Results 91 to 100 of about 1,392 (166)

Superposition of Doppler‐Shifting Magnetopause Kelvin‐Helmholtz Modes Through Dynamic Mode Decomposition of a Global MHD Simulation

Geophysical Research Letters, Volume 53, Issue 10, 28 May 2026.
Abstract The Kelvin‐Helmholtz instability (KHI) mediates the viscous‐like solar‐terrestrial interaction by generating magnetopause surface waves that quickly become non‐linear. Basic theory predicts the locally most‐unstable linear wave dominates.
H. M. Kelly, M. O. Archer, J. P. Eastwood, M. Heyns, J. W. B. Eggington, J. P. Chittenden   +5 more
wiley   +1 more source

The semi-annual thermospheric density variation between 200 - 560 km [PDF]

, 1988
Fourier analysis is used to find the semi-annual variation of the thermospheric total density; the variation is characterized by a "Density index D". The results of the individual annual runs were subjected to statistical treatment and a formula for the ...
Vykutilová, M., Horváth, A., Illés, E., Helali, Y.E., Sehnal, L., Tawadrous, M.Y.   +5 more
core  

LEO‐DOS Absorbed Dose Observations During the May 2024 Geomagnetic Superstorm

Geophysical Research Letters, Volume 53, Issue 10, 28 May 2026.
Abstract The Low‐Earth Orbit Space Radiation Dosimeter (LEO‐DOS) onboard Next‐Generation Satellite II (NEXTSat‐2) measured absorbed dose rate variations during the May 2024 geomagnetic superstorm. The observations show deep storm‐time penetration of solar energetic particle (SEP) spanning L ≈ 2–10, a pronounced enhancement near L ≈ 3 consistent with ...
Jongil Jung, Young‐Sil Kwak, Uk‐Won Nam, Suyeon Oh, Won‐Kee Park, Sukwon Youn, Jaeyoung Kwak, Jongdae Sohn, Bongkon Moon, Jaejin Lee, Sunghwan Kim, Sung‐Joon Ye   +11 more
wiley   +1 more source

Microsat‐2B Radiance Assimilation in the NCMRWF Global Forecasting System: Quantification of Analysis Improvement

Geophysical Research Letters, Volume 53, Issue 10, 28 May 2026.
Abstract Indian Space Research Organization (ISRO) recently launched the meteorological satellite Microsat‐2B (M2B), which provides high‐resolution atmospheric moisture radiance observations, crucial for improving the predictability of numerical weather prediction (NWP) models.
K. B. R. R. Hari Prasad, Ashish Routray, T. S. Mohan, Suryakanti Dutta, V. S. Prasad   +4 more
wiley   +1 more source

High-Cadence Thermospheric Density Estimation enabled by Machine Learning on Solar Imagery

, 2023
Accurate estimation of thermospheric density is critical for precise modeling of satellite drag forces in low Earth orbit (LEO). Improving this estimation is crucial to tasks such as state estimation, collision avoidance, and re-entry calculations.
Walsh, James, Baydin, Atılım Güneş, Acciarini, Giacomo, Malik, Shreshth A., Berger, Thomas E.   +4 more
core  

Thermospheric Mass Density

如果您有任何问题,欢迎您联系第一作者。(电子邮件:panqian@whu.edu.cn) 本文重点介绍了使用62列特征参数作为MLP和BiLSTM积分获得的模型的输入来预测热层质量密度。只有 Swarm 卫星数据用于模型的训练、验证和测试。 一、数据集 或者,您可以创建自己的数据集,该数据集由 62 列输入参数和 1 列输出参数(热层质量密度)组成,如文中所述,所有参数的分辨率线性插值为 10 秒均匀。总体时间范围为2014.02.01-2020.09.30。我们也提供生成的数据集,但由于数据集较大,因此将其拆分为多个文件(subset_i),使用时可以自行合并。 二、守则 模型框架在“模型framework.bmp”中进行了描述,有关详细说明,请参阅本文的模型构造部分,有关具体代码 ...
openaire   +2 more sources

Towards thermospheric density estimation from SLR observations of LEO satellites: a case study with ANDE-Pollux satellite

, 2018
The present contribution investigates the possibility to obtain thermospheric neutral density estimates using satellite laser ranging (SLR) observations of low Earth orbiters (LEOs).
Panzetta F., Bloßfeld M., Erdogan E., Rudenko S., Schmidt M., Müller H.
core   +1 more source

Thermospheric density estimation using SLR observations to very low Earth orbiters

, 2016
Several Low Earth Orbiters (LEOs) have been used by different research groups to model the thermospheric neutral density distribution at various altitudes performing Precise Orbit Determination (POD) in combination with satellite accelerometry so far ...
Schmidt M., Bloßfeld M., Erdogan E., Müller H.
core  

Thermospheric Exospheric Temperature and Composition Responses on 15 January 2022 Tonga Volcanic Eruption Based on the Ionosonde Observations

Geophysical Research Letters
We report thermospheric exospheric temperature and composition responses on the 15 January 2022 Tonga volcanic eruption. The temperature and composition profiles are inversed from three ionosonde (MHJ45, EG931, FF051) observed electron density profiles (∼
Tingting Yu, Zhipeng Ren, Shaoyang Li, Feng Ding, Changzhi Zhai   +4 more
doaj   +1 more source

Applying Energy Dissipation Rate GNSS Accelerometry to a Non‐Circular Orbiting Satellite

Earth and Space Science
The increase in the number of objects in Low‐Earth Orbit has heightened the demand for high‐accuracy orbital prediction models driven by dependable measurements of thermospheric mass density (TMD).
D. J. Fitzpatrick, R. L. Bishop, M. D. Pilinski, S. E. Palo   +3 more
doaj   +1 more source