Abstract. Mesoscale Convective Systems (MCS) are especially visible in the summertime, when there is an advection of warm maritime air from the West. Advection of air masses is enriched by water vapour, which source can be found over the Mediterranean Sea. In propitious atmospheric conditions, thus significant convection, atmospheric instability or strong vertical thermal gradient, lead to the development of strong thunderstorm systems. In this paper we discuss one case of MCS, which generated a significant amount of +CG, -CG and IC discharges. We have focused on the ELF (Extremely Low Frequencies,

中文翻译：

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中尺度对流系统，作为地面系统和DEMETER卫星记录的电磁信号源

摘要。中尺度对流系统（MCS）在夏季尤为明显，当时有来自西方的热海对流。气团的平流被水蒸气所丰富，而水蒸气的来源可以在地中海上找到。因此，在有利的大气条件下，对流，大气不稳定或强烈的垂直热梯度会导致形成强雷暴系统。在本文中，我们讨论了一种MCS情况，该情况产生了大量+ CG，-CG和IC放电。我们专注于ELF（极低频率，