通过三角形天线阵和葡萄牙南部撒哈拉沙漠远距离尘埃带电测量大气电场
Measurements of the Atmospheric Electric Field through a Triangular Array and the Long-range Saharan Dust Electrification in Southern Portugal
摘要：
大气电场（AEF）的测量进行了三个不同的网站，形成一个三角形阵列在葡萄牙南部。该活动是在撒哈拉沙尘暴爆发的夏季进行的;这里考虑的是2014年7月16日至17日的沙漠沙尘事件。尘埃长距离带电的证据归因于气地电流在尘埃层内部产生正空间电荷。在尘埃事件发生当天，观测到AEF增加约23 V/m，对应于约20-2 pCm-3的空间电荷（电荷层厚度约10-100 m）。在沙尘事件之后，观察到AEF减少。
英文摘要：
Atmospheric electric field (AEF) measurements were carried out in three different sites forming a triangular array in Southern Portugal. The campaign was performed during the summer characterized by Saharan dust outbreaks; the 16th-17th July 2014 desert dust event is considered here. Evidence of long-range dust electrification is attributed to the air-Earth electrical current creating a positive space-charge inside of the dust layer. An increase of ~23 V/m is observed in AEF on the day of the dust event corresponding to space-charges of ~20-2 pCm-3 (charge layer thicknesses ~10-100 m). A reduction of AEF is observed after the dust event.
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