MCS Stratiform and Convective Regions Associated with Sprites Observed from Mt. Fuji
MCS Stratiform and Convective Regions Associated with Sprites Observed from Mt. Fuji
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DOI：
10.3390/atmos13091460
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发表时间：
2022-09
期刊：
影响因子：
2.9
通讯作者：
Tomoyuki Suzuki;M. Kamogawa;H. Fujiwara;S. Hayashi
中科院分区：
文献类型：
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作者：
Tomoyuki Suzuki;M. Kamogawa;H. Fujiwara;S. Hayashi
2013年7月22日，在珠穆朗玛峰峰顶观测到中尺度对流系统（MCS）的层状区上方产生的五个雪碧和对流区上方产生的一个雪碧。富士。五个雪碧中有四个发生在层状区与对流区分离后的层状区。五个精灵生产+CG（SP + CG）发生在这些细胞与低闪电活动，虽然云内闪电的位置广泛地分布在层状区域。这表明正电荷足以产生SP + CG，由于局部（原位）电荷产生机制，SP + CG在层状区域中广泛积累。一个雪碧出现在MCS对流区上方，SP + CG也位于MCS对流区。视频图像表明，与SP + CG相关的光学云闪光持续至少150毫秒，直到精灵发射。光学云闪在强、弱强度上反复出现，这一特征表明闪电中的M分量发生在云中。SP + CG可能已经收集了足够的正电荷来产生具有持续电流的精灵。
Five sprites produced above the stratiform region and one sprite above the convective region in the mesoscale convective system (MCS) were observed on 22 July 2013 from the summit of Mt. Fuji. Four of the five sprites occurred in the stratiform region after the stratiform region was cut off from the convective region. The five sprite-producing +CGs (SP + CGs) occurred in and close to these cells with low lightning activity, although in-cloud lightning locations extensively spread out in the stratiform region. This suggests that positive charges were sufficient to produce the SP + CGs that accumulated extensively in the stratiform region due to a local (in situ) charge generation mechanism. One sprite occurred above the MCS convective region, and the SP + CG was also located at the MCS convective region. Video images indicated that the optical cloud flash associated with the SP + CG continued at least 150 ms until sprite emission. The optical cloud flash light occurred repeatedly at strong and weak intensities, and this characteristic indicated that the M components in the lightning occurred in the cloud. The SP + CG might have gathered sufficient positive charges to produce the sprite with a continuing current.