Results 91 to 100 of about 24,137 (262)

An Investigation on Effect of Data Resolution on Vertical Wavenumber Spectrum of Gravity Waves From Radiosonde Observations

Earth and Space Science, Volume 12, Issue 10, October 2025.
Abstract Spectral structure of gravity waves (GWs) attracted much attention because it is related to wave dissipation mechanism and parameterization effect. Although many works have studied the spectral variation of GWs and attributed this change to factors such as height, season and latitude, impact of observational resolution on wave spectrum was ...
Fang Zheng Cheng, Kai Ming Huang, Shao Dong Zhang, Alan Z. Liu, Chun Ming Huang, Jun Li, Yun Gong, Zheng Ma, He He   +8 more
wiley   +1 more source

The thermospheric auroral red line polarization: confirmation of detection and first quantitative analysis

Journal of Space Weather and Space Climate, 2013
The thermospheric atomic oxygen red line is among the brightest in the auroral spectrum. Previous observations in Longyearbyen, Svalbard, indicated that it may be intrinsically polarized, but a possible contamination by light pollution could not be ruled
Moen Joran, Bommier Véronique, Wedlund Cyril Simon, Lamy Hervé, Amblard Pierre-Olivier, Barthélémy Mathieu, Lilensten Jean, Rothkaehl Hanna, Eymard Julien, Ribot Jocelyn   +9 more
doaj   +1 more source

Multiple‐Event Study of Substorm Electric Field Penetration Into Middle Latitudes Based on Simultaneous Observation of 630‐nm Airglow Enhancements at Three Stations

Journal of Geophysical Research: Space Physics, Volume 130, Issue 10, October 2025.
Abstract It is known that convection electric fields develop in the polar region associated with substorm onset, and a westward electric field penetrates to lower latitudes on the night side. Two‐dimensional observations of 630‐nm airglow enhancements associated with the westward electric field can be conducted using all‐sky cameras at middle latitudes.
S. Morita, K. Shiokawa, Y. Otsuka, N. Nshitani, A. Shinbori, A. Fujimoto, A. Yoshikawa, M. Nishioka, S. Perwitasari, M. Yamamoto, T. Sori   +10 more
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

Daytime Thermospheric Wind Transients and Circulation in May 2021

Journal of Geophysical Research: Space Physics, Volume 130, Issue 10, October 2025.
Abstract Changes in the thermospheric wind originating in storm‐time transients in high‐latitude Joule heating and ion circulation are effective in modifying conditions throughout Earth's upper atmosphere and ionosphere. Among the effects these drivers can produce are large‐scale gravity waves (GWs), characterized by significant wind transients that ...
Thomas J. Immel, Lily Oglesby, Brian J. Harding, Astrid Maute, Yen‐Jung Wu, Romina Nikoukar, Colin Triplett   +6 more
wiley   +1 more source

Editorial: Coupling Processes in Terrestrial and Planetary Atmospheres

Frontiers in Astronomy and Space Sciences, 2022
Erdal Yiğit, Hermann Lühr, Alexander S. Medvedev, William Ward, Ana G. Elias, Jorge Luis Chau, Yoshizumi Miyoshi, Sonal Jain, Libo Liu   +8 more
doaj   +1 more source

Diurnal Temperature Variations and Migrating Thermal Tides in the Martian Lower Atmosphere Observed by the Emirates Mars InfraRed Spectrometer

Journal of Geophysical Research: Planets, Volume 130, Issue 10, October 2025.
Abstract The Martian atmosphere experiences large diurnal variations due to the ∼24.6 hr planetary rotation and its low heat capacity. Understanding such variations on a planetary scale is limited due to the lack of observations, which are greatly addressed with the recent advent of the Emirates Mars Mission (EMM).
Siteng Fan, François Forget, Michael D. Smith, R. John Wilson, Sandrine Guerlet, Khalid M. Badri, Samuel A. Atwood, Roland M. B. Young, Christopher S. Edwards, Philip R. Christensen, Justin Deighan, Hessa R. Al Matroushi, Antoine Bierjon, Jiandong Liu, Ehouarn Millour   +14 more
wiley   +1 more source

Thermospheric Density Disturbances During the 2015 St. Patrick's Day Geomagnetic Storm: Model–Observation Comparisons and Analysis of Intense Polar Density Spikes

Space Weather, Volume 23, Issue 10, October 2025.
Abstract Drag affecting satellites in low Earth orbit varies significantly during geomagnetic storms due to changes in thermospheric density. While neutral density can be inferred from satellite measurements, such data sets are limited and restrict neutral density/orbit prediction capabilities.
E. J. Blanchfield, B. A. Carter, J. L. Currie, J. M. Weygand, G. N. Iles   +4 more
wiley   +1 more source

Reduced Order Probabilistic Emulator of RAM‐SCB: Toward Non‐Linearity With Autoencoders

Space Weather, Volume 23, Issue 10, October 2025.
Abstract An accurate understanding of the Earth's ring current dynamics is integral to predicting the impacts of geomagnetic storms. We use physics‐based models to simulate the ring current such as the Ring‐current Atmosphere interactions Model with Self‐Consistent Magnetic Field (RAM‐SCB).
Q. Al Shidi, P. M. Mehta
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