Modelling bottom and topside electron density and TEC with profile data from topside ionograms
Modelling bottom and topside electron density and TEC with profile data from topside ionograms
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DOI：
10.1016/s0273-1177(00)00137-x
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发表时间：
2001-01-01
期刊：
影响因子：
--
通讯作者：
Depuev, V
中科院分区：
文献类型：
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作者：
Nava, B;Radicella, SM;Depuev, V
该论文描述了仅利用从 INTERCOSMOS-19 顶部电离图中获得的剖面来模拟 F2 峰上方和下方的电子密度分布的技术。从卫星高度到电离层峰值的每个单一轮廓均由 DGR 模型中使用的半 Epstein 层函数拟合，形状因子随高度变化。卫星上方的顶面高度已被外推，以匹配等离子体层电子密度的给定值，以获得完整的顶面轮廓。底面电子密度是通过使用最大电子密度及其从顶面电离图估计的高度作为 DGR 衍生轮廓仪的修改版本的输入来计算的，该轮廓仪使用电离层 foF1 和 foE 层的模型值。还计算了总电子含量。显示了从北纬 50 度到南纬 50 度的垂直剖面的纵向剖面，显示了低地磁活动和高地磁活动。这些剖面表明了地磁活跃时期的赤道异常效应和低纬度上部电离层形状的变化。讨论了这些结果和该技术的潜力。 (C) 2001 年国际空间研究委员会。由爱思唯尔科学有限公司出版。保留所有权利。
The paper describes the technique that has been implemented to model the electron density distribution above and below the F2 peak making use of only the profiles obtained from the INTERCOSMOS-19 topside ionograms. Each single profile fr-om the satellite height to the ionosphere peak has been fitted by a semi-Epstein layer function of the type used in the DGR model with shape factor variable with altitude. The topside above the satellite height has been extrapolated to match given values of plasmaspheric electron densities to obtain the full topside profile. The bottomside electron density has been calculated by using the maximum electron density and its altitude estimated from the topside ionogram as input for a modified version of the DGR derived profiler that uses model values for the foF1 and foE layers of the ionosphere. Total electron content has also been calculated. Longitudinal cross sections of vertical profiles from latitudes 50 degreesN to 50 degreesS latitude are shown for low and high geomagnetic activity. These cross sections indicate the equatorial anomaly effect and the changes of the shape of low latitude topside ionosphere during geomagnetic active periods. These results and the potentiality of the technique are discussed. (C) 2001 COSPAR. Published by Elsevier Science Ltd. All rights reserved.