利用超级双极光雷达网监测电离层空间天气

J. Baker, J. Ruohoniemi, A. J. Ribeiro, L. Clausen, R. Greenwald, N. Frissell, K. A. Sterne
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引用次数: 3

摘要

由高频雷达组成的超级双极光雷达网(superdamn)监测两个半球中高纬度的电离层空间天气。superdam是一项国际合作,涉及来自十多个国家的科学家和工程师。我们感兴趣的反向散射目标是沿地磁场排列的电离层等离子体密度的不规则性。不规则的多普勒运动可以用来推断电离层电场的强度和方向。这些连续获得的测量结果提供了有关磁层-电离层耦合系统在扩展空间尺度和高时间分辨率上的电动力学的宝贵信息。本文简要回顾了superdam的历史,特别强调了近年来该网络向中高纬度地区的扩展。本文还介绍了一种吸收多雷达数据来生成电离层等离子体半球运动状态空间天气图的技术。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Monitoring ionospheric space weather with the Super Dual Auroral Radar Network (SuperDARN)
The Super Dual Auroral Radar Network (SuperDARN) of high frequency radars monitors ionospheric space weather at middle to high latitudes in both hemispheres. SuperDARN is an international collaboration involving scientists and engineers from over a dozen countries. The backscatter targets of interest are irregularities in the ionospheric plasma density that are aligned along the geomagnetic field. The Doppler motion of the irregularities can be used to infer the strength and direction of the ionospheric electric field. These measurements, obtained continuously, provide valuable information about the electrodynamics of the coupled magnetosphere-ionosphere system over extended spatial scales and with high time resolution. In this paper, the history of SuperDARN is briefly reviewed with a particular emphasis on the recent expansion of the network to middle and higher latitudes. A technique for assimilating multi-radar data to produce space weather maps of the hemispheric state of ionospheric plasma motion is also described.
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