Results 61 to 70 of about 6,139 (217)

EUV Irradiance Inputs to Thermospheric Density Models: Open Issues and Path Forward

, 2018
One of the objectives of the NASA LWS Institute on Nowcasting of Atmospheric Drag for LEO Spacecraft was to investigate whether and how to increase the accuracy of atmospheric drag models by improving the quality of the solar forcing inputs, namely ...
Bruinsma, S., Vourlidas, A.
core   +1 more source

Roles of Surface Latent Heat Flux and Gravity Waves in Offshore MCS Development in the Coastal Eastern Tropical Pacific

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 7, 16 April 2026.
Abstract The eastern tropical Pacific (ETP) coastal region, one of the rainiest places on Earth, is characterized by distinct diurnal offshore rainfall propagation primarily driven by mesoscale convective systems (MCSs). Previous studies have shown that MCS initiation in this region peaks in the early morning, with diurnally generated gravity waves ...
Jingyi Hu, Xingchao Chen, Chin‐Hsuan Peng, L. Ruby Leung   +3 more
wiley   +1 more source

Harnessing Satellite Constellations as Signals of Opportunity for an Enhanced Specification of the Satellite Drag Environment in the Critical LEO Regime

Space Weather
Enhancing the accuracy of orbit predictions for low‐Earth orbit (LEO) satellites and debris is vitally important for satellite owner/operators dedicated to ensuring the safety and sustainability of the LEO environment.
D. J. Fitzpatrick, E. K. Sutton, M. D. Pilinski, S. E. Palo   +3 more
doaj   +1 more source

Observations and Simulation of Thermospheric Composition Changes During the 14 October 2023 Solar Eclipse

Geophysical Research Letters, Volume 53, Issue 7, 16 April 2026.
Abstract This study presents a full‐period imaging of the thermospheric composition response to the 14 October 2023 annular solar eclipse, combining GOLD (Global‐scale Observations of the Limb and Disk) far‐ultraviolet observations with solar‐irradiance‐driven WACCM‐X (Whole Atmosphere Community Climate Model with thermosphere–ionosphere extension ...
Yu Jiao, Jing Liu, Xuguang Cai, Joseph M. McInerney, Shuhan Li   +4 more
wiley   +1 more source

Daytime Ionospheric Density Enhancement Driven by Poleward Neutral Wind Shear Associated With Gravity Waves During the November 2025 Geomagnetic Storm

Geophysical Research Letters, Volume 53, Issue 7, 16 April 2026.
Abstract The threefold daytime electron density increases, along with strong poleward meridional winds exceeding 200 m/s were captured by Sanya Incoherent Scatter Radar (SYISR) during the geomagnetic storm of 12 November 2025. The great ionospheric enhancements were extending to mid‐latitudes over 40° observed by total electron content (TEC) from ...
Qi Jiang, Jiuhou Lei, Zhongli Li, Fuqing Huang, Rong Xia, Tong Dang, Xinan Yue, Xiaoli Luan   +7 more
wiley   +1 more source

A collection of lower thermospheric /100 to 300 km altitude/ chemical composition, temperature, and mass density data [PDF]

Tabulated lower thermospheric chemical composition, temperature, and mass density ...
Calloway, M. T., Weidner, D. K.
core   +1 more source

Universal Time Influence on Stormtime Magnetosphere Ionosphere Coupling

AGU Advances, Volume 7, Issue 2, April 2026.
Abstract The offset between Earth's magnetic and rotational axes introduces a diurnal dependence in the high‐latitude EUV exposure of the northern hemisphere (NH) and southern hemisphere (SH). This variation raises the question: Does the Universal Time (UT) of geomagnetic storm onset impact its geospace consequences?
Kalpesh Ghag, William Lotko, Kevin Pham, Dong Lin, Viacheslav Merkin, Anil Raghav, Michael Wiltberger   +6 more
wiley   +1 more source

Thermospheric density variations during extreme geomagnetic storms and their potential impact on the orbit of the China space station

Frontiers in Astronomy and Space Sciences
Temporal variation and spatial distribution of the thermospheric density can change significantly during geomagnetic storms. These variations in thermospheric density enhance atmospheric drag, posing risks to Low-Earth-Orbit (LEO) spacecraft.
Kun Zhang, Kun Zhang, Yanshi Huang, Yanshi Huang, Fengsi Wei, Fengsi Wei, Pingbing Zuo, Pingbing Zuo, Hao Yang, Jinlong Ji, Zehao Chen   +10 more
doaj   +1 more source

A New Global Climatological Model of the Equatorial Ionospheric Vertical E × B Drift: Integrating Ground‐Based Magnetometer, Radar, and Satellite Data Sets

Earth and Space Science, Volume 13, Issue 4, April 2026.
Abstract We present a new empirical vertical E×B $\mathbf{E}\times \mathbf{B}$ drift model developed using ground‐based magnetometer, radar, and satellite data over equatorial latitude regions. We first implement an algorithm relating magnetometer derived equatorial electrojet (EEJ) and vertical ion plasma drift (equivalent to vertical E×B $\mathbf{E ...
John Bosco Habarulema, Daniel Okoh, Endawoke Yizengaw, Valence Habyarimana, Michael Pezzopane, Paulo Roberto Fagundes, Zama Katamzi‐Joseph, Mark B. Moldwin, Claudio Cesaroni, Danny Scipion   +9 more
wiley   +1 more source

Long-term variability of CO2 and O in the Mars upper atmosphere from MRO radio science data [PDF]

, 2015
We estimate the annual variability of CO2 and O partial density using approximately 6years of Mars Reconnaissance Orbiter (MRO) radio science data from August 2006 to January 2012, which cover three full Martian years (from the northern hemisphere summer
Fricke, Susan K., Genova, Antonio, Goossens, Sander, Lemoine, Frank G., Mazarico, Erwan, Smith, David E., Zuber, Maria T.   +6 more
core   +1 more source