Dynamic Drivers of TIFe Diurnal Cycle in Antarctica
1 Harbin Institute of Technology (Shenzhen), Guangdong 518055, China.
2 University of Colorado Boulder, Colorado 80309, USA
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Published online: 7 July 2020
The discovery of the thermosphere-ionosphere Fe (TIFe) layers has opened a door to exploring the least understood thermosphere and ionosphere region between 100 and 200 km with ground-based lidar instruments. The characteristics of the polar TIFe layers, and the impacts of the atmosphere neutral dynamics, electrodynamics, and metallic chemistry on the formation of TIFe layers deserve further investigation, especially the diurnal cycles of TIFe layers observed by lidar. This paper aims at investigating the major driving forces with 1-D Thermosphere-Ionosphere Fe/Fe+ (TIFe) model. A main question to answer is whether neutral dynamics like tidal winds or electrodynamics like the convection electric fields and currents in the magnetosphere and ionosphere are responsible for the diurnal cycle of TIFe layers.
© The Authors, published by EDP Sciences, 2020
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