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Earth and Planetary Physics
Article . 2025 . Peer-reviewed
Data sources: Crossref
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Earth and Planetary Physics
Article . 2025
Data sources: DOAJ
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Ionospheric F-region currents estimated from Macau Science Satellite-1 and Swarm satellite magnetic data

Authors: JuYuan Xu; HongBo Yao; Keke Zhang;

Ionospheric F-region currents estimated from Macau Science Satellite-1 and Swarm satellite magnetic data

Abstract

Accurate modeling of Earth’s ionospheric F-region currents is essential for refining geomagnetic field models and understanding magnetosphere-ionosphere coupling. In this study, we develop averaged models to characterize F-region currents using magnetic data from the MSS-1 (Macau Science Satellite-1) and Swarm satellite missions. Our approach employs a toroidal field representation, utilizing spherical harmonics to capture spatial variations and Fourier series to represent temporal dynamics. Two models, Model-A and Model-B, derived from distinct datasets, are constructed to represent current patterns at altitudes of 450 km and 512 km, respectively. Our models successfully capture the primary spatial structures and seasonal variations of polar field-aligned currents. Additionally, they accurately reproduce the localized inter-hemispheric field-aligned currents observed in mid and low latitudes during solstices, particularly between 14:00 and 16:00 magnetic local times. These findings enhance our understanding of ionospheric F-region currents and contribute to more precise geomagnetic field modeling.

Keywords

Environmental sciences, geomagnetism; ionosphere, QC801-809, swarm, Science, Q, Geophysics. Cosmic physics, macau science satellite-1, GE1-350, field-aligned currents

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Published in a Diamond OA journal