Results 51 to 60 of about 19,021 (226)

Initial Atmospheric Waves Experiment (AWE) Imaging Analyses: Gravity Wave Sources, Temperatures, Pseudomomentum Fluxes, and Horizontal Wavenumber Spectra at the OH Layer

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 9, 16 May 2026.
Abstract The NASA Atmospheric Waves Experiment (AWE) employs an OH imager that began measurements aboard the International Space Station (ISS) on 22 November 2023. The motivation for AWE was to quantify gravity wave (GW) responses to diverse sources and their influences extending into the mesosphere and higher altitudes.
David C. Fritts, Robert G. Stockwell, Thomas S. Lund, P.‐Dominique Pautet, Kaoru Sato, Dai Koshin, Michael J. Taylor, Ludger Scherliess   +7 more
wiley   +1 more source

Statistical Characterization of GITM Thermospheric Horizontal Winds in Comparison to GOCE Estimations

Space Weather, 2022
Characterization of the thermospheric horizontal wind is an important challenge in atmospheric modeling due to its vital role in the transport of densities and energy, associations with the diurnal tide, and interplay with vertical winds that drive ...
Daniel A. Brandt, Aaron J. Ridley
doaj   +1 more source

Seasonal Water "Pump" in the Atmosphere of Mars: Vertical Transport to the Thermosphere

, 2019
We present results of simulations with the Max Planck Institute general circulation model (MPI-MGCM) implementing a hydrological cycle scheme. The simulations reveal a seasonal water "pump" mechanism responsible for the upward transport of water vapor ...
Hartogh, Paul, Medvedev, Alexander S., Rodin, Alexander V., Shaposhnikov, Dmitry S.   +3 more
core   +1 more source

Report and Assessment of the CEDAR Workshop Demographics Between 2021 and 2024

Earth and Space Science, Volume 13, Issue 5, May 2026.
Abstract The Coupling, Energetics, and Dynamics of Atmospheric Regions (CEDAR) workshop is funded by the US National Science Foundation and held annually in the US to serve terrestrial aeronomy researchers. The CEDAR community consists of engineers, scientists, and externally funded professionals ranging from students to emeritus in their career stage ...
Angeline G. Burrell, Astrid Maute, McArthur Jones Jr.   +2 more
wiley   +1 more source

Non‐Migrating Thermal Tides in the Martian Lower Atmosphere Observed by EMM/EMIRS

Journal of Geophysical Research: Planets, Volume 131, Issue 5, May 2026.
Abstract Thermal tides significantly influence Martian atmospheric dynamics and radiative transfer. However, the excitation mechanisms of non‐migrating tides, exhibiting diverse spatial structures, remain poorly understood due to the limited number of observations.
Cong Sun, Siteng Fan, François Forget, Michael D. Smith, Sandrine Guerlet, Tao Li, Chengyun Yang, Lulu Li, Khalid M. Badri, Samuel A. Atwood, Christopher S. Edwards, Justin Deighan, Hessa R. Al Matroushi, Ehouarn Millour   +13 more
wiley   +1 more source

The Impact of the Sulfur Allotropes and Sulfur Hydrides on the Venus Cloud Chemistry

Journal of Geophysical Research: Planets, Volume 131, Issue 5, May 2026.
Abstract Venus is home to vivid sulfur chemistry, with SO2 ${\text{SO}}_{2}$ as the major sulfur gas species and a global cloud layer between 47 and 70 km composed of H2SO4 ${\mathrm{H}}_{2}{\text{SO}}_{4}$ and H2 ${\mathrm{H}}_{2}$O. The chemistry in the clouds has been extensively studied with 1D models, but none is able to reproduce the three orders
Maxence Lefèvre, Franck Lefèvre, Anni Määttänen, Robert Skog, Benjamin Frandsen, Aurélien Stolzenbach, Ashwin Braude   +6 more
wiley   +1 more source

Thermosphere and satellite drag

Advances in Space Research, 2023
Accurate forecasts of thermosphere densities, realistic calculation of aerodynamic drag, and propagation of the uncertainty on the predicted orbit positions are required for conjunction analysis and collision avoidance decision making. The main focus of the Committee on Space Research (COSPAR) International Space Weather Action Teams (ISWAT) involved ...
Bruinsma, Sean, Dudok de Wit, Thierry, Fuller-Rowell, Tim, Garcia-Sage, Katherine, Mehta, Piyush, Schiemenz, Fabian, Shprits, Yuri, Vasile, Ruggero, Yue, Jia, Elvidge, Sean   +9 more
openaire   +4 more sources

Observations of High‐Resolution Two‐Dimensional Ionospheric Flow Dynamics Associated With Poleward Boundary Intensifications

Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.
Abstract Poleward boundary intensifications (PBIs) are one of the most common auroral disturbances and have been shown to play a key role in substorm dynamics. PBIs are commonly interpreted as the ionospheric signature of magnetotail reconnection, providing insight into X‐line evolution.
Katherine Davidson, Yukitoshi Nishimura, Larry Lyons, Eric Donovan, Vassilis Angelopoulos, Nozomu Nishitani   +5 more
wiley   +1 more source

MSIS‐UQ: Calibrated and Enhanced NRLMSIS 2.0 Model With Uncertainty Quantification

Space Weather, 2022
The Mass Spectrometer and Incoherent Scatter radar (MSIS) model family has been developed and improved since the early 1970's. The most recent version of MSIS is the Naval Research Laboratory (NRL) MSIS 2.0 empirical atmospheric model.
Richard J. Licata, Piyush M. Mehta, Daniel R. Weimer, W. Kent Tobiska, Jean Yoshii   +4 more
doaj   +1 more source

On the Strength of Solar Forcing in the Earth's Thermosphere

Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.
Abstract We report the signature of solar forcing in the thermosphere using daytime temperature profiles from the Michelson Interferometer for Global High‐resolution Thermospheric Imaging (MIGHTI) instrument on NASA's Ionospheric Connection (ICON) Explorer mission.
Michael H. Stevens, McArthur Jones Jr., J. Scott Evans, Brian J. Harding, Manbharat S. Dhadly, Thomas J. Immel   +5 more
wiley   +1 more source