Results 1 to 10 of about 86,535 (196)

Ground-Based GNSS and Satellite Observations of Auroral Ionospheric Irregularities during Geomagnetic Disturbances in August 2018 [PDF]

Sensors, 2021
The 25–26 August 2018 space weather event occurred during the solar minimum period and surprisingly became the third largest geomagnetic storm of the entire 24th solar cycle.
Irina Zakharenkova, Iurii Cherniak, Andrzej Krankowski   +2 more
doaj   +2 more sources

Characterization of multi-scale ionospheric irregularities using ground-based and space-based GNSS observations

Satellite Navigation, 2021
Ionospheric irregularities can adversely affect the performance of Global Navigation Satellite System (GNSS). However, this opens the possibility of using GNSS as an effective ionospheric remote sensing tool.
Yuxiang Peng, Michael Hartinger, Zhonghua Xu   +2 more
exaly   +2 more sources

Investigation of the Occurrence of Nighttime Topside Ionospheric Irregularities in Low-Latitude and Equatorial Regions Using CYGNSS Satellites [PDF]

Sensors, 2020
By using multi-satellite observations of the L1 signal-to-noise ratio (SNR) from the Cyclone Global Navigation Satellite System (CYGNSS) taken in 2017, we present the occurrence of nighttime topside ionospheric irregularities in low-latitude and ...
Liang Huang, Yi Liu, Qiong Tang, Guanyi Chen, Zhuangkai Wang, Chen Zhou   +5 more
doaj   +2 more sources

Global investigation of the ionospheric irregularities during the severe geomagnetic storm on September 7–8, 2017

Geodesy and Geodynamics, 2020
In this study, the global effects of the severe geomagnetic storm on the Earth's ionosphere on September 5–9, 2017 with Coronal Mass Ejections (CMEs) associated with X-9.3 flares on September 6, 2017 were investigated by the Rate of Total Electron ...
Ramazan Atici
exaly   +3 more sources

IGS ROTI Maps: Current Status and Its Extension towards Equatorial Region and Southern Hemisphere [PDF]

Sensors, 2022
The International GNSS Service (IGS) diurnal ROTI maps ionospheric product was developed to characterize ionospheric irregularities occurrence over the Northern hemisphere and has been available for the community since 2014.
Iurii Cherniak, Irina Zakharenkova, Andrzej Krankowski   +2 more
doaj   +2 more sources

Analysis of the Ionospheric Irregularities and Phase Scintillation at Low and Middle Latitudes Based on Swarm Observations

Remote Sensing, 2022
This study presents a statistical analysis of the ionospheric irregularities and topside ionospheric scintillation at low and middle latitudes by using in situ electron density and upward-looking total electron content data measured by the Swarm ...
Jiahao Zhong, Xin Wan, Jiawei Kuai
exaly   +3 more sources

Nighttime ionospheric irregularity during intense geomagnetic storm events over the Europe-African longitudinal sector [PDF]

Heliyon
Radio communication and navigation systems can be severely impacted by irregularities in the ionosphere. There is still much to learn about how geomagnetic storms affect the occurrence of these irregularities.
Yibekal Kassa, Ambelu Tebabal, Baylie Damtie   +2 more
doaj   +2 more sources

Relationship between geomagnetic storms and occurrence of ionospheric irregularities in the west sector of Africa during the peak of the 24th solar cycle

Frontiers in Astronomy and Space Sciences, 2022
The study of ionospheric irregularities is important since many technological systems might be influenced by the ionosphere. In this work, we use data from the Global Navigation Satellite Systems (GNSS) receiver installed in Abuja, Nigeria, GPS ...
George Ochieng Ondede, George Ochieng Ondede, A. B. Rabiu, A. B. Rabiu, Daniel Okoh, Daniel Okoh, Paul Baki, Joseph Olwendo, Kazuo Shiokawa, Yuichi Otsuka   +9 more
doaj   +1 more source

The Relationship Between Upward Propagating Atmospheric Gravity Waves and Ionospheric Irregularities During Solar Minimum Periods

Space Weather, 2021
We present a study on the relationship between upward propagating gravity waves and ionospheric irregularities. Gravity waves (GWs) are identified from Thermosphere Ionosphere Mesosphere Energetics and Dynamics (TIMED) satellite temperature measurements ...
Ephrem B. Seba, Melessew Nigussie, Nigussie M. Giday, Mark B. Moldwin   +3 more
doaj   +1 more source

Leveraging the CYGNSS Spaceborne GNSS‐R Observations to Detect Ionospheric Irregularities Over the Oceans: Method and Verification

Space Weather, 2022
The Global Navigation Satellite System (GNSS) has significantly facilitated the detection of ionospheric irregularities. Nevertheless, the ground‐based GNSS stations are inhomogeneously distributed around the world with large gaps, especially in the vast
Xiaodong Ren, Hang Liu, Dengkui Mei, Pengxin Yang, Zhiyu Zhang, Mohamed Freeshah, Xiaohong Zhang   +6 more
doaj   +1 more source