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2000
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and N. Yoshida, Ion outflow and inflow at the topside ionosphere observed by
the EISCAT VHF radar, Ann. Geophys., 18, 170-181, 2000.
(25) Hall, C., S. Nozawa, A. Mansan and C. Meek, Determination of turbulent
energy dissipation rate directly from MF-radar determined velocity,
Earth Plannets Sci., 52, 137-141, 2000.
(26) Yoshida, N., S. Watanabe, H. Fukunishi, T. Sakanoi, T. Abe, T. Mukai,
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(27) Nozawa, S. and A. Brekke, A case study of the auroral E region neutral
wind on a quiet summer day: Comparison of three methods of the EISCAT UHF
radar for deriving the E region wind, Radio Science, 35, 845-863, 2000.
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Hagfors, Combined EISCAT and Fabry-Perot Interferometer Measurements of
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(29) Oyama, S., S. Nozawa, S. C. Buchert, M. Ishii, S. Watari, E. Sagawa, W.
Kofman, J. Lilensten, and R. Fujii, Effects of atmospheric oscillations on
the field-aligned ion motions in the polar F-region, Annales Geophysicae,18, 1154-1163, 2000 (September 1, 2000).
(30) Saito, S., F.R.E. Forme, S. C. Buchert, S. Nozawa and R. Fujii, Effects
of a kappa distribution function of electrons on incoherent scatter spectra,
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2001
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isotropic electron temperature in the turbulent E region,
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(32)* Oyama, S., M. Ishii, and Y. Murayama, H. Shinagawa, S. Nozawa,
S. C. Buchert, R. Fujii, W. Kofman,
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F-region, J. Geophys. Res.,106, 18,543-18,554, 2001.
(33) Nagatsuma, T., S. Nozawa, S. C. Buchert, and R. Fujii,
High latitude Pi3 pulsations observed by the EISCAT VHF radar,
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(34) Oyama, S., H. Shinagawa, S. C. Buchert, R. Fujii, S. Nozawa, M. Ishii,
Y. Murayama and W. Kofman, Effects of auroral arcs on the generation of gravity waves in the
auroral F region, Adv. Space Res., 27(10), 1767-1772, 2001.
(35) Nozawa, S., H.-L. Liu, A.D. Richmond, and R. Roble,
Comparison of the auroral E region neutral winds derived with the European
Incoherent Scatter radar and predicted by the National Center for Atmospheric Research
Thermosphere-Ionosphere-Mesosphere-Electrodynamics general circulation model,
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2002
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Field-aligned ion motions in the E and F regions,
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Thermospheric and ionosphric dynamics in the auroral region,
Adv. Space Res., in press, 2002.
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K. Dobashi, and R. Fujii, A comparison study of the auroral E region
neutral winds derived by the EISCAT UHF radar and the Tromsö MF radar,
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(39) Sugino, M., R. Fujii, S. Nozawa, St. C. Buchert, H. J. Opgenoorth, A. Brekke,
Relative contribution of the ionospheric conductivity and the electric field
to the ionospheric current,
J. Geophys. Res.,107, 10.1029/2001JA007545, 2002.
(40) Hall, C. M., S. Nozawa, C. E. Meek, and A. H. Manson,
On the response of upper homosphere turbulence
to solar and geomagnetic disturbances,
Earth Plannets Sci., 54, 699-705, 2002.
(41) Sugino, M., R. Fujii, S. Nozawa, T. Nagatsuma, S. C. Buchert , J.
W. Gjerloev, and M. J. Kosch,
Field-aligned currents and ionospheric parameters deduced from EISCAT radar
measurements in the post-midnight sector, Annales Geophysicae,
20, 1335-1348, 2002.
(42) Danskin, D.W., A.V. Koustov, T. Ogawa, N. Nishitani, S. Nozawa,
S. E. Milan, M. Lester, and D. Andre,
On the factors controlling occurrence of F-region coherent echoes,
Ann. Geophysi., 20, 1385-1397, 2002.
(43) Maeda, S., S. Nozawa, M. Sugino, H. Fujiwara, and M. Suzuki,
Ion and neutral temperature distributions in the E-region observed by the
EISCAT Tromsoe and Svalbard radars, Annales Geophysicae,
20, 1415-1427, 2002.
(44) Koustov, A.V, D.W. Danskin, M. V. Uspensky, T. Ogawa,
P. Janhunen, N. Nishitani, S. Nozawa, M. Lester, and S. Milan,
Velocities of auroral coherent echoes at 12 and 144 MHz,
Annales Geophysicae, 20, 1647-1661, 2002.
2003
(45) Uspensky, M., A. Koustov, P. Janhunen, R. Pellinen, D. Danskin, and S. Nozawa,
STARE Velocities: Importance of Off-Orthogonality and Ion Motions, Ann. Geophysicae,
21, 729-743, 2003.
(46) Nozawa, S., S. Imaida, A. Brekke, C Hall, A Manson, C. Meek, S. Oyama,
K. Dobashi, and R. Fujii, The quasi 2-day wave observed in the polar mesosphere,
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108, 10.1029/2002JD002440, ACL 3-1 - 3-12, 2003.
(47) Hall, C.M, S. Nozawa, C. E. Meek, A. H. Manson, and Yi Luo,
Periodicities in energy dissipation rates in the auroral mesosphere/lower thermosphere,
Ann. Geophysicae, 21, 787-796, 2003.
(48) Ogawa, Y., R. Fujii, S. C. Buchert, S. Nozawa, and S. Ohtani,
Simultaneous ESR and DMSP observations of ion upflow in the dayside polar ionosphere,
J. Geophys. Res., 108, 10.1029/2002JA009590, SIA 1-1 - 1-10, 2003.
(49) Wu, Q., T. K. Kileen, S. Nozawa, D. McEwen,
W. Guo, and S. C. Solomon, Observations of mesospheric neutral wind 12-hour
wave in the Northern Polar Cap, J. Atm. Sol-Terr. Phys., 65, 971-978,
2003.
(50) Oyama, S., S. Nozawa, S. Maeda, Y. Murayama, R. Fujii, and H. Shinagawa,
Field-aligned ion motions in the E-F transition region: 1. Mean characteristics,
J. Geophys. Res., accepted, 2003.
(51) Hall, C. M., T. Aso, A.H. Manson, C.E. Meek, S. Nozawa, and M. Tsutsumi,
High latitude mesospheric mean winds: a comparison between Tromsoe (69N) and Svalbard (78N),
J. Geophys. Res., 108, 4598, doi:10.1029/2003JD003509. 2003.
(52) Nozawa, S., H. Iwahashi, A. Brekke, C. Hall, C. Meek, A. Manson,
S. Oyama, Y. Murayama and R. Fujii, The quasi 2-day wave observed
in the polar mesosphere (2): Comparison of the characteristics observed
at Tromsö and Poker-Flat, J. Geophys. Res., 108 , 101029/2002JD003221,2003.
2004
(53) Manson, A. H., C.E. Meek, C.M. Hall, S. Nozawa, N.J. Mitchell,
D. Pancheva, W. Singer, and P. Hoffmann,
MESOPAUSE DYNAMICS FROM THE SCANDINAVIAN TRIANGLE OF RADARS WITHIN THE PSMOS-DATAR PROJECT,
Ann. Geophysi., 22, 2004.
(54) Fujiwara, H., S. Maeda, M. Suzuki, S. Nozawa, and H. Fukunishi,
Estimates of electromagnetic and turbulent energy dissipation rates under the existence of strong
wind shears in the polar lower thermosphere from the EISCAT Svalbard radar
observations, J. Geophys. Res.,
109, A07306, doi:10.1029/2003JA010046, 2004.
(55) Ogawa, T., S. Nozawa, M. Tsutsumi, N. F. Arnold, N. Nishitani,
N. Sato, and A. S. Yukimatu Arctic and Antarctic polar mesosphere summer echoes observed with
oblique incidence HF radars: Analysis using simultaneous MF and VHF radar data,
Ann. Geophysi., 22, 4049-4059, 2004.
(56) Portnyagin Y. I. , T. V. Solovjova, N. A. Makarov, E. G. Merzlyakov, A. H. Manson,
C. E. Meek, W. Hocking, N. Mitchell, D. Pancheva, P. Hoffmann, W. Singer,
Y. Murayama, K. Igarashi, J. M. Forbes, S. Palo, C. Hall, S. Nozawa,
Monthly mean climatology of the prevailing winds and tides in the
Arctic mesosphere/lower thermosphere, Ann. Geophys., 22, 3395-3410, 2004.
2005
(57) Hall, C. M., T. Aso, M. Tsutsumi, S. Nozawa,
A.H. Manson, and C.E. Meek, Testing the hypothesis of neutral turbulence on
the deduction of ambipolar diffusivities from meteor trail expansion,
Ann. Geophisicae Letter, 23, 1-3, 2005.
(58) Oyama, S., B. J. Watkins, S. Nozawa, S. Maeda,
and M. Conde, Vertical ion motions observed with incoherent-scatter
radars in the polar lower ionosphere,
J. Geophys. Res., in press, 2005.
(59) Hall, C.M., T. Aso, M. Tsutsumi, S. Nozawa,
A.H. Manson and C.E. Meek, A comparison of MLT neutral winds as
determined by meteor and medium frequency radar at 70 N,
Radio Sci., 40, RS4001, doi:10.1029/2004RS003102, 2005.
(60) Maeda, S., S. Nozawa, H. Fujiwara, and Y. Ogawa,
Comparative study of the high-latitude E-region ion and neutral temperatures
in the polar cap and the auroral region derived from the EISCAT
radar observations, J. Geophys. Res.,
110, A08301, 10.1029/2004JA010893, 2005.
(61) S. Nozawa, A. Brekke, S. Maeda, T. Aso, C. Hall, Y. Ogawa,
S. Buchert, J. Roettger, A. Richmond, R. Roble, and R. Fujii,
Mean winds, tides and quasi-2 day wave in the polar lower thermosphere observed in
EISCAT eight day run data in November 2003, J. Geophys. Res.,
110, A12309, doi:10.1029/2005JA0011128, 2005.
(62) Zhigang, Y., Ryoichi Fujii, Satonori Nozawa, Y. Ogawa, Statistical height-dependent relative
importance of the Lorentz force and Joule heating in generating atmospheric gravity waves
in the auroral electrojets, J. Geophys. Res., 110, A12303,
doi:10.1029/2005JA011315, 2005.
2006
(63) Hall, C.M., T. Aso, M. Tsutsumi, S. Nozawa,
C.E. Meek and A.H. Manson, A comparison of meteor and medium frequency radar kilometer
scale MLT dynamics at 70 deg N,
J. Atoms. Solar-Terr. Phys., 68,
309-316, 2006.
(64) Hall, C., S. Nozawa, A. Manson, C. Meek, Tidal signatures in mesospheric turbulence,
Ann. Geophisicae, 24, 453-465, 2006.
(65) Abe, T., J. Kurihara, N. Iwagami, S. Nozawa, S., Y. Ogawa, R. Fujii,
H. Hayakawa, and K. Oyama, Dynamics and energetics in the lower thermosphere in aurora
(DELTA) - Japanese sounding rocket campaign, Earth Plannets Sci., 58, 1161-1171, 2006.
(66) Nozawa, S., Y. Ogawa, A. Brekke, T. Tsuda, C. M. Hall, H. Miyaoka,
J. Kurihara, T. Abe, and R. Fujii, EISCAT observational results during the DELTA campaign,
.Earth Plannets Sci., 58, 1183-1192, 2006.
(67) Uspensky, M. V., A. V. Koustov, and S. Nozawa,
STARE velocity at large flow angles: is it related to the ion acoustic speed?,
Ann. Geophys., 24, 873-885, 2006
(68) Hall, C. M., A. H. Manson, C. E. Meek, and S. Nozawa,
Isolated lower mesospheric echoes seen by medium frequency radar at
70 deg N, 19 deg E, Atmos. Chem. Phys., 6, 5307-5314, 2006.
(69) Ogawa, Y. , S.C. Buchert, R. Fujii, S. Nozawa, and F. Forme ,
Naturally enhanced ion-acoustic lines at high altitudes, Annales Geophysicae,
24, 3351-3364, 2006.
2007
(70) Tsuda, T. T., S. Nozawa, A. Brekke, Y. Ogawa, T. Motoba, R. Roble,
and R. Fujii, An ion drag contribution to the lower thermospheric wind in the
summer polar region, J. Geophys. Res., 112, A06319, doi:10.1029/2006JA011785,2007.
(71) Hall, C.M., A. Brekke, A. H. Manson, C. E. Meek, S. Nozawa,
Trends in mesospheric turbulence at 70deg N,
Atmospheric Science Lttters, 8, 80-84, 2007.
(72) Fujiwara, H., R. Kataoka, M. Suzuki, S. Maeda, S. Nozawa, K. Hosokawa,
H. Fukunishi, N. Sato, and M. Lester, Electromagnetic energy deposition rate in the
polar upper thermosphere derived from the EISCAT Svalbard radar and
CUTLASS Finland radar observations, Annales Geophysicae,
25, 2393-2403, 2007.
(73) Hall, CM., A. H. Manson, C. E. Meek, and S. Nozawa,
Mesospheric turbulence during PMWE-conducive conditions,
Atmos. Chem. Phys. Discuss., 7, 7035-7049, 2007.
2008
(74) Ogawa, Y., K. Seki, M. Hirahara, K. Asamura, T. Sakanoi, S. C. Buchert, Y. Ebihara,
Y. Obuchi, A. Yamazaki, I. Sandahl, S. Nozawa, and R. Fujii,
Coordinated EISCAT Svalbard radar and Reimei satellite observations of ion
upflows and suprathermal ions, J. Geophys. Res., 2007JA012791,
113, doi:10.1029/2007JA012791, 2008.
(75) Hall, C., C. Meek, A. Manson, S. Nozawa, Turbopause determination, climatology and climatic trends,
using medium frequency radars at 52degN and 70degN, J. Geophys. Res., 113,
D13104, doi:10.1029/2008JD009938, 2008.
(76) Oyama, S. B. J. Watkins, S. Maeda, H. Shinagawa, S. Nozawa, Y. Ogawa, A. Brekke,
C. Lathuillere, and W. Kofman, Generation of the lower-thermospheric vertical wind estimated with
the EISCAT KST radar at high latitudes during periods of moderate geomagnetic disturbance,
Annales Geophysicae, 26, 1491-1505, 2008.
(77) Buchert, S., T. Tsuda, R. Fujii, and S. Nozawa, The Pedersen current carried by electrons:
A non-linear response of the ionosphere to magnetospheric forcing,
Annales Geophysicae, 26, 2837-2844, 2008.
2009
(78) Tsuda, T. T., S. Nozawa>, S. Oyama, T. Motoba, Y. Ogawa, H. Shinagawa, N. Nishitani, K. Hosokawa,
N. Sato, M. Lester, and R. Fujii, Acceleration mechanism of high-speed neutral wind observed in
the polar lower thermosphere, J. Geophys. Res., 114, doi:10.1029/2008JA013867, 2009
(79) Ogawa, Y. S. C. Buchert, R. Fujii, S. Nozawa,
and A. P. van Eyken, Characteristics of ion upflow and downflow observed with EISCAT
Svalbard radar,
J. Geophys. Res., 114, A05305, doi:10.1029/2008JA013817, 2009.
(80) Oyama, S., T. T. Tsuda, T. Sakanoi, Y. Obuchi, K. Asamura, M. Hirahara,
A. Yamazaki, Y. Kasaba, R. Fujii, S. Nozawa, and B. J. Watkins,
Spatial evolution of frictional heating and the predicted thermospheric wind
effects in the vicinity of an auroral arc measured with the Sondrestrom
incoherent-scatter radar and the Reimei satellite,
J. Geophys. Res, 114, A07311, doi:10.1029/2009JA014091, 2009.
(81) Fujii, R., Y. Iwata, S. Oyama, S. Nozawa, and Y. Ogawa, Relations between
proton auroras, intense electric field and ionospheric electron density depletion,
J. Geophys. Res., 114, A09304, doi:10.1029/2009JA014319, 2009.
(82) Maeda, S, Y. Ogawa, K. Hosokawa, S. Nozawa, S. Oyama, T. Tsuda,
and A. Brekke, Ion heating in high-speed flow channel within the duskside cell
of the polar-cap ion convection under large IMF-By condition,
J. Geophys. Res., 114, A11307, doi:10.1029/2009JA014300 2009.
(83) Kurihara, J., S. Oyama, S. Nozawa, T. Tsuda, R. Fujii, Y. Ogawa, H. Miyaoka, N. Iwagami,
T. Abe, K.-I. Oyama, M. Kosch, A.L. Aruliah, E. Griffin, K. Kauristie,
Temperature enhancements and vertical winds in the lower thermosphere associated
with auroral heating during the Dynamics and Energetics of the Lower
Thermosphere in Aurora (DELTA) campaign,
J. Geophys. Res., 114, A12306, doi:10.1029/2009JA014392, 2009.
(84) Ogawa, Y., I. Haeggstroem, S. C. Buchert, K. Oksavik, S. Nozawa,
M. Hirahara, A. P. van Eyken, T. Aso, and R. Fujii,
On the source of the polar wind in the polar topside ionosphere: First results from
the EISCAT Svalbard radar,
Geophys. Res. Lett., 36, L24103, doi:10.1029/2009GL041501, 2009.
2010
(85) Ogawa, Y., S. C. Buchert, A. Sakurai, S. Nozawa, R. Fujii,
Solar activity dependence of ion upflow in the polar ionosphere observed with the
EISCAT Tromsoe UHF radar, J. Geophys. Res., 115, doi:10.1029/2009JA014766, 2010.
(86) Nozawa, S., Y. Ogawa, S. Oyama, H. Fujiwara, T. Tsuda, A. Brekke, C. Hall,
Y. Murayama, S. Kawamura, H. Miyaoka, and R. Fujii, Research on the wind dynamics
above Tromsoe in the polar lower thermosphere using the EISCAT long run data set
obtained in September 2005, J. Geophys. Res., 115, doi:10.1029/2009JA015237, 2010.
(87) Kurihara, J., Y. Ogawa, S. Oyama, S. Nozawa, M. Tsutsumi, C. M. Hall, Y. Tomikawa, and R. Fujii,
Links between a stratospheric sudden warming and thermal structures and dynamics in the
high-latitude mesosphere, lower thermosphere, and ionosphere,
Geophys. Res. Lett., 37, L13806, doi:10.1029/2010GL043643, 2010.
(88) Kurihara, J., Y. Koizumi-Kurihara, N. Iwagami, T. Suzuki, A. Kumamoto, T. Ono, M. Nakamura, M. Ishii,
A. Matsuoka, K. Ishisaka, T. Abe, and S. Nozawa, Horizontal structure of sporadic E
layer observed with a rocket-borne magnesium ion imager,
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(89) Oyama, S., K. Shiokawa, J. Kurihara, T. T. Tsuda, S. Nozawa, Y. Ogawa, Y. Otsuka, and B. J.
Watkins, Lower-thermospheric wind fluctuations measured with an FPI in pulsating aurora at Tromsoe,
Norway, Ann. Geophys., 28, 1847-1857, 2010.
(90) Kosch, M., Y. Ogawa, M. Rietveld, S. Nozawa, and R. Fujii, An analysis of
pump-induced artificial ionospheric ion upwelling at EISCAT,
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2011
(91) Ogawa, Y., S. C. Buchert, I. Haggstrom, M. T. Rietveld, R. Fujii, S. Nozawa, and H.
Miyaoka, On the statistical relation between ion upflow and naturally enhanced ion-acoustic lines
observed with the EISCAT Svalbard radar, J. Geophys. Res., 116, A03313, doi:10.1029/2010JA015827,
2011.
(92) Kosch, M., E. Mjolhus, M. Ashrafi, M. Rietveld, T. Yeoman, S. Nozawa,
Angular dependence of pump-induced bottom- and top-side ionospheric plasma turbulence at EISCAT,
J. Geophys. Res., 116, A03322, doi:10.1029/2010JA016014, 2011.
(93) Kosch, M., Ho-Ching Iris Yiu, Callum Anderson, Takuo Tsuda, Yasunobu Ogawa, Satonori Nozawa,
Anasuya Aruliah,
Victoria Howells, Lisa Baddeley, Ian McCrea, James Wild, Meso-scale observations of Joule heating near an
auroral arc and ion-neutral collision frequency in the polar cap E-region,
J. Geophys. Res., 116, A05321, doi:10.1029/2010JA016015, 2011.
(94) Tsuda, T. T., S. Nozawa, T. D. Kawahara, T. Kawabata,
N. Saito, S. Wada, C. M. Hall, S. Oyama, Y. Ogawa, S. Suzuki, T. Ogawa,
T. Takahashi, H. Fujiwara, R. Fujii, N. Matuura, and A. Brekke,
Fine structure of sporadic sodium layer observed with a sodium lidar at
Tromsoe, Norway, Geophys. Res. Lett., 38, L18102, doi:10.1029/2011GL048685, 2011.
2012
(95) Fujiwara. H., S. Nozawa, S. Maeda, Y. Ogawa, Y. Miyoshi, H. Jin, H. Shinagawa, and
K. Terada, Polar cap thermosphere and ionosphere during the solar minimum period: EISCAT
Svalbard radar observations and GCM simulations,
Earth Planets Space, 64, 459-465, 2012.
(96) Gorin, J. D., A. V. Koustov, R. A. Makarevich, J.-P. St.-Maurice, and
S. Nozawa, Velocity of E-region HF echoes under strongly-driven electrojet conditions,
Ann. Geophys., 30, 235?250, 2012.
(97) Shiokawa, K., Y. Otsuka, S. Oyama, S. Nozawa, M. Satoh, Y. Katoh, Y. Hamaguchi,
Y. Yamamoto and J. Meriwether, Development of low-cost sky-scanning Fabry-Perot interferometers
for airglow and auroral studies, Earth Planets Space, 64, 1033-1046, 2012.
(98) Nozawa, S., C.M. Hall, M. Tsutsumi, A. Brekke, Y. Ogawa, T. T. Tsuda, S. Oyama,
R. Fujii, Mean winds, tides, and quasi-2 day waves above Bear Island, JASTP, 90-91, 26-44,
2012.
(99) Shiokawa, K., M. Mori, Y. Otsuka, S. Oyama, and S. Nozawa, Motion of high-latitude
nighttime medium-scale traveling ionospheric disturbances associated with auroral brightening,
JGR, 117, A10316, doi:10.1029/2012JA017928, 2012.
2013
(100) Shiokawa, K., M. Mori, Y. Otsuka, S. Oyama, S. Nozawa,
S. Suzuki, and M. Connors, Observation of nighttime medium-scale travelling
ionospheric disturbances by two 630-nm airglow imagers near the auroral zone,
J. Atmos. Solar-Terr. Phys., in press, 2013.
(101) Matuura, N., T. Tsuda, and S. Nozawa, Field-Aligned Current Loop Model on
Formation of Sporadic Metal Layers, JGR,
118, doi:10.1002/jgra.50414, 2013.
(102) Tsuda, T., S. Nozawa, T. D. Kawahara, T. Kawabata, N. Saito,
S. Wada, Y. Ogawa, S. Oyama, C. M. Hall, M. Tsutsumi, M. K. Ejiri,
S. Suzuki, T. Takahashi, T. Nakamura,
Decrease in sodium density observed during auroral particle precipitation
over Tromsoe Norway,GRL, 40, DOI: 10.1002/grl.50897, 2013.
(103) Ogawa, Y., M. Sawatsubashi, S. C. Buchert, K. Hosokawa,
S. Taguchi, S. Nozawa, S. Oyama, T. T. Tsuda, and R. Fujii,
Relationship between auroral substorm and ion upflow in the nightsidem
polar ionosphere, J. Geophys. Res., 118, 7426-7437, DOI: 10.1002/2013JA018965, 2013.
(104) Oyama, S., T. Watanabe, R. Fujii, S. Nozawa, and T. T. Tsuda,
Estimation of the layered ionospheric conductance using data from a
multi-wavelength photometer at the European Incoherent Scatter (EISCAT)
radar site, Antarctic Record, 57(3), 339-356, 2013.
2014
(105) Nozawa, S., T. D. Kawahara, N. Saito, C. M. Hall,
T. T. Tsuda, T. Kawabata, S. Wada, A. Brekke, T. Takahashi, H. Fujiwara,
Y. Ogawa, and R. Fujii, Variations of the neutral temperature and sodium
density between 80 and 107 km above Tromso during the winter of 2010-2011
by a new solid state sodium LIDAR, J. Geophys. Res.,
119, doi:10.1002/2013JA019520, 441-451, 2014.
(106) Fujiwara, H., S. Nozawa, Y. Ogawa, R. Kataoka,
Y. Miyoshi, H. Jin, and H. Shinagawa, Extreme ion heating
in the dayside ionosphere in response to arrival of a coronal
mass ejection on March 12, 2012, Ann. Geophys., 32, 831-839, 2014.
(107) Ogawa, Y., T. Motoba, S. C. Buchert, I. Haaggstroem and
S. Nozawa, Upper Atmosphere cooling over the past 33
years, GRL, 41, 5629?5635, doi:10.1002/2014GL060591, 2014.
(108) Shiokawa, K., A. Hashimoto, T. Hori, K. Sakaguchi, Y. Ogawa,
E. Donovan, E. Spanswick, M. Connors, Y. Otsuka, S.-I. Oyama,
S. Nozawa, K. McWilliams, Auroral fragmentation into patches,
J. Geophys. Res., 119, 8249-8261,
doi:10.1029/2014JA020050, 2014.
(109) Takahashi, T., S. Nozawa, M. Tsutsumi, C. Hall,
S. Suzuki, T. T. Tsuda, T. D. Kawahara, N. Saito, S. Oyama,
S. Wada, T. Kawabata, H. Fujiwara, A. Brekke, A. Manson,
C. Meek, and R.Fujii, A case study of gravity wave dissipation in the polar
MLT region using sodium LIDAR and radar data,
Ann. Geophys., 32, 1195-1205, 2014.
2015
(110) Wu, Qian and S. Nozawa, Mesospheric and thermospheric
observations of the January 2010 stratospheric warming event,
JASTP, 123, 22-38, 2015.
(111) Takahashi, T., S. Nozawa, T. T. Tsuda, Y. Ogawa, N. Saito, T. Hidemori,
T. D. Kawahara, C. Hall, H. Fujiwara, N. Matuura, A. Brekke, M. Tsutsumi, S. Wada, T. Kawabata, S. Oyama, and R. Fujii, A case study on generation mechanisms of a sporadic sodium layer above Tromsoe (69.6 deg N) during a night of high auroral activity,
Ann. Geophys., in press, 2015.
(112) Hashimoto A., K. Shiokawa, Y. Otsuka, S.-I. Oyama, S. Nozawa, T. Hori, M.
Lester, and M. Johnsen, Statistical study of auroral fragmentation into
patches, J. Geophys. Res., in press, doi: doi:10.1029/2015JA021000, 2015.
(113) Tsuda, T. T., S. Nozawa, T. D. Kawahara, T. Kawabata, N. Saito, S. Wada,
C. M. Hall, M. Tsutsumi, Y. Ogawa, S. Oyama, T. Takahashi, M. K. Ejiri, T. Nishiyama,
T. Nakamura, and A. Brekke, A sporadic sodium layer event detected with five-directional
lidar and simultaneous wind, electron density, and electric field observation at Tromsoe,
Norway, Geophys. Res. Lett., 42, 9190-9196, 2015GL066411, 2015.
2016
(114) Hall, C.M., S. E. Holmen, C. E. Meek, A. H. Manson, and S. Nozawa,
Change in turbopause altitutude at 52 and 70 deg N, Atmos. Chem. Phys., 16, 2299-2308, 2016.
(115) Tsuda, T., M. Yamamoto, H. Hashiguchi, K. Shiokawa, Y. Ogawa, S. Nozawa, H. Miyaoka,
and A. Yoshikawa, A proposal on the study of solar-terrestrial coupling processes with
atmospheric radars and ground-based observation network,
Radio Sci., 51, 9, 1587-1599, doi:10.1002/2016RS006035, 2016.
2017
(116) Takahashi, T., K. Hosokawa, S. Nozawa, T. Tsuda, Y. Ogawa, M. Tsutsumi,
Y. Hiraki, H. Fujiwara, T. Kawahara, N. Saito, S. Wada, T. Kawabata, C. Hall,
Depletion of mesospheric sodium during extended period of pulsating aurora,
J. Geophys. Res., 122, 1212-1220, 2017.
(117) Kawahara, T.D., S. Nozawa, N. Saito, T, Kawabata, T.T. Tsuda, and S. Wada,
Sodium temperature/wind LIDAR based on laser-diode-pumped Nd:Yag lasers deployed at
Tromsö, Norway (69.6, 19.2), Optics Express, 25, A491-A501, 2017.
(118) Nakamura, Y., K. Shiokawa, Y. Otsuka, S.-I. Oyama, S. Nozawa,
T. Komolmis, S. Komonjida, D. Neudegg, C. Yuile, J. Meriwether, H. Shinagawa,
and H. Jin, Measurement of thermospheric temperatures using OMTI Fabry-Perot
interferometers with 70 mm etalon,
Earth, Plan. and Space, 69, doi: 10.1186, 25, A491-A501, 2017.
(119) Adachi, K., S. Nozawa, Y. Ogawa, A. Brekke, C. M. Hall,
R. Fujii, Evaluation of a method to derive ionospheric conductivities using two
auroral emissions (428 and 630 nm) measured with a photometer at
Tromsö (69.6N), Earth, Planets and Space,
Earth, Planets and Space, 69: 90. doi:10.1186/s40623-017-0677-4, 2017.
2018
(120) Tsuda, T. T., M. T. Rietveld, M. J. Kosch, S. Oyama, K. Hosokawa,
S. Nozawa, T. Kawabata, A. Mizuno, and Y. Ogawa, Survey of
conditions for artificial aurora experiments at EISCAT Tromsö
using dynasonde data, Earth Planets Space, 70, 40, doi:10.1186/s40623-018-0805-9, 2018.
(121) Tsuda, T.T., M.T. Rietveld, M.J. Kosch, S. Oyama, Y. Ogawa, K. Hosokawa, S. Nozawa,
T. Kawabata, and A. Mizuno, Survey of conditions for artificial aurora experiments by the
second electron gyro-harmonic at EISCAT Tromsoe using dynasonde data,
Earth, Planets and Space 2018, 70:94
https://doi.org/10.1186/s40623-018-0864-y
(122) Nozawa, S., T. Kawabata, K. Hosokawa, Y. Ogawa, T. Tsuda,
A. Mizuno, R. Fujii, and C. Hall, A new five-wavelength photometer operated in Tromsö
(69.6N, 19.2E), Earth, Planets and Space, 10.1186/s40623-018-0962-x, 70:193, 2018.
URL
2019
(123) Mondal, S., S. Sarkhel, J. Agarwa, D. Chakrabarty, R. Sekar, T. Yuan, X. Cai, A. Lu,
S. Nozawa, N. Saito, T. Kawahara, M. Mlynczak, J. Russell, III,
On the long-lasting "C-type" structures in the sodium lidargram:
The lifetime of Kelvin-Helmholtz billows in the mesosphere and lower thermosphere region",
Journal of Geophysical Research - Space Physics., 10.1029/2019JA026630, 2019.
(124) Yamamoto, M., W. K. Hocking, S. Nozawa, J. Vierinen, H. Liu,
and N. Nishitani, https://doi.org/10.1186/s40623-019-1070-2,
Special issue ¿Recent Advances in MSTand EISCAT/Ionospheric Studies ¿ Special Issue of the Joint MST15 and
EISCAT18 Meetings, May 2017, Earth, Planets and Space, 71:99, 2019
(125) Xu, H., K. Shiokawa, S. Oyama, and S. Nozawa,
High-latitude thermospheric wind study using a Fabry-Perot interferometer at Tromso in Norway:
averages and variations during quiet times, Earth, Planets and Space,71:110, 10.1186/s40623-019-1093-8, 2019.
2020
(126) 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, and R. Fujii,
Development of low-cost multi-wavelength imager system for studies of aurora and airglow,
Polar Science, 23, 100501, https://doi.org/10.1016/j.polar.2019.100501, 2020.
(127) Pancheva, D., P. Mukhtarov, C. Hall, C. Meek, M. Tsutsumi, N. Pedatella, S. Nozawa, and A. Manson,
Climatology of the main (24-h and 12-h) tides observed by meteor radars at Svalbard and Tromsoe:
Comparison with the Models CMAM-DAS and WACCM-X,
JASTP, 207, https://doi.org/10.1016/j.jastp.2020.105339, 2020
(128) Kawamura, Y., K. Hosokawa, S. Nozawa, Y. Ogawa, T. Kawabata, S. 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.
(129) Iino, T., H. Sagawa, T. Tsukagoshi, and S. Nozawa,
A belt-like distribution of gaseous hydrogen cyanide on Neptune's equatorial
stratosphere detected by ALMA, Astrophysical Journal Letters, 10.3847/2041-8213/abbb9a, 2020.
(130) Tsuda, T. T., C. Li, S. Hamada, K. Hosokawa, S. Oyama, S. Nozawa, T. Kawabata, A. Mizuno,
J. Kurihara, T. Nishiyama, and M. J. Kosch, OI 630.0 nm and N2 1PG emissions in pulsating aurora events observed
by an optical spectrograph at Tromsoe, Norway",JGR, 125, https://doi.org/10.1029/2020JA028250, 2020.
(131) Xia, Y., S. Nozawa, J. Jiao, J. Wang, F. Li, X. Cheng, Y. Yang, L. Du, and G. Yang,
Statistical study on sporadic sodium layers (SSLs) based on diurnal sodium lidar observations at Beijing,
China (40.5 deg.N, 116 deg.E), JASTP, 212, https://doi.org/10.1016/j.jastp.2020.105512, 2020.
2021
(132) Narayanan, V. L., S. Nozawa, S. Oyama, I. Mann, K. Shiokawa, Y. Otsuka, N. Saito, S. Wada,
T. D. Kawahara, and T. Takahashi, Formation of a bottomside secondary sodium layer associated with the
passage of multiple mesospheric frontal systems, Atm. Chem. Phys.,
acp-2020-803, 2020.
(133) Hall, C.M., and S. Nozawa, On the temporal evolution of turbopause altitude, 1996-2021,
70 deg N, 19 deg E, Experimental Results, Experimental Results, 2021, 2, e17, 1-7, doi:10.1017/exp.2021.6
URL
(134) Stober, G., A. Kozlovsky, A. Liu, Z. Qiao, M. Tsutsumi, C. Hall, S. Nozawa,
M. Lester, E. Belova, J. Kero, P. J. Espy, R. E. Hibbins, and N. Mitchell,
Atmospheric tomography using the Nordic Meteor Radar Cluster and Chilean Observation Network De
Meteor Radars: network details and 3DVAR retrieval, Atmospheric Measurement Techniques,
14, 6509-6532, 2021 URL
2022
(135) Nanjo, S., S. Nozawa, M. Yamamoto, T. Kawabata, M. G. Johnsen, T. T. Tsuda, and K. Hosokawa,
An Automated Auroral Detection System Using Deep Learning:
Real-time Operation in Tromsoe, Norway, Scientific Reports, DOI: 10.1038/s41598-022-11686-8, 2022.
URL Press release
(136)
Yuan Xia, Jing Jiao, Satonori Nozawa, Xuewu Cheng, Jihong Wang, Chunhua Shi,
Lifang Du, Yajuan Li, Haoran Zheng, Faquan Li, and Guotao Yang,
Significant enhancements of the mesospheric Na layer bottom below 75 km observed by a
full-diurnal-cycle lidar at Beijing (40.41degN, 116.01degE), China, Atmos. Chem. Phys.,
22, 13817-13831, 2022,
https://doi.org/10.5194/acp-22-13817-2022
(137) Gunter Stober, Alan Liu, Alexander Kozlovsky, Zishun Qiao, Ales Kuchar,
Christoph Jacobi, Chris Meek, Diego Janches, Guiping Liu, Masaki Tsutsumi,
Njal Gulbrandsen, Satonori Nozawa, Mark Lester,
Evgenia Belova, Johan Kero, and Nicholas Mitchell,
Meteor Radar vertical wind observation biases and mathematical debiasing strategies including a
3DVAR+DIV algorithm, Atmos. Meas. Tech., 15, 5769-5792, 2022,
https://doi.org/10.5194/acp-22-13817-2022
2023
(138) Satonori Nozawa, Norihito Saito, Takuya Kawahara, Satoshi Wada,
Takuo T. Tsuda, Sakiho Maeda, Toru Takahashi, Hitoshi Fujiwara,
Viswanathan Lakshmi Narayanan, , Tetsuya Kawabata, I, Magnar G. Johnsen,
A statistical study of convective and dynamic instabilities in the polar upper mesosphere
above Tromsoe, EPS, 75:22, 2023
https://doi.org/10.1186/s40623-023-01771-1
(139) Gunter Stober, Alan Liu, Alexander Kozlovsky, Zishun Qiao, Witali Krochin, Gouchun Shi, Masaki Tsutsumi, Nj.l Gulbrandsen,
Satonori Nozawa, Mark Lester, Evgenia Belova,
Johan Kero, and Nicholas Mitchell,
Identifying gravity waves launched by the Hunga Tonga-Hunga Haapai
volcanic eruption in mesosphere/lower thermosphere winds derived from
CONDOR and the Nordic Meteor Radar Cluster,
Annales Geophysicae, 41, 197-208, 2003.
Link
(140) Matuura N., R. Fujii, and S. Nozawa, The participation of Japan in the EISCAT Scientific Association,
History of Geo- and Space Sciences, 14, 61-69, 2023.
Link
(141)
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 Luebken, Marco Milla, Satonori Nozawa, Yasunobu Ogawa, Kazuo Shiokawa, M. Joan Alexander, Takuji Nakamura, William E. Ward, Coupling Study by Observations and Modelling (ICSOM): Concept, Campaigns, and Initial Results, JGR, 128, 2023.
First published: 29 May 2023, Link
(142)
Hosokawa, K., S.-I. Oyama, Y. Ogawa, Y. Miyoshi, S. Kurita, M. Teramoto, S. Nozawa, T. Kawabata,
Y. Kawamura, Y.-M. Tanaka, H. Miyaoka, R. Kataoka, K. Shiokawa, U. Brändström, E. Turunen,
T. Raita, M. G. Johnsen, C. Hall, D. Hampton, Y. Ebihara, Y. Kasahara, S. Matsuda, I. Shinohara, and R. Fujii,
A ground-based instrument suite for integrated high-time resolution measurements of pulsating aurora with Arase,
JGR, accepted, 2023.
(143) Florian Guonzkofer, Dimitry Pokhotelov, Gunter Stober, Ingrid Mann, Sharon L. Vadas, Erich Becker, Anders Tjulin,
Alexander Kozlovsky, Masaki Tsutsumi, Njaal Gulbrandsen,Satonori Nozawa, Mark Lester, Evgenia Belova, Johan Kero,
Nicholas J. Mitchell, and Claudia Borries, Inferring neutral winds in the ionospheric transition region from AGW-TID,
Ann Geophys, 41, 409-428, 2023, https://doi.org/10.5194/angeo-41-409-2023.
Special issue: Special issue on the joint 20th International EISCAT Symposium and 15th International Workshop on Layered Phenomena in the Mesopause Region
2024
(144) Nishiyama Takanori, Masato Kagitani, Senri Furutachi, Yuki Iwasa, Yasunobu Ogawa, Takuo T Tsuda, Peter Dalin, Fuminori Tsuchiya,
Satonori Nozawa, and Fred Sigernes, The first simultaneous spectroscopic and monochromatic imaging observations of short-wavelength infrared aurora of N2+ Meinel (0,0) band at 1.1 μm with incoherent scatter radar, Earth, Planets and Space, 76, 30, https://doi.org/10.1186/s40623-024-01969-x, 2024
(145) Gunter Stober, Sharon L. Vadas, Erich Becker, Alan Liu, Alexander Kozlovsky, Diego Janches, Zishun Qiao,
Witali Krochin, Guochun Shi, Wen Yi, Jie Zeng, Peter Brown, Denis Vida, Neil Hindley,
Christoph Jacobi, Damian Murphy, Ricardo Buriti, Vania Andrioli, Paulo Batista, John Marino,
Scott Palo, Denise Thorsen, Masaki Tsutsumi, Njaa¥l Gulbrandsen, Satonori Nozawa,
Mark Lester, Kathrin Baumgarten, Johan Kero, Evgenia Belova, Nicholas Mitchell, and Na Li, Gravity waves generated by the Hunga
Tonga-Hunga Ha'apai volcanic eruption and their global propagation in the mesosphere/lower thermosphere observed by meteor radars and modeled with the High-Altitude General Mechanistic Circulation Model, ACP, 24(8), 4851-4873, 2024.
(146) Nanjo Sota, Gabriel Arne Hofstra, Kazuo Shiokawa, Atsuki Shinbori, Satonori Nozawa,
and Keisuke Hosokawa, Post-midnight purple arc and patches appeared poleward of the auroral oval: Dawnside counterpart of STEVE?,
EPS, 76:55, https://doi.org/10.1186/s40623-024-01995-9, 2024
(147) Gunnarsdottir, Tinna L., Ingrid Mann, Wuhu Feng, Devin R. Huyghebaert, Ingemar Haeggstroem, Yasunobu Ogawa, Norihito Saito,
Satonori Nozawa, and Takuya D. Kawahara, Influence of meteoric smoke particles on the incoherent scatter measured with EISCAT VHF,
ANGEO, 42, 213-228, 2024, https://doi.org/10.5194/angeo-42-213-2024 (04 Jun 2024)
(148) Vierinen, J., F. L. Poblet, J. L. Chau, V. Avsarkisov, H. PaaLecseli, M. Tsutsumi, S. Nozawa,
M.G. Johnsen, R. Latteck, N. Gulbrandsen, Dissipation rates of mesospheric stratified turbulence from multistatic meteor-radar observations, GRL, 51, 2024, https://doi.org/10.1029/2023GL105751
(149) Chauhan, N., K. Shiokawa, S. Gurubaran, S. Nozawa, S.-I. Oyama, and T. Nakamura, Occurrence of mesospheric frontal structures over the high latitude station, Tromsoe, Norway. JGRs 129, 2023JA032243. https://doi.org/10.1029/2023JA032243, 2024
(150)
Yamauchi, M., S. Christon, I. Dandouras, S. Haaland, D. Kastinen,
L.M. Kistler, I. Mann, S. Nozawa, J.M.C. Plane, Y. Saito,
L. Schulz, S. Watababe, P. Wurz, and A.W. Yau,
Heavy Molecular and Metallic Ions in the Magnetosphere,
Space Sci Rev 220, 82 (2024), https://doi.org/10.1007/s11214-024-01114-w
Comments:
(32)* "Nozawa, S." was removed by mistake from the author list published in JGR, but it
is proven
by the responsible editor (Prof Matsumoto) that he is on the list.