Results 101 to 110 of about 6,140,836 (207)

Seasonal and Diurnal Variability of Thermospheric Metastable Helium Observed by Multi‐Platform Observations and Numerical Modeling

Geophysical Research Letters, Volume 53, Issue 20, 28 October 2026.
Abstract Metastable helium (He∗ ${\text{He}}^{\ast }$) in the thermosphere emits at 1,083 nm and provides a powerful diagnostic of thermospheric composition, solar radiation, and transport. Its detection remains challenging because of its extremely low density and high‐altitude.
Zhenwei Liu, Chuan Huang, Jinru Cheng, Tangsheng Cheng, Hang Zhou, Chaomei Wu, Chen Liang, Tingdi Chen, Weilong Luo, Chong Wang, Zhaofeng Wang, Ruocan Zhao, Xianghui Xue   +12 more
wiley   +1 more source

Understanding and Modeling the Dynamics of Storm‐Time Atmospheric Neutral Density Using Random Forests

Space Weather
Atmospheric neutral density is a crucial component to accurately predict and track the motion of satellites. During periods of elevated solar and geomagnetic activity atmospheric neutral density becomes highly variable and dynamic.
K. Murphy, A. J. Halford, V. Liu, J. Klenzing, J. Smith, K. Garcia‐Sage, J. Pettit, I. J. Rae   +7 more
doaj   +1 more source

Decomposing solar and geomagnetic activity and seasonal dependencies to examine the relationship between GPS loss of lock and ionospheric turbulence. [PDF]

Sci Rep, 2023
Lovati G, De Michelis P, Consolini G, Pezzopane M, Pignalberi A, Berrilli F.   +5 more
europepmc   +1 more source

Quasi‐Homologous Solar Flares and Impacts on Thermospheric Density and Satellite Orbital Drag

Geophysical Research Letters, Volume 53, Issue 20, 28 October 2026.
Abstract Quasi‐Homologous Flaring (QHF) activity from active regions on the Sun releases intense electromagnetic radiation in recurrent bursts over extended periods. In this letter, we present the effects of recurrent impulsive extreme ultraviolet (EUV) heating on thermospheric neutral density and the resulting atmospheric drag on satellites based on ...
S. Tulasi Ram, Princy K. Dubey, S. Mondal, Denny M. Oliveira, Jayashree Bulusu, Chinmaya Nayak, D. Rout, Anil Raghav, A. P. Dimri   +8 more
wiley   +1 more source

Local Acceleration of Multi‐MeV Electrons Inside Earth's Impenetrable Barrier During the May 2024 Superstorm

Geophysical Research Letters, Volume 53, Issue 20, 28 October 2026.
Abstract The inner radiation belt (L* < 3) has long been considered an impenetrable barrier to ultra‐relativistic electrons. Here we show that this barrier can be breached under extreme space weather conditions. Using continuous near‐equatorial observations from the Arase satellite, we show that the May 2024 superstorm rapidly generated multi‐MeV ...
Y. Miyoshi, S. Kurita, A. Shinbori, K. Yamamoto, C.‐W. Jun, S. Matsuda, S. Saito, R. Kataoka, D. Wang, I. Shinohara, T. Takashima, T. Mitani, N. Higashio, A. Matsuoka, Y. Kasahara, F. Tsuchiya, A. Kumamoto, T. Hori, N. Kitamura, M. Teramoto   +19 more
wiley   +1 more source

Solar and geomagnetic activity enhance the effects of air pollutants on atrial fibrillation. [PDF]

Europace, 2022
Zilli Vieira CL, Link MS, Garshick E, Peralta AA, Luttmann-Gibson H, Laden F, Liu M, Gold DR, Koutrakis P.   +8 more
europepmc   +1 more source

First Observation of Four‐Band Ion Cyclotron Whistlers

Geophysical Research Letters, Volume 53, Issue 20, 28 October 2026.
Abstract Ion cyclotron whistlers are frequently observed in low Earth orbit, typically formed when right‐hand polarized lightning whistlers undergo polarization reversal at crossover frequencies. In this study, we for the first time report a four‐band ion cyclotron whistler event detected by Van Allen Probe A.
Huicong Chen, Hui Zhu, Tao Xian, Gaopeng Lu, Yingying Zhao, Zhijie Qin, Zhenghao She   +6 more
wiley   +1 more source

Continuous underground observation of the geomagnetic field in Xuzhou City, North China, and its time-varying characteristics

Frontiers in Earth Science
Underground space in Xuzhou City, North China, has become a favorable site for continuous geomagnetic observation to reveal geomagnetic-field variations and to monitor seismic activity due to its distinct advantage of an “ultra-quiet” and “ultra-clean ...
Mei Han, Mei Han, Lianghui Guo, Lianghui Guo, Lianghui Guo, Yun Wang, Yun Wang, Xiang Wang, Xiang Wang   +8 more
doaj   +1 more source

Solar and geomagnetic activity reduces pulmonary function and enhances particulate pollution effects. [PDF]

Sci Total Environ, 2022
Anand K, Vieira CLZ, Garshick E, Wang V, Blomberg A, Gold DR, Schwartz J, Vokonas P, Koutrakis P.   +8 more
europepmc   +1 more source

The Long‐Term Trend of the Equatorial Electrojet Over Indian Sector

Geophysical Research Letters, Volume 53, Issue 20, 28 October 2026.
Abstract The upper‐atmosphere cooling trend is well documented, while the long‐term trend of the ionospheric electrodynamics remains poorly understood. Using two geomagnetic observation data sets over Indian sector, we analyze the long‐term trend of the monthly‐median equatorial electrojet (EEJ) in 1967–2015 after removing the solar activity and ...
Ruilong Zhang, Xu Zhou, Yuzhou Wang, Libo Liu, Yiding Chen, Huijun Le   +5 more
wiley   +1 more source