Works by Ejiri K

Results: 41

Relationship between Na layer and CNA variations observed at Syowa, Antarctic.
Published in:
Earth, Planets & Space, 2021, v. 73, n. 1, p. 1, doi. 10.1186/s40623-020-01335-7
By:
- Tsuda, T. T.;
- Tanaka, Y. -M.;
- Tozu, R.;
- Takizawa, K.;
- Ejiri, M. K.;
- Nishiyama, T.;
- Kawahara, T. D.;
- Nakamura, T.
Publication type:
Article
First simulations of day-to-day variability of mid-latitude sporadic E layer structures.
Published in:
2020
By:
- Andoh, Satoshi;
- Saito, Akinori;
- Shinagawa, Hiroyuki;
- Ejiri, Mitsumu K.
Publication type:
Letter
Transient ionization of the mesosphere during auroral breakup: Arase satellite and ground-based conjugate observations at Syowa Station.
Published in:
Earth, Planets & Space, 2019, v. 71, n. 1, p. 1, doi. 10.1186/s40623-019-0989-7
By:
- Kataoka, Ryuho;
- Nishiyama, Takanori;
- Tanaka, Yoshimasa;
- Kadokura, Akira;
- Uchida, Herbert Akihito;
- Ebihara, Yusuke;
- Ejiri, Mitsumu K.;
- Tomikawa, Yoshihiro;
- Tsutsumi, Masaki;
- Sato, Kaoru;
- Miyoshi, Yoshizumi;
- Shiokawa, Kazuo;
- Kurita, Satoshi;
- Kasahara, Yoshiya;
- Ozaki, Mitsunori;
- Hosokawa, Keisuke;
- Matsuda, Shoya;
- Shinohara, Iku;
- Takashima, Takeshi;
- Sato, Tatsuhiko
Publication type:
Article
Vertical fine structure and time evolution of plasma irregularities in the Es layer observed by a high-resolution Ca+ lidar.
Published in:
Earth, Planets & Space, 2019, v. 71, n. 1, p. 1, doi. 10.1186/s40623-019-0984-z
By:
- Ejiri, Mitsumu K.;
- Nakamura, Takuji;
- Tsuda, Takuo T.;
- Nishiyama, Takanori;
- Abo, Makoto;
- Takahashi, Toru;
- Tsuno, Katsuhiko;
- Kawahara, Takuya D.;
- Ogawa, Takayo;
- Wada, Satoshi
Publication type:
Article
Characteristics of Gravity Wave Horizontal Phase Velocity Spectra in the Mesosphere Over the Antarctic Stations, Syowa and Davis.
Published in:
Journal of Geophysical Research. Atmospheres, 2023, v. 128, n. 6, p. 1, doi. 10.1029/2022JD037751
By:
- Kogure, Masaru;
- Nakamura, Takuji;
- Murphy, Damian J.;
- Taylor, Michael J.;
- Zhao, Yucheng;
- Pautet, Pierre‐Dominique;
- Tsutsumi, Masaki;
- Tomikawa, Yoshihiro;
- Ejiri, Mitsumu K.;
- Nishiyama, Takanori
Publication type:
Article
Mesospheric Short‐Period Gravity Waves in the Antarctic Peninsula Observed in All‐Sky Airglow Images and Their Possible Source Locations.
Published in:
Journal of Geophysical Research. Atmospheres, 2021, v. 126, n. 24, p. 1, doi. 10.1029/2021JD035842
By:
- Kam, Hosik;
- Song, In‐Sun;
- Kim, Jeong‐Han;
- Kim, Yong Ha;
- Song, Byeong‐Gwon;
- Nakamura, Takuji;
- Tomikawa, Yoshihiro;
- Kogure, Masaru;
- Ejiri, Mitsumu K.;
- Perwitasari, Septi;
- Tsutsumi, Masaki;
- Kwak, Young‐Sil
Publication type:
Article
Characteristics of mesospheric gravity waves over Antarctica observed by Antarctic Gravity Wave Instrument Network imagers using 3-D spectral analyses.
Published in:
Journal of Geophysical Research. Atmospheres, 2017, v. 122, n. 17, p. 8969, doi. 10.1002/2016JD026217
By:
- Matsuda, Takashi S.;
- Nakamura, Takuji;
- Ejiri, Mitsumu K.;
- Tsutsumi, Masaki;
- Tomikawa, Yoshihiro;
- Taylor, Michael J.;
- Zhao, Yucheng;
- Pautet, P.-Dominique;
- Murphy, Damian J.;
- Moffat-Griffin, Tracy
Publication type:
Article
Rayleigh/Raman lidar observations of gravity wave activity from 15 to 70 km altitude over Syowa (69°S, 40°E), the Antarctic.
Published in:
Journal of Geophysical Research. Atmospheres, 2017, v. 122, n. 15, p. 7869, doi. 10.1002/2016JD026360
By:
- Kogure, Masaru;
- Nakamura, Takuji;
- Ejiri, Mitsumu K.;
- Nishiyama, Takanori;
- Tomikawa, Yoshihiro;
- Tsutsumi, Masaki;
- Suzuki, Hidehiko;
- Tsuda, Takuo T.;
- Kawahara, Takuya D.;
- Abo, Makoto
Publication type:
Article
New statistical analysis of the horizontal phase velocity distribution of gravity waves observed by airglow imaging.
Published in:
Journal of Geophysical Research. Atmospheres, 2014, v. 119, n. 16, p. 9707, doi. 10.1002/2014JD021543
By:
- Matsuda, Takashi S.;
- Nakamura, Takuji;
- Ejiri, Mitsumu K.;
- Tsutsumi, Masaki;
- Shiokawa, Kazuo
Publication type:
Article
Histological and SEM analysis of root cementum following irradiation with Er:YAG and CO2 lasers.
Published in:
2013
By:
- Almehdi A;
- Aoki A;
- Ichinose S;
- Taniguchi Y;
- Sasaki KM;
- Ejiri K;
- Sawabe M;
- Chui C;
- Katagiri S;
- Izumi Y;
- Almehdi, Aslam;
- Aoki, Akira;
- Ichinose, Shizuko;
- Taniguchi, Yoichi;
- Sasaki, Katia M;
- Ejiri, Kenichiro;
- Sawabe, Masanori;
- Chui, Chanthoeun;
- Katagiri, Sayaka;
- Izumi, Yuichi
Publication type:
journal article
Propagation characteristics of sporadic E and medium-scale traveling ionospheric disturbances (MSTIDs): statistics using HF Doppler and GPS-TEC data in Japan.
Published in:
Earth, Planets & Space, 2022, v. 74, n. 1, p. 1, doi. 10.1186/s40623-022-01616-3
By:
- Matsushima, Ryo;
- Hosokawa, Keisuke;
- Sakai, Jun;
- Otsuka, Yuichi;
- Ejiri, Mitsumu K.;
- Nishioka, Michi;
- Tsugawa, Takuya
Publication type:
Article
Simultaneous airglow, lidar, and radar measurements of mesospheric gravity waves over Japan.
Published in:
Journal of Geophysical Research. Atmospheres, 2010, v. 115, n. D24, p. n/a, doi. 10.1029/2010JD014674
By:
- Suzuki, S.;
- Nakamura, T.;
- Ejiri, M. K.;
- Tsutsumi, M.;
- Shiokawa, K.;
- Kawahara, T. D.
Publication type:
Article
Seasonal variation of nocturnal temperature and sodium density in the mesopause region observed by a resonance scatter lidar over Uji, Japan.
Published in:
Journal of Geophysical Research. Atmospheres, 2010, v. 115, n. D18, p. n/a, doi. 10.1029/2009JD013799
By:
- Ejiri, Mitsumu K.;
- Nakamura, Takuji;
- Kawahara, Takuya D.
Publication type:
Article
Critical level interaction of a gravity wave with background winds driven by a large-scale wave perturbation.
Published in:
Journal of Geophysical Research. Atmospheres, 2009, v. 114, n. D18, p. n/a, doi. 10.1029/2008JD011381
By:
- Ejiri, Mitsumu K.;
- Taylor, Michael J.;
- Nakamura, Takuji;
- Franke, Steven J.
Publication type:
Article
Validation of the Improved Limb Atmospheric Spectrometer-II (ILAS-II) Version 1.4 nitrous oxide and methane profiles.
Published in:
Journal of Geophysical Research. Atmospheres, 2006, v. 111, n. D22, p. n/a, doi. 10.1029/2005JD006449
By:
- Ejiri, M. K.;
- Terao, Y.;
- Sugita, T.;
- Nakajima, H.;
- Yokota, T.;
- Toon, G. C.;
- Sen, B.;
- Wetzel, G.;
- Oelhaf, H.;
- Urban, J.;
- Murtagh, D.;
- Irie, H.;
- Saitoh, N.;
- Tanaka, T.;
- Kanzawa, H.;
- Shiotani, M.;
- Aoki, S.;
- Hashida, G.;
- Machida, T.;
- Nakazawa, T.
Publication type:
Article
Validation of stratospheric nitric acid profiles observed by Improved Limb Atmospheric Spectrometer (ILAS)-II.
Published in:
Journal of Geophysical Research. Atmospheres, 2006, v. 111, n. D11, p. n/a, doi. 10.1029/2005JD006115
By:
- Irie, H.;
- Sugita, T.;
- Nakajima, H.;
- Yokota, T.;
- Oelhaf, H.;
- Wetzel, G.;
- Toon, G. C.;
- Sen, B.;
- Santee, M. L.;
- Terao, Y.;
- Saitoh, N.;
- Ejiri, M. K.;
- Tanaka, T.;
- Kondo, Y.;
- Kanzawa, H.;
- Kobayashi, H.;
- Sasano, Y.
Publication type:
Article
Intercomparison of ILAS-II version 1.4 aerosol extinction coefficient at 780 nm with SAGE II, SAGE III, and POAM III.
Published in:
Journal of Geophysical Research. Atmospheres, 2006, v. 111, n. D11, p. n/a, doi. 10.1029/2005JD006315
By:
- Saitoh, N.;
- Hayashida, S.;
- Sugita, T.;
- Nakajima, H.;
- Yokota, T.;
- Hayashi, M.;
- Shiraishi, K.;
- Kanzawa, H.;
- Ejiri, M. K.;
- Irie, H.;
- Tanaka, T.;
- Terao, Y.;
- Bevilacqua, R. M.;
- Randall, C. E.;
- Thomason, L. W.;
- Taha, G.;
- Kobayashi, H.;
- Sasano, Y.
Publication type:
Article
Statistical study of short-period gravity waves in OH and OI nightglow images at two separated sites.
Published in:
Journal of Geophysical Research. Atmospheres, 2003, v. 108, n. D21, p. n/a, doi. 10.1029/2002JD002795
By:
- Ejiri, M. K.;
- Shiokawa, K.;
- Ogawa, T.;
- Igarashi, K.;
- Nakamura, T.;
- Tsuda, T.
Publication type:
Article
A localized structure in OH airglow images near the mesopause region.
Published in:
Journal of Geophysical Research. Atmospheres, 2003, v. 108, n. D2, p. n/a, doi. 10.1029/2002JD002462
By:
- Shiokawa, K.;
- Ejiri, M. K.;
- Ogawa, T.;
- Yamada, Y.;
- Fukunishi, H.;
- Igarashi, K.;
- Nakamura, T.
Publication type:
Article
Small-scale gravity waves near the mesopause observed by four all-sky airglow imagers.
Published in:
Journal of Geophysical Research. Atmospheres, 2001, v. 106, n. D19, p. 22793, doi. 10.1029/2001JD900225
By:
- Ejiri, M. K.;
- Shiokawa, K.;
- Ogawa, T.;
- Nakamura, T.;
- Maekawa, R.;
- Tsuda, T.;
- Kubota, M.
Publication type:
Article
Comparison of gravity wave propagation directions observed by mesospheric airglow imaging at three different latitudes using the M-transform.
Published in:
Annales Geophysicae (ANGEO) (09927689), 2018, v. 36, n. 6, p. 1597, doi. 10.5194/angeo-36-1597-2018
By:
- Perwitasari, Septi;
- Nakamura, Takuji;
- Kogure, Masaru;
- Tomikawa, Yoshihiro;
- Ejiri, Mitsumu K.;
- Shiokawa, Kazuo
Publication type:
Article
Simultaneous PMC and PMSE observations with a ground-based lidar and SuperDARN HF radar at Syowa Station, Antarctica.
Published in:
Annales Geophysicae (ANGEO) (09927689), 2013, v. 31, n. 10, p. 1793, doi. 10.5194/angeo-31-1793-2013
By:
- H. Suzuki;
- T. Nakamura;
- M. K. Ejiri;
- T. Ogawa;
- M. Tsutsumi;
- M. Abo;
- T. D. Kawahara;
- Y. Tomikawa;
- A. S. Yukimatu;
- N. Sato
Publication type:
Article
Study Of Rust Preventive Characteristics Of Rust Preventive Oil From Polarization Curve Measurement.
Published in:
Archives of Metallurgy & Materials, 2015, v. 60, n. 2, p. 915, doi. 10.1515/amm-2015-0229
By:
- Iwashima, D.;
- Ejiri, K.;
- Nagase, N.;
- Hatakeyama, M.;
- Sunada, S.
Publication type:
Article
Distant lunar sodium tail observed in the Japanese local-time sector during the Leonid meteor shower of 1998.
Published in:
Journal of Geophysical Research. Planets, 2000, v. 105, n. E10, p. 24621, doi. 10.1029/2000JE001243
By:
- Shiokawa, K.;
- Ejiri, M. K.;
- Ogawa, T.;
- Nakamura, T.
Publication type:
Article
Calculation of personal dose equivalent for positron-emitting radionuclides using Monte Carlo code EGS5.
Published in:
Radiation Protection Dosimetry, 2011, v. 146, n. 1-3, p. 202, doi. 10.1093/rpd/ncr148
By:
- Kato, T.;
- Aoki, K.;
- Yokoyama, S.;
- Ejiri, K.;
- Minami, K.;
- Yashima, H.;
- Taniguchi, A.;
- Nakamura, T.;
- Hirayama, H.
Publication type:
Article
Decrease in sodium density observed during auroral particle precipitation over Tromsø, Norway.
Published in:
Geophysical Research Letters, 2013, v. 40, n. 17, p. 4486, doi. 10.1002/grl.50897
By:
- Tsuda, T. T.;
- Nozawa, S.;
- Kawahara, T. D.;
- Kawabata, T.;
- Saito, N.;
- Wada, S.;
- Ogawa, Y.;
- Oyama, S.;
- Hall, C. M.;
- Tsutsumi, M.;
- Ejiri, M. K.;
- Suzuki, S.;
- Takahashi, T.;
- Nakamura, T.
Publication type:
Article
Traveling ionospheric disturbances observed in the OI 630-nm nightglow images over Japan by using a Multipoint Imager Network during the FRONT Campaign.
Published in:
Geophysical Research Letters, 2000, v. 27, n. 24, p. 4037, doi. 10.1029/2000GL011858
By:
- Kubota, M.;
- Shiokawa, K.;
- Ejiri, M. K.;
- Otsuka, Y.;
- Ogawa, T.;
- Sakanoi, T.;
- Fukunishi, H.;
- Yamamoto, M.;
- Fukao, S.;
- Saito, A.
Publication type:
Article
Multi-point observation of short-period mesospheric gravity waves over Japan during the FRONT Campaign.
Published in:
Geophysical Research Letters, 2000, v. 27, n. 24, p. 4057, doi. 10.1029/2000GL011917
By:
- Shiokawa, K.;
- Ejiri, M. K.;
- Otsuka, Y.;
- Ogawa, T.;
- Kubota, M.;
- Igarashi, K.;
- Saito, A.;
- Nakamura, T.
Publication type:
Article
Propagation Direction Analyses of Medium-Scale Traveling Ionospheric Disturbances Observed Over North America With GPS-TEC Perturbation Maps by Three-Dimensional Spectral Analysis Method.
Published in:
Journal of Geophysical Research. Space Physics, 2022, v. 127, n. 1, p. 1, doi. 10.1029/2020JA028791
By:
- Perwitasari, Septi;
- Takuji Nakamura;
- Takuya Tsugawa;
- Michi Nishioka;
- Yoshihiro Tomikawa;
- Ejiri, Mitsumu K.;
- Masaru Kogure;
- Yuichi Otsuka;
- Atsuki Shinbori;
- Hidekatsu Jin;
- Chihiro Tao
Publication type:
Article
Observation of Synchronization Between Instabilities of the Sporadic E Layer and Geomagnetic Field Line Connected F Region Medium‐Scale Traveling Ionospheric Disturbances.
Published in:
Journal of Geophysical Research. Space Physics, 2019, v. 124, n. 6, p. 4627, doi. 10.1029/2018JA026242
By:
- Ejiri, Mitsumu K.;
- Nakamura, Takuji;
- Nishiyama, Takanori;
- Takahashi, Toru;
- Kawahara, Takuya D.;
- Tsuda, Takuo T.;
- Abo, Makoto;
- She, Chiao‐Yao;
- Nishioka, Michi;
- Saito, Akinori;
- Tsuno, Katsuhiko;
- Ogawa, Takayo;
- Wada, Satoshi
Publication type:
Article
Sixteen year variation of horizontal phase velocity and propagation direction of mesospheric and thermospheric waves in airglow images at Shigaraki, Japan.
Published in:
Journal of Geophysical Research. Space Physics, 2017, v. 122, n. 8, p. 8770, doi. 10.1002/2017JA023919
By:
- Takeo, D.;
- Shiokawa, K.;
- Fujinami, H.;
- Otsuka, Y.;
- Matsuda, T. S.;
- Ejiri, M. K.;
- Nakamura, T.;
- Yamamoto, M.
Publication type:
Article
Ground-based observations of nitric oxide in the mesosphere and lower thermosphere over Antarctica in 2012-2013.
Published in:
Journal of Geophysical Research. Space Physics, 2014, v. 119, n. 9, p. 7745, doi. 10.1002/2014JA019881
By:
- Isono, Yasuko;
- Mizuno, Akira;
- Nagahama, Tomoo;
- Miyoshi, Yoshizumi;
- Nakamura, Takuji;
- Kataoka, Ryuho;
- Tsutsumi, Masaki;
- Ejiri, Mitsumu K.;
- Fujiwara, Hitoshi;
- Maezawa, Hiroyuki;
- Uemura, Miku
Publication type:
Article
Large‐Amplitude Inertia Gravity Waves Over Syowa Station: Comparison of PANSY Radar and ERA5 Reanalysis Data.
Published in:
Journal of Geophysical Research. Atmospheres, 2024, v. 129, n. 22, p. 1, doi. 10.1029/2023JD040490
By:
- Yoshida, L.;
- Tomikawa, Y.;
- Ejiri, M. K.;
- Tsutsumi, M.;
- Kohma, M.;
- Sato, K.
Publication type:
Article
Effects of Horizontal Wind Structure on a Gravity Wave Event in the Middle Atmosphere Over Syowa (69°S, 40°E), the Antarctic.
Published in:
Geophysical Research Letters, 2018, v. 45, n. 10, p. 5151, doi. 10.1029/2018GL078264
By:
- Kogure, Masaru;
- Nakamura, Takuji;
- Ejiri, Mitsumu K.;
- Nishiyama, Takanori;
- Tomikawa, Yoshihiro;
- Tsutsumi, Masaki
Publication type:
Article
Statistical investigation of Na layer response to geomagnetic activity using resonance scattering measurements by Odin/OSIRIS.
Published in:
Geophysical Research Letters, 2017, v. 44, n. 12, p. 5943, doi. 10.1002/2017GL072801
By:
- Tsuda, T. T.;
- Nakamura, T.;
- Ejiri, M. K.;
- Nishiyama, T.;
- Hosokawa, K.;
- Takahashi, T.;
- Gumbel, J.;
- Hedin, J.
Publication type:
Article
Three years of concentric gravity wave variability in the mesopause as observed by IMAP/VISI.
Published in:
Geophysical Research Letters, 2016, v. 43, n. 22, p. 11,528, doi. 10.1002/2016GL071511
By:
- Perwitasari, S.;
- Sakanoi, T.;
- Nakamura, T.;
- Ejiri, M. K.;
- Tsutsumi, M.;
- Tomikawa, Y.;
- Otsuka, Y.;
- Yamazaki, A.;
- Saito, A.
Publication type:
Article
A sporadic sodium layer event detected with five-directional lidar and simultaneous wind, electron density, and electric field observation at Tromsø, Norway.
Published in:
Geophysical Research Letters, 2015, v. 42, n. 21, p. 9190, doi. 10.1002/2015GL066411
By:
- Tsuda, T. T.;
- Nozawa, S.;
- Kawahara, T. D.;
- Kawabata, T.;
- Saito, N.;
- Wada, S.;
- Hall, C. M.;
- Tsutsumi, M.;
- Ogawa, Y.;
- Oyama, S.;
- Takahashi, T.;
- Ejiri, M. K.;
- Nishiyama, T.;
- Nakamura, T.;
- Brekke, A.
Publication type:
Article
A thermospheric Na layer event observed up to 140 km over Syowa Station (69.0°S, 39.6°E) in Antarctica.
Published in:
Geophysical Research Letters, 2015, v. 42, n. 10, p. 3647, doi. 10.1002/2015GL064101
By:
- Tsuda, T. T.;
- Chu, X.;
- Nakamura, T.;
- Ejiri, M. K.;
- Kawahara, T. D.;
- Yukimatu, A. S.;
- Hosokawa, K.
Publication type:
Article
Height and time characteristics of seasonal and diurnal variations in PMWE based on 1 year observations by the PANSY radar (69.0°S, 39.6°E).
Published in:
Geophysical Research Letters, 2015, v. 42, n. 7, p. 2100, doi. 10.1002/2015GL063349
By:
- Nishiyama, Takanori;
- Sato, Kaoru;
- Nakamura, Takuji;
- Tsutsumi, Masaki;
- Sato, Toru;
- Kohma, Masashi;
- Nishimura, Koji;
- Tomikawa, Yoshihiro;
- Ejiri, Mitsumu K.;
- Tsuda, Takuo T.
Publication type:
Article
Variations of nitric oxide in the mesosphere and lower thermosphere over Antarctica associated with a magnetic storm in April 2012.
Published in:
Geophysical Research Letters, 2014, v. 41, n. 7, p. 2568, doi. 10.1002/2014GL059360
By:
- Isono, Yasuko;
- Mizuno, Akira;
- Nagahama, Tomoo;
- Miyoshi, Yoshizumi;
- Nakamura, Takuji;
- Kataoka, Ryuho;
- Tsutsumi, Masaki;
- Ejiri, Mitsumu K.;
- Fujiwara, Hitoshi;
- Maezawa, Hiroyuki
Publication type:
Article
First Direct Observational Evidence for Secondary Gravity Waves Generated by Mountain Waves Over the Andes.
Published in:
Geophysical Research Letters, 2020, v. 47, n. 17, p. 1, doi. 10.1029/2020GL088845
By:
- Kogure, Masaru;
- Yue, Jia;
- Nakamura, Takuji;
- Hoffmann, Lars;
- Vadas, Sharon L.;
- Tomikawa, Yoshihiro;
- Ejiri, Mitsumu K.;
- Janches, Diego
Publication type:
Article