Modeling of Topside Ionosphere and Plasmasphere
Modeling of Topside Ionosphere and Plasmasphere
复制标题
上部电离层和等离子体层的建模
DOI：
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发表时间：
2021
期刊：
影响因子：
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通讯作者：
I. Shinohara
中科院分区：
文献类型：
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作者：
S. Watanabe;Y. Miyoshi;F. Tsuchiya;A. Kumamoto;Y. Kasahara;A. Matsuoka;I. Shinohara
我们使用了来自日本Hinotori、Akebono和ARASE卫星的大约500万个电子密度数据集，使用机器学习技术开发了一个新的顶部电离层和等离子体层模型。顶部电离层和等离子体层模型(TIP-模型)可以根据纬度、经度、世界时、季节以及太阳和磁活动的时间历史来估计500公里至30,000公里高度的电子密度。该模型显示了等离子体层对太阳和磁场活动的响应与时间相关的3D结构。所构建的TIP模型再现了等离子体滞留、等离子体层的等离子体尾部/侵蚀以及等离子体在磁极附近逃逸。对2,000~30,000公里高度的电子密度进行积分，得到等离子体层总电子含量(TEC)。等离子体层的TEC在磁赤道附近约为5Tecu，它强烈地依赖于地磁纬度、经度、当地时间以及太阳和磁场活动。
We developed a new topside ionosphere and plasmasphere model using a machine learning technique using approximately five million electron density datasets from the Japanese satellites, namely, Hinotori, Akebono, and Arase. The topside ionosphere and plasmasphere model (TIP-model) can estimate electron densities at altitudes ranging from 500 km to 30,000 km in terms of latitude, longitude, universal time, season, and solar and magnetic activities with time history. The model shows the time-dependent 3D structure of the plasmasphere in response to solar and magnetic activities. The constructed TIP-model reproduces plasmapause, plasma tail/erosion of the plasmasphere, and the plasma escape near the magnetic pole. The total electron content (TEC) in the plasmasphere was also obtained through the integration of electron density from 2,000 km to 30,000 km altitudes. The TEC of the plasmasphere is approximately 5 TECU near the magnetic equator, and it depends strongly on geomagnetic latitude, longitude, local time, and solar and magnetic activities.