Results 81 to 90 of about 847,572 (191)

Quasi 6‐Day Wave Variability in the Thermosphere and Ionosphere: Observations and Modeling

Earth and Space Science, Volume 13, Issue 9, September 2026.
Abstract Satellite observations of the upper mesosphere and lower thermosphere from TIMED‐SABER and ICON‐MIGHTI reveal a clear Quasi 6‐Day Wave (Q6DW) event in the winds and temperatures in this region. This Q6DW event persists across multiple data sets throughout the middle‐to‐upper thermosphere and the F‐region ionosphere, including GOLD disk ...
Oluwafisayo P. Owolabi, Scott L. England, Yen‐Jung Wu   +2 more
wiley   +1 more source

Impact of Solar Cycles on the Electron Density in the Ionosphere—An 18‐Year Combined Observation From FORMOSAT‐3/COSMIC and FORMOSAT‐7/COSMIC‐2

Journal of Geophysical Research: Space Physics, Volume 131, Issue 9, September 2026.
Abstract The Earth's ionosphere is sensitive to variations in solar irradiance associated with the 11‐year and the 27‐day solar cycles (SCs). Previous studies have suggested that the peak altitude of the 27‐day SC response in ionospheric electron density is significantly higher than that of the 11‐year SC response, but the underlying mechanism remains ...
Shuhui Wang, King‐Fai Li, Mao‐Chang Liang, Ka‐Kit Tung, Lin Tan   +4 more
wiley   +1 more source

Validation of Bottom-Up GNSS Radio Occultation Method to Measure D- and E-Region Electron Density [PDF]

, 2023
An in-depth validation of a new bottom-up approach using GNSS Radio Occultation (GNSS-RO) data to generate electron density profiles in the D- and E-region ionosphere.
Shaver, Dylan J.
core   +1 more source

Analysis of GNSS radio occultation data from satellite ZH-01

Earth and Planetary Physics, 2018
The electromagnetic satellite Zhangheng 01 (ZH-01) was successfully launched on February 2, 2018. The GNSS Radio Occultation (GRO) receiver on board the satellite is able to observe the occultation events of GPS and BeiDou navigation satellites.
Yan Cheng, Jian Lin, XuHui Shen, Xiang Wan, XinXing Li, WenJun Wang   +5 more
doaj   +1 more source

An Evaluation of Fengyun-3C Radio Occultation Atmospheric Profiles Over 2015–2018

Remote Sensing, 2020
Fengyun-3C (FY-3C) is the first Chinese satellite that is capable of using the Radio Occultation (RO) technique to retrieve atmospheric profiles. This research evaluates the quality of FY-3C RO profiles including refractivity, temperature, and specific ...
Jinde Wei, Ying Li, Kefei Zhang, Mi Liao, Weihua Bai, Congliang Liu, Yan Liu, Xiaoming Wang   +7 more
doaj   +1 more source

The Ionosphere as an Operational Constraint on Space‐Based Solar Power

Space Weather, Volume 24, Issue 9, September 2026.
Abstract This commentary argues that there is an urgent need to develop a scientific consensus on how microwave beams from space‐based solar power (SBSP) satellites will interact with plasma in the ionosphere. Whilst the SBSP concept dates back to the 1970s, it is now gaining traction around the world as a technology that could contribute baseline ...
Mike Hapgood
wiley   +1 more source

Sub‐Seasonal Impact of GNSS Radio Occultation Data

Geophysical Research Letters
Abstract This study investigates for the first time whether the assimilation of the Global Navigation Satellite System Radio occultation (GNSS‐RO) data has a significant impact on the European Centre for Medium‐Range Weather Forecasts sub‐seasonal forecasts.
K. Lonitz, F. Vitart, S. B. Healy, Qiang Fu   +3 more
openaire   +1 more source

Long‐Lived Equatorial Plasma Bubbles Persisting Into the Afternoon Over the Pacific Sector During the Recovery Phase of the April 2023 Geomagnetic Storm

Space Weather, Volume 24, Issue 9, September 2026.
Abstract Equatorial plasma bubbles (EPBs) are typically nighttime ionospheric irregularities, and their persistence into daytime sectors remains insufficiently understood. Here, we investigate long‐lived EPB‐related plasma depletion structures over the Pacific sector during the recovery phase of the 23–25 April 2023 geomagnetic storm using Formosa ...
Hailun Ye, Wen Yi, Jianfei Wu, Bingkun Yu, Penghao Tian, Xianghui Xue, Yajun Zhu, Jianyuan Wang, Jianyong Lu, Jian Li, Chong Wang, Tingdi Chen, Xiankang Dou   +12 more
wiley   +1 more source

Forward operator for polarimetric radio occultation measurements [PDF]

Atmospheric Measurement Techniques
Global Navigation Satellite System (GNSS) polarimetric radio occultation (PRO) observations sense the presence of hydrometeor particles along the ray path by measuring the difference of excess phases in horizontally and vertically polarised carrier waves.
D. Hotta, D. Hotta, K. Lonitz, S. Healy
doaj   +1 more source

Validation of ANCHOR Ionospheric Data Assimilation Model Using GIRO Ionosondes Within PyVALION Software

Radio Science, Volume 61, Issue 8, August 2026.
Abstract Accurate specification of the ionosphere is essential for mitigating the impacts of space weather on communication, navigation, and surveillance systems. ANCHOR is a newly developed ionospheric data assimilation (DA) model from the U.S. Naval Research Laboratory that fuses measurements from ionosondes, radio occultation, and Global Navigation ...
Victoriya V. Forsythe, Katherine A. Zawdie, Dustin Hickey, Angeline G. Burrell   +3 more
wiley   +1 more source