Results 71 to 80 of about 8,248 (257)

GOLD Observations of the Thermospheric Response to the 10–12 May 2024 Gannon Superstorm

Geophysical Research Letters
After days of intense solar activity, active region AR3664 launched seven CMEs toward Earth producing an extreme G5 geomagnetic storm commencing at 17:05 UT on 10 May 2024.
J. S. Evans, J. Correira, J. D. Lumpe, R. W. Eastes, Q. Gan, F. I. Laskar, S. Aryal, W. Wang, A. G. Burns, S. Beland, X. Cai, M. Codrescu, S. England, K. Greer, A. Krywonos, W. E. McClintock, T. Plummer, V. Veibell   +17 more
doaj   +1 more source

IMF Dependence of Midnight Bifurcation in the Thermospheric Wind at an Auroral Latitude Based on Nine Winter Measurements in Tromsø, Norway

Geophysical Research Letters, 2023
A thermospheric wind data set from a Fabry‐Perot interferometer (630 nm) and the ion velocity from a Dynasonde in Tromsø, Norway, was analyzed for nine winter seasons to study the dynamics of the thermosphere and F‐region ionosphere at an auroral ...
S. Oyama, K. Hosokawa, H. Vanhamäki, A. Aikio, T. Sakanoi, L. Cai, I. I. Virtanen, K. Shiokawa, N. Nishitani, A. Shinbori, Y. Ogawa   +10 more
doaj   +1 more source

thermosphere

, 2014
Citation: 'thermosphere' in the IUPAC Compendium of Chemical Terminology, 3rd ed.; International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. 10.1351/goldbook.T06338 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms.
openaire   +1 more source

Nitric Oxide Intensification Associated With STEVE: TIMED/SABER‐REGO Observations and Comparison With GITM Simulation

AGU Advances, Volume 7, Issue 3, June 2026.
Abstract Strong Thermal Emission Velocity Enhancement (STEVE) is a nightsky optical phenomenon of great research interest in recent years. STEVE is recognized to be co‐located with a latitudinally narrow channel of fast westward ion drifts, also known as “subauroral ion drifts” (SAID).
Jun Liang, C. Sheng, B. Kunduri, B. J. Harding, M. Mlynczak, E. Donovan, E. Spanswick, D. M. Gillies   +7 more
wiley   +1 more source

Thermosphere UFKW Structures and Ionosphere Coupling as Observed by ICON

Geophysical Research Letters
Two ∼2‐week Ultra‐Fast Kelvin Wave (UFKW) events centered on days 158(203) during 2021 are investigated using winds, temperatures, plasma drifts and electron densities (Ne) measured by the Ionospheric CONnections (ICON) mission.
Jeffrey M. Forbes, Xiaoli Zhang, Christoph R. Englert, Roderick Heelis, Michael H. Stevens, Brian J. Harding, John M. Harlander, Kenneth D. Marr, Jonathan J. Makela, Thomas J. Immel   +9 more
doaj   +1 more source

First Observation of Sawtooth‐Like Undulations in Afternoon Detached Auroral Arcs Modulated by Surface Waves at the Plasmaspheric Plume Boundary

AGU Advances, Volume 7, Issue 3, June 2026.
Abstract The afternoon detached auroral arc is an important phenomenon in the subauroral region, reflecting coupling processes between the Earth's magnetosphere and ionosphere. Previous studies have not identified fine‐scale structures in such arcs, leaving the dynamics underlying their formation poorly understood.
Huiting Feng, Dedong Wang, Yixin Hao, Yoshizumi Miyoshi, Haobo Fu, Chae‐Woo Jun, Yuzhang Ma, Yongliang Zhang, Kazushi Asamura, Yoshiya Kasahara, Shoya Matsuda, Atsuki Shinbori, Fuminori Tsuchiya, Atsushi Kumamoto, Ayako Matsuoka, Mariko Teramoto, Kazuhiro Yamamoto, Iku Shinohara, Kazuo Shiokawa, Yuri. Y. Shprits   +19 more
wiley   +1 more source

Iterative and Steady Black Auroral Stripes and Their Possible Causality in Plasma‐Sheet Electron Distributions: Implications From Low‐Altitude Reimei Observations

Journal of Geophysical Research: Space Physics, Volume 131, Issue 6, June 2026.
Abstract Iterative black auroral stripes were identified in auroral images obtained by the low‐altitude microsatellite Reimei. These steady and narrow black stripes are a remarkable feature of diffuse auroras generated by energetic electrons precipitating at higher latitudes than pulsating auroras.
Masafumi Hirahara, Yusuke Ebihara, Mizuki Fukizawa, Takanori Nishiyama, Takeshi Sakanoi   +4 more
wiley   +1 more source

Dynamics of the Thermosphere

Journal of the Meteorological Society of Japan. Ser. II, 2007
Major advances in our understanding of the dynamics of Earth's thermosphere (≈ 90-500 km) during the past 25 years are reviewed. Since the thermosphere is primarily an externally-forced system, a broad overview of the energy input, conversion and transport mechanisms in the ionosphere-thermosphere system is first provided. This serves as background and
openaire   +2 more sources

Gravity Wave Activity in the Stratosphere and Mesosphere During Hurricane Sam

Journal of Geophysical Research: Space Physics, Volume 131, Issue 6, June 2026.
Abstract Multi‐instrument observations of gravity wave (GW) activity during Hurricane Sam (2021) were made using AIRS (Atmospheric Infrared Sounder) satellite data, ERA5 reanalysis, and TIMED/SABER temperature profiles. Two GW extraction methods, vertical high‐pass filtering and empirical mode decomposition, were applied to quantify wave‐induced ...
Ayden L. S. Gann, Erdal Yiğit
wiley   +1 more source

Observation of vertical coupling during a major sudden stratospheric warming by ICON and GOLD: a case study of the 2020/2021 warming event

Frontiers in Astronomy and Space Sciences
The response of the thermospheric daytime longitudinally averaged zonal and meridional winds and neutral temperature to the 2020/2021 major sudden stratospheric warming (SSW) is studied at low-to middle latitudes (0◦ - 40◦N) using observations by NASA’s ...
Erdal Yiğit, Ayden L. Gann, Alexander S. Medvedev, Federico Gasperini, Qian Wu, Qian Wu, Md Nazmus Sakib   +6 more
doaj   +1 more source