Results 51 to 60 of about 11,749 (226)

Validation of Auric Model with EUV/FUV Dayglow Observation of STP78-1 Satellite [PDF]

Journal of Astronomy and Space Sciences, 2007
We carried out a validation study on AURIC FUV/EUV dayglow calculation with OII 834AA, OI 989AA, OI 1027AA, NII 1085AA, NI 1134AA, NI 1200AA, OI 1304AA, OI 1356AA dayglows observed by STP78-1 satellite.
Mi Ji Kang, Jeong-Han Kim, Yong Ha Kim
doaj   +1 more source

The May 2024 Storm: The Cusps and Dayside Magnetopause in Simulated Soft X‐Rays

Geophysical Research Letters, Volume 53, Issue 20, 28 October 2026.
Abstract The coronal mass ejection (CME) arriving at Earth on 10 May 2024 caused the most intense geomagnetic storm in the last two decades, resulting in highly unusual cusp and magnetopause dynamics. We simulate soft X‐Ray emission due to solar wind charge exchange with exospheric neutrals to image the global dayside dynamics, focusing on the impact ...
J. Ng, L.‐J. Chen, B. Burkholder, D. Sibeck, F. S. Porter, K. H. Pham, V. G. Merkin, H. Connor, J. W. Bonnell, S. Petrinec, Y. Zou, B. Alterman, G. Cucho‐Padin   +12 more
wiley   +1 more source

New perspectives on thermosphere tides: 2. Penetration to the upper thermosphere [PDF]

Earth, Planets and Space, 2014
In this paper, we present new multi-year and 72-day mean seasonal-latitudinal tidal structures in exospheric temperature derived from joint analysis of CHAMP and GRACE accelerometer measurements. These results include diurnal tides DE3, DE2, D0, and DW2 and semidiurnal tides S0, SE1, SE2, SE3, SW4, and SW6.
Forbes, J., Zhang, X., Bruinsma, S.
openaire   +3 more sources

Drag Coefficient Constraints for Space Weather Observations in the Upper Thermosphere

Space Weather, 2022
The space weather research community relies heavily on thermospheric density data to understand long‐term thermospheric variability, construct assimilative, empirical, and semiempirical global atmospheric models and validate model performance. One of the
Valerie Bernstein, Marcin Pilinski
doaj   +1 more source

Quantifying Nighttime Gravity Wave‐Driven Mesosphere‐Ionosphere Coupling Over CONUS Using NASA AWE Radiance and GNSS TEC Observations

Geophysical Research Letters, Volume 53, Issue 20, 28 October 2026.
Abstract We present the first coordinated study of nighttime mesosphere‐ionosphere coupling over the continental United States (CONUS) from January through November 2024 using NASA Atmospheric Waves Experiment (AWE) airglow measurements near 87 km and GNSS Total Electron Content observations near 300 km.
Sreelekshmi Radhakrishnan Girijakumary, Xian Lu   +1 more
wiley   +1 more source

Science Through Machine Learning: Quantification of Post‐Storm Thermospheric Cooling

Space Weather, 2022
Machine learning (ML) models are universal function approximators and—if used correctly—can summarize the information content of observational data sets in a functional form for scientific and engineering applications.
Richard J. Licata, Piyush M. Mehta, Daniel R. Weimer, Douglas P. Drob, W. Kent Tobiska, Jean Yoshii   +5 more
doaj   +1 more source

Long‐Term Increase in Equatorial Rayleigh‐Taylor Instability: Synergistic Effects of Greenhouse Gas Cooling and Geomagnetic Field Secular Variation

Geophysical Research Letters, Volume 53, Issue 20, 28 October 2026.
Abstract Equatorial plasma bubbles (EPBs) are ionospheric irregularities generated by Rayleigh–Taylor instability (RTI) that disrupt satellite communications. We quantify secular change of RTI growth rates and isolate underlying drivers using WACCM‐X simulations.
Liying Qian, Chih‐Ting Hsu, Wenbin Wang, Shun‐Rong Zhang, Joseph McInerney   +4 more
wiley   +1 more source

Impacts of Different Causes on the Inter‐Hemispheric Asymmetry of Ionosphere‐Thermosphere System at Mid‐ and High‐Latitudes: GITM Simulations

Space Weather, 2021
In this study, the Global Ionosphere Thermosphere Model is utilized to investigate the inter‐hemispheric asymmetry in the ionosphere‐thermosphere (I‐T) system at mid‐ and high‐latitudes (|geographic latitude| > 45°) associated with inter‐hemispheric ...
Yu Hong, Yue Deng, Qingyu Zhu, Astrid Maute, Cheng Sheng, Daniel Welling, Ramon Lopez   +6 more
doaj   +1 more source

Impact of the 1 April 2026 Artemis II Rocket Launch on the Upper Atmosphere: TIMED/GUVI Observations

Geophysical Research Letters, Volume 53, Issue 20, 28 October 2026.
Abstract The NASA Artemis II rocket was successfully launched at 06:35 p.m. ET (22:35 UTC) on 1 April 2026 from the Kennedy Space Center (28°35′28″N 80°39′03″W). The rocket plume caused enhanced Lyman α emission (up to ∼3 kR) observed by TIMED/GUVI on 2–6 April (5 days). Its peak intensity decreased linearly from April 3 at a rate ∼740 R/day.
Yongliang Zhang, Sam Yee, Larry J. Paxton, William H. Swartz   +3 more
wiley   +1 more source

First tristatic studies of meso-scale ion-neutral dynamics and energetics in the high-latitude upper atmosphere using collocated fpis and EISCAT radar [PDF]

, 2004
A unique experiment was undertaken during the nights of 27 and 28 February 2003. Tristatic Fabry-Perot Interferometer (FPI) measurements of the upper thermosphere were co-located with tristatic EISCAT radar measurements of the ionosphere.
Aylward, A. D., McWhirter, I., Kosch, M.J., Ford, E.A.K., Aruliah, A.L., Ford, E. A. K., Griffin, E.M., Aruliah, A. L., Howells, V.S.C., Aylward, A.D., Charalambous, A., Howells, V. S. C., Kosch, M. J., Davis, C.J., Griffin, E. M., Davis, C. J.   +15 more
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