Fine progression features of return stroke luminosity at the bottom of rocket-triggered lightning channels

Huang, Haitao; Wang, Daohong; Uman, M. A.; Wu, Ting; Takagi, Nobuyuki

doi:10.1541/jae.39.57

Cited by 2 publications

(2 citation statements)

References 12 publications

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“…We can see that the first clear light signal was detected by channel 6 at the height of 1,205 m and at the time of 156.1

μ

s. Note that the time corresponds to the onset of the pulse and is calculated as the time of 20% pulse peak (Huang et al., 2020). It is likely that before the time of 156.1

μ

s, the leader was propagating inside the thundercloud and thus could not be detected by the LAPOS.…”

Section: Resultsmentioning

confidence: 99%

The Strongest Negative Lightning Strokes in Winter Thunderstorms in Japan

Wang

Huang

et al. 2021

Geophysical Research Letters

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Lightning discharges in winter thunderstorms in Japan exhibit many unique features. The most well known feature is the frequent production of positive cloud-to-ground (CG) lightning flashes (Brook et al., 1982;Takeuti et al., 1978). Exceptionally powerful and energetic positive CG flashes in winter thunderstorms have been observed and investigated extensively and are known to induce transient luminous events such as sprites and elves (

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“…We can see that the first clear light signal was detected by channel 6 at the height of 1,205 m and at the time of 156.1

μ

s. Note that the time corresponds to the onset of the pulse and is calculated as the time of 20% pulse peak (Huang et al., 2020). It is likely that before the time of 156.1

μ

s, the leader was propagating inside the thundercloud and thus could not be detected by the LAPOS.…”

Section: Resultsmentioning

confidence: 99%

The Strongest Negative Lightning Strokes in Winter Thunderstorms in Japan

Wang

Huang

et al. 2021

Geophysical Research Letters

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“…It is interesting to note that a series of recoil leaders and the subsequent discharges caused by the connection of some recoil leaders to a conducting channel could extend a discharge channel with a speed similar to that of a leader. It is well known that the progression of a leader is usually driven by an ambient electric field in a relatively macro space, while the progression of a subsequent discharge, such as a RS, caused by the connection of two leaders, is driven by a gradually degrading breakdown wave (e.g., Huang et al, 2020;Wang et al, 2008). In an environment where exist traces of preceding leaders or streamers, both the local conductivity and ambient electric field could be very complicated.…”

Section: Discussionmentioning

confidence: 99%

Recoil Leader and Associated Discharge Features Observed During the Progression of a Multi‐Branched Upward Lightning Flash

Huang

Wang

et al. 2021

JGR Atmospheres

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Mazur and Ruhnke (2011) and Yoshida et al. (2012), the connection of a RL with a grounded conducting lightning channel can result in an M-component or "M-event." For the bidirectional leader, Montanyà et al. (2015) proposed that the subsequent discharge process was very similar to a return stroke (RS) in a negative cloud-toground flash. However, due to limited temporal resolutions (90-1,000 μs) in those previous studies, the connection of a RL with a conducting channel and its subsequent discharge processes have never been properly resolved before, thus their detailed features remain unknown.Using a high-speed video camera NAC and a high-speed optical imaging system Lightning Attachment Process Observation System (LAPOS3) , we observed a special discharge progression which extended its channel not through an ordinary leader, but through a series of recoil leaders and the subsequent discharges caused by the connection of the recoil leaders to other conducting leader channels. Similar discharge progression was recently reported by Wu et al. (2021). However, due to the resolution limitation (20 or 50 μs), detailed features of such a special discharge progression were not well-resolved. In this study, the sub-microsecond time resolution of LAPOS3 allows us to provide direct evidences for the detailed features of the subsequent discharges. This paper reports discharge features of recoil leaders and subsequent discharge processes. InstrumentationWe have been making observation of lightning to a windmill and its lightning protection tower at Uchinada, Japan for more than 10 years. The detailed observation items have been listed up by . For this study, an optical observation site was set about 1.45 km from the windmill and its lightning protection tower as illustrated by Takamatsu et al. (2015). The upward lightning studied in this paper was triggered from the

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Fine progression features of return stroke luminosity at the bottom of rocket-triggered lightning channels

Cited by 2 publications

References 12 publications

The Strongest Negative Lightning Strokes in Winter Thunderstorms in Japan

The Strongest Negative Lightning Strokes in Winter Thunderstorms in Japan

Recoil Leader and Associated Discharge Features Observed During the Progression of a Multi‐Branched Upward Lightning Flash

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