The three-dimensional plasma structures and flows of the Earth's upper atmosphere due to the Moon's gravitational force

Article Engineering, Aerospace

Comparison of bottomside ionospheric profile parameters (B0 and B1) extracted from FORMOSAT-7/COSMIC-2 GNSS Radio occultations with Digisondes and IRI-2016 model

Arun Kumar Singh et al.

Summary: This study investigated the estimation of two important parameters, B0 and B1, in the specification of the bottomside electron density profile. The results revealed the daytime underestimation and nighttime overestimation features of the International Reference Ionosphere (IRI) model, and its inability to accurately represent the variation of B0 at the equatorial and low latitude sectors.

ADVANCES IN SPACE RESEARCH (2022)

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Article Environmental Sciences

Advances in Ionospheric Space Weather by Using FORMOSAT-7/COSMIC-2 GNSS Radio Occultations

Jann-Yenq Liu et al.

Summary: This paper provides an overview of the contributions of space-based global navigation satellite systems (GNSS) radio occultation (RO) measurements in advancing our understanding of ionospheric plasma physics. The study specifically focuses on the contributions of the FORMOSAT-7/COSMIC2 (F7/C2) mission and compares it with the earlier FORMOSAT-3/COSMIC (F3/C) mission. The results demonstrate the improved capabilities of F7/C2 in providing higher resolution electron density maps and profiles, as well as its applications in specifying ionospheric conditions for issuing alerts and warnings.

ATMOSPHERE (2022)

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Article Geosciences, Multidisciplinary

Retrospect and prospect of ionospheric weather observed by FORMOSAT-3/COSMIC and FORMOSAT-7/COSMIC-2

Tiger Jann-Yenq Liu et al.

Summary: The FORMOSAT-3/COSMIC (F3/C) constellation of six micro-satellites was launched in 2006 to monitor the ionosphere and study its structures and anomalies. The data collected by F3/C is crucial for ionospheric space weather forecasting and applications. F3/C has been replaced by FORMOSAT-7/COSMIC-2 (F7/C2) in 2020, which will continue to contribute to ionospheric space weather forecasting.

TERRESTRIAL ATMOSPHERIC AND OCEANIC SCIENCES (2022)

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Article Astronomy & Astrophysics

Accuracy assessment of the quiet-time ionospheric F2 peak parameters as derived from COSMIC-2 multi-GNSS radio occultation measurements

Iurii Cherniak et al.

Summary: The COSMIC-2 mission, launched in 2019 into a low-inclination orbit, provides high quality data for ionospheric electron density observations. The study validated the COSMIC-2 electron density profiles using ground-based ionosonde measurements and found good agreement between the two methods, demonstrating the reliability and accuracy of the COSMIC-2 observations.

JOURNAL OF SPACE WEATHER AND SPACE CLIMATE (2021)

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Article Multidisciplinary Sciences

Equatorial ionization anomaly response to lunar phase and stratospheric sudden warming

Tsung-Yu Wu et al.

Summary: This study examines the ionosphere response to gravitational forces of the lunar phase and dynamical disturbances of the stratospheric sudden warmings (SSWs). The results demonstrate that both lunar phase and SSWs can significantly modulate the appearance time of EIA crest and ionospheric plasma dynamics and structures, regardless of the lunar phase.

SCIENTIFIC REPORTS (2021)

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Article Geosciences, Multidisciplinary