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首页> 外文期刊>Journal of Geophysical Research, A. Space Physics: JGR >The properties of a gigantic jet reflected in a simultaneous sprite:Observations interpreted by a model
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The properties of a gigantic jet reflected in a simultaneous sprite:Observations interpreted by a model

机译：巨大射流的特性在同时发生的精灵中反射：模型解释的观测

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Thunderstorm clouds may discharge directly to the ionosphere in spectacular luminous jets – the largest electric discharges of our planet. The properties of these “giants,” such as their polarity, conductivity, and currents, have been predicted by models, but are poorly characterized by measurements. A recent observation of a giant, fortuitously illuminated by an unusual sprite discharge in the mesosphere, allows us to study their electric properties and effects on the atmosphere-ionosphere. We show from a first-principles model of the combined giant and sprite event that the observations are consistent with the nature of the giant being a leader in the stratosphere of line charge density ～0.8 mCm~(-1) and of multiple streamers in the mesosphere. It is further shown that the giant modifies the free electron content of the lower ionosphere because of electric field-driven ionization, electron attachment and detachment processes. This is the first time that sprites are used for sounding the properties of the mesosphere. The results presented here will allow evaluation of theories for jet and gigantic jets and of their influence on the atmosphere and ionosphere.
机译：雷暴云可能以壮观的发光射流直接排放到电离层，这是我们星球上最大的放电。这些“巨无霸”的属性，例如它们的极性，电导率和电流，已经通过模型进行了预测，但是通过测量却无法很好地表征。最近发现的一个巨大的，正好被中层球体异常放电所照亮的巨人，使我们能够研究它们的电学性质以及对大气电离层的影响。我们从联合的巨人和精灵事件的第一性原理模型中看出，这些观察结果与该巨人在平流层中处于线电荷密度〜0.8 mCm〜（-1）平流层中的领导者以及该流中的多个拖缆的性质是一致的。中层。进一步表明，由于电场驱动的电离，电子附着和脱离过程，巨分子改变了下部电离层的自由电子含量。这是第一次使用Sprite探测中球的属性。此处提出的结果将有助于评估喷气和巨型喷气的理论及其对大气和电离层的影响。

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