Survey of cold ionospheric outflows in the magnetotail by E. Engwall, E. Engwall, A. I. Eriksson, C. M. Cully, M. André, P. A. Puhl-Quinn, H. Vaith, R. Torbert

“…Low-energy ions escape from the ionosphere and constitute a large part of the magnetospheric content, especially in the geomagnetic tail lobes. …”
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Chinese ionospheric investigations in 2016–2017 by LiBo Liu, WeiXing Wan

Subjects: “…ionosphere; ionospheric storm; space weather; ionospheric dynamics; irregularity…”
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Sixty years of ionospheric measurements and studies* by K. Bibl, K. Bibl

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Modelling the light-ion densities in the ionosphere by S. M. Stankov

“…A steady-state theoretical model is used to obtain variations of the H+/O+ and He+/O+ density ratios in the upper ionosphere at middle latitudes. The model results are compared with the existing data from satellite measurements. …”
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Radio occultation techniques for probing the ionosphere by M. Angling, R. Leitinger, N. Jakowski

“…No other profiling technique such as vertical sounding or incoherent scatter, unifies vertical profiling through the entire ionosphere with global coverage. Inversion methods are described both for vertical profiling as well as for tree dimensional electron density reconstructions of the ionosphere. …”
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Climatology of ionosphericF-region disturbances by B. Zolesi, V. Romano, S. S. Kouris, D. N. Fotiadis

Subjects: “…ionosphere…”
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Ionospheric perturbations and Schumann resonance data, by Nelson, Philip Hayes

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Ionospheric Backscatter Observations at Millstone Hill by Evans, J. V.

“…Evidence is presented of ionospheric heating during magnetically disturbed conditions, but it is shown that this is only of great importance at night.…”
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GNSS signal propagation through ionosphere by Lo, Wai Cho

“…In equatorial/low-attitude areas, ionospheric scintillation is a significant cause of VHF/UHF signal degradation. …”
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GNSS ionospheric scintillation studies in Singapore by Dhimas Sentanu Murti

“…Ionosphere in around equatorial region is known to have unique characteristic. …”
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GNSS signal propagation through ionosphere by Lee, Xian Ying

“…Firstly, the cause of ionospheric scintillation and the theoretical reasoning behind the well-known diurnal, seasonal and solar activity trends of amplitude scintillation in equatorial/low-latitude regions were presented. …”
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Evaluation of Ionospheric Delay for Moon-Based Repeat-Pass InSAR Based on International Reference Ionosphere Model by Kai Wu, Huadong Guo, Guang Liu, Wenjin Wu, Yixing Ding, Guoqiang Chen

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Assessment of Polar Ionospheric Observations by VIPIR/Dynasonde at Jang Bogo Station, Antarctica: Part 1—Ionospheric Densities by Eunsol Kim, Geonhwa Jee, Young-Bae Ham, Nikolay Zabotin, Changsup Lee, Hyuck-Jin Kwon, Junseok Hong, Jeong-Han Kim, Terence Bullett

Subjects: “…polar ionosphere…”
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Seismogenic Field in the Ionosphere before Two Powerful Earthquakes: Possible Magnitude and Observed Ionospheric Effects (Case Study) by Valery Hegai, Zhima Zeren, Sergey Pulinets

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Ionospheric storms at geophysically-equivalent sites – Part 2: Local time storm patterns for sub-auroral ionospheres by M. Mendillo, C. Narvaez

“…The response of the mid-latitude ionosphere to geomagnetic storms depends upon several pre-storm conditions, the dominant ones being season and local time of the storm commencement (SC). …”
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On the Electron Temperature in the Topside Ionosphere as Seen by Swarm Satellites, Incoherent Scatter Radars, and the International Reference Ionosphere Model by Alessio Pignalberi, Fabio Giannattasio, Vladimir Truhlik, Igino Coco, Michael Pezzopane, Giuseppe Consolini, Paola De Michelis, Roberta Tozzi

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Ionospheric storms at geophysically-equivalent sites – Part 1: Storm-time patterns for sub-auroral ionospheres by M. Mendillo, C. Narvaez

“…The systematic study of ionospheric storms has been conducted primarily with groundbased data from the Northern Hemisphere. …”
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Ionospheric response to magnetar flare: signature of SGR J1550–5418 on coherent ionospheric Doppler radar by A. Mahrous

“…These ionospheric perturbations are observed in the relative change of the total electron content (ΔTEC/Δ<i>t</i>) measurements from the coherent ionospheric Doppler radar (CIDR). …”
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Ionospheric perturbations initiated due to the forest-fire over Greece as a consequence of lithosphere-atmosphere-ionosphere coupling by S. Priyadarshi, J. Yang, M. Werner, M. Kryza

Subjects: “…ionospheric perturbations…”
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Investigations of Atmospheric Waves in the Earth Lower Ionosphere by Means of the Method of the Creation of the Artificial Periodic Irregularities of the Ionospheric Plasma by Nataliya V. Bakhmetieva, Gennady I. Grigoriev, Ariadna V. Tolmacheva, Ilia N. Zhemyakov

“…We present results of the studies of internal gravity waves based on altitude-time dependences of the temperature and the density of the neutral component and the velocity of the vertical plasma motion at altitudes of the lower ionosphere (60&#8722;130 km). The vertical plasma velocity, which in the specified altitude range is equal to the velocity of the neutral component, the temperature, and the density of the neutral atmosphere are determined by the method of the resonant scattering of radio waves by artificial periodic irregularities (APIs) of the ionosphere plasma. …”
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