Search Results

Dynamics of the polar cap boundary and the auroral oval in the nightside ionosphere

by Pitkänen, T. (Timo)
Published 2011

Multi-instrument and modelling studies of the ionospheres at Earth and Mars

by Grandin, M. (Maxime)
Published 2018

Multi-purpose methods for ionospheric radar measurements

by Virtanen, I. (Ilkka)
Published 2009

Development of low-cost multi-wavelength imager system for studies of aurora and airglow

by Ogawa, Y. (Y.), Tanaka, Y. (Y.), Kadokura, A. (A.), Hosokawa, K. (K.), Ebihara, Y. (Y.), Motoba, T. (T.), Gustavsson, B. (B.), Brändström, U. (U.), Sato, Y. (Y.), Oyama, S. (S.), Ozaki, M. (M.), Raita, T. (T.), Sigernes, F. (F.), Nozawa, S. (S.), Shiokawa, K. (K.), Kosch, M. (M.), Kauristie, K. (K.), Hall, C. (C.), Suzuki, S. (S.), Miyoshi, Y. (Y.), Gerrard, A. (A.), Miyaoka, H. (H.), Fujii, R. (R.)
Published 2020

New incoherent scatter radar measurement techniques and data analysis methods

by Damtie, B. (Baylie)
Published 2004

Auroral molecular-emission effects on the atomic oxygen line at 777.4 nm

by Oyama, S.-i. (Shin-ichiro), Tsuda, T. T. (Takuo T.), Hosokawa, K. (Keisuke), Ogawa, Y. (Yasunobu), Miyoshi, Y. (Yoshizumi), Kurita, S. (Satoshi), Kero, A. E. (Antti E.), Fujii, R. (Ryoichi), Tanaka, Y. (Yoshimasa), Mizuno, A. (Akira), Kawabata, T. (Tetsuya), Gustavsson, B. (Björn), Leyser, T. (Thomas)
Published 2018

Multievent analysis of oscillatory motion of medium-scale traveling ionospheric disturbances observed by a 630-nm airglow imager over Tromsø

by Yadav, S. (Sneha), Shiokawa, K. (K.), Oyama, S. (S.), Otsuka, Y. (Y.)
Published 2020

IMF dependence of midnight bifurcation in the thermospheric wind at an auroral latitude based on nine winter measurements in Tromsø, Norway

by Oyama, S. (S.), Hosokawa, K. (K.), Vanhamäki, H. (H.), Aikio, A. (A.), Sakanoi, T. (T.), Cai, L. (L.), Virtanen, I. I. (I. I.), Shiokawa, K. (K.), Nishitani, N. (N.), Shinbori, A. (A.), Ogawa, Y. (Y.)
Published 2023

The effect of ozone shadowing on the D region ionosphere during sunrise

by Macotela, E. L. (Edith L.), Clilverd, M. A. (Mark A.), Manninen, J. (Jyrki), Thomson, N. R. (Neil R.), Newnham, D. A. (David A.), Raita, T. (Tero)
Published 2019

Swarm satellite and EISCAT radar observations of a plasma flow channel in the auroral oval near magnetic midnight

by Aikio, A. T. (A. T.), Vanhamäki, H. (H.), Workayehu, A. B. (A. B.), Virtanen, I. I. (I. I.), Kauristie, K. (K.), Juusola, L. (L.), Buchert, S. (S.), Knudsen, D. (D.)
Published 2018

Ionospheric D-region studies by means of active heating experiments and modelling

by Kero, A. (Antti)
Published 2008

Estimation of the emission altitude of pulsating aurora using the five-wavelength photometer

by Kawamura, Y. (Yuki), Hosokawa, K. (Keisuke), Nozawa, S. (Satonori), Ogawa, Y. (Yasunobu), Kawabata, T. (Tetsuya), Oyama, S.-I. (Shin-Ichiro), Miyoshi, Y. (Yoshizumi), Kurita, S. (Satoshi), Fujii, R. (Ryoichi)
Published 2020

Energetic electron precipitation and auroral morphology at the substorm recovery phase

by Oyama, S. (S.), Kero, A. (A.), Rodger, C. J. (C. J.), Clilverd, M. A. (M. A.), Miyoshi, Y. (Y.), Partamies, N. (N.), Turunen, E. (E.), Raita, T. (T.), Verronen, P. T. (P. T.), Saito, S. (S.)
Published 2017

Geomagnetic activity dependence and dawn-dusk asymmetry of thermospheric winds from 9-year measurements with a Fabry–Perot interferometer in Tromsø, Norway

by Oyama, S.-i. (Shin-ichiro), Aikio, A. (Anita), Sakanoi, T. (Takeshi), Hosokawa, K. (Keisuke), Vanhamäki, H. (Heikki), Cai, L. (Lei), Virtanen, I. (Ilkka), Pedersen, M. (Marcus), Shiokawa, K. (Kazuo), Shinbori, A. (Atsuki), Nishitani, N. (Nozomu), Ogawa, Y. (Yasunobu)
Published 2023

Gaussian Markov random field priors in ionospheric 3-D multi-instrument tomography

by Norberg, J. (Johannes), Vierinen, J. (Juha), Roininen, L. (Lassi), Orispää, M. (Mikko), Kauristie, K. (Kirsti), Rideout, W. C. (William C.), Coster, A. J. (Anthea J.), Lehtinen, M. S. (Markku S.)
Published 2018

A case study of correspondence between Pc1 activity and ionospheric irregularities at polar latitudes

by Francia, P. (P.), Regi, M. (M.), De Lauretis, M. (M.), Pezzopane, M. (M.), Cesaroni, C. (C.), Spogli, L. (L.), Raita, T. (T.)
Published 2020

Radar—CubeSat transionospheric HF propagation observations:Suomi 100 satellite and EISCAT HF facility

by Kallio, E. (Esa), Kero, A. (Antti), Harri, A.-M. (Ari-Matti), Kestilä, A. (Antti), Aikio, A. (Anita), Fontell, M. (Mathias), Jarvinen, R. (Riku), Kauristie, K. (Kirsti), Knuuttila, O. (Olli), Koskimaa, P. (Petri), Loyala, J. (Jauaries), Lukkari, J.-M. (Juha-Matti), Modabberian, A. (Amin), Niittyniemi, J. (Joonas), Rynö, J. (Jouni), Vanhamäki, H. (Heikki), Varberg, E. (Erik)
Published 2022

A-CHAIM:Near-Real-Time data assimilation of the high latitude ionosphere with a particle filter

by Reid, B. (Ben), Themens, D. R. (David R.), McCaffrey, A. (Anthony), Jayachandran, P. T. (P. T.), Johnsen, M. G. (Magnar G.), Ulich, T. (Thomas)
Published 2023

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 precipitatin...

by Miyamoto, T. (Taishiro), Oyama, S.-i. (Shin-ichiro), Raita, T. (Tero), Hosokawa, K. (Keisuke), Miyoshi, Y. (Yoshizumi), Ogawa, Y. (Yasunobu), Kurita, S. (Satoshi)
Published 2021

Even moderate geomagnetic pulsations can cause fluctuations of foF2 frequency of the auroral ionosphere

by Yagova, N. (Nadezda), Kozlovsky, A. (Alexander), Fedorov, E. (Evgeny), Kozyreva, O. (Olga)
Published 2021