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首页> 外文期刊>Journal of atmospheric and solar-terrestrial physics >The positive charge reservoir for sprite-producing lightning
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The positive charge reservoir for sprite-producing lightning

机译：用于产生子画面的闪电的正电荷库

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摘要

The close association of mesospheric sprites with positive ground flashes has led to the frequency assumption that positive charge is transferred from the top of a thunderstorm with positive-over-negative charge structure, from an altitude of 10 km or higher. Electrical and meteorological observations are reviewed which support a different picture: sprites are produced by laterally extensive mesoscale convective systems (MCS) in which the positive charge reservoir predominates in the 4-6 km ranges of altitude. The behavior of the surface electric field during the End-of-Storm Oscillation and the behavior of the vertical electric field above MCS during positive ground flashes both suggest a predominant in-cloud dipole moment with opposite polarity to that of the ordinary thundercloud. Lightning charge transfers of a few hundred Coulombs from the 4-6 km height range may be required for consistency with theories for sprite optical intensity and to account for ELF Q-burst intensity.
机译：中层小球与地面正闪光的紧密联系导致了以下频率假设：正电荷从雷暴顶部以正负电荷结构从10 km或更高的高度转移。对电气和气象观测进行了回顾，得出了不同的结论：子画面由横向扩展的中尺度对流系统（MCS）产生，其中正电荷储层在海拔4-6 km的范围内占主导地位。风暴结束振荡期间的表面电场行为和正地面闪动期间MCS上方的垂直电场行为均表明存在一个主要的云内偶极矩，其极性与普通雷云相反。为了与子画面光强度理论和ELF Q爆裂强度理论保持一致，可能需要从4-6 km高度范围内转移数百个库仑的雷电。

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