Sodium temperature/wind lidar based on laser-diode-pumped Nd: YAG lasers deployed at Tromsø, Norway (69.6 N, 19.2 E) TD Kawahara, S Nozawa, N Saito, T Kawabata, TT Tsuda, S Wada
Optics Express 25 (12), A491-A501, 2017
45 2017 A thermospheric Na layer event observed up to 140 km over Syowa Station (69.0 S, 39.6 E) in Antarctica TT Tsuda, X Chu, T Nakamura, MK Ejiri, TD Kawahara, AS Yukimatu, ...
Geophysical Research Letters 42 (10), 3647-3653, 2015
35 2015 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 … A Shinbori, Y Otsuka, T Sori, M Nishioka, S Perwitasari, T Tsuda, ...
Earth, Planets and Space 74 (1), 1-17, 2022
34 2022 Variations of the neutral temperature and sodium density between 80 and 107 km above Tromsø during the winter of 2010–2011 by a new solid‐state sodium lidar S Nozawa, TD Kawahara, N Saito, CM Hall, TT Tsuda, T Kawabata, ...
Journal of Geophysical Research: Space Physics 119 (1), 441-451, 2014
30 2014 Fine structure of sporadic sodium layer observed with a sodium lidar at Tromsø, Norway TT Tsuda, S Nozawa, TD Kawahara, T Kawabata, N Saito, S Wada, ...
Geophysical research letters 38 (18), 2011
26 2011 Decrease in sodium density observed during auroral particle precipitation over Tromsø, Norway TT Tsuda, S Nozawa, TD Kawahara, T Kawabata, N Saito, S Wada, ...
Geophysical research letters 40 (17), 4486-4490, 2013
23 2013 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) T Nishiyama, K Sato, T Nakamura, M Tsutsumi, T Sato, M Kohma, ...
Geophysical research letters 42 (7), 2100-2108, 2015
22 2015 Lower-thermospheric wind fluctuations measured with an FPI during pulsating aurora at Tromsø, Norway S Oyama, K Shiokawa, J Kurihara, TT Tsuda, S Nozawa, Y Ogawa, ...
Annales Geophysicae 28 (10), 1847-1857, 2010
21 2010 Temperature enhancements and vertical winds in the lower thermosphere associated with auroral heating during the DELTA campaign J Kurihara, S Oyama, S Nozawa, TT Tsuda, R Fujii, Y Ogawa, H Miyaoka, ...
Journal of Geophysical Research: Space Physics 114 (A12), 2009
20 2009 Acceleration mechanism of high‐speed neutral wind observed in the polar lower thermosphere TT Tsuda, S Nozawa, S Oyama, T Motoba, Y Ogawa, H Shinagawa, ...
Journal of Geophysical Research: Space Physics 114 (A4), 2009
18 2009 A sporadic sodium layer event detected with five‐directional lidar and simultaneous wind, electron density, and electric field observation at Tromsø, Norway TT Tsuda, S Nozawa, TD Kawahara, T Kawabata, N Saito, S Wada, ...
Geophysical Research Letters 42 (21), 9190-9196, 2015
17 2015 Field‐aligned current loop model on formation of sporadic metal layers N Matuura, T Tsuda, S Nozawa
Journal of Geophysical Research: Space Physics 118 (7), 4628-4639, 2013
17 2013 A new five-wavelength photometer operated in Tromsø (69.6° N, 19.2° E) S Nozawa, T Kawabata, K Hosokawa, Y Ogawa, T Tsuda, A Mizuno, ...
Earth, Planets and Space 70, 1-31, 2018
15 2018 Rayleigh/Raman lidar observations of gravity wave activity from 15 to 70 km altitude over Syowa (69 S, 40 E), the Antarctic M Kogure, T Nakamura, MK Ejiri, T Nishiyama, Y Tomikawa, M Tsutsumi, ...
Journal of Geophysical Research: Atmospheres 122 (15), 7869-7880, 2017
15 2017 Lower thermospheric wind variations in auroral patches during the substorm recovery phase S Oyama, K Shiokawa, Y Miyoshi, K Hosokawa, BJ Watkins, J Kurihara, ...
Journal of Geophysical Research: Space Physics 121 (4), 3564-3577, 2016
15 2016 Mesoscale observations of Joule heating near an auroral arc and ion‐neutral collision frequency in the polar cap E region MJ Kosch, I Yiu, C Anderson, T Tsuda, Y Ogawa, S Nozawa, A Aruliah, ...
Journal of Geophysical Research: Space Physics 116 (A5), 2011
15 2011 A case study on generation mechanisms of a sporadic sodium layer above Tromsø (69.6 T Takahashi, S Nozawa, TT Tsuda, Y Ogawa, N Saito, T Hidemori, ...
Annales Geophysicae 33 (8), 941-953, 2015
14 2015 The Pedersen current carried by electrons: a non-linear response of the ionosphere to magnetospheric forcing SC Buchert, T Tsuda, R Fujii, S Nozawa
Annales geophysicae 26 (9), 2837-2844, 2008
14 2008 An ion drag contribution to the lower thermospheric wind in the summer polar region TT Tsuda, S Nozawa, A Brekke, Y Ogawa, T Motoba, R Roble, R Fujii
Journal of Geophysical Research: Space Physics 112 (A6), 2007
13 2007 EISCAT observational results during the DELTA campaign S Nozawa, Y Ogawa, A Brekke, T Tsuda, H CM, H Miyaoka, J Kurihara, ...
Earth, planets and space 58 (9), 1183-1191, 2006
13 2006 