Results 21 to 30 of about 178 (93)

Climatology of Nighttime Upper Thermospheric Winds From Fabry-Perot Interferometer 2011-2019 Measurements Over Kelan (38.7 degrees N, 111.6 degrees E), China: Local Time, Seasonal, Solar Cycle, and Geomagnetic Activity Dependence

, 2020
For the first time, we develop a local time and day of year dependent climatological model in different geomagnetic activity based on 630.0 nm Fabry‐Perot Interferometer (FPI) measurements over Kelan (38.7°N, 111.6°E) during 2011–2019.
Yao, X., Yuyan Jin, Cong Huang, Zhao, B., Jin, Y., Huang, C., Weixing Wan, Biqiang Zhao, Wan, W., Yang, C., Xin Yao, Changjun Yang   +11 more
core   +1 more source

Ionosphere/Thermosphere Dynamics Obtained from COSMIC Satellite Observations [PDF]

, 2022
The morphology and climatology of thermospheric neutral winds play an important role in ionospheric and thermospheric dynamics. Thermospheric neutral winds effect temporal and spatial variations of ionospheric plasma which plays an important role F ...
Pedersen, Layne, Scherliess, Ludger
core   +1 more source

Research on Kalman Filter Assimilation Technology for Wind Field Information from Qujing Meteor Radar

Remote Sensing
All-sky meteor radars are widely employed to observe the near-space atmospheric wind field, a crucial parameter of the near-space environment. Owing to the spatiotemporal uncertainty in meteor count distribution, meteor radars may encounter measurement ...
Xingxin Sun, Chunhua Jiang, Jian Feng, Yi Liu, Yewen Wu, Tong Xu, Jiandong Qiao, Zhongxin Deng, Chen Zhou, Yuqiang Zhang   +9 more
doaj   +1 more source

Spatial Distributions of Nitric Oxide in the Antarctic Wintertime Middle Atmosphere During Geomagnetic Storms [PDF]

, 2020
Energetic electron precipitation leads to increased nitric oxide (NO) production in the mesosphere and lower thermosphere. NO distributions in the wintertime, high‐latitude Southern Hemisphere atmosphere during geomagnetic storms are investigated.
D. R. Marsh, Clilverd, MA, Newnham, DA, Marsh, DR, Rodger, C.J., M. A. Clilverd, D. A. Newnham, Newnham, D.A., M. E. Hervig, Hervig, ME, Marsh, D.R., Hervig, M.E., Rodger, CJ, C. J. Rodger, Clilverd, M.A.   +14 more
core   +1 more source

Modeling Storm‐Time Post‐Midnight Equatorial Plasma Bubbles With SAMI3‐WACCMX: Impacts of Neutral Winds, Thermospheric Composition, and Atmospheric Waves

Geophysical Research Letters, Volume 53, Issue 18, 28 September 2026.
Abstract This study investigates the roles of neutral winds, composition and atmospheric waves in storm‐time post‐midnight equatorial plasma bubble (EPB) development using the coupled SAMI3‐WACCMX model. Simulations reveal the formation of post‐midnight EPBs extending beyond 1,500 km in altitude and persisting into the post‐sunrise period.
Min‐Yang Chou, J. D. Huba, Jack Wang, Jia Yue, Maksym Petrenko   +4 more
wiley   +1 more source

Connections Between Stratospheric GWs, the Polar Vortex, and MSTIDs From Longitudinally Distinct Regions During Nine Arctic Winters

Journal of Geophysical Research: Space Physics, Volume 131, Issue 9, September 2026.
Abstract Midlatitude medium‐scale traveling ionospheric disturbances (MSTIDs) are a common source of ionospheric variability that may influence GNSS‐based positioning and can disrupt HF‐communication channels. Here, we present a comprehensive nine‐winter analysis (2014–2023) that establishes a robust connection between stratospheric gravity waves (GWs)
S. Derghazarian, L. Goncharenko, V. L. Harvey, S.‐R. Zhang, A. Coster, E. Becker, G. Kwon   +6 more
wiley   +1 more source

Estimating Surface Explosion Yield From Single‐Channel Infrasound Signals at Regional Distances With Random‐Forest Regression

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 14, 28 July 2026.
Abstract When detonated on the Earth's surface, large explosions emit distinctive acoustic signatures that propagate over vast distances with relatively low attenuation in the form of infrasound. Infrasound stations hundreds of kilometers from the impulsive source can record the propagated pressure signal, atmospheric conditions permitting.
S. Awender, D. Fee, A. Witsil
wiley   +1 more source

SAMI3 data in netCDF format (2019-Apr-16)

, 2023
SAMI3 (Sami3 is Also a Model of the Ionosphere) is a seamless, three-dimensional, physics-based model of the ionosphere (Huba et al, 2008). It is based on SAMI2, a two-dimensional model of the ionosphere (Huba et al., 2000).
Huba, Joseph, Chartier, Alex T., Steele, Josh   +2 more
core   +1 more source

Observation of Latitudinal Asymmetric Ionospheric Disturbances Induced by Typhoon YAGI (2024) Using the BeiDou GEO Satellite

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Typhoons, as intense atmospheric disturbances, are capable of significantly influencing ionospheric conditions, primarily through the excitation of gravity waves, which transfer energy into the ionosphere.
Jintao Wang, Jun Tang, Yue Sun, Liang Zhang, Wenfei Mao   +4 more
doaj   +1 more source

Space Weather Effects From Moderate to Severe Geomagnetic Storms in October 2024 Over the Latin American Sector

Space Weather, Volume 24, Issue 6, June 2026.
Abstract This study presents a detailed case study of the ionospheric impacts of moderate (G2) and severe (G4) geomagnetic storms over the Latin American sector, with particular emphasis on the formation and suppression of equatorial plasma bubbles (EPBs).
C. S. Carmo, L. Dai, C. M. Wrasse, D. Barros, H. Takahashi, J. R. Costa, L. F. R. Vital, P. R. Jauer, C. De La Jara, A. J. Carrasco, C. A. O. B. Figueiredo, C. Wang, H. Li, Z. Liu   +13 more
wiley   +1 more source