Results 51 to 60 of about 187,706 (222)

Ionospheric F‐Layer Scintillation Variabilities Over the American Sector During Sudden Stratospheric Warming Events

Space Weather, 2021
The present study investigates the ionospheric F‐layer scintillation responses in the American sector (90°W–0°, ±50° dip latitude) during the Northern Hemisphere winter sudden stratospheric warming events of 2007–2008, 2008–2009, 2009–2010, and 2012–2013.
Hailun Ye, Xianghui Xue, Tao Yu, Yang‐Yi Sun, Wen Yi, Chi Long, Weifan Zhang, Xiankang Dou   +7 more
doaj   +1 more source

Thousand‐Kilometer‐Scale Wavelike Undulations in Ionospheric Plasma Bubble Lifetime and Development Over Wide Longitudes

Geophysical Research Letters, Volume 53, Issue 6, 28 March 2026.
Abstract The irregularities of ionospheric plasma bubbles (EPBs) sequentially generated over wide longitudes are expected to share similar lifetime under normal conditions. In this study, we report a special case where the EPB irregularity lifetime over wide longitudes showed a quasi‐wavelike undulation pattern with wavelength of ∼3,000 km, that is ...
Wenjie Sun, Yuichi Otsuka, Guozhu Li, Prayitno Abadi, Zequan Wang, Guofeng Dai, Lianhuan Hu, Biqiang Zhao, Jianfei Liu, Haiyong Xie, Xiukuan Zhao, Yi Li, Baiqi Ning, Atsuki Shinbori, Michi Nishioka, Septi Perwitasari   +15 more
wiley   +1 more source

Identification of ionospheric scintillation in the low-latitude African sector using a commercial CubeSat constellation

Journal of Space Weather and Space Climate
Radio occultation (RO) measurements performed by Global Navigation Satellite System (GNSS) receivers onboard low-earth orbit (LEO) satellites are commonly used for a variety of atmospheric applications, including ionospheric and space weather studies. We
Mohanty Shradha, Hoque M. Mainul, Angling Matthew J.   +2 more
doaj   +1 more source

Enhancing Low‐Latitude Ionospheric Irregularity Prediction With Generalized Linear Models

Space Weather, Volume 24, Issue 3, March 2026.
Abstract The ionosphere poses challenges for accurate forecasting due to its complexity and variability. Irregularities in the lower ionosphere are influenced by local time, season, geographic location, solar activity and space weather, complicating precise predictions.
Alysson Brhian, Marco A. Ridenti, Francisco Azpilicueta, Mauricio Gende, Marisa Roberto   +4 more
wiley   +1 more source

Amplitude scintillation detection with geodetic GNSS receivers leveraging machine learning decision tree

Satellite Navigation
The amplitude scintillation detection is typically achieved by using the scintillation index generated by dedicated and costly ionospheric scintillation monitoring receivers (ISMRs).
Wang Li, Yiping Jiang, Hongyuan Ji, Wenqiang Wei   +3 more
doaj   +1 more source

Strong Polar Ionospheric Electron Density Depletion Under Prolonged Northward IMF Bz Condition

Earth and Space Science, Volume 13, Issue 3, March 2026.
Abstract Previous studies have primarily focused on high‐latitude ionospheric‐thermospheric (I‐T) variabilities under southward interplanetary magnetic field (IMF) conditions, while rare studies have investigated the I‐T responses to due northward Bz (NBz), especially in the presence of strong IMF By conditions.
Tianyu Cao, Yifan Lu, Jing Liu, Shuhan Li   +3 more
wiley   +1 more source

Multi-Frequency Simulation of Ionospheric Scintillation Using a Phase-Screen Model

Navigation, 2022
A fast Monte Carlo technique to simulate equatorial ionospheric scintillation on global navigation satellite system signals is proposed. The algorithm uses a single-layer phase-screen model of the ionosphere and the scintillation is expressed as a ...
Fernando D. Nunes, Fernando M. G. Sousa, José M. V. Marçal   +2 more
doaj   +1 more source

Leveraging Geodetic GPS Receivers for Ionospheric Scintillation Science

Radio Science, 2020
We demonstrate scintillation analysis from a network of geodetic Global Positioning System (GPS) receivers which provide data at 1‐second resolution. We introduce proxy phase (σTEC) and amplitude (SNR4) scintillation indices and validate them against the
S. Mrak, J. Semeter, Y. Nishimura, F. Rodrigues, A. Coster, K. Groves   +5 more
semanticscholar   +1 more source

The Evolution of a Polar Cap Patch Into a Blob in the Nightside Ionosphere: Direct Observations of Multiple Blob Formation Mechanisms Acting Simultaneously on the Same Plasma

Journal of Geophysical Research: Space Physics, Volume 131, Issue 3, March 2026.
Abstract A polar cap patch was observed to exit the polar cap to become a blob as it entered the auroral oval on the nightside of the Earth under moderately quiet geomagnetic conditions (Kp = 3−). Auroral particle precipitation led to an increase in the electron density of the blob.
S. J. Maguire, A. G. Wood, D. R. Themens, E. M. Henley, S. E. Milan, Y. Soobiah, K. Oksavik, W. J. Miloch, J. C. Coxon, M. G. Johnsen   +9 more
wiley   +1 more source

The ionospheric scintillation phenomenon

, 2022
The SAGAIE network was deployed in West-Africa in 2013 to assess the feasibility of an equatorial for ASECNA SBAS by studying ionospheric scintillation. This study of the network’s measurements, taken between 2013 and 2016, analyzes the characteristics of the scintillation recorded by five receivers that cover Sub-Saharan West-Africa.
Galmiche, Aurelien, Trilles, Sébastien, Rougerie, Sébastien, Fabbro, Vincent, Féral, Laurent, Lapie, Julie, Bakienon, Louis   +6 more
openaire   +1 more source