Diurnal, seasonal, latitudinal and solar cycle variation of electron temperature in the topside F-region of the Indian zone ionosphere

Chamua, Minakshi; Bhuyan, P. K.; Subrahmanyam, P.; Garg, S. C.

doi:10.5194/angeo-25-1995-2007

Cited by 3 publications

(1 citation statement)

References 39 publications

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“…Chamua et al. (2007) found that T e on both the dayside and the nightside holds a positive correlation with solar activity when averaged on shorter (monthly) time scales. However, on a longer (yearly) time scale, the correlation exhibits a time lag of about 1 year, suggesting a sort of inertia to variations in solar flux leading to a nonlinear variation of ionospheric parameters with solar flux.…”

Section: Resultsmentioning

confidence: 99%

Dependence of Parallel Electrical Conductivity in the Topside Ionosphere on Solar and Geomagnetic Activity

et al. 2021

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The increasing amount of in-situ measurements available in the topside ionosphere may help to improve our knowledge of the physical processes occurring in the near-Earth environment, their impact in response to forcing from plasma of solar origin, and eventually elaborate mitigation strategies aimed at safely managing space and ground infrastructures (Moldwin, 2008). Among these processes, the amplification and dissipation of high-latitude current systems taking place in the ionosphere play a crucial role in the magnetosphere-ionosphere coupling and may drive several phenomena relevant to space weather (Boteler &

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Section: Resultsmentioning

confidence: 99%

Dependence of Parallel Electrical Conductivity in the Topside Ionosphere on Solar and Geomagnetic Activity

et al. 2021

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Seasonal variation of Total Electron Content at equatorial station, Langkawi, Malaysia

Radzi

Abdullah

Hasbi

et al. 2013

2013 IEEE International Conference on Space Science and Communication (IconSpace)

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Latitudinal Characteristics of Nighttime Electron Temperature in the Topside Ionosphere and Its Dependence on Solar and Geomagnetic Activities

Liang,

Xu,

et al. 2024

Remote Sensing

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This study investigates the latitudinal characteristics of the nighttime electron temperature, as observed by the Defense Meteorological Satellite Program F16 satellite, and its dependence on solar and geomagnetic activities between 2013 and 2022 in the topside ionosphere, only for the winter hemispheres. The electron temperature in both hemispheres exhibited a low-temperature zone at the equator and a double high-temperature zone at the sub-auroral and auroral latitudes along the magnetic latitude. In addition, we further studied the temperature crest/trough positions in the temperature zone at different latitudes. As the solar activity intensity decreased (increased), the temperature trough position at the equator shifted from the Southern (Northern) to the Northern (Southern) Hemisphere, and the temperature double-crest positions at the sub-auroral and auroral latitudes gradually approached (moved away from) each other. Furthermore, during the geomagnetic disturbance time, the temperature double-crest positions both moved toward lower latitudes, but the temperature trough position was not sensitive to geomagnetic activity. Our analysis demonstrates that the values and correlations of the electron temperature and density varied in different temperature characteristic zones (the temperature crest/trough positions ±2°), possibly due to the different energy control factors of the electrons at different latitudes. This may also indirectly indicate the energy coupling process between the topside ionosphere and different regions at different latitudes.

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Diurnal, seasonal, latitudinal and solar cycle variation of electron temperature in the topside F-region of the Indian zone ionosphere

Cited by 3 publications

References 39 publications

Dependence of Parallel Electrical Conductivity in the Topside Ionosphere on Solar and Geomagnetic Activity

Dependence of Parallel Electrical Conductivity in the Topside Ionosphere on Solar and Geomagnetic Activity

Seasonal variation of Total Electron Content at equatorial station, Langkawi, Malaysia

Latitudinal Characteristics of Nighttime Electron Temperature in the Topside Ionosphere and Its Dependence on Solar and Geomagnetic Activities

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