Parameters of the ionospheric F2 layer as a source of information on trends in thermospheric dynamics

被引：0
|
作者：
A. D. Danilov
L. B. Vanina-Dart
机构：
[1] Institute of Applied Geophysics,Space Research Institute
[2] Russian Academy of Sciences,undefined
来源：
Geomagnetism and Aeronomy | 2010年 / 50卷
关键词：
Solar Activity; Zonal Wind; Boundary Date; Meridional Wind; Horizontal Wind;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The problem of determining trends in thermospheric dynamics parameters (horizontal winds) based on analysis of trends in various combinations of ionospheric F2-layer parameters is formulated. The previous attempts of the authors in this direction are briefly described. It is shown that all studied parameters lead to the same result: after the “boundary date” (approximately 1980) a systematic change in these parameters (a long-term trend) is observed, this fact manifesting changes in the dynamical regime of the thermosphere because of cooling and contraction of the entire middle and upper atmosphere. The results of a search for trends in the hmF2 height for the moment (T(ss) + 2 h) are described. These trends are found higher than the hmF2 trends obtained earlier by various authors analyzing the hmF2 behavior at fixed moments of local time.
引用
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页码：187 / 200
页数：13
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