Results 111 to 120 of about 1,392 (166)

Interhemispheric and longitudinal differences in the ionosphere–thermosphere coupling process during the May 2024 superstorm

Earth and Planetary Physics
Geomagnetic storm events have a strong influence on the ionosphere–thermosphere (I-T) coupling system. Analyzing the regional response process of the I-T system and its differences across the northern and southern hemispheres is an important but ...
WenBo Li, LiBo Liu, YuYan Yang, TingWei Han, RongJin Du, RuiLong Zhang, HuiJun Le, YiDing Chen   +7 more
doaj   +1 more source

On the possible use of radio occultation middle latitude electron density profiles to retrieve thermospheric parameters

, 2014
This paper investigates possible use of middle latitude daytime COSMIC and CHAMP ionospheric radio occultation (IRO) electron density profiles (EDPs) to retrieve thermospheric parameters, based on the Mikhailov et al ...
Beleaki, A., Andrei V. Mikhailov, Bruno Zolesi, Tsagouri, I., Mikhailov, A., Perrone, L., Anna Belehaki, Ioanna Tsagouri, Loredanna Perrone, Zolesi, B.   +9 more
core   +1 more source

Thermospheric Wind Response to March 2023 Storm: Largest Wind Ever Observed With a Fabry‐Perot Interferometer in Tromsø, Norway Since 2009

Space Weather
Solar cycles 24–25 were quiet until a geomagnetic storm with a Sym‐H index of −170 nT occurred in late March 2023. On March 23–24, a Fabry‐Perot interferometer (FPI; 630 nm) in Tromsø, Norway, recorded the highest thermospheric wind speed of over 500 m/s
S. Oyama, H. Vanhamäki, L. Cai, A. Shinbori, K. Hosokawa, T. Sakanoi, K. Shiokawa, A. Aikio, I. I. Virtanen, Y. Ogawa, Y. Miyoshi, S. Kurita, N. Nishitani   +12 more
doaj   +1 more source

Thermospheric Density Prediction Based on Electron Density Assimilation

Chinese Journal of Space Science, 2019
Yanan ZHANG, Xiaocheng WU, Xiong HU
openaire   +1 more source

A Machine Learning-Based Thermospheric Density Model with Uncertainty Quantification

Conventional thermospheric density models are limited in their ability to capture solar-geomagnetic coupling dynamics and lack probabilistic uncertainty estimates.
Xin Ning, Junzhi Li, Yong Wang
core   +1 more source

Were Gravity Waves or Lamb Waves Responsible for the Large‐Scale Thermospheric Response to the Tonga Eruption?

AGU Advances
The extraordinary eruption of the Tonga volcano on 15 January 2022 lofted material to heights exceeding 50 km, marking the highest observed since the satellite era.
Ruoxi Li, Jiuhou Lei, Shun‐Rong Zhang, Feifan Liu, Xuetao Chen, Xiaoli Luan, Xing Meng   +6 more
doaj   +1 more source

Thermospheric temperature, density, and composition: New models

, 1977
The models essentially consist of two parts: the basic static models, which give temperature and density profiles for the relevant atmospheric constituents for any specified exospheric temperature, and a set of formulae to compute the exospheric ...
Jacchia, L. G.
core  

A swarm of femtosatellites for lower thermospheric density determination.

, 2015
The Lower thermosphere (between 80 and 350 km) is quite badly known due to the scarcity of satellites in this region. Nevertheless, it is an important region in several respects. Firstly, because its density determines when a falling satellite will reenter the dense layers of the atmosphere, thus affecting at reentry predictions. Secondly, it is highly
openaire   +2 more sources

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

, 1970
Tabulated lower thermospheric chemical composition, temperature, and mass density ...
Calloway, M. T., Weidner, D. K.
core  

Thermospheric density model biases at sunspot maximum

, 2010
A previous study (Pardini C., Anselmo L, Moe K., Moe M.M., Drag and energy accommodation coefficients during sunspot maximum, Adv. Space Res., 2009, doi:10.1016/j.asr.2009.08.034), including ten satellites with altitudes between 200 and 630 km, has yielded values for the energy accommodation coefficient as well as for the physical drag coefficient as a
Pardini, Carmen [1], Moe, Kenneth [2], Anselmo, Luciano [1]   +2 more
openaire   +2 more sources