Showing 401 - 420 results of 472 for search '"ionosphere"', query time: 0.05s Refine Results
  1. 401

    Physics‐Based Approach to Thermospheric Density Estimation Using CubeSat GPS Data by Shaylah M. Mutschler, Penina Axelrad, Eric K. Sutton, Dallas Masters

    Published 2023-01-01
    “…The data assimilation approach presented here estimates drivers of the Thermosphere‐Ionosphere‐Electrodynamics General Circulation Model (TIE‐GCM) every 1.5 hr using CubeSat GPS information. …”
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    Article
  2. 402

    Improving Neutral Density Predictions Using Exospheric Temperatures Calculated on a Geodesic, Polyhedral Grid by D. R. Weimer, P. M. Mehta, W. K. Tobiska, E. Doornbos, M. G. Mlynczak, D. P. Drob, J. T. Emmert

    Published 2020-01-01
    “…Several versions of the model equations have been tested, using parameters such as the date, time, solar radiation, and nitric oxide emissions, as measured with the Sounding of the Atmosphere using Broadband Emission Radiometry (SABER) instrument on the Thermosphere Ionosphere Mesosphere Energetics and Dynamics (TIMED) satellite. …”
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  3. 403

    A Quantitative Comparison of High Latitude Electric Field Models During a Large Geomagnetic Storm by L. Orr, A. Grocott, M.‐T. Walach, G. Chisham, M. P. Freeman, M. M. Lam, R. M. Shore

    Published 2023-01-01
    “…Abstract Models of the high‐latitude ionospheric electric field (EF) are commonly used to specify the magnetospheric forcing in thermosphere or whole atmosphere models. …”
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    Article
  4. 404

    Modeling of Ultraviolet Aurora Intensity Associated With Interplanetary and Geomagnetic Parameters Based on Neural Networks by Ze‐Jun Hu, Bing Han, Yisheng Zhang, Huifang Lian, Ping Wang, Guojun Li, Bin Li, Xiang‐Cai Chen, Jian‐Jun Liu

    Published 2021-11-01
    “…Abstract The spatial distribution of aurora intensity is an important manifestation of solar wind‐magnetosphere‐ionosphere energy coupling process, and it oscillates with the change of space environment parameters and geomagnetic index. …”
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    Article
  5. 405

    Long-term changes in the dependence of <i>Nm</i>F2 on solar flux at Juliusruh by M. G. Tan Jun Rios, M. G. Tan Jun Rios, C. Borries, H. Liu, J. Mielich

    Published 2025-01-01
    “…<p>Understanding ionospheric dependence on solar activity is crucial for comprehension of the upper atmosphere. …”
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    Article
  6. 406

    An Adaptive X‐Ray Dynamic Image Estimation Method Based on OMNI Solar Wind Parameters and SXI Simulated Observations by R. C. Wang, Anders M. Jorgensen, Dalin Li, Tianran Sun, Zhen Yang, Xiaodong Peng

    Published 2024-10-01
    “…Upcoming missions like the Solar Wind Magnetosphere Ionosphere Link Explorer (SMILE) and the Lunar Environment heliosphere X‐ray Imager (LEXI) aim to make comprehensive global imaging of Earth's magnetosphere using soft X‐ray imager (SXI) in order to understand its dynamic response to solar wind impact. …”
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    Article
  7. 407

    Distinct MLT asymmetry of auroral kilometric radiation observed by the FAST satellite by JiaWen Tang, Sai Zhang, FuLiang Xiao, HongMing Yang, Si Liu, YiHua He, Chang Yang, YuYue Jin, ZhouKun Deng, Ping Li, Archie James Johnston

    Published 2025-01-01
    “…Auroral Kilometric Radiation (AKR) is a common radio emission, which can contribute to the magnetosphere−ionosphere−atmosphere coupling. Similar emissions have been observed in all magnetic planet magnetospheres of the solar system. …”
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    Article
  8. 408

    Multi‐Scale Geomagnetic Forcing Derived From High‐Resolution Observations and Their Impacts on the Upper Atmosphere by Cheng Sheng, Yue Deng, William A. Bristow, Yukitoshi Nishimura, Roderick A. Heelis, Christine Gabrielse

    Published 2022-12-01
    “…For the first time in this study, a global ionosphere‐thermosphere model (GITM) is driven by such high‐resolution patterns to simulate the I‐T response to the multi‐scale geomagnetic forcing during a real event. …”
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    Article
  9. 409
  10. 410

    A 3D Empirical Model of Electron Density Based on CSES Radio Occultation Measurements by He Huang, Jian Lin, Song Xu, Huijun Le, Feng Guo, Zhima Zeren, Libo Liu, Xuhui Shen

    Published 2022-05-01
    “…About 280 thousand ionospheric radio occultation (RO) electron density profiles (EDP) have been accumulated till the end of 2020. …”
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    Article
  11. 411

    Simulation of Geomagnetically Induced Currents in a Low‐Latitude 500 kV Power Network During a Solar Superstorm by J. J. Zhang, Y. Q. Yu, W. Q. Chen, C. Wang, Y. D. Liu, C. M. Liu, L. G. Liu

    Published 2022-04-01
    “…Abstract Geomagnetically induced currents (GICs) are one of the main manifestations through which space weather affects human technical facilities, and GICs constitute the final link in the solar wind‐magnetosphere‐ionosphere‐ground interaction chain. Therefore, understanding the responses of power grids to solar superstorms is crucial for space weather research and emergency preparedness purposes. …”
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    Article
  12. 412

    Impact of Thermospheric Mass Density on the Orbit Prediction of LEO Satellites by Changyong He, Yang Yang, Brett Carter, Kefei Zhang, Andong Hu, Wang Li, Florent Deleflie, Robert Norman, Suqin Wu

    Published 2020-01-01
    “…Also considered are two small‐scale variations, that is, the equatorial mass anomaly and the midnight density maximum, which are reproduced by the Thermosphere‐Ionosphere‐Electrodynamics General Circulation Model. …”
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  13. 413

    The low-latitude sodium layer: comparative data from lidar observations at Hainan, China and São Paulo, Brazil by Fang Wu, Jing Jiao, GuoTao Yang, LiFang Du, ZhengKuan Liu, HaoRan Zheng, JiXin Guo, ShaoHua Gong, YaJun Zhu

    Published 2025-01-01
    “…Physical and chemical processes observed in the mesosphere and thermosphere above the Earth’s low latitudes are complex and highly interrelated to activity in the low-latitude ionosphere. Metallic sodium detected by lidar can yield clues to dynamic and chemical processes in these spatial layers above the Earth’s atmosphere. …”
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    Article
  14. 414

    Meteorological Anomalies During Earthquake Preparation: A Case Study for the 1995 Kobe Earthquake (M = 7.3) Based on Statistical and Machine Learning-Based Analyses by Masashi Hayakawa, Shinji Hirooka, Koichiro Michimoto, Stelios M. Potirakis, Yasuhide Hobara

    Published 2025-01-01
    “…Finally, we suggest a joint examination of our two meteorological quantities for their potential use in real short-term EQ prediction, as well as in the future lithosphere–atmosphere–ionosphere coupling (LAIC) studies as the information from the bottom part of LAIC.…”
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  15. 415
  16. 416

    Global Navigation Satellite System (GNSS) radio occultation climatologies mapped by machine learning and Bayesian interpolation by E. Shehaj, E. Shehaj, S. Leroy, K. Cahoy, A. Geiger, L. Crocetti, G. Moeller, G. Moeller, B. Soja, M. Rothacher

    Published 2025-01-01
    “…We develop a feed-forward neural network applied to Constellation Observing System for Meteorology, Ionosphere, and Climate-2 (COSMIC-2) RO observations and evaluate the performance of BI and ML by analysis of residuals when applied to test data. …”
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  20. 420

    Spread Sea Clutter Suppression in HF Hybrid Sky-Surface Wave Radars Based on General Parameterized Time-Frequency Analysis by Zhuo-qun Wang, Ya-jun Li, Jun-nan Shi, Peng-fei Wang, Ai-hua Liu, Xin-fan Xia, De-hong Chen

    Published 2020-01-01
    “…Simulation results show that such ionospheric decontamination method based on GPTF is helpful for the large-amplitude ionospheric contamination when the target masking effect happens even after ionospheric phase decontamination. …”
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    Article