Forecasting low-latitude radio scintillation with 3-D ionospheric plume models: 1. Plume model
Forecasting low-latitude radio scintillation with 3-D ionospheric plume models: 1. Plume model
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DOI：
10.1029/2008ja013839
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发表时间：
2010-03
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--
通讯作者：
J. Retterer
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文献类型：
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作者：
J. Retterer
[1]发展了一个由低纬电离层交换不稳定引起的等离子体羽流的三维模式，以描述羽流内部和周围的湍流产生的射电闪烁的结构和范围(精确到计算机模型可分辨的尺度尺寸)。由于包含了确定平行于地磁力线和横向于地磁力线的等离子体传输的过程，该模型可以预测羽流及其闪烁在纬度上的范围。为了更好地反映羽流发生的日常变化，该模型与环境电离层的时间相关模型紧密耦合，以描述导致湍流的等离子体不稳定必须在其下发挥作用的变化条件。这里提供的诊断将说明在羽流模型中发现的密度结构，包括显示羽流内密度耗尽影响的气辉发射图。另一篇文章给出了羽流引起的幅度闪烁的相位屏计算。引用：Retterer，J.M.(2010)，用3-D电离层羽流模型预测低纬射电闪烁：1.羽流模型，J.地球物理。第115号，A03306，DOI：10.1029/2008JA013839。
[1] A three‐dimensional model has been developed for the plasma plumes caused by interchange instabilities in the low‐latitude ionosphere to describe the structure and extent of the radio scintillation generated by turbulence in and around the plumes (down to the scale sizes resolvable by the computer model). With the inclusion of the processes that determine the transport of plasma parallel to the geomagnetic field lines as well as transverse to them, the model can predict the extent in latitude of the plumes and their scintillation. To better reflect the day‐to‐day variability of the occurrence of the plumes, the model is closely coupled to a time‐dependent model of the ambient ionosphere to describe the changing conditions under which the plasma instabilities that cause the turbulence must act. Diagnostics presented here will illustrate the density structures found in the models of the plumes, including maps of airglow emissions which show the effect of the density depletions within the plumes. A companion paper presents a phase‐screen calculation of the amplitude scintillation caused by the plumes. Citation: Retterer, J. M. (2010), Forecasting low‐latitude radio scintillation with 3‐D ionospheric plume models: 1. Plume model, J. Geophys. Res., 115, A03306, doi:10.1029/2008JA013839.