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首页> 外文期刊>Journal of Geophysical Research. Biogeosciences >Coordinated incoherent scatter radar study of the January 1997 storm
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Coordinated incoherent scatter radar study of the January 1997 storm

机译：1997年1月风暴的非相干散射雷达协调研究

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摘要

We describe many important features of the ionospheric F region as observed by the Sondrestrom, Millstone Hill, and Arecibo incoherent scatter radars (ISRs) and the Millstone Hill and Ramey Digisondes during January 6-10, 1997, with emphasis on the January 10, 1997 storm. Coordinated analysis of the data provides evidence for traveling atmospheric disturbances (TADs) and for two likely electric field penetration events linking these stations. Large and rapid changes in hmF_2 were seen at Arecibo and nearby Ramey which are related to the TADs and penetrating electric fields. Results are compared with simulations by the thermosphere-ionosphere electrodynamics general circulation model (TIEGCM), which utilizes high-latitude inputs given by the assimilative mapping of ionospheric electrodynamics (AMIE) technique. An important result of this study is that the TIEGCM is able to predict TADs similar to those observed. Exceptional features observed during this storm at Millstone Hill are a very large nighttime T_e enhancement on January 10 and a larger decreases in NmF_2 than predicted by the TIEGCM throughout the storm period. The latter appears to be related to an underestimation of the neutral temperature by the model.
机译：我们描述了Sondrestrom，Millstone Hill和Arecibo非相干散射雷达（ISR）以及Millstone Hill和Ramey Digisondes在1997年1月6日至10日观察到的电离层F区的许多重要特征，重点是1997年1月10日风暴。数据的协调分析为行进的大气干扰（TAD）以及链接这些站的两个可能的电场穿透事件提供了证据。在阿雷西博（Arecibo）和附近的拉米（Ramey）发现hmF_2发生了大而快速的变化，这与TAD和穿透电场有关。将结果与热球-电离层电动力学通用循环模型（TIEGCM）的模拟进行比较，该模型利用电离层电动力学（AMIE）技术的同化映射给出的高纬度输入。这项研究的重要结果是TIEGCM能够预测与观察到的TAD类似的TAD。在Millstone Hill这场风暴中观察到的异常特征是，1月10日夜间的T_e极大增强，NmF_2的下降幅度大于整个风暴期间TIEGCM的预测。后者似乎与模型对中性温度的低估有关。

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