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Viser treff 1-50 av 177 << Forrige 1 2 3 4    Neste >>

2021
1 Hall, Chris; Johnsen, Magnar Gullikstad.
On the correction of temperatures derived from meteor wind radars due to geomagnetic activity. Experimental Results 2021
UiT Untitled
 
2 Pancheva, Dora; Mukhtarov, P; Hall, Chris; Smith, A. K.; Tsutsumi, Masaki.
Climatology of the Short-Period (8-h and 6-h) Tides Observed by Meteor Radars at Tromsø and Svalbard. Journal of Atmospheric and Solar-Terrestrial Physics 2021
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3 Yi, Wen; Xue, Xianghui; Reid, Iain; Murphy, Damian J.; Hall, Chris; Tsutsumi, Masaki; Ning, Baiqi; Li, Guozhu; Yang, Guotao.
Climatology of interhemispheric mesopause temperatures using the high- and middle-latitude meteor radars. Journal of Geophysical Research (JGR): Atmospheres 2021
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2020
4 Emanuelsen, Per Ivar; Hall, Chris; Johnsen, Magnar Gullikstad.
Simple Minimalistic Offline Plotting of CADI Data Files. web-based: INAG - Ionosonde Network Advisory Group 2020 4 s.
UiT Untitled
 
5 Hall, Chris; Adami, Chris; Tsutsumi, Masaki.
First observations of Polar Mesospheric Echoes at both 31MHz and 53.5MHz over Svalbard (78.2°N 15.1°E). Experimental Results 2020 ;Volum 1.(E44)
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6 Hall, Chris; Johnsen, Magnar Gullikstad.
Influence of Geomagnetic Activity on Derivation of Temperatures From Meteor Wind Radars. Radio Science 2020 ;Volum 55.(11)
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7 Hall, Chris; Johnsen, Magnar Gullikstad.
On the relation between ionospheric parameters and sunspot number. Experimental Results 2020
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8 Hall, Chris; Tsutsumi, Masaki.
Neutral temperatures at 90 km altitude over Svalbard (78°N 16°E), 2002-2019, derived from meteor radar observations. Polar Science 2020
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9 He, Maosheng; Yamazaki, Yosuke; Hoffmann, Peter; Hall, Chris; Tsutsumi, Masaki; Li, Guozhu; Chau, Jorge L..
Zonal Wave Number Diagnosis of Rossby Wave-Like Oscillations Using Paired Ground-Based Radars. Journal of Geophysical Research (JGR): Space Physics 2020 ;Volum 125.(12) s. 1-12
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10 Koloskov, Alexander V.; Nickolaenko, Alexander P.; Yampolsky, Yuri M.; Hall, Chris; Budanov, Oleg V..
Variations of global thunderstorm activity derived from the long-term Schumann resonance monitoring in the Antarctic and in the Arctic. Journal of Atmospheric and Solar-Terrestrial Physics 2020 ;Volum 201:105231. s. 1-11
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11 Ogawa, Yasunobu; Tanaka, Y.; Kadokura, Akira; Hosokawa, K.; Ebihara, Y.; Motoba, T.; Gustavsson, Björn Johan; Brändström, U.; Sato, Y.; Oyama, S.; Ozaki, M.; Raita, Tero; Sigernes, Fred; Nozawa, Satonori; Shiokawa, K.; Kosch, Mike; Kauristie, K.; Hall, Chris; Suzuki, S.; Miyoshi, Y.; Gerrard, A.; Miyaoka, H.; Fujii, R..
Development of low-cost multi-wavelength imager system for studies of aurora and airglow. Polar Science 2020 ;Volum 23. s. -
UiT UNIS Untitled
 
12 Pancheva, Dora; Mukhtarov, P; Hall, Chris; Meek, Chris; Tsutsumi, Masaki; Petadella, N; Nozawa, Satonori.
Climatology of the Main (24-h and 12-h) Tides Observed by Meteor Radars at Svalbard and Tromsø: Comparison with the Models CMAM-DAS and WACCMX. Journal of Atmospheric and Solar-Terrestrial Physics 2020
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13 Petadella, Nick; Liu, H.-L.; Conte, J. F.; Chau, Jorge Luis; Hall, Chris; Jacobi, Christoph; Mitchell, Nick; Tsutsumi, Masaki.
Migrating Semidiurnal Tide during the September Equinox Transition in the Northern Hemisphere. Journal of Geophysical Research (JGR): Atmospheres 2020
UiT Untitled
 
14 Shepherd, Marianna; Meek, Christopher; Hocking, Wayne; Hall, Chris; Partamies, Noora; Sigernes, Fred; Manson, Alan; Ward, William.
Multi-instrument study of the mesosphere-lower thermosphere dynamics at 80ºN during the major SSW in January 2019. Journal of Atmospheric and Solar-Terrestrial Physics 2020 ;Volum 210. s. -
UiT UNIS Untitled
 
2019
15 Chau, Jorge L.; Urco, Miguel; Avsarkisov, Victor; Vierinen, Juha; Latteck, Ralph; Hall, Chris; Tsutsumi, Masaki.
Four dimensional quantification of Kelvin-Helmholtz instabilities in the polar summer mesosphere using volumetric radar imaging. Geophysical Research Letters 2019
UiT Untitled
 
16 Hall, Chris; Johnsen, Magnar Gullikstad.
Possible influence of variations in the geomagnetic field on migration paths of snow buntings. International Journal of Astrobiology 2019
UiT Untitled
 
17 Kozlovsky, A.; Shalimov, S; Oyama, S; Hosokawa, K.; Lester, M; Ogawa, Y; Hall, Chris.
Ground Echoes Observed by the Meteor Radar and High-Speed Auroral Observations in the Substorm Growth Phase. Journal of Geophysical Research (JGR): Space Physics 2019 s. 9278-9292
UiT Untitled
 
18 Mann, Ingrid; Moen, Jøran Idar; Blix, Kolbjørn; Fredriksen, Åshild; Graversen, Rune; Havnes, Ove; Hall, Chris.
MESOSPHERIC AND MIDDLE ATMOSPHERIC STUDIES IN NORWAY AND INTERNATIONAL COLLABORATION. 24th ESA Symposium on European Rocket and Balloon Programmes and Related Research; 2019-06-16 - 2019-06-20
UiO UiT Untitled
 
19 Paznukhov, A. V.; Yamploski, Y. M.; Koloskov, A. V.; Hall, Chris; Paznukhov, V. E.; Budanov, Oleg.
Correlation between airtemperature and thunderstorm activity in Africa according to the ELF measurements in Antarctica, Arctica and Ukraine. Radio Physics and Radio Astronomy (RPRA) 2019 ;Volum 24.(3)
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20 Yi, Wen; Xue, Xianghui; Reid, Iain; Murphy, Damian J.; Hall, Chris; Tsutsumi, Masaki; Ning, Baiqi; Li, Guozhu; Vincent, Robert; Chen, Jinsong; Wu, Jianfei; Chen, Tingdi; Dou, Xiankang.
Climatology of the mesopause relative density using a global distribution of meteor radars. Atmospheric Chemistry and Physics 2019 ;Volum 19. s. 7567-7581
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2018
21 He, Maosheng; Chau, Jorge Luis; Hall, Chris; Tsutsumi, Masaki; Meek, Chris; Hoffmann, Peter.
The 16-Day Planetary Wave Triggers the SW1-Tidal-Like Signatures During 2009 Sudden Stratospheric Warming. Geophysical Research Letters 2018 ;Volum 45.(22) s. 12,631-12,638
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22 Nozawa, Satonori; Kawabata, Tetsuya; Hosokawa, Keisuke; Ogawa, Yasunobu; Tsuda, Takuo; Mizuno, Akira; Fujii, Ryoichi; Hall, Chris.
A new five-wavelength photometer operated in Tromsø (69.6°N, 19.2°E). Earth Planets and Space 2018 ;Volum 70.(1)
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23 Yi, Wang; Reid, Iain; Xue, Xianghui; Murphy, Damian J.; Hall, Chris; Tsutsumi, Masaki; Ning, Baiqi; Li, Guozhu; Younger, Joel; Chen, Tingdi; Dou, Xiankang.
High and middle latitude neutral mesospheric density response to geomagnetic storms. Geophysical Research Letters 2018 ;Volum 45.(1) s. 436-444
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2017
24 Adachi, K; Nozawa, Satonori; Ogawa, Y; Brekke, Asgeir; Hall, Chris; Fujii, Ryochi.
Evaluation of a method to derive ionospheric conductivities using two auroral emissions (428 and 630 nm) measured with a photometer at Tromsø (69.6°N). Earth Planets and Space 2017 ;Volum 69:90. s. 1-19
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25 Bjoland, Lindis Merete; Ogawa, Y; Hall, Chris; Rietveld, Michael T; Løvhaug, Unni Pia; La Hoz, Cesar; Miyaoka, H.
Long-term variations and trends in the polar E-region. Journal of Atmospheric and Solar-Terrestrial Physics 2017 ;Volum 163. s. 85-90
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26 Chau, Jorge L.; Stober, Gunter; Hall, Chris; Tsutsumi, Masaki; Laskar, Fazlul I; Hoffmann, Peter.
Polar mesospheric horizontal divergence and relative vorticity measurements using multiple specular meteor radars. Radio Science 2017 ;Volum 52.(7) s. 811-828
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27 He, Maosheng; Chau, Jorge Luis; Stober, Gunter; Hall, Chris; Tsutsumi, Masaki; Hoffmann, Peter.
Application of Manley-Rowe Relation in Analyzing Nonlinear Interactions Between Planetary Waves and the Solar Semidiurnal Tide During 2009 Sudden Stratospheric Warming Event. Journal of Geophysical Research (JGR): Space Physics 2017 ;Volum 122.(10) s. 10783-10795
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28 Jakowski, Norbert; Hoque, M.; Meilich, J.; Hall, Chris.
Equivalent slab thickness of the ionosphere over Europe as an indicator of long-term temperature changes in the thermosphere. Journal of Atmospheric and Solar-Terrestrial Physics 2017 ;Volum 163. s. 91-102
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29 Laskar, Fazlul; Chau, J. L.; St.-Maurice, J.-P.; Stober, G.; Hall, Chris; Tsutsumi, Masaki; Höffner, J.; Hoffmann, P..
Experimental Evidence of Arctic Summer Mesospheric Upwelling and its Connection to Cold Summer Mesopause. Geophysical Research Letters 2017 ;Volum 44.(18) s. 9151-9158
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30 Takahashi, Toru; Hosokawa, Keisuke; Nozawa, Satonori; Tsuda, Takuo T.; Ogawa, Yasunobu; Tsutsumi, Masaki; Hiraki, Yasutaka; Fujiwara, Hitoshi; Kawahara, Takuya D.; Saito, Norihito; Wada, Satoshi; Kawabata, Tetsuya; Hall, Chris.
Depletion of mesospheric sodium during extended period of pulsating aurora. Journal of Geophysical Research (JGR): Space Physics 2017 ;Volum 122.(1) s. 1212-1220
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31 Themens, David R.; Jayacharandan, P. T.; Galkin, Ivan; Hall, Chris.
The Empirical Canadian High Arctic Ionospheric Model (E-CHAIM): NmF2 and hmF2. Journal of Geophysical Research (JGR): Space Physics 2017 ;Volum 122.(8) s. 9015-9031
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32 Vanselow, K. H.; Jacobsen, S; Hall, Chris; Garthe, Stefan.
Solar storms may trigger sperm whale strandings: explanation approaches for multiple strandings in the North Sea in 2016. International Journal of Astrobiology 2017 ;Volum 17.(4) s. 336-344
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2016
33 Hall, Chris.
Spectral characteristics of high-latitude raw 40 MHz cosmic noise signals. Nonlinear processes in geophysics 2016 ;Volum 23. s. 215-222
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34 Hall, Chris; Holmen, Silje Eriksen; Meek, Chris E.; Manson, Alan H.; Nozawa, Satonori.
Change in turbopause altitude at 52 and 70° N. Atmospheric Chemistry and Physics 2016 ;Volum 16.(4) s. 2299-2308
UiT UNIS Untitled
 
35 Holmen, Silje Eriksen; Hall, Chris; Tsutsumi, Masaki.
Neutral atmosphere temperature trends and variability at 90 km, 70°N, 19°E, 2003-2014. Atmospheric Chemistry and Physics 2016 ;Volum 16.(12) s. 7853-7866
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36 Laskar, Fazlul I; Chau, Jorge L.; Stober, Gunter; Hoffmann, Peter; Hall, Chris; Tsutsumi, M.
Quasi-biennial oscillation modulation of the middle- and high-latitude mesospheric semidiurnal tides during August–September. Journal of Geophysical Research (JGR): Biogeosciences 2016 ;Volum 121.(5) s. 4869-4879
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2015
37 Hall, Chris.
Spectral characteristics of high latitude raw 40MHz cosmic noise signals. nonlinear processes in geophysics discussions 2015 ;Volum 2. s. 969-987
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38 Holmen, Silje Eriksen; Hall, Chris; Tsutsumi, Masaki.
Neutral atmosphere temperature change at 90 km, 70N, 19E, 2003–2014. Atmospheric Chemistry and Physics (ACP) 2015 ;Volum 15. s. 15289-15317
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39 Takahashi, Toru; Nozawa, Satonaori; Tsuda, Takuo T.; Ogawa, Yasunobu; Saito, Norihito; Hidemori, Takehiro; Kawahara, Takuya D.; Hall, Chris; Fujiwara, Hitoshi; Matuura, Nobuo; Brekke, Asgeir; Tsutsumi, Masaki; Wada, Satoshi; Kawabata, Tetsuya; Oyama, Shinichiro; Fujii, Ryoichi.
A case study on generation mechanisms of a sporadic sodium layer above Tromsø (69.6° N) during a night of high auroral activity. Annales Geophysicae 2015 ;Volum 33.(8) s. 941-953
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40 Tsuda, Takuo T.; Nozawa, Satonori; Kawahara, Takuya D.; Kawabata, Tetsuya; Saito, Norihito; Wada, Satoshi; Hall, Chris; Tsutsumi, Masaki; Ogawa, Yujiro; Oyama, Shinichiro; Takahashi, Toru; Ejiri, Masaki; Nishiyama, Takanori; Nakamura, Takashi; Brekke, Asgeir.
A sporadic sodium layer event detected with five-directional lidar and simultaneous wind, electron density, and electric field observation at Tromsø, Norway. Geophysical Research Letters 2015 ;Volum 42.(21) s. 9190-9196
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2014
41 Hall, Chris.
Complexity signatures in the geomagnetic H-component recorded by the Tromsø magnetometer (70°N, 19°E) over the last quarter of a century. Nonlinear processes in geophysics 2014 ;Volum 21.(5) s. 1051-1058
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42 Hall, Christopher.
Complexity signatures for short timescales in the atmosphere above Adventdalen, Svalbard. Journal of Geophysical Research (JGR): Atmospheres 2014 ;Volum 119.(2) s. 652-662
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43 Nozawa, Satonori; Kawahara, Takuya D.; Saito, Norihito; Hall, Christopher; Tsuda, Takuo T.; Kawabata, Tetsuya; Wada, Satoshi; Brekke, Asgeir; Takahashi, Tomoaki; Fujiwara, Hitoshi; Ogawa, Yasunobu; Fujii, Ryochi.
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. Journal of Geophysical Research (JGR): Space Physics 2014 ;Volum 119.(1) s. 441-451
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44 Solhaug, randi merete; Nilsen, Tine; Fredriksen, Hege-Beate; Rypdal, Kristoffer; Hall, Chris.
Hvorfor skal vi stole på klimaforskerne?. Labyrint [Fagblad] 2014-10-01
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45 Takahashi, Toru; Nozawa, Satonori; Tsutsumi, Masaki; Hall, Chris; Suzuki, Shin; Tsuda, Takuo T.; Kawahara, Takuya D.; Saito, Norihito; Oyama, Shinichiro; Wada, Satoshi; Kawabata, Tetsuya; Fujiwara, Hitoshi; Brekke, Asgeir; Manson, Alan; Meek, Chris; Fujii, Ryoichi.
A case study of gravity wave dissipation in the polar MLT region using sodium LIDAR and radar data. Annales Geophysicae 2014 ;Volum 32.(10) s. 1195-1205
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2013
46 Haaland, Stein; Mulligan, Frank J.; Hibbins, Robert; Foerster, Matthias; Hall, Chris; Kleinknecht, Nora.
On the electromagnetic forcing of atmospheric neutral winds. AGU Fall 2013; 2013-12-09 - 2013-12-13
NTNU UiB UiT Untitled
 
47 Haaland, Stein; Mulligan, Frank J.; Hibbins, Robert; Foerster, Matthias; Hall, Chris; Kleinknecht, Nora.
On the electromagnetic forcing of the thermospheric neutral wind. Cluster Tromsoe 2013; 2013-09-16 - 2013-09-20
NTNU UiB UiT Untitled
 
48 Hall, Christopher.
The radar tropopause above Svalbard 2008-2012: Characteristics at various timescales. Journal of Geophysical Research (JGR): Atmospheres 2013 ;Volum 118.(6) s. 2600-2608
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49 Hall, Christopher.
The radar tropopause at 78°N, 16°E: characteristics of diurnal variation. Journal of Geophysical Research (JGR): Atmospheres 2013 ;Volum 118.(12) s. 6354-6359
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50 Hall, Christopher; Tsutsumi, Masaki.
Changes in mesospheric dynamics at 78°N, 16°E and 70°N, 19°E: 2001-2012. Journal of Geophysical Research (JGR): Atmospheres 2013 ;Volum 118.(7) s. 2689-2701
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