Yamamoto, M. & Saito, S. Assessing the performance of a Northeast Asia Japancentered 3-D ionosphere specification technique during the 2015 St. Patrick’s day geomagnetic
storm. Earth Planets Space 73, 124, June 2021. https://doi.org/10.1186/s40623-021-01447-8<Atmospheric studies>
Meenakshi, S.; Sridharan, S.; Ivan, J. Solomon; Hozumi, K.; Yatini, C. Y.; Yokoyama, T.; Hashiguchi,
H., Anomalous Increase in the Occurrence of Post-Midnight FAI Radar Echoes in September
2019 and Its Relation With the Austral Sudden Stratospheric Warming, JOURNAL OF
GEOPHYSICAL RESEARCH-SPACE PHYSICS, Vol. 126(6), doi:10.1029/2020JA028902,
JUN 2021.
Rahman, Muhammad Arif; Nugroho, Devis Styo; Yamanaka, Manabu D.; Kawasaki, Masahiro; Kozan,
Osamu; Ohashi, Masafumi; Hashiguchi, Hiroyuki; Mori, Shuichi, Weather radar detection ofplanetary boundary layer and smoke layer top of peatland fire in Central Kalimantan, Indonesia,
SCIENTIFIC REPORTS, Vol. 11, doi:110.1038/s41598-020-79486-6, JAN 11, 2021.
R. Ramadhan, Marzuki, H. Yusnaini, R. Muharsyah, W. Suryanto, S. Sholihun, M. Vonnisa, A.
Battaglia, and H. Hashiguchi, Capability of GPM IMERG Products for Extreme Precipitation
Analysis over the Indonesian Maritime Continent, Remote Sens., Vol. 14(412),
doi:10.3390/rs14020412, 2022.
Scherllin-Pirscher, Barbara; Steiner, Andrea K.; Anthes, Richard A.; Alexander, M. Joan; Alexander,
Simon P.; Biondi, Riccardo; Birner, Thomas; Kim, Joowan; Randel, William J.; Son, Seok-Woo;
Tsuda, Toshitaka; Zeng, Zhen, Tropical Temperature Variability in the UTLS: New Insights from
GPS Radio Occultation Observations, JOURNAL OF CLIMATE, Vol. 34(8), doi:10.1175/JCLID-20-0385.1, APR 2021.
<Ionospheric studies>
Ajith, K. K.; Ram, S. Tulasi; Li, GuoZhu; Yamamoto, M.; Hozumi, K.; Yatini, C. Y.; Supnithi, P., On
the solar activity dependence of midnight equatorial asma bubbles during June solstice periods,
EARTH AND PLANETARY PHYSICS, Vol. 5(5), doi:10.26464/epp2021039, SEP 2021.
Currie, J. L.; Carter, B. A.; Retterer, J.; Dao, T.; Pradipta, R.; Caton, R.; Groves, K.; Otsuka, Y.;
Yokoyama, T.; Hozumi, K.; Le Truong, T.; Terkildsen, M., On the Generation of an Unseasonal
EPB Over South East Asia, JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,
Vol. 126(2), doi:10.1029/2020JA028724, Feb. 2021.
Fu, Weizheng; Ma, Guanyi; Lu, Weijun; Maruyama, Takashi; Li, Jinghua; Wan, Qingtao; Fan,
Jiangtao; Wang, Xiaolan, Improvement of Global Ionospheric TEC Derivation with Multi-Source
Data in Modip Latitude, ATMOSPHERE, Vol. 12(4), doi:10.3390/atmos12040434, APR 2021.
Fu, Weizheng; Ssessanga, Nicholas; Yokoyama, Tatsuhiro; Yamamoto, Mamoru, High-Resolution 3D Imaging of Daytime Sporadic-E Over Japan by Using GNSS TEC and Ionosondes, SPACEWEATHER-THE INTERNATIONAL JOURNAL OF RESEARCH AND APPLICATIONS, Vol.
19(12), doi:10.1029/2021SW002878, DEC 2021.
Hashimoto, Kozo; Shinbori, Atsuki; Otsuka, Yuichi; Tsuchiya, Fuminori; Kumamoto, Atsushi;
Kasahara, Yoshiya; Matsuoka, Ayako; Nagano, Isamu; Miyoshi, Yoshizumi; Yokoyama,
Tatsuhiro, Propagation Mechanism of Medium Wave Broadcasting Waves Observed by the Arase
Satellite: Hectometric Line Spectra, J. Geophys. Res.-Space Phys., Vol. 126(11),doi:10.1029/2021JA029813, Nov. 2021.
Jiang, Chunhua; Yokoyama, Tatsuhiro; Wei, Lehui; Yang, Guobin; Zhao, Zhengyu, Nonlinear
Simulation of Ionospheric Irregularities at Mars, ASTROPHYSICAL JOURNAL, Vol. 909(1),14doi:10.3847/1538-4357/abdc1d, MAR 2021.
Kim, Gwang Su; Kim, Yong Ha; Choi, Byung-Kyu; Hong, Junseok; Ssessanga,
Nicholas,Characterizing ionospheric disturbances caused by the North Korean rocket (Hwasung15) using a four-dimensional variational (4D-VAR) data-assimilation model, JOURNAL OF THE
KOREAN PHYSICAL SOCIETY, Vol. 79(8), doi:10.1007/s40042-021-00282-0, OCT 2021.
Mungufeni, Patrick; Kim, Yong Ha; Ssessenga, Nicholas, Observations of ionospheric irregularities
and its correspondence with sporadic e occurrence over South Korea and Japan, ADVANCES INSPACE RESEARCH, Vol. 67(7), doi:10.1016/j.asr.2021.01.013, APR 1, 2021.
Panasenko, Sergii, V; Kotov, Dmytro, V; Otsuka, Yuichi; Yamamoto, Mamoru; Hashiguchi, Hiroyuki;
Richards, Philip G.; Truhlik, Vladimir; Bogomaz, Oleksandr, V; Shulha, Maryna O.; Zhivolup,
Taras G.; Domnin, Igor F.
, Coupled investigations of ionosphere variations over
European and Japanese regions: observations, comparative analysis, and validation of models
and facilities, PROGRESS IN EARTH AND PLANETARY SCIENCE, Vol. 8(1),doi:10.1186/s40645-021-00441-8, AUG 11, 2021.
Ssessanga, Nicholas; Yamamoto, Mamoru; Saito, Susumu; Saito, Akinori; Nishioka, Michi,
Complementing regional ground GNSS-STEC computerized ionospheric tomography (CIT) with
ionosonde data assimilation, GPS SOLUTIONS, Vol. 25(3), doi:10.1007/s10291-021-01133-y,
JUL 2021.
Ssessanga, Nicholas; Yamamoto, Mamoru; Saito, Susumu, Assessing the performance of a Northeast
Asia Japan-centered 3-D ionosphere specification technique during the 2015 St. Patrick's day
geomagnetic storm, EARTH PLANETS AND SPACE, Vol. 73(1), doi:10.1186/s40623-02101447-8, JUN 9, 2021.
<Atmospheric studies>
Tatsuhiro Mori, Yutaka Kondo, Sho Ohata, Kumiko Goto-Azuma, Kaori Fukuda, Yoshimi OgawaTsukagawa, Nobuhiro Moteki, Atsushi Yoshida, Makoto Koike, P. R. Sinha, Naga Oshima,
Hitoshi Matsui, Yutaka Tobo, Masanori Yabuki, Wenche Aas, Seasonal Variation of Wet
Deposition of Black Carbon at Ny-angstrom lesund, Svalbard, JOURNAL OF GEOPHYSICALRESEARCH-ATMOSPHERES 126(12), June 2021.
Keiichiro Hara, Chiharu Nishita-Hara, Kazuo Osada, Masanori Yabuki, Takashi Yamanouchi,
Characterization of aerosol number size distributions and their effect on cloud properties at
Syowa Station, Antarctica, Atmospheric Chemistry and Physics 21(15) 12155-12172, August
2021.
Marzuki Marzuki, Helmi Yusnaini, Ravidho Ramadhan, Fredolin Tangang, Abdul Azim Bin Amirudin,
Hiroyuki Hashiguchi, Toyoshi Shimomai, Mutya Vonnisa, Characteristics of Precipitation
Diurnal Cycle over a Mountainous Area of Sumatra Island including MJO and Seasonal
Signatures Based on the 15-Year Optical Rain Gauge Data, WRF Model and IMERG,
Atmosphere 13(1) 63-63, December 2021.
Ravidho Ramadhan, Marzuki Marzuki, Helmi Yusnaini, Robi Muharsyah, Wiwit Suryanto, Sholihun
Sholihun, Mutya Vonnisa, Alessandro Battaglia, Hiroyuki Hashiguchi, Capability of GPM
IMERG Products for Extreme Precipitation Analysis over the Indonesian Maritime Continent,
Remote Sensing 14(2) 412-412, January 2022.
Balaji Kumar Seela, Jayalakshmi Janapati, Pay-Liam Lin, Chen-Hau Lan, Ryuichi Shirooka, Hiroyuki
Hashiguchi, K. Krishna Reddy, Raindrop Size Distribution Characteristics of the Western PacificTropical Cyclones Measured in the Palau Islands, Remote Sensing 14(3) 470-470, January 2022.
Ravidho Ramadhan, Helmi Yusnaini, Marzuki Marzuki, Robi Muharsyah, Wiwit Suryanto, Sholihun
Sholihun, Mutya Vonnisa, Harmadi Harmadi, Ayu Putri Ningsih, Alessandro Battaglia, Hiroyuki
Hashiguchi, Ali Tokay, Evaluation of GPM IMERG Performance Using Gauge Data overIndonesian Maritime Continent at Different Time Scales, Remote Sensing 14(5) 1172-1172,
February 2022.
Tomoya Matsuda, Hiroyuki Hashiguchi, DDMA-MIMO Observations With the MU Radar: Validation
by Measuring a Beam Broadening Effect, IEEE Journal of Selected Topics in Applied Earth
Observations and Remote Sensing 16 3083-3091, April 2023.
Mutya Vonnisa, Toyoshi Shimomai, Hiroyuki Hashiguchi, Marzuki Marzuki, Retrieval of Vertical
Structure of Raindrop Size Distribution from Equatorial Atmosphere Radar and Boundary Layer
15

RadarEmerging Science Journal 6(3) 448-459, April 2022.
Keiichiro HARA, Kazuo OSADA, Masanori YABUKI, Masahiko HAYASHI, Masataka SHIOBARA,
Naohiko HIRASAWA, Takashi YAMANOUCHI, Long-term monitoring of condensation nuclei
concentrations at Syowa Station, Antarctic, Polar Data Journal 7 13-23, April 2023.
Kaoru Sato, Yoshihiro Tomikawa, Masashi Kohma, Ryosuke Yasui, Dai Koshin, Haruka Okui, Shingo
Watanabe, Kazuyuki Miyazaki, Masaki Tsutsumi, Damian Murphy, Chris Meek, Yufang Tian,
Manfred Ern, Gerd Baumgarten, Jorge L. Chau, Xinzhao Chu, Richard Collins, Patrick J. Espy,
Hiroyuki Hashiguchi, Andrew J. Kavanagh, Ralph Latteck, Franz‐Josef Lubken, Marco Milla,
Satonori Nozawa, Yasunobu Ogawa, Kazuo Shiokawa, M. Joan Alexander, Takuji Nakamura,
William E. Ward, Interhemispheric Coupling Study by Observations and Modelling (ICSOM):
Concept, Campaigns, and Initial Results, Journal of Geophysical Research: Atmospheres, May
2023.
<Ionospheric studies>
Sergii Panasenko, Dmytro Kotov, Yuichi Otsuka, Mamoru Yamamoto, Hiroyuki Hashiguchi, Philip G.
Richards, Vladimir Truhlik, Oleksandr Bogomaz, Maryna O. Shulha, Taras G. Zhivolup, Igor F.
Domnin, Coupled investigations of ionosphere variations over European and Japanese regions:observations, comparative analysis, and validation of models and facilities, PROGRESS IN
EARTH AND PLANETARY SCIENCE 8(1), August 2021.
Weizheng Fu, Nicholas Ssessanga, Tatsuhiro Yokoyama, Mamoru Yamamoto, High-Resolution 3-D
Imaging of Daytime Sporadic-E Over Japan by Using GNSS TEC and Ionosondes, SPACEWEATHER-THE INTERNATIONAL JOURNAL OF RESEARCH AND APPLICATIONS
19(12), December 2021.
Lianhuan Hu, Guozhu Li, Zonghua Ding, Wenjie Sun, Xiukuan Zhao, Haiyong Xie, Zhengping Zhu,
Tatsuhiro Yokoyama, Jiaping Lan, Zhaoguo Huang, Baiqi Ning, Fast Ionogram Observations ofAscending Thin Layers Locally Transported from the E to F Region at Equatorial and Low
Latitudes, Remote Sensing 14(22), November 2022.
Chunhua Jiang, Lehui Wei, Tatsuhiro Yokoyama, Jiyao Xu, Kun Wu, Wei Yuan, Jing Liu, Tongxin Liu,
Guobin Yang, Zhengyu Zhao, Upwelling coherent backscatter plumes observed with ionosondes
in low-latitude region, Journal of Space Weather and Space Climate 12, 2022.
Tatsuhiro Yokoyama, Rieko Takagi, Mamoru Yamamoto, Solar and geomagnetic activity dependenceof 150-km echoes observed by the Equatorial Atmosphere Radar in Indonesia, Earth, Planets andSpace 74(1), December 2022.
Weizheng Fu, Tatsuhiro Yokoyama, Nicholas Ssessanga, Mamoru Yamamoto, Peng Liu, On using adouble-thin-shell approach and TEC perturbation component to sound night-time mid-latitude EF coupling, Earth, Planets and Space 74(1), December 2022.
A. O. Afolayan, J. S. Mandeep, M. Abdullah, N. S A Hamid, T. Yokoyama, Effect of the seed
perturbation amplitude on the equatorial spread F initiation during solar minimum, Advances inSpace Research 71(1) 255-267, January 2023.
Weizheng Fu, Tatsuhiro Yokoyama, Nicholas Ssessanga, Guanyi Ma, Mamoru Yamamoto, Nighttime
Midlatitude E-F Coupling in Geomagnetic Conjugate Ionospheres: A Double Thin Shell Modeland a Multi-Source Data Investigation, Journal of Geophysical Research: Space Physics 128(3),3.4. National Institute for Information and Communications Technology (NICT)
Chen, G., Y. Li, S. Zhang, B. Ning, W. Gong, A. Yoshikawa, K. Hozumi, T. Tsugawa, Z. Wang, MultiInstrument Observations of the Atmospheric and Ionospheric Response to the 2013 Sudden
Stratospheric Warming Over Eastern Asia Region, IEEE Transactions on Geoscience and Remote
Sensing, vol. 58, no. 2, pp. 1232-1243, doi:10.1109/TGRS.2019.2944677, 2020.
Ghosh, P., Otsuka, Y., Mani, S., and Shinagawa, H. Day-to-day variation of pre-reversal enhancementin the equatorial ionosphere based on GAIA model simulations. Earth Planets Space 72, 93.
https://doi.org/10.1186/s40623-020-01228-9, 2020
Joshi, L. M., L. C. Tsai, S. Y. Su, Y. Otsuka, T. Yokoyama, M. Yamamoto, S. Sarkhel, K. Hozumi, C.
H. Lu, Investigation of spatio-temporal morphology of plasma bubbles based on EAR
16observations, J. Geophys. Res. Space Physics, Vol. 124, doi:10.1029/2019JA026839, 2019.
Liu, H., C. Tao, H. Jin, Y. Nakamozo, Circulation and Tides in a Cooler Upper Atmosphere: Dynamical
Effectsof
CO2
Doubling,
Geophys.
Res.
Lett.,
47,
e2020GL087413,
doi.org:10.1029/2020GL087413, 2020
Sakata, R., Seki, K., Sakai, S., Terada, N., Shinagawa, H., & Tanaka, T., Effects of an intrinsic
magnetic field on ion loss from ancient Mars based on multispecies MHD simulations. JournalofGeophysicalResearch:Space
Physics,
125,
e2019JA026945.
https://doi.org/10.1029/2019JA026945, 2020
Thammavongsy, P., P. Supnithi, W. Phakphisut, K. Hozumi, T. Tsugawa, Spread-F prediction modelfor the equatorial Chumphon station, Thailand, Advances in Space Research, Vol. 65, No 1, pp.
152-162, https://doi.org/10.1016/j.asr.2019.09.040, 2020.
Tulasi, R.T., K. K. Ajith, T. Yokoyama, M. Yamamoto, K. Hozumi, K. Shiokawa, Y. Otsuka, G. Li,
Dilatory and downward development of 3-meter scale irregularities in the Funnel-like region of
a rapidly rising Equatorial Plasma Bubble, GRL, 47(13), https://doi.org/10.1029/2020GL087256,
2020.
Hozumi, K., M. Ishii, S. Saito, T. Maruyama, H. Nakata, T. Tsugawa, HF-START: Application in Aidof Radio Communications/Navigation, In: Electronic Navigation Research Institute (eds) Air
Traffic Management and Systems III. EIWAC 2017. Lecture Notes in Electrical Engineering, vol555. Springer, Singapore. https://doi.org/10.1007/978-981-13-7086-1_19, 2019.
Yokoyama, T., Jin, H., Shinagawa, H., & Liu, H., Seeding of equatorial plasma bubbles by verticalneutralwind.
GeophysicalResearch
Letters,
46,
7088–7095.
https://doi.org/10.1029/2019GL083629, 2019
Yamazaki, Y., C. Stoll, J. Matzka, H. X. Liu, and C. Tao, Interannual variability of the daytime
equatorial ionospheric electric field, J. Geophys. Res., 123, 4241-4256,
doi:10.1029/2017JA025165, 2018.
Ajith, K. K., S. Tulasi Ram, G. Z. Li, M. Yamamoto, K. Hozumi, C. Y. Yatini, and P. Supnithi, “On
the solar activity dependence of midnight equatorial plasma bubbles during June solstice periods”,
Earth and Planetary Physics, 5, pp. 1–9, doi: 10.26464/epp2021039, 2021.
Andoh S., A. Saito, H. Shinagawa, Temporal evolution of three-dimensional structures of metal ion
layer around Japan simulated by a mid-latitude ionospheric model, J. Geophys. Res. Space
Physics, 116, 6. https://doi.org/10.1029/2021JA029267, 2021.
Currie, J. L., B. A. Carter, J. Retterer, T. Dao, R. Pradipta, R. Caton, K. Groves, Y. Otsuka, T.
Yokoyama, K. Hozumi, T Le Truong, M. Terkildsen, "On the Generation of an Unseasonal EPB
Over
South
East
Asia",JGR:
Space
Physics,
126,
e2020JA028724,
https://doi.org/10.1029/2020JA028724, 2021.
Hosokawa, K., K. Kimura, J. Sakai, S. Saito, I. Tomizawa, M. Nishioka, T. Tsugawa, M. Ishii,
Visualizing sporadic E using aeronautical navigation signals at VHF frequencies, J. Space
Weather Space Clim. 11 6, DOI: 10.1051/swsc/2020075, 2021
Ishii, M., D. Shiota, C. Tao, Y. Ebihara, H. Fujiwara, T. Ishii, K. Ichimoto, R. Kataoka, K. Koga, Y.
Kubo, K. Kusano, Y. Miyoshi, T. Nagatsuma, A. Nakamizo, M. Nakamura, M. Nishioka, S. Saito,
T. Sato, T. Tsugawa, and S. Yoden, Space weather benchmarks on Japanese society, Earth, Planets
and Space, 73:108, https://doi.org/10.1186/s40623-021-01420-5, 2021
Ishii, M., Takizawa, O., Marubashi, K., and Den. M., History of Space Weather Research andOperation in Japan and New Emphasis in Southeast Asia, Radio Science 56, 3,
https://doi.org/10.1029/2020RS007162, 2021
Kikuchi, T., J. Chum, I. Tomizawa; K. K. Hashimoto, K. Hosokawa, Y. Ebihara, K. Hozumi, P.
Supnithi, "Penetration of the electric fields of the geomagnetic sudden commencement over the
globe as observed with the HF Doppler sounders and magnetometers", Earth Planets Space, 73,
10, https://doi.org/10.1186/s40623-020-01350-8, 2021.
Kenpankho, P, A. Chaichana, K. Trachu, P. Supnithi, K. Hozumi, “Real-time GPS receiver bias
estimation”, Advances in Space Research, https://doi.org/10.1016/j.asr.2021.01.032, 2021.
Liu, H., C. Tao, H. Jin, and T. Abe, Examining geomagnetic activity effects on CO2-driven trend in
the thermosphere and ionosphere using ideal model experiments with GAIA, J. Geophys. Res.:
Space Phys., 126, 1, https://doi.org/10.1029/2020JA028607, 2021
17

Maruyama, T., K. Hozumi, G. Ma, P. Supnithi, N. Tongkasem, and Q. Wan, Double-thin-shell
approach to deriving total electron content from GNSS signals and implications for ionospheric
dynamics near the magnetic equator, Earth, Planets and Space, 73: 109,https://doi.org/10.1186/s40623-021-01427-y, 2021
Meenakshi, S., S. Sridharan, J. Solomon Ivan, K. Hozumi, C. Y. Yatini, T. Yokoyama, and H.
Hashiguchi, “Anomalous Increase in the Occurrence of Post-Midnight FAI Radar Echoes in
September 2019 and Its Relation With the Austral Sudden Stratospheric Warming”, JGR: Space
Physics, 126, e2020JA028902, https://doi.org/10.1029/2020JA028902, 2021.
Nishioka, M., S. Saito, C. Tao, D. Shiota, T. Tsugawa, and M. Ishii, Statistical analysis of ionospheric
total electron content (TEC): long-term estimation of extreme TEC in Japan, Earth Planets Space,73:52, https://doi.org/10.1186/s40623-021-01374-8, 2021
Nose M., Y. Murayama, M. Nishioka, M. Ihii, K. Imai, T. Kinoshita, Y. Koyama, and T. Sagara, Datapublication and data citation in the field of geospace science: Present status and our practice, IPSJ
Transactions on Digital Practice, Vol.2, No.2, 2021
Otsuka, Y., Shinbori, A., Tsugawa, T. and M. Nishioka, Solar activity dependence of medium-scale
traveling ionospheric disturbances using GPS receivers in Japan. Earth Planets Space 73, 22.
https://doi.org/10.1186/s40623-020-01353-5, 2021
Sakai S., Seki, K., Terada, N., Shinagawa, H., Sakata, R., Tanaka, T., Ebihara, Y., Effects of the IMF
direction on atmospheric escape from a Mars-like planet under weak intrinsic magnetic field
conditions. Journal of Geophysical Research: Space Physics, 126, e2020JA028485.
https://doi.org/10.1029/2020JA028485, 2021
Sarudin, I., N. S. A Hamid, M. Abdullah, S. M Buhari, K. Shiokawa, Y. Otsuka, K. Hozumi, and P.
Jamjareegulgarn, “Influence of Zonal Wind Velocity Variation on Equatorial Plasma Bubble
Occurrences Over Southeast Asia”, JGR: Space Physics, 126, e2020JA028994,
https://doi.org/10.1029/2020JA028994, 2021.
Shinagawa, H., C. Tao, H. Jin, Y. Miyoshi, and H. Fujiwara, Numerical prediction of sporadic E layer
occurrence using GAIA, Earth Planets Space, 73:28, https://doi.org/10.1186/s40623-020-01330y, 2021.
Shinbori, A., Otsuka, Y., Tsugawa, T., Nishioka, M., Kumamoto, A., Tsuchiya, F., S. Matsuda, Y.
Kasahara, and A. Matsuoka, Relationship between the locations of the midlatitude trough andplasmapause using GNSS-TEC and Arase satellite observation data. Journal of GeophysicalResearch: Space Physics, 126, e2020JA028943. https://doi.org/10.1029/2020JA028943, 2021.
Sivakandan, M., Y. Otsuka, P. Ghosh, H. Shinagawa, A. Shinbori, Y. Miyoshi, Comparison of seasonal
and longitudinal variation of daytime MSTID activity using GPS observation and GAIA
simulations, Earth, Planets and Space, 73, 35. https://doi.org/10.1186/s40623-021-01369-5, 2021.
Thanakulketsarat, T, T. Sopon, W. Phakphisut, K. Hozumi and W. Wongtrairat, “Ionograms Scaling by
Using the Convolutional Neural Network”, 2021 International Electrical Engineering Congress(iEECON2021), Thailand, pp. 245-248, 2021.
Watanabe, K., Jin, H., Nishimoto, S. et al. Model-based reproduction and validation of the total spectraof a solar flare and their impact on the global environment at the X9.3 event of September 6,
2017. Earth Planets Space 73, 96. https://doi.org/10.1186/s40623-021-01376-6, 2021.
Ajith, K. K., G. Li, S. T. Ram, M. Yamamoto, K. Hozumi, P. Abadi, H. Xie, “On the seeding of periodic
equatorial plasma bubbles by gravity waves associated with tropical cyclone: A case study", J.
Geophys. Res. Space Physics, 125 (10), e2020JA028003. https://doi.org/10.1029/2020JA028003,
2020.
Andoh, S., A. Saito, H. Shinagawa, K. M. Ejiri, First simulations of day-to-day variability of midlatitude sporadic E layer structures, Earth Planets Space, 72, 165. https://doi.org/10.1186/s40623020-01299-8, 2020
Tao, C., M. Nishioka, S. Saito, D. Shiota, K. Watanabe, N. Nishizuka, T. Tsugawa, and M. Ishii,
Statistical analysis of short-wave fadeout for extreme space weather event estimation Earth
Planets Space, 72:173, https://doi.org/10.1186/s40623-020-01278-z, 2020
Tao, C., H. Jin, Y. Miyoshi, H. Shinagawa, H. Fujiwara, M. Nishioka, and M. Ishiim, Numerical
forecast of the upper atmosphere and ionosphere using GAIA, Earth Planets Space, 72:178,
https://doi.org/10.1186/s40623-020-01307-x, 2020
18

Thu, H. P. T., C. A. Mazaudier, M. L. Huy, D. N. Thanh, H. L. Viet, N. L. Thi, K. Hozumi, T. L. Truong,"Comparison between IRI-2012, IRI-2016 models and F2 peak parameters in two stations of the
EIA in Vietnam during different solar activity periods", Advances in Space Research, 65 (5), pp.
2076-2092, https://doi.org/ 10.1016/j.asr.2020.07.017, 2020.
Tongkasem, N., L. M. M. Myint, P. Supnithi, T. Komolmis and K. Hozumi, “The disturbance effects
on single frequency GPS positioning at low geomagnetic latitude stations in Thailand”,
International Technical Conference on Circuits/Systems, Computers and Communications (ITCCSCC), Nagoya, Japan, pp. 411-415, 2020.
Tulasi, R. T., K. K. Ajith, T. Yokoyama, M. Yamamoto, K. Hozumi, K. Shiokawa, Y. Otsuka, G. Li,"Dilatory and downward development of 3-meter scale irregularities in the Funnel-like region ofarapidlyrisingEquatorial
Plasma
Bubble",GRL,
47(13),
https://doi.org/10.1029/2020GL087256, 2020.
Abadi, P. Ahmad, U.A.;Otsuka, Y. Jamjareegulgarn, P. Martiningrum, D.R. Faturahman, A. Perwitasari,S. Saputra, R.E. Septiawan, R.R. Modeling Post-Sunset Equatorial Spread-F Occurrence as a
Function of EveningUpward Plasma Drift Using Logistic Regression, Deduced from Ionosondes
in Southeast Asia. RemoteSens. 14, 1896. https://doi.org/10.3390/rs14081896, 2022
Andoh, S., A. Saito, and H. Shinagawa, Numerical simulations on day-to-day variations of lowlatitude Es layers at Arecibo. Geophysical Research Letters, 49, e2021GL097473.
https://doi.org/10.1029/2021GL097473, 2022
Hazeyama, W., Nishitani, N., Hori, T.,Nakamura, T., & Perwitasari, S., Statistical study of seasonaland solar activity dependence of nighttime MSTIDs occurrence using the SuperDARN Hokkaido
pair of radars. Journal of Geophysical Research: Space Physics,127, e2021JA029965.
https://doi.org/10.1029/2021JA029965, 2022
Hozumi, Y., Tsuda, T. T., Hosokawa, K., Ando, Y., Suzuki, H., Murata, T., & Nakamura, T., Horizontal
Movement of Polar Mesospheric Clouds observed from the Himawari‐8 Geostationary
Meteorological Satellite. Journal of Geophysical Research: Atmospheres, 1–14.
https://doi.org/10.1029/2021jd035081, 2021
Kam, H., Song, I.-S., Kim, J.-H., Kim,Y. H., Song, B.-G., Nakamura, T., Tomikawa, Y., Kogure, M.,
Ejiri, M.K., Perwitasari, S., Tsutsumi, M., Kwak, Y.-S., Mesospheric short-period gravity waves
in the Antarctic Peninsula observed in all-sky airglow images and their possible source locations.
JournalofGeophysicalResearch:
Atmospheres,126,
e2021JD035842.
https://doi.org/10.1029/2021JD035842, 2021
Kusano, K., et al. (*H. Shinagawa, M. Ishii, H. Jin, C. Tao, K. Hozumi co-authors), PSTEP: projectforsolar-terrestrial
environment
prediction,
Earth
Planets
Space,
73:159.
https://doi.org/10.1186/s40623-021-01486-1, 2021
Liu, Q., Hernández-Pajares, M., Lyu, H., Nishioka, M., Yang, H., Monte-Moreno, E., et al.,Ionospheric storm scale index based on high time resolution UPC-IonSAT global ionosphericmaps (IsUG). Space Weather, 19, e2021SW002853. https://doi.org/10.1029/2021SW002853,
2021
Oigawa, T., H. Shinagawa, and S. Taguchi, Time-dependent responses of the neutral mass density to
fixed magnetospheric energy inputs into the cusp region in the thermosphere during a period oflarge IMF BY: a high-resolution two-dimensional local modeling, Earth Planets Space, 73:201.
https://doi.org/10.1186/s40623-021-01535-9, 2021
Perwitasari, S., Nakamura, T., Tsugawa, T., Nishioka, M., Tomikawa, Y., Ejiri, M. K., et al.,Propagation direction analyses of medium-scale traveling ionospheric disturbances observed
over North America with GPS-TEC perturbation maps by three-dimensional spectral analysis
method. Journal of Geophysical Research: Space Physics, 127, e2020JA028791, 2022
Shinbori, A., Otsuka, Y., Sori, T., Tsugawa, T., & Nishioka, M, Statistical behavior of large-scale
ionospheric disturbances from high latitudes to mid-latitudes during geomagnetic storms using
20-yr GNSS-TEC data: Dependence on season and storm intensity. Journal of GeophysicalResearch: Space Physics, 127, e2021JA029687, 2022
Shinbori, A., Otsuka, Y., Tsugawa, T., Nishioka, M., Kumamoto, A., Tsuchiya, F., et al., Relationshipbetween the locations of the midlatitude trough and plasmapause using GNSS-TEC and Arasesatellite observation data. Journal of Geophysical Research: Space Physics, 126, e2020JA028943,
19

2021
Sori, Takuya, Atsuki Shinbori, Yuichi Otsuka, Takuya Tsugawa, Michi Nishioka, and Akimasa
Yoshikawa, Generation mechanisms of plasma density irregularity in the equatorial ionosphere
during a geomagnetic storm on December 21 and 22, 2014, J. Geophys. Res.: Space Physics, 127,e2021JA030240. https://doi.org/10.1029/2021JA030240, 2022
Sori, T., A. Shinbori, Y. Otsuka, T. Tsugawa, and M. Nishioka, The occurrence feature of plasma
bubbles in the equatorial to midlatitude ionosphere during geomagnetic storms using long-term
GNSS-TEC data, J. Geophys. Res.: Space Physics, 126, e2020JA029010.
https://doi.org/10.1029/2020JA029010, 2021
Suzuki, H., Matsumoto, A., Dalin, P., Nakamura, Y., Ishii, S., Sakanoi, K., Sakaguchi, K., Takada, T.,
Tsuda, T. T., & Hozumi, Y., Capability of airline jets as an observation platform for noctilucent
clouds at middle latitudes. Progress in Earth and Planetary Science, 9(1).
https://doi.org/10.1186/s40645-022-00469-4, 2022
Tsuda, T. T., Hozumi, Y., Kawaura, K., Tatsuzawa, K., Ando, Y., Hosokawa, K., Suzuki, H., Murata,
K. T., Nakamura, T., Yue, J., Nielsen, K., Detection of Polar Mesospheric Clouds Utilizing
Himawari-8/AHI
Full-Disk
Images.
Earth
and
Space
Science,9(1).
https://doi.org/10.1029/2021EA002076, 2022
Yamazaki, Y., C. Arras, S. Andoh, Y. Miyoshi, H. Shinagawa, B. J. Harding, T. J. Immel, S. SobhkhizMiandehi, and C. Stolle, Examining the wind shear theory of sporadic E with ICON/MIGHTI
winds and COSMIC-2 Radio 2 occultation data. Geophysical Research Letters, 49,
e2021GL096202, https://doi.org/10.1029/2021GL096202, 2022
Andoh, S., Saito, A. & Shinagawa, H. Simulation of horizontal sporadic E layer movement driven byatmospheric tides. Earth Planets Space, 75, 86, https://doi.org/10.1186/s40623-023-01837-0,
2023
Iyemori Toshihiko, Michi Nishioka, Yuichi Otsuka and Atsuki Shinbori (2022). A confirmation ofvertical acoustic resonance and field‑aligned current generation just after the 2022 Hunga Tonga
Hunga Ha’apai volcanic eruption, Earth Planets Space, 74:103, https://doi.org/10.1186/s40623022-01653-y
Kataoka, R., D. Shiota, H. Fujiwara, H. Jin, C. Tao, H. Shinagawa, and Y. Miyoshi (2022), Unexpected
space weather causing the reentry of 38 Starlink satellites in February 2022, Journal of Space
Weather and Space Climate, DOI: 10.1051/swsc/2022034.
Kogure, M., Liu, H., and Jin, H. (2023). Impact of tropospheric ozone modulation due to El Niño on
tides
in
the
MLT.
GeophysicalResearch
Letters,50,
e2023GL102790.
https://doi.org/10.1029/2023GL102790
Kogure, M., Liu, H., and Tao, C. (2022). Mechanisms for zonal mean wind responses in thethermosphere to doubled CO2 concentration. Journal of Geophysical Research: Space Physics,
127, e2022JA030643. https://doi.org/10.1029/2022JA030643.
Miyoshi, Y., and Shinagawa, H. (2023). Upward propagation of gravity waves and ionosphericperturbations triggered by the 2022 Hunga‑Tonga volcanic eruption. Earth Planets Space, 75:68.
https://doi.org/10.1186/s40623-023-01827-2
Nakamura, Y., Terada, K., Tao, C., Terada, N., Kasaba, Y., Leblanc, F., et al. Simulation of Dawn-toDusk Electric Field in the Jovian Inner Magnetosphere via Region 2-like Field-Aligned Current,
Journal of Geophysical Research: Space Physics, accepted (2023/6/2).
Nakamura, Y., Terada, K., Tao, C., Terada, N., Kasaba, Y., Leblanc, F., et al. (2022). Effect of meteoricions on ionospheric conductance at Jupiter. Journal of Geophysical Research: Space Physics, 127,
e2022JA030312. https://doi.org/10.1029/2022JA030312
Nishimoto, S., Watanabe, K., Jin, H. et al. Statistical analysis for EUV dynamic spectra and theirimpact on the ionosphere during solar flares. Earth Planets Space 75, 30 (2023).
https://doi.org/10.1186/s40623-023-01788-6
Rajesh, P. K., Lin, C. C. H., Lin, J. T., Lin, C. Y., Liu, J. Y., Matsuo, T., et al. (2022). Extreme poleward
expanding super plasma bubbles over Asia-Pacific region triggered by Tonga volcano eruption
during the recovery-phase of geomagnetic storm. Geophysical Research Letters, 49,
e2022GL099798. https://doi.org/10.1029/2022GL099798
Sakai, S., Seki, K., Terada, N., Shinagawa, H., Sakata, R., Tanaka, T., and Ebihara, Y. (2023). Enhanced
20

ion escape rate during IMF rotation under weak intrinsic magnetic field conditions on a Marslike planet. Journal of Geophysical Research: Space Physics, 128, e2022JA030510.
https://doi.org/10.1029/2022JA030510
Sakata, R., Seki, K., Sakai, S., Terada, N., H. Shinagawa, H., and Tanaka, T. (2022). Multispecies
MHD study of ion escape at ancient Mars: Effects of an intrinsic magnetic field and solar XUVradiation. Journal of Geophysical Research: Space Physics, 127, e2022JA030427.
https://doi.org/10.1029/2022JA030427
Shinbori, A., Y. Otsuka, T. Sori, M. Nishioka, S. Perwitasari, T. Tsuda, and N. Nishitani (2022).
Electromagnetic conjugacy of ionospheric disturbances after the 2022 Hunga Tonga-Hunga
Ha’apai volcanic eruption as seen in GNSS-TEC and SuperDARN Hokkaido pair of radars
observations. Earth Planets Space 74, 106. https://doi.org/10.1186/s40623-022-01665-8
Sori T, A. Shinbori, Y. Otsuka, M. Nishioka, S. Perwitasari, N. Nishitani (2023). First detection of
mid-latitude plasma bubble by SuperDARN during a geomagnetic storm on May 27 and 28, 2017,
JournalofGeophysicalResearch:Space
Physics,
128,
e2022JA031157.
https://doi.org/10.1029/2022JA031157
Sori T., A. Shinbori, Y. Otsuka, M. Nishioka, S. Perwitasari (2023). Dependence of ionospheric
responses on solar wind dynamic pressure during geomagnetic storms using global long-term
GNSS-TEC data, Journal of Geophysical Research: Space Physics, 128, e2022JA030913.
https://doi.org/10.1029/2022JA030913
Sori, T., Y. Otsuka, A. Shinbori, M. Nishioka, and S. Perwitasari (2022). Geomagnetic conjugacy ofplasma bubbles extending to mid-latitudes during a geomagnetic storm on March 1, 2013. Earth
Planets Space 74, 120. https://doi.org/10.1186/s40623-022-01682-7
3.5. Electronic Navigation Research Institute (ENRI)
J. Budtho, P. Supnithi, and S. Saito, Single-Frequency Time-Step Ionospheric Delay Gradient
Estimation
at
Low-Latitude
Stations,
IEEE
Access,8,
2020,
DOI:10.1109/ACCESS.2020.3035247
Saito, S., Hosokawa, K., Sakai, J., Tomizawa, I., Study of structures of the sporadic E layer by using
dense GNSS network observations, NAVIGATION: Journal of the Institute of Navigation, 68,
751-758, 2021, doi: 10.1002/navi.454
Saito, S. Ionospheric disturbances observed over Japan following the eruption of Hunga Tonga-Hunga
Ha’apai on 15 January 2022. Earth Planets Space, 74, 2022, doi:10.1186/s40623-022-01619-0
Ssessanga, N., Yamamoto, M., Saito, S., Assessing the performance of a Northeast Asia Japan-centered
3-D ionosphere specification technique during the 2015 St. Patrick’s day geomagnetic storm,
Earth Planets Space 73, 2021, doi:10.1186/s40623-021-01447-8
Nguyen Thanh, D., Le Huy, M., Mazaudier, C. A., Fleury, R., Saito, S., Nguyen Chien, T., Thi Thu, H.
P., Le Truong, T., Nguyen Thi, M., Characterization of ionospheric irregularities over Vietnam
and adjacent region for the 2008-2018 period, Vietnam Journal of Earth Sciences, 43, 465-484,
2021.
Supriadi, S., Abidin, H. Z., Wijaya, D. D., Abadi, P., Saito, S., Dwiko, U. P., Construction of nominal
ionospheric gradient using satellite pair based on GNSS CORS Observation in Indonesia, Earth
Planets Space, in press.
Thi Thu, H. P., Mazaudier, C. A., Le Huy, M., Saito, S., Hozumi, K., Nguyen Thanh, D., Luong Thi,N., Nighttime morphology of vertical plasma drifts over Vietnam during different seasons andphasesofsunspot
cycles,AdvancesinSpace
Research,inpress,
https://doi.org/10.1016/j.asr.2022.04.010.
Saito, S., Yoshihara, T., Murphy, T., Harris, M., Balvedi, G., McGraw, G., Wichgers, J., Lavik, L.,
Topland, M., Tuffaha, M., Validation of Ionospheric Anomaly Monitor for DFMC GBAS underDisturbed Ionospheric Conditions, Proceedings of the 35th International Technical Meeting of
the Satellite Division of The Institute of Navigation (ION GNSS+ 2022) (Peer-reviewd), 31503159, 2022, doi:10.33012/2022.18355
Sophan, S., Myint, L. M. M., Saito, S., Supnithi, P., Performance improvement of the GAGAN
satellite-based augmentation system based on local ionospheric delay estimation in Thailand,21

GPS Solutions, 26:130, 2022, doi:10.1007/s10291-022-01293-5
Bumrungkit, A., Saito, S., Supnithi, P., A study of equatorial plasma bubble structure using VHF radarand GNSS scintillations over the low latitude regions, GPS Solutions, 26:148, 2022,
doi:10.1007/s10291-022-01321-4
Nguyen Thanh, D., Le Huy, M., Amory-Mazaudier, C., Fleury, R., Saito, S., Nguyen Chien, T., Le
Truong, T., Thi Thu, H. P., Nguyen Ha, T., Nguyen Thi, M., Le, Q., Ionospheric quasi-biennial
oscillation of the TEC amplitude of the equatorial ionization anomaly crests from continuous
GPS data in the Southeast Asian region, Vietnam J. of Earth Science, 1-18, 2022,
doi:10.15625/2615-9783/17490
Myint, L. M. M., Hozumi, K., Saito, S. Supnithi, S., Analysis of local geomagnetic index under the
influence of equatorial electrojet (EEJ) at the equatorial Phuket geomagnetic station in Thailand,
Advances in Space Research, 70, 1429-1440, 2022, doi:10.1016/j.asr.2022.06.024
3.6. University of Electro-Communications
Sakai, J., Saito, S., Hosokawa, K., and Tomizawa, I., Anomalous propagation of radio waves fromdistant ILS localizers due to ionospheric sporadic‐E, Space Weather, 18, e2020SW002517, 2020
Kawamura, Y., K. Hosokawa, S. Nozawa, Y. Ogawa, T. Kawabata, S.-I. Oyama, Y. Miyoshi, S. Kurita
and R. Fujii, Estimation of the emission altitude of pulsating aurora using the five-wavelength
photometer, Earth, Planets and Space, 72, 96, 2020
Hosokawa, K., J. Sakai, I. Tomizawa, S. Saito, T. Tsugawa, M. Nishioka and M. Ishii, A monitoring
network for anomalous propagation of aeronautical VHF radio waves due to sporadic E in Japan,
Earth, Planets and Space, 72:88, 2020
Hashimoto K. K., T. Kikuchi, I. Tomizawa, K. Hosokawa, J. Chum, D. Buresova, M. Nose and K.
Koga, Penetration electric fields observed at middle and low latitudes during the 22 June 2015
geomagnetic storm, Earth, Planets and Space, 72, 71, 2020
Hosokawa, K., K. Takami, S. Saito, Y. Ogawa, Y. Otsuka, K. Shiokawa, C.-H. Chen and C.-H. Lin,
Observations of equatorial plasma bubbles using a low-cost 630.0-nm all-sky imager in Ishigaki
Island, Japan, Earth, Planets and Space, 72, 56, 2020
Nanjo, S., Y. Hozumi, K. Hosokawa, R. Kataoka, Y. Miyoshi, S. Oyama, M. Ozaki, K. Shiokawa andS. Kurita, Fine-scale visualization of aurora in a wide area using color digital camera images fromthe International Space Station, Journal of Geophysical Research: Space Physics, 125,https://doi.org/10.1029/2019JA027729, 2020
Hosokawa, K., Y. Miyoshi, M. Ozaki, S.-I. Oyama, Y. Ogawa, S. Kurita, Y. Kasahara, Y. Kasaba, S.
Yagitani, S. Matsuda, F. Tsuchiya, A. Kumamoto, R. Kataoka, K. Shiokawa, T. Raita, E. Turunen,
T. Takashima, I. Shinohara and R. Fujii, Multiple time-scale beats in aurora: precise orchestration
via magnetospheric chorus waves, Scientific Reports, 10, 3380, 2020
Hosokawa, K., A. Kullen, S. E. Milan, J. Reidy, Y. Zou, H. U. Frey, R. Maggiolo, and R. C. Fear,
Aurora in the polar cap: a review, Space Science Review, 216, 15, 2020
Hosokawa, Y. Zou, and Y. Nishimura, Airglow patches in the polar cap region: a review, Space Sci.
Rev., 215, 53, https://doi.org/10.1007/s11214-019-0616-8, 2019
Hosokawa, K., Y. Ogawa, and S. Taguchi, Imaging of polar cap patches with a low-cost airglow
camera: Pilot observations in Svalbard, Norway, Earth, Planets and Space, 71, 115, 2019
Tsuda, T. T., Li, C., Hamada, S., Hosokawa, K., Oyama, S.-I., Nozawa, S., et al., OI 630.0‐nm and N2
1PG emissions in pulsating aurora events observed by an optical spectrograph at Tromsø, Norway,
Journal of Geophysical Research: Space Physics, 125, e2020JA028250, 2020
Sakai, J., Saito, S., Hosokawa, K., and Tomizawa, I., Anomalous propagation of radio waves fromdistant ILS localizers due to ionospheric sporadic‐E, Space Weather, 18, e2020SW002517, 2020
Hosokawa, K., M. Nagata, K. Shiokawa, Y. Otsuka, What controls the luminosity of polar cap airglow
patches?: Implication from airglow measurements in Eureka, Canada in comparison with
SuperDARN convection pattern, Polar Science, 28, https://doi.org/10.1016/j.polar.2020.100608,
2021
Hosokawa, K., Y. Miyoshi, S.-I. Oyama,Y. Ogawa, S. Kurita,Y. Kasahara, Y. Kasaba, S. Yagitani, S.
Matsuda, M. Ozaki, F. Tsuchiya, A. Kumamoto, T. Takashima, I. Shinohara, R. Fujii, Over22

darkening of pulsating aurora, Journal of Geophysical Research: Space Physics, 126,e2020JA028838, https://doi.org/10.1029/2020JA028838, 2021
Hosokawa, K., K., Kimura, J. Sakai, S. Saito, I. Tomizawa, M. Nishioka, T. Tsugawa and M. Ishii,
Visualizing sporadic E using aeronautical navigation signals at VHF frequencies, Journal ofSpace Weather and Space Climate, 11, 6, 2021
Kagawa, A., Hosokawa, K., Ogawa, Y., Ebihara, Y., & Kadokura, A., Occurrence distribution of polar
cap patches: dependences on UT, season and hemisphere. Journal of Geophysical Research:
Space Physics, 125, e2020JA028538, 2021
Kikuchi, T., J. Chum, I. Tomizawa, K. K. Hashimoto, K. Hosokawa, Y. Ebihara, K. Hozumi, and P.
Supnithi, Penetration of the electric fields of the geomagnetic sudden commencement over the
globe as observed with the HF Doppler sounders and magnetometers, Earth Planets Space 73, 10,https://doi.org/10.1186/s40623-020-01350-8, 2021
Díaz Pena, J., J. Semeter, Y. Nishimura, R. Varney, A. Reimer, M. Hairston, M. Zettergren, M. Hirsch,
O. Verkhoglyadova, K. Hosokawa, and K. Shiokawa, Auroral heating of plasma patches due tohigh-latitude reconnection, Journal of Geophysical Research: Space Physics, 126,e2021JA029657, doi:10.1029/2021JA029657, 2021
Nakata, H., K. Nozaki, Y. Oki, K. Hosokawa, K. K. Hashimoto, T. Kikuchi, J. Sakai, I. Tomizawa &S. Saita, Software-defined radio-based HF doppler receiving system, Earth, Planets and Space
volume 73, Article number: 209, doi:10.1186/s40623-021-01547-5, 2021
Nanjo, S., Hozumi, Y., Hosokawa, K., Kataoka, R., Miyoshi, Y., Oyama, S.-I., Periodicities and colorsof pulsating auroras: DSLR camera observations from the International Space Station, Journal ofGeophysical Research: Space Physics, 126, e2021JA029564, doi:10.1029/2021JA029564, 2021
Saito, S, Hosokawa, K., Sakai, J., and Tomizawa, I., Study of structures of the sporadic E layer byusing dense GNSS network observations, NAVIGATION, 68: 751-758, doi:10.1002/navi.454,
2021
Hozumi, Y., Tsuda, T. T., Hosokawa, K., Ando, Y., Suzuki, H., Murata, T., & Nakamura, T., Horizontal
movement of polar mesospheric clouds observed from the Himawari-8 geostationary
meteorological satellite, Journal of Geophysical Research: Atmospheres, 126, e2021JD035081,
doi:10.1029/2021JD035081, 2021
Kikuchi, T., Araki, T., Hashimoto, K. K., Ebihara, Y., Tanaka, T., Nishimura, Y., Vichare, G., Sinha, A.
K., Chum, J., Hosokawa, K., Tomizawa, I., Tanaka, Y. and Kadokura, A., Instantaneous
Achievement of the Hall and Pedersen–Cowling Current Circuits in Northern and Southern
Hemispheres During the Geomagnetic Sudden Commencement on 12 May 2021, Front. Astron.
Space Sci., 9:879314, doi:10.3389/fspas.2022.879314, 2022
Matsushima, R., K. Hosokawa, J. Sakai, Y. Otsuka, M. K. Ejiri, M. Nishioka and T. Tsugawa,
Propagation characteristics of sporadic E and medium-scale traveling ionospheric disturbances(MSTIDs): statistics using HF Doppler and GPS-TEC data in Japan, Earth Planets Space 74, 60,
2022
Tsuda, T. T., Hozumi, Y., Kawaura, K., Tatsuzawa, K., Ando, Y., Hosokawa, K., et al., Detection ofpolar mesospheric clouds utilizing Himawari-8/AHI full-disk images, Earth and Space Science,
9, e2021EA002076, doi:10.1029/2021EA002076, 2022
Nanjo, S., Nozawa, S., Yamamoto, M. Kawabata, T., Johnsen, M. G., Tsuda, T. T., and Hosokawa, K.,
An automated auroral detection system using deep learning: real-time operation in Tromsø,
Norway, Scientific Reports, 12, 8038, https://doi.org/10.1038/s41598-022-11686-8, 2022 - View
3.7 Chiba University
Nakata, H., Takaboshi, K., Takano, T., Tomizawa, I. (2021). Vertical propagation of coseismic
ionospheric disturbances associated with the foreshock of the Tohoku Earthquake observed using
HF Doppler sounding. Journal of Geophysical Research: Space Physics, 126, e2020JA028600.
https://doi.org/10.1029/2020JA028600
T. Miyashita, Takuya Miyashita; Hiroyo Ohya; Fuminori Tsuchiya; Asuka Hirai; Mitsunori Ozaki;
Kazuo Shiokawa; Yoshizumi Miyoshi; Nozomu Nishitani; Mariko Teramoto; Martin Connors;
Simon G. Shepherd; Yoshiya Kasahara; Atsushi Kumamoto; Masafumi Shoji; Iku Shinohara;
23

Hiroyuki Nakata; Toshiaki Takano, "ULF modulation of energetic electron precipitation observed
by VLF/LF radio propagation," in URSI Radio Science Bulletin, vol. 2020, no. 372, pp. 29-40,
March 2020, doi: 10.23919/URSIRSB.2020.9240099.
Hiroyuki Nakata, Kenro Nozaki, Yuhei Oki, Keisuke Hosokawa, Kumiko K. Hashimoto, Takashi
Kikuchi, Jun Sakai, Ichiro Tomizawa, Satoko Saita, Software-defined radio-based HF doppler
receiving system. Earth Planets Space 73, 209 (2021). https://doi.org/10.1186/s40623-02101547-5
Kusano, K., Ichimoto, K., Ishii, M. et al. PSTEP: project for solar–terrestrial environment prediction.
Earth Planets Space 73, 159 (2021). https://doi.org/10.1186/s40623-021-01486-1
Nakata, H., Takaboshi, K., Takano, T., Tomizawa, I. (2021). Vertical propagation of coseismic
ionospheric disturbances associated with the foreshock of the Tohoku Earthquake observed using
HF Doppler sounding. Journal of Geophysical Research: Space Physics, 126, e2020JA028600.
https://doi.org/10.1029/2020JA028600
Tekkan Akashi, Hiroyo Ohya, Fuminori Tsuchiya, Kenro Nozaki, Hiroyuki Nakata, Variation in the
D-region ionosphere after the 2015 Nepal earthquake using LF transmitter signals, Journal of
Atmospheric Electricity, 2021, Volume 40, Issue 1, Pages 1-9, Released November 10, 2021,
Print ISSN 0919-2050, https://doi.org/10.1541/jae.40.1.
Jaroslav Chum, Tereza Šindelářová, Petra Koucká Knížová, Kateřina Podolská, Jan Rusz, Jiří Baše,
Hiroyuki Nakata, Keisuke Hosokawa, Michael Danielides, Carsten Schmidt, Leon Knez, JannYenq Liu, María Graciela Molina, Mariano Fagre, Zama Katamzi-Joseph, Hiroyo Ohya, Tatsuya
Omori, Jan Laštovička, Dalia Obrazová Burešová, Daniel Kouba, Jaroslav Urbář, Vladimír
Truhlík, Atmospheric and ionospheric waves induced by the Hunga eruption on 15 January 2022;
Doppler sounding and infrasound, Geophysical Journal International, Volume 233, Issue 2, May
2023, Pages 1429–1443, https://doi.org/10.1093/gji/ggac517
Yuma Nozaki, Hiroyo Ohya, Fuminori Tsuchiya, Kenro Nozaki, Hiroyuki Nakata, and Kazuo
Shiokawa, "Local Time and Seasonal Variations in the D-Region Ionosphere: Does It Reflect
Sudden Stratospheric Warming Effects?", URSI Science Letters, Volume 4, doi:10.46620/220045, 2022
Kentaro Tanaka, Hiroyo Ohya, Fuminori Tsuchiya, Kenro Nozaki, Mariko Teramoto, Kazuo Shiokawa,
Yoshizumi Miyoshi, Martin Connors, and Hiroyuki Nakata, "Ultra Low Frequency Modulationof Energetic Electron Precipitation in the D-Region Ionosphere in a Magnetically Quiet Time
Using OCTAVE Very Low Frequency and Low Frequency (VLF/LF) Observations", URSI
Science Letters, Volume 4, doi:10.46620/22-0049, 2022
Masaharu Nakayama, Hiroyo Ohya, Fuminori Tsuchiya, Kenro Nozaki, Kazuo Shiokawa, andHiroyuki Nakata, "Horizontal Inhomogeneity in the D-Region Ionosphere During an X-Class
Solar Flare Determined by OCTAVE VLF Observations", URSI Science Letters, Volume 4, doi:
10.46620/22-0050, 2022
3.8. Tohoku University<Earth’s ionospheric and magnetosphere>
Chen, L., K. Shiokawa, Y. Miyoshi, S. Oyama, C.-W. Jun, Y. Ogawa, K. Hosokawa, Y. Inaba, Y.
Kazama, S. Y. Wang, S. W. Y. Tam, T. F. Chang, B. J. Wang, K. Asamura, S. Kasahara, S. Yokota,
T. Hori, K. Keika, Y. Kasaba, A. Kumamoto, F. Tsuchiya, M. Shoji, Y. Kasahara, A. Matsuoka, I.
Shinohara, S. Imajo, S. Nakamura, M. Kitahara, Observation of source plasma and field
variations of a substorm brightening aurora at L~6 by a ground-based camera and the Arasesatellite on 12 October 2017. J. Geophys. Res. Space Phys. 127, e2021JA030072.
https://doi.org/10.1029/2021JA030072, 2022.
Fukizawa M., T. Sakanoi, Y. Miyoshi, Y. Kazama, Y. Katoh, Y. Kasahara, S. Matsuda,A. Kumamoto,
F. Tsuchiya, A. Matsuoka,S. Kurita,S. Nakamura,M. Shoji, M. Teramoto,S. Imajo, I.
Shinohara,S.-Y. Wang,S. W.-Y. Tam,T.-F. Chang,B.-J. Wang,C.-W. Jun, Statistical Study ofApproaching Strong Diffusion of Low-Energy Electrons by Chorus and ECH Waves Based on In
Situ
Observations,J.
Geophys.
Space
Res.
Space
Phys.,
127,3.
https://doi.org/10.1029/2022JA030269, 2022
24

Fukizawa M., T. Sakanoi, Y. Tanaka, Y. Ogawa K. Hosokawa, B. Gustavsson, K. Kauristie, A.
Kozlovsky, T. Raita, U. Brändström, T. Sergienko, Reconstruction of precipitating electrons andthree-dimensional structure of a pulsating auroral patch from monochromatic auroral images
obtained from multiple observation points, Ann. Geophys., vol 40, 4, pp. 475 – 484. DOI:
10.5194/angeo-40-475-2022, 2022.
Heling, B., C. Stolle, G. Kervalishvili, J. Rauberg, Y. Miyoshi, F. Tsuchiya, A. Kumamoto, Y. Kasahara,
M. Shoji, S. Nakamura, M. Kitahara, and I. Shinohara, Relation of the plasmapause to the
midlatitude ionospheric trough, the sub-auroral temperature enhancement and the distribution ofsmall-scale field aligned currents as observed in the magnetosphere by THEMIS, RBSP, andArase, and in the topside ionosphere by Swarm, J. Geophys. Res. Space Phys., 127,e2021JA029646, doi:10.1029/2021JA029646, 2022.
Imajo, S., Y. Miyoshi, K. Asamura, I. Shinohara, M. Nosé, K. Shiokawa, Y. Kasahara, Y. Kasaba, A.
Matsuoka, S. Kasahara, S. Yokota, K. Keika, T. Hori, M. Shoji, S. Nakamura, M. Teramoto,Signatures of auroral potential structure extending through the near-equatorial innermagnetosphere.
Geophys.
Res.
Lett.
49,
e2022GL098105.
https://doi.org/10.1029/2022GL098105, 2022.
Ma, Q., W. Xu, E. R. Sanchez, R. A. Marshall, J. Bortnik, P. M. Reyes, R. H. Verney, S. R. Kaeppler,Y. Miyoshi, A. Matsuoka, Y. Kasahara, S. Matsuda, F. Tsuchiya, A. Kumamoto, S. Kasahara, S.
Yokota, K. Keika, T. Hori, T. Mitani, S. Nakamura, Y. Kazama, S.-Y. Wang, C.-W. Jun, I.
Shinohara, and S. W.-Y. Tam, Analysis of electron precipitation and ionospheric density
enhancements due to hiss using incoherent scatter radar and Arase observations, J. Geophys. Res.
Space Phys., 127, e2022JA030545, doi:10.1029/2022JA030545, 2022.
Miyoshi, Y., I. Shinohara, S. Ukhorskiy, S. G. Claudepierre, T. Mitani, T. Takashima,T. Hori, O.
Santolik, I. Kolmasova, S. Matsuda, Y. Kasahara, M.Teramoto, Y. Katoh,M. Hikishima, H.
Kojima, S. Kurita, S. Imajo, N. Higashio, S.Kasahara, S. Yokota, K. Asamura, Y. Kazama, S.-Y.
Wang, C.-W. Jun, Y. Kasaba, A. Kumamoto,F. Tsuchiya, M. Shoji, S. Nakamura, M. Kitahara, A.
Matsuoka, K. Shiokawa, K. Seki, M. Nosé,K. Takahashi, C. Martinez-Calderon, G. Hospodarsky,
C. Colpitts, Craig Kletzing, J. Wygant, H. Spence, D. N. Baker, G. D. Reeves, J. B. Blake, L.
Lanzerotti, Collaborative research activities of the Arase and Van Allen Probes. Space Science
Rev. 218, 38. https://doi.org/10.1007/s11214-022-00885-4, 2022.
Nakamura, S., Y. Miyoshi, K. Shiokawa, Y. Omura, T. Mitani, T. Takashima, N. Higashio, I. Shinohara,
T. Hori, S. Imajo, A. Matsuoka, F. Tsuchiya, A. Kumamoto, Y. Kasahara, M. Shoji, H. Spence,
and V. Angelopoulos, Simultaneous observations of EMIC-induced drifting electron holes(EDEHs) in the earth’s radiation belt by the Arase satellite, Van Allen Probes, and THEMIS,
Geophys. Res. Lett., 49, e2021GL095194, doi:10.1029/2021GL095194, 2022.
Nakayama, A., M. Ikoma, and N. Terada, Survival of Terrestrial N2-O2 Atmospheres in Violent XUVEnvironments through Efficient Atomic Line Radiative Cooling, The Astrophysical Journal, 937,
72(18pp). https://doi.org/10.3847/1538-4357/ac86ca, 2022.
Teramoto, M., Y. Miyoshi, A. Matsuoka, Y. Kasahara, A. Kumamoto, F. Tsuchiya, M. Nosé, S. Imajo,
M. Shoji, S. Nakamura, M. Kitahara, and I. Shinohara, Off-equatorial Pi2 pulsations inside andoutside the plasmapause observed by the Arase satellite, J. Geophys. Res. Space Phys., 127,e2021JA029677, doi:10.1029/2021JA029677, 2022.
松岡彩子, 三好由純, 加藤雄人編,坂野井健, 小特集 「あけぼの」衛星の四半世紀にわたる観測で明かされたジオスペースの姿と将来展望」, 「あけぼの」衛星の 26 年間のミッシ
ョンのサマリと関連分野への貢献」, プラズマ・核融合学会誌, 第 98 巻, 第 11 号, 2022.
Fukizawa,M., T. Sakanoi,Y. Miyoshi,Y. Kazama,Y. Katoh,Y. Kasahara,S. Matsuda,A. Kumamoto,F.
Tsuchiya,A. Matsuoka,S. Kurita,S. Nakamura,M. Shoji,M. Teramoto,S. Imajo,I. Shinohara,S.-Y.
Wang,S. W.-Y. Tam,T.-F. Chang,B.-J. Wang,C.-W. Jun (2022), Statistical Study of Approaching
Strong Diffusion of Low-Energy Electrons by Chorus and ECH Waves Based on In Situ
Observations,J.
Geophys.
Space
Res.
Space
Phys.,
127,
3,
2022.
https://doi.org/10.1029/2022JA03026
Fukizawa,M., T. Sakanoi,Y. Ogawa,T. T. Tsuda,K. Hosokawa(2021), Statistical Study of Electron
Density Enhancements in the Ionospheric F Region Associated With Pulsating Auroras, J.
Geophys. Space Res. Space Phys.,126, 12. https://doi.org/10.1029/2021JA029601
25

Asamura, K., M. Shoji, Y. Miyoshi, Y. Kasahara, Y. Kasaba, A. Kumamoto, F. Tsuchiya, S. Matsuda,
A. Matsuoka, M. Teramoto, Y. Kazama, I. Shinohara (2021). Cross-energy couplings frommagnetosonic waves to electromagnetic ion cyclotron waves through cold ion heating inside thePlasmasphere. Phys. Rev. Lett. 127, 245101. https://doi.org/10.1103/PhysRevLett.127.245101
Hosokawa, K., Y. Miyoshi, S.I. Oyama, Y. Ogawa, S. Kurita, Y. Kasahara, Y. Kasaba, S. Yagitani, S.
Matsuda, M. Ozaki, F. Tsuchiya, A. Kumamoto, T. Takashima, I. Shinohara, R. Fujii (2021).
Over-Darkening of Pulsating Aurora. J. Geophys. Res. Space Phys. 126, e2020JA028838.
https://doi.org/10.1029/2020JA028838
Imajo, S., Y. Miyoshi, Y. Kazama, K. Asamura, I. Shinohara, K. Shiokawa, Y. Kasahara, Y. Kasaba, A.
Matsuoka, S.-Y. Wang, S.W.Y. Tam, T.‑F. Chang, B.‑J. Wang, V. Angelopoulos, C.-W. Jun, M.
Shoji, S. Nakamura, M. Kitahara, M. Teramoto, S. Kurita, T. Hori (2021). Active auroral arc
powered by accelerated electrons from very high altitudes. Sci. Rep. 11, 1610.
https://doi.org/10.1038/s41598-020-79665-5
Inaba, Y., K. Shiokawa, S.I. Oyama, Y. Otsuka, M. Connors, I. Schofield, Y. Miyoshi, S. Imajo, A.
Shinbori, A.Y. Gololobov, Y. Kazama, S.Y. Wang, S.W.Y. Tam, T.F. Chang, B.J. Wang, K.
Asamura, S. Yokota, S. Kasahara, K. Keika, T. Hori, A. Matsuoka, Y. Kasahara, A. Kumamoto,
S. Matsuda, Y. Kasaba, F. Tsuchiya, M. Shoji, M. Kitahara, S. Nakamura, I. Shinohara, H.E.
Spence, G.D. Reeves, R.J. Macdowall, C.W. Smith, J.R. Wygant, J.W. Bonnell (2021). Multievent analysis of plasma and field variations in source of stable auroral red (SAR) arcs in innermagnetosphere during non-storm-time substorms. J. Geophys. Res. Space Phys. 126,e2020JA029081. https://doi.org/10.1029/2020JA029081
Jun, C.-W., Y. Miyoshi, S. Kurita, C. Yue, J. Bortnik, L. Lyons, S. Nakamura, M. Shoji, S. Imajo, C.
Kletzing, Y. Kasahara, Y. Kasaba, S. Matsuda, F. Tsuchiya, A. Kumamoto, A. Matsuoka, I.
Shinohara (2021). The characteristics of EMIC waves in the magnetosphere based on the Van
Allen Probes and Arase observations. J. Geophys. Res. Space Physics 126, e2020JA029001.
https://doi.org/10.1029/2020JA029001
Kawai, K., K. Shiokawa, Y. Otsuka, S. Oyama, Y. Kasaba, Y. Kasahara, F. Tsuchiya, A. Kumamoto, S.
Nakamura, A. Matsuoka, S. Imajo, Y. Kazama, S.-Y. Wang, S.W.Y. Tam, T.F. Chang, B.J. Wang,
K. Asamura, S. Kasahara, S. Yokota, K. Keika, T. Hori, Y. Miyoshi, C. Jun, M. Shoji, I. Shinohara(2021). First simultaneous observation of a night time medium-scale traveling ionosphericdisturbance from the ground and a magnetospheric satellite. J. Geophys. Res. Space Phys. 126,e2020JA029086. https://doi.org/10.1029/2020JA029086
Kawamura,M., T. Sakanoi, M. Fukizawa,Y. Miyoshi,K. Hosokawa, F. Tsuchiya, Y. Katoh, Y. Ogawa,
K. Asamura, S. Saito, H. Spence, A. Johnson, S-I. Oyama, U. Braendstroem (2021), Simultaneous
Pulsating Aurora and Microburst Observations With Ground-Based Fast Auroral Imagers and
CubeSat FIREBIRD-II, Geophys. Res. Lett., 48, 18.https://doi.org/10.1029/2021GL094494
Kazama, Y., H. Kojima, Y. Miyoshi, Y. Kasahara, S. Kasahara, H. Usui, B.-J. Wang, S.-Y. Wang, S.W.Y.
Tam, T.-F. Chang, K. Asamura, Y. Kasaba, S. Matsuda, M. Shoji, A. Matsuoka, M. Teramoto, T.
Takashima, I. Shinohara (2021). Extremely collimated electron beams in the high latitude
magnetosphere observed by Arase. Geophys. Res. Lett. 48, e2020GL090522.
https://doi.org/10.1029/2020GL090522
Kazama, Y., Y. Miyoshi, H. Kojima, Y. Kasahara, S. Kasahara, H. Usui, B.J. Wang, S.Y. Wang, S.W.Y.
Tam, T.F. Chang, K. Asamura, S. Matsuda, A. Kumamoto, F. Tsuchiya, Y. Kasaba, M. Shoji, A.
Matsuoka, M. Teramoto, T. Takashima, I. Shinohara (2021). Arase observation of simultaneouselectron scatterings by upper-band and lower-band chorus emissions. Geophys. Res. Lett. 48,
e2021GL093708. https://doi.org/10.1029/2021GL093708
Kitamura, N., M. Shoji, S. Nakamura, M. Kitahara, T. Amano, Y. Omura, H. Hasegawa, S. A. Boardsen,
Y. Miyoshi, Y. Katoh, M. Teramoto, Y. Saito, S. Yokota, M. Hirahara, D. J. Gershman, A. F. Viñas,
B. L. Giles, W. R. Paterson, C. J. Pollock, C. T. Russell, R. J. Strangeway, N. Ahmadi, P.-A.
Lindqvist, R. E. Ergun, S. A. Fuselier, and J. L. Burch, Energy transfer between hot protons andelectromagnetic ion cyclotron waves in compressional Pc5 ultra-low frequency waves, J.
Geophys. Res., 126, e2020JA028912, doi:10.1029/2020JA028912, 2021.
Matsuda, S., H. Kojima, Y. Kasahara, Y. Kasaba, A. Kumamoto, F. Tsuchiya, A. Matsuoka, Y. Miyoshi,
I. Shinohara (2021). Direct antenna impedance measurement for quantitative AC electric field
26

measurement by Arase. J. Geophys. Res. Space Phys. 126, e2021JA029111.
https://doi.org/10.1029/2021JA029111
Matsuda, S., Y. Miyoshi, Y. Kasahara, L. Blum, C. Colpitts, K. Asamura, Y. Kasaba, A. Matsuoka, F.
Tsuchiya, A. Kumamoto, M. Teramoto, S. Nakamura, M. Kitahara, I. Shinohara, G. Reeves, H.
Spence, K. Shiokawa, T. Nagatsuma, S. Oyama, I. R. Mann (2021). Multipoint measurement offine-structured EMIC waves by Arase, Van Allen Probe A, and ground stations. Geophys. Res.
Lett. 48, e2021GL096488. https://doi.org/10.1029/2021GL096488
Namekawa,T. Mitani,K. Asamura,Y. Miyoshi,K. Hosokawa,Y. Ogawa,S. Saito,T. Hori,S. Sugo,O.
Kawashima,S. Kasahara,R. Nomura,N. Yagi,M. Fukizawa,T. Sakanoi,Y. Saito,A. Matsuoka,I.
Shinohara,Y. Fedorenko,A. Nikitenko,C. Koehler (2021), Rocket Observation of Sub-Relativistic
Electrons in the Quiet Dayside Auroral Ionosphere, J. Geophys. Space Res. Space Phys.,126, 7.
https://doi.org/10.1029/2020JA028633
Nishiyama, T., Taguchi, M., Suzuki, H., .Braendstroem, U., Sakanoi, T. (2021), Temporal evolutionsof N2+ Meinel (1,2) band near 1.5.μm associated with aurora breakup and their effects on
mesopause temperature estimations from OH Meinel (3,1) band, Earth, Planets and Space, 73(1),30, doi:10.1186/s40623-021-01360-0.
Shoji, M., Y. Miyoshi, L.M. Kistler, K. Asamura, A. Matsuoka, Y. Kasaba, S. Matsuda, Y. Kasahara, I.
Shinohara (2021). Discovery of proton hill in the phase space during interactions between ionsand electromagnetic ion cyclotron waves. Sci. Rep. 11, 13480. https://doi.org/10.1038/s41598021-92541-0
Sugo, S., O. Kawashima,S. Kasahara,K. Asamura,R. Nomura,Y. Miyoshi,Y. Ogawa,K. Hosokawa,T.
Mitani,T. Namekawa,T. Sakanoi,M. Fukizawa,N. Yagi,Y. Fedorenko,A. Nikitenko,S. Yokota,K.
Keika,T. Hori,C(2021). KoehlerEnergy-Resolved Detection of Precipitating Electrons of 30-100
keV by a Sounding Rocket Associated With Dayside Chorus Waves, J. Geophys. Space Res.
Space Phys.,126, 3, 2021. https://doi.org/10.1029/2020JA028477
Takahashi, N., K. Seki, M.-C. Fok, Y. Zheng, Y. Miyoshi, S. Kasahara, K. Keika, D. Hartley, Y.
Kasahara, Y. Kasaba, N. Higashio, A. Matsuoka, S. Yokota, T. Hori, M. Shoji, S. Nakamura, S.
Imajo, I. Shinohara (2021). Relative contribution of ULF waves and whistler-mode chorus to theradiation belt variation during the May 2017 storm. J. Geophys. Res. Space Phys. 126,e2020JA028972. https://doi.org/10.1029/2020JA028972
Yadav, S., K. Shiokawa, S. Oyama, Y. Inaba, N. Takahashi, K. Seki, K. Keika, T.F. Chang, S.W.Y. Tam,
B.J. Wang, Y. Kazama, S.Y. Wang, K. Asamura, S. Kasahara, S. Yokota, T. Hori, Y. Kasaba, F.
Tsuchiya, A. Kumamoto, M. Shoji, Y. Kasahara, A. Matsuoka, S. Matsuda, C. W. Jun, S. Imajo,
Y. Miyoshi, I. Shinohara (2021). Study of an equatorward detachment of auroral arc from theoval using ground-space observations and the BATS-R-US–CIMI model. J. Geophys. Res. Space
Phys. 126, e2020JA029080. https://doi.org/10.1029/2020JA029080
Yahnin, A.G., T.A. Popova, A.G. Demekhov, A.A. Lubchich, A. Matsuoka, K. Asamura, Y. Miyoshi,
S. Yokota, S. Kasahara, K. Keika, T. Hori, F. Tsuchiya, A. Kumamoto, Y. Kasahara, M. Shoji, Y.
Kasaba, S. Nakamura, I. Shinohara, H. Kim, S. Noh, T. Raita (2021). Evening side EMIC waves
and related proton precipitation induced by a substorm. J. Geophysical Res. Space Physics 126,e2020JA029091. https://doi.org/10.1029/2020JA029091
Zhang, X.-J., A. G. Demekhov, Y. Katoh, D. Nunn, X. Tao, D. Mourenas, Y. Omura, A. V. Artemyev,
V. Angelopoulos, Fine structure of chorus wave packets: Comparison between observations andwave generation models, J. Geophys. Res.: Space Physics, 126, e2021JA029330,
doi:10.1029/2021JA029330, 2021.
<Planetary ionosphere and atmosphere>
Kamada, A., T. Kuroda. T. Kodama, Y. Kasaba, N. Terada, Evolution of ice sheets on early Mars with
subglacial river systems, Icarus 385, 115117. https://doi.org/10.1016/j.icarus.2022.115117, 2022.
Kamada, A., T. Kuroda, Y. Kasaba, T. Terada, H. Nakagawa, Corrigendum to “Global climate and rivertransport simulations of early Mars around the Noachian and Hesperian boundary” [Icarus,
Volume368(2021)
114618],
Icarus
379,
June
2022,
114915.
https://doi.org/10.1016/j.icarus.2022.114915, 2022.
Kurokawa, H., T. Kuroda, S. Aoki, and H. Nakagawa, Can we constrain the origin of Mars’ recurring
27

slopelineaeusing
atmosphericobservations?
Icarus,371,
114688.
https://doi.org/10.1016/j.icarus.2021.114688, 2022.
Masunaga, K., N. Terada, N. Yoshida, Y. Nakamura, T. Kuroda, K. Yoshioka, Y. Suzuki, H. Nakagawa,T. Kimura, F. Tsuchiya, G. Murakami, A. Yamazaki, T. Usui, and I. Yoshikawa, Alternate
oscillation oxygen upper atmospheres during a major dust storm, Nature communications, 13,6609. https://doi.org/10.1038/s41467-022-34224-6, 2022.
Nakamura, Y., N. Terada, F. Leblanc, A. Rahmati, H. Nakagawa, S. Sakai, S. Hiruba, R. Kataoka, andK. Murase, Modeling of diffuse auroral emission at Mars: Contribution of MeV protons, JournalofGeophysicalResearch:Space
Physics,
127,
e2021JA029914,
https://doi.org/10.1029/2021JA029914, 2022.
Nakamura, Y., K. Terada, C. Tao, N. Terada, Y. Kasaba, F. Leblanc, H. Kita, A. Nakamizo, A.
Yoshikawa, S. Ohtani, F. Tsuchiya, M. Kagitani, T. Sakanoi, G. Murakami, K. Yoshioka, T.
Kimura, A. Yamazaki, I. Yoshikawa, Effect of meteoric ions on ionospheric conductance at
Jupiter.
J.
Geophys.
Res.:
Space
Phys.
127,
e2022JA030312.
https://doi.org/10.1029/2022JA030312, 2022. (Editor’s Highlight)
Oura, A., Y. Kasaba, R, Noguchi, A, Kumamoto, K, Ishiyama, T, Usui, F. Tsuchiya, C. Uemura, T.
Kimura, Search for shallow subsurface structures in Chryse and Acidalia Planitiae on Mars. J.
Geophys. Res.: Space Phys. 127, e2022JA030312. https://doi.org/10.1016/j.icarus.2022.114915,
2022.
Roman, M.T., L.N. Fletcher, G.S. Orton, T.K. Greathouse, J.I. Moses, N. Rowe-Gurney, P.G.J. Irwin,
A. Antuñano, J. Sinclair, Y. Kasaba, Subseasonal Variation in Neptune’s mid-infrared emission.
Planetary Sci. J. 3, 4. https://doi.org/10.3847/PSJ/ac5aa4, 2022.
Sakata, R., K. Seki, S. Sakai, N. Terada, H. Shinagawa, and T. Tanaka, Multispecies MHD study ofion escape at ancient Mars: Effects of an intrinsic magnetic field and solar XUV radiation, JournalofGeophysicalResearch:Space
Physics,
127,
e2022JA030427.
https://doi.org/10.1029/2022JA030427, 2022.
Sakakura, K., K. Seki, S. Sakai, R. Sakata, H. Shinagawa, D. A. Brain, J. P. McFadden, J. S. Halekas,
G. A. DiBraccio, B. M. Jakosky, N. Terada, and T. Tanaka, Formation mechanisms of themolecular ion polar plume and its contribution to ion escape from Mars, Journal of GeophysicalResearch: Space Physics, 127, e2021JA029750. https://doi.org/10.1029/2021JA029750, 2022.
Yoshida, N., H. Nakagawa, S. Aoki, J. Erwin, A.C. Vandaele, F. Daerden, I. Thomas, L. Trompet, S.
Koyama, N. Terada, L. Neary, I. Murata, G. Villanueva, G. Liuzzi, M.A. Lopez-Valverde, A.
Brines, A. Modak, Y. Kasaba, B. Ristic, G. Bellucci, J.J. López-Moreno, M. Patel, Variations invertical CO/CO2 profiles in the Martian mesosphere and lower thermosphere measured by the
ExoMars TGO/NOMAD: Implications of variations in eddy diffusion coefficient. Geophys. Res.
Lett. 49, e2022GL098485. https://doi.org/10.1029/2022GL098485, 2022.
Yoshida, T., N. Terada, M. Ikoma, and K. Kuramoto, Less effective hydrodynamic escape of H2-H2O
atmospheres on terrestrial planets orbiting pre-main sequence M dwarfs, The AstrophysicalJournal, 934, 137(11pp). https://doi.org/10.3847/1538-4357/ac7be7, 2022.
Nakamura, Y., K. Terada, C. Tao, N. Terada, Y. Kasaba, F. Leblanc, H. Kita, A. Nakamizo, A.
Yoshikawa, S. Ohtani, F. Tsuchiya, M. Kagitani, T. Sakanoi, G. Murakami, K. Yoshioka, T.
Kimura, A. Yamazaki, I. Yoshikawa (2022). Effect of meteoric ions on ionospheric conductanceat
Jupiter.
J.
Geophys.
Res.:
Space
Phys.
127,
e2022JA030312.
https://doi.org/10.1029/2022JA030312
Benkhoff, J., G. Murakami, W. Baumjohann, S. Besse, E. Bunce, M. Casale, G. Cremosese, K.-H.
Glassmeier, H. Hayakawa, D. Heyner, H. Hiesinger, J. Huovelin, H. Hussmann, V. Iafolla, L. Iess,
Y. Kasaba, M. Kobayashi, A. Milillo, I. G. Mitrofanov, E. Montagnon, M. Novara, S. Orsini, E.
Quemerais, U. Reininghaus, Y. Saito, F. Santoli, D. Stramaccioni, O. Sutherland, N. Thomas, I.
Yoshikawa & J. Zender (2021). BepiColombo – Mission overview and science goals. Space Sci.
Rev. 217, 90. https://doi.org/10.1007/s11214-021-00861-4
Fischer, G., M. Panchenko, W. Macher, Y. Kasaba, H. Misawa, M. Tokarz, L. Wisniewski, B. Cecconi,
J. Bergman, J. E. Wahlund (2021). Calibration of the JUICE RWI antennas by numericalsimulation. Radio Science 56, e2021RS007309. https://doi.org/10.1029/2021RS007309
Kamada, A., T. Kuroda, Y. Kasaba, T. Terada, H. Nakagawa (2021). Global climate and river transport28

simulations of early Mars around the Noachian and Hesperian boundary. Icarus 368, 114618.
https://doi.org/10.1016/j.icarus.2021.114618
Koyama, S., N. Terada, H. Nakagawa, T. Kuroda, and Y. Sekine (2021), Stability of Atmospheric
Redox States of Early Mars Inferred from Time Response of the Regulation of H and O Losses.
The Astrophysica Journal, 912, 135. https://doi.org/10.3847/1538-4357/abf0ac
Kurokawa, H., Y. N. Miura, S. Sugita, Y. Cho, F. Leblanc, N. Terada, and H. Nakagawa (2021), Mars’
atmospheric neon suggests volatile-rich primitive mantle, Icarus, 370, 114685,
https://doi.org/10.1016/j.icarus.2021.114685.
Mahieux, A., R.V. Yelle, N. Yoshida, S. Robert, A. Piccialli, H. Nakagawa, Y. Kasaba, F.P. Mills, A.C.
Vandaele (2021). Determination of the Venus eddy diffusion profile from CO and CO2 profiles
using
SOIR/Venus
Express
observations.
Icarus361,
114388.
https://doi.org/10.1016/j.icarus.2021.114388
Mangano, V., M. Dósa, M. Fränz, A. Milillo, J.S. Oliveira, Y.J. Lee, S. McKenna-Lawlor, D. Grassi,
D. Heyner, A.S. Kozyrev, R. Peron, J. Helbert, S. Besse, S. de la Fuente, E. Montagnon, J. Zender,
M. Volwerk, J.-Y. Chaufray, J.A. Slavin, H. Krüger, A. Maturilli, T. Cornet, K. Iwai, Y. Miyoshi,
M. Lucente, S. Massetti, C.A. Schmidt, C. Dong, F. Quarati, T. Hirai, A. Varsani, D. Belyaev, J.
Zhong, E.K.J. Kilpua, B.V. Jackson, D. Odstrcil, F. Plaschke, R. Vainio, R. Jarvinen, S.L.
Ivanovski, Á. Madár, G. Erdős, C. Plainaki, T. Alberti, S. Aizawa, J. Benkhoff, G. Murakami, E.
Quemerais, H. Hiesinger, I.G. Mitrofanov, L. Iess, F. Santoli, S. Orsini, H. Lichtenegger, G. Laky,
S. Barabash, R. Moissl, J. Huovelin, Y. Kasaba, Y. Saito, M. Kobayashi, W. Baumjohann (2021).
BepiColombo Science Investigations During Cruise and Flybys at the Earth, Venus and Mercury.
Space Sci. Rev. 217, 23. https://doi.org/10.1007/s11214-021-00797-9
Mahieux, A., R. V. Yelle, N. Yoshida, S. Robert, A. Piccialli, H. Nakagawa, Y. Kasaba, F. P. Mills, A.
C. Vandaele (2021) Determination of the Venus eddy diffusion profile from CO and CO2 profiles
using
SOIR/Venus
Express
observations,
Icarus,361,
114388,https://doi.org/10.1016/j.icarus.2021.114388.
Miyamoto, A., H. Nakagawa, I. Kuroda, K. Takami, I. Murata, A.S. Medvedev, N. Yoshida, S. Aoki,
H. Sagawa, Y. Kasaba, N. Terada (2021). Intense zonal wind in the Martian mesosphere during
the 2018 planet-encircling dust event observed by ground-based infrared heterodyne
spectroscopy. Geophys. Res. Lett. 48, e2021GL092413. https://doi.org/10.1029/2021GL092413
Nakamura, T., H. Ikeda, T. Kouyama, H. Nakagawa, H. Kusano, H. Senshu, S. Kameda, K. Matsumoto,
F. Gonzalez-Franquesa, N. Ozaki, Y. Takeo, N. Baresi, Y. Oki, D. J. Lawrence, N. L. Chabot, P.
N. Peplowski, M. A. Barucci, E. Sawyer, S. Yokota, N. Terada, S. Ulamec, P. Michel, M.
Kobayashi, S. Sasaki, N. Hirata, K. Wada, H. Miyamoto, T. Imamura, N. Ogawa, K. Ogawa, T.
Iwata, T. Imada, H. Otake, E. Canalias, L. Lorda, S. Tardivel, S. Mary, M. Kunugi, S. Mitsuhashi,
A. Doressoundiram, F. Merlin, S. Fornasier, J.-M. Reess, P. Bernardi, S. Imai, Y. Ito, H. Ishida,
K. Kuramoto, and Y. Kawakatsu (2021), Science operation plan of Phobos and Deimos from the
MMX spacecraft, Earth, Planets and Space, 73, 227, https://doi.org/10.1186/s40623-021-015466.
Saito, Y., D. Delcourt, M. Hirahara, S. Barabash, N. Andre, T. Takashima, K. Asamura, S. Yokota, M.
Wieser, M. N. Nishino, M. Oka, Y. Futaana, Y. Harada, J.-A. Sauvaud, P. Louarn, B. Lavraud, V.
Genot, C. Mazelle, I. Dandouras, C. Jacquey, C. Aoustin, A. Barthe, A. Cadu, A. Fedorov, A.-M.
Frezoul, C. Garat, E. Le Comte, Q.-M. Lee, J.-L. Medale, D. Moirin, E. Penou, M. Petiot, G.
Peyre, J. Rouzaud, H.-C. Seran, Z. Nemecek, J. Safrankova, M. F. Marcucci, R. Bruno, G.
Consolini, W. Miyake, I. Shinohara, H. Hasegawa, K. Seki, A. J. Coates, F. Leblanc, C. Verdeil,B. Katra, D. Fontaine, J.-M. Illiano, J.-J. Berthelier, J.-D. Techer, M. Fraenz, H. Fischer, N. Krupp,
J. Woch, U. Buhrke, B. Fiethe, H. Michalik, H. M. T. Yanagimachi, Y. Miyoshi, T. Mitani, M.
Shimoyama, Q. Zong, P. Wurz, H. Andersson, S. Karlsson, M. Holmstrom, Y. Kazama, W.-H. Ip,
M. Hoshino, M. Fujimoto, N. Terada, K. Keika, and the BepiColombo Mio/MPPE Team (2021),
Pre-flight Calibration and Near-Earth Commissioning Results of the Mercury Plasma Particle
Experiment (MPPE) onboard MMO (Mio), Space Science Review, 217, 70,
https://doi.org/10.1007/s11214-021-00839-2.
Sakai, S., K. Seki, N. Terada, H. Shinagawa, R. Sakata, T. Tanaka, Y. Ebihara (2021). Effects of the29

IMF direction on atmospheric escape from a Mars‐like planet under weak intrinsic magnetic field
conditions.
J.
Geophys.
Res.
Space
Physics
126,
e2020JA028485.
https://doi.org/10.1029/2020JA028485
Sugimoto, N., Y. Fujisawa, H. Kashimura, K. Noguchi, T. Kuroda, M. Takagi, and Y.-Y. Hayashi(2021), Generation of gravity waves from thermal tides in the Venus atmosphere. Nature
Communications, 12, 3682. https://doi.org/10.1038/s41467-021-24002-1
Tao, C., T. Kimura, E.A. Kronberg, F. Tsuchiya, G. Murakami, A. Yamazaki, M.F. Vogt, B. Bonfond,K. Yoshioka, I. Yoshikawa, Y. Kasaba, H. Kita, S. Okamoto (2021). Variation of Jupiter’s aurora
observed by Hisaki/EXCEED: 4. Quasi-periodic variation. J. Geophys. Res. Space Physics 126,e2020JA028575. https://doi.org/10.1029/2020JA028575
Yokota, S., N. Terada, A. Matsuoka, N. Murata, Y. Saito, D. Delcourt, Y. Futaana, K. Seki, M. J.
Schaible, K. Asamura, S. Kasahara, H. Nakagawa, M. N. Nishino, R. Nomura, K. Keika, Y.
Harada, and S. Imajo (2021), In situ observations of ions and magnetic field around Phobos: The
Mass Spectrum Analyzer (MSA) for the Martian Moons eXploration (MMX) mission, Earth,Planets and Space, 73, 216, https://doi.org/10.1186/s40623-021-01452-x.
Yoshida, N., N. Terada, H. Nakagawa, D. A. Brain, S. Sakai, Y. Nakamura, M. Benna, and K.
Masunaga (2021), Seasonal and dust-related variations in the dayside thermospheric andionospheric compositions of Mars observed by MAVEN/NGIMS. J. Geophys. Res. Planets, 126,e2021JE006926. https://doi.org/10.1029/2021JE006926
Yoshioka, K., Miyoshi, Y., Kurita, S., Teramoto, M., Tsuchiya, F., Yamazaki, G. Murakami, T. Kimura,
H. Kita, I. Yoshikawa, Y. Kasaba (2021). Long-term monitoring of energetic protons at the bottomofEarth’sradiation
belt.
Space
Weather,
19,
e2020SW002611.
https://doi.org/10.1029/2020SW002611<Future missions>
Cohen, I.J., C. Beddingfield, R. Chancia, G. DiBraccio, M. Hedman, S. MacKenzie, B. Mauk, K.M.
Sayanagi, K.M. Soderlund, E. Turtle, C. Ahrens, C.S. Arridge, S.M. Brooks, E. Bunce, S.
Charnoz, A. Coustenis, R.A. Dillman, S. Dutta, L.N. Fletcher, R. Harbison, R. Helled, R. Holme,
L. Jozwiak, Y. Kasaba, P. Kollmann, S. Luszcz-Cook, K. Mandt, O. Mousis, A. Mura, G.
Murakami, M. Parisi, A. Rymer, S. Stanley, K. Stephan, R.J. Vervack, Jr., M.H. Wong, P. Wurz,
The Case for a New Frontiers-Class Uranus Orbiter: System science at an underexplored anduniqueworld
witha
mid-scalemission.
Planetary
Sci.
J.
3,
58.
https://doi.org/10.3847/PSJ/ac5113, 2022.
Kuramoto, K., Y. Kawakatsu, M. Fujimoto, A. Araya, M. A. Barucci, H. Genda, N. Hirata, H. Ikeda,
T. Imamura, H. Jorn, S. Kameda, M. Kobayashi, H. Kusano, D. J. Lawrence, K. Matsumoto, P.
Michel, H. Miyamoto, T. Morota, H. Nakagawa, T. Nakamura, K. Ogawa, H. Otake, M. Ozaki,
S. Russel, S. Sasaki, H. Sawada, H. Senshu, S. Tachibana, N. Terada, S. Ulamec, T. Usui, K.
Wada, S. Watababe, and S. Yokota, Martian Moons Exploration MMX: Sample Return Mission
to Phobos Elucidating Formation Processes of Habitable Planets, Earth, Planets and Space, 74,
12, https://doi.org/10.1186/s40623-021-01545-7, 2022.
Ogohara, K., H. Nakagawa, S. Aoki, T. Kouyama, T. Usui, N. Terada, T. Imamura, F. Montmessin, D.
Brain, A. Doressoundiram, T. Gautier, T. Hara, Y. Harada, H. Ikeda, M. Koike, F. Leblanc, R.
Ramirez, E. Sawyer, K. Seki, A. Spiga, A. C. Vandaele, S. Yokota, A. Barucci, and S. Kameda,
The Mars system revealed by the Martian Moons eXploration mission, Earth, Planets and Space,74, 1, https://doi.org/10.1186/s40623-021-01417-0, 2022.

30