Results 41 to 50 of about 47,066 (211)

The Multifractal Structure of Small-Scale Artificial Ionospheric Turbulence

Open Astronomy, 2013
We present the results of investigation of a multifractal structure of the artificial ionospheric turbulence when the midlatitude ionosphere is affected by high-power radio waves.
Vybornov F. I., Rakhlin A. V.
doaj   +1 more source

Tidal Variability in the Lower Thermosphere: Relative Importance of ENSO, QBO, PJO, MJO, and Lyα

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 20, 28 October 2026.
Abstract Atmospheric tides in the lower thermosphere play an important role in regulating upper‐atmospheric conditions relevant to space weather. However, their spatial and temporal variability remains poorly understood, apart from seasonal variations. Previous studies have shown that tides can be influenced by meteorological and solar conditions. This
Yosuke Yamazaki, Huixin Liu, Kaoru Sato, Dai Koshin, Claudia Stolle   +4 more
wiley   +1 more source

Comparison of IRI-Plas STEC and IONOLAB-STEC Over a Midlatitude GPS Network

, 2019
Total Electron Content (TEC) is an important parameter of the ionosphere used to investigate and determine the ionospheric variability. Slant Total Electron Content (STEC) is the total number of electrons between the receiver-satellite link ...
Feza Arikan, Tamara Gulyaeva, Gulyaeva, Tamara, Sinem Deniz Yenen, Yenen, Sinem Deniz, ARIKAN, FEZA   +5 more
core   +2 more sources

Dynamic Evolution of a Storm‐Time “Super‐EPB” Event Over China on the Magnetically Disturbed Night of 01 December 2023

Space Weather, Volume 24, Issue 10, October 2026.
Abstract This paper investigates the dynamic evolution of a storm‐time “Super‐EPB” event over China on 1 December 2023 (Kp ≤ 7, SYM/H ≥ −130 nT) using multi‐instrument observations. Occurring near sunset as the IMF‐Bz abruptly turned southward, with auroral extension to midlatitudes, the “Super‐EPB” extended to 40°N with an apex height of ∼2,460 km ...
Longchang Sun, Jiyao Xu, Wei Yuan, Yajun Zhu, Maosheng He, Wenjie Sun, Guozhu Li, Jiaojiao Zhang, Hong Gao, Aibin Zhang, Weijun Liu, Guojun Wang   +11 more
wiley   +1 more source

Impact of Two Radio Occultation Constellations on Numerical Weather Prediction: Polar‐Orbits Only and Mixed Polar‐Equatorial Orbits

Earth and Space Science, Volume 13, Issue 10, October 2026.
Abstract This study explores the relative impact of two orbital configurations for Global Navigation Satellite System radio occultation (RO) observations in numerical weather prediction using observing system simulation experiments (OSSE). Three experiments are carried out: a Control experiment with no RO observations and two experiments with 14,000 RO
Nikki C. Privé, Christopher Barsoum, Douglas Hunt, Michael J. Murphy, Richard Anthes, William Gullotta, Natalie Laudier   +6 more
wiley   +1 more source

Nonlinear evolution of the temperature gradient instability in the midlatitude ionosphere [PDF]

Journal of Geophysical Research: Space Physics, 2014
AbstractThe midlatitude Super Dual Auroral Radar Network radars frequently observe quiet time decameter‐scale irregularities in the nightside subauroral ionosphere. Since opposed temperature and density gradients are a persistent feature in the vicinity of the ionospheric projection of the plasmapause, the temperature gradient instability (TGI) is ...
A. Eltrass, W. A. Scales
openaire   +1 more source

Coupled Thermosphere–Ionosphere Dynamics During the 17 January 2013 Storm: GITM–TIDAS Comparison With Millstone Hill ISR Measurements

Journal of Geophysical Research: Space Physics, Volume 131, Issue 10, October 2026.
Abstract This article analyzes a weak geomagnetic storm on January 17–18, 2013, using a first‐principles model (Global Ionosphere Thermosphere Model (GITM) with an empirical assimilative ionospheric model (TIDAS), evaluated against observations in the form of Millstone Hill (MH) incoherent scatter radar (ISR) altitude profiles and global navigation ...
Onyinye Nwankwo‐Omoloja, Aaron J. Ridley, Shun‐Rong Zhang, Philip J. Erickson   +3 more
wiley   +1 more source

Strong Longitudinal and Latitudinal Differences of Ionospheric Responses in North American and European Sectors During the 10–11 October 2024 Geomagnetic Storm

Remote Sensing
This study examines the spatiotemporal evolution of midlatitude ionospheric disturbances during the intense geomagnetic storm on 10–11 October 2024, focusing on the North American and European sectors.
Xinyue Luo, Ercha Aa, Xin Wang, Bingxian Luo   +3 more
doaj   +1 more source

50 MHz continuous wave interferometer observations of the unstable mid-latitude E-region ionosphere [PDF]

Annales Geophysicae, 2003
In this paper we describe the conversion of SESCAT (Sporadic-E SCATter experiment), a bistatic 50 MHz continuous wave (CW) Doppler radar located on the island of Crete, Greece, to a single (east-west) baseline interferometer. The first results show
C. Haldoupis, A. Bourdillon, A. Kamburelis, G. C. Hussey, J. A. Koehler   +4 more
doaj   +1 more source

Coupled Thermosphere–Ionosphere–Plasmasphere Disturbances During the April 2023 Geomagnetic Storm: A Ground‐Based Multiparametric Study Across the American and European Sectors

Journal of Geophysical Research: Space Physics, Volume 131, Issue 10, October 2026.
Abstract The April 2023 geomagnetic storm significantly impacted the thermosphere‐ionosphere system, particularly over South America and midlatitude regions. This study analyzes ground‐based geomagnetic and ionospheric data, alongside Swarm satellite measurements, to investigate the physical mechanisms driven by intense solar wind energy input ...
L. Perrone, M. Regi, G. Carnevale, C. Scotto, D. Sabbagh, A. Ippolito, A. Del Corpo, D. Sciarra, B. Heilig   +8 more
wiley   +1 more source