Journal of Geophysical Research Space Physics

Journal Article

A Simulation Study of the Modulation of the Geomagnetic Field Configuration on the Seasonal Variation of Ionospheric Sq Currents

Liu, Yunbo; Ren, Zhipeng; Wei, Yong; Zhou, Xu

2024 Journal of Geophysical Research Space Physics

doi:10.1029/2023ja032180

Based on Global Coupled Ionosphere‐Thermosphere‐Electrodynamics Model, the solution of the 3‐dimensional current in the ionospheric region, the equivalent sheet current and filed‐aligned current are examined. The simulation study enables a comprehensive analysis of the effect of the geomagnetic...

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Journal Article

Revised Magnetospheric Model Reveals Signatures of Field‐Aligned Current Systems at Mercury

Pump, K.; Heyner, D.; Schmid, D.; Exner, W.; Plaschke, Ferdinand

2024 Journal of Geophysical Research Space Physics

doi:10.1029/2023ja031529

Mercury is the smallest and innermost planet of our solar system and has a dipole‐dominated internal magnetic field that is relatively weak, very axisymmetric and significantly offset toward north. Through the interaction with the solar wind, a magnetosphere is created. Compared to the...

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Journal Article

Signature of Sudden Stratospheric Warming in the Pole and Its Antipode

Dutta, Reetambhara; Sridharan, S.; Sinha, P. R.

2024 Journal of Geophysical Research Space Physics

doi:10.1029/2023ja032285

In this study, the boreal sudden stratospheric warming (SSW) event of 2013 and the austral SSW event of 2019 are considered to investigate the influence of the SSW events on the polar and antipodal upper mesosphere and lower thermosphere (UMLT) regions using ground‐based, space‐borne, reanalysis...

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Journal Article

Issue Information

2024 Journal of Geophysical Research Space Physics

doi:10.1002/jgra.57869

No abstract is available for this article.

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Journal Article

Effects of Plasma Density on the Spatial and Temporal Scale Sizes of Plasmaspheric Hiss

Zhang, Shuai; Rae, I. Jonathan; Liu, Kaijun; Watt, Clare E. J.; Shi, Quanqi;

2024 Journal of Geophysical Research Space Physics

doi:10.1029/2023ja031955

The effects of plasma density on the plasmaspheric hiss amplitude and its spatial and temporal scale sizes are investigated using data from Van Allen Probes A and B. The plasmaspheric hiss amplitude and scale sizes are found to be more affected by the small‐scale density variations than the...

Open Access

Journal Article

Absence of High Frequency Echoes From Ionosondes During the 23–25 April 2023 Geomagnetic Storm; What Happened?

Habarulema, John Bosco; Zhang, Yongliang; Matamba, Tshimangadzo; Buresova, Dalia; Lu, Gang;

2024 Journal of Geophysical Research Space Physics

doi:10.1029/2023ja032277

We report an unusual event on absence of high frequency (HF) echoes in ionosonde observations from the ionospheric F2 region during the geomagnetic storm of 23–25 April 2023. This event was observed in both southern and northern hemispheres over two stations, Grahamstown (33.3°S, 26.5°E), South...

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Journal Article

Variation in the Pedersen Conductance Near Jupiter's Main Emission Aurora: Comparison of Hubble Space Telescope and Galileo Measurements

Rutala, M. J.; Clarke, J. T.; Vogt, M. F.; Nichols, J. D.

2024 Journal of Geophysical Research Space Physics

doi:10.1029/2023ja032122

We present the first large‐scale statistical survey of the Jovian main emission (ME) to map auroral properties from their ionospheric locations out into the equatorial plane of the magnetosphere, where they are compared directly to in‐situ spacecraft measurements. We use magnetosphere‐ionosphere...

Open Access

Journal Article

A Combined Effect of the Earth's Magnetic Dipole Tilt and IMF By in Controlling Auroral Electron Precipitation

Laitinen, J.; Holappa, L.; Vanhamäki, H.

2024 Journal of Geophysical Research Space Physics

doi:10.1029/2023ja032040

Auroral particle precipitation is usually assumed to be equally strong for both signs of the By component of the interplanetary magnetic field (IMF). This is also the case in most currently used precipitation models, which parameterize solar wind driving by empirical coupling functions. However,...

Open Access

Journal Article

The Martian Ionospheric Response to the Co‐Rotating Interaction Region That Caused the Disappearing Solar Wind Event at Mars

Shaver, S. R.; Solt, L.; Andersson, L.; Halekas, J.; Jian, L.;

2024 Journal of Geophysical Research Space Physics

doi:10.1029/2023ja032181

An unusually low density solar wind event was observed in December 2022 moving past both Earth and Mars. The source was traced back to a coronal hole and active region on the Sun's surface. The resulting solar wind lead to the development of a co‐rotating interaction region (CIR) and trailing...

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Journal Article

Development of Low Latitude Long Range Ionospheric Radar for Observing Plasma Bubble Irregularities and Preliminary Results

Hu, Lianhuan; Li, Guozhu; Ning, Baiqi; Sun, Wenjie; Xie, Haiyong;

2024 Journal of Geophysical Research Space Physics

doi:10.1029/2023ja032099

The Low lAtitude long Range Ionospheric raDar (LARID), which consists of two high frequency (HF) radars looking toward the east and west of Hainan Island, respectively, has been developed and installed at Dongfang (19.2°N, 108.8°E, dip lat. 13.8°N), China. This paper describes the system design...

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