Observation of Electrical Alignment Signatures in an Isolated Thunderstorm by Dual-Polarized Phased Array Weather Radar and the Relationship With Intracloud Lightning Flash Rate

Wang, Shuo; Wada, Yuuki; Hayashi, Syugo et al.

Journal of Geophysical Research: Atmospheres, 2024, 129(19), e2023JD040681

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Identifier to cite or link to this item: https://hdl.handle.net/11094/98408

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Title
Observation of Electrical Alignment Signatures in an Isolated Thunderstorm by Dual-Polarized Phased Array Weather Radar and the Relationship With Intracloud Lightning Flash Rate
Creator
CreatorName
Wang, Shuo
NRID
1000040879144 1000040879144
ORCID
0000-0001-8953-3345 0000-0001-8953-3345
researchmap permalink
yuuki_wada yuuki_wada
Scopus Author ID
57188929986 57188929986
CreatorName
Wada, Yuuki
NRID
1000020354441 1000020354441
CreatorName
Hayashi, Syugo
NRID
1000050332961 1000050332961
researchmap permalink
read0077819 read0077819
Scopus Author ID
7005256762 7005256762
CreatorName
Ushio, Tomoo
CreatorName
Chandrasekar, V.
Description
Wang S., Wada Y., Hayashi S., et al. Observation of Electrical Alignment Signatures in an Isolated Thunderstorm by Dual-Polarized Phased Array Weather Radar and the Relationship With Intracloud Lightning Flash Rate. Journal of Geophysical Research: Atmospheres 129, e2023JD040681 (2024); https://doi.org/10.1029/2023jd040681.
Abstract
The electrical alignment signatures of ice crystals in the middle and upper parts of a thunderstorm have a physical connection with the strong electric fields within the cloud. By taking advantage of the high spatio-temporal resolution of an X-band dual-polarized multiparameter phased array radar, this paper employs negative KDP signatures to investigate the variation of electric fields in an isolated thunderstorm within its evolution, and the relationship between the negative KDP signatures and intracloud (IC) lightning activity. The results show that the radar-inferred strong electric fields distributed in a region of about 8.5–10 km during the developing stage, then extended from about 10 km to the cloud top during the mature stage, with an increasing IC lightning flash rate before the end of the mature stage. Subsequently, the electric fields weakened associated with a large amount of IC lightning discharges. The qualitative analysis results indicate that the evolution of the radar-inferred electric fields associated with the upper charge regions is consistent with the electrification process in the isolated thunderstorm, inferred by the IC lighting activity. In addition, there is a tendency for the increased IC lightning rate as the decrease in average composite KDP in the middle and upper layers of the thunderstorm, with a time lag of about 5.5 min between the minimum average composite KDP and the peak IC lightning rate, while a good correlation between the negative KDP volume and the IC lightning flash rate at a lag of approximately 9 min.
Publisher
John Wiley and Sons Inc
Source Title
Journal of Geophysical Research: Atmospheres
Volume (Issue)
129(19)
Page
e2023JD040681
Date of Issued
2024-10-16
Language
English
Handle URL
https://hdl.handle.net/11094/98408
PISSN
2169897X
eISSN
21698996
Relation.isIdenticalTo
DOI (Publisher Version)
https://doi.org/10.1029/2023jd040681
Access Rights
open access
CopyRight
This article is licensed under a Creative Commons Attribution 4.0 International License.
oaire:version
Version of Record
Category
学術雑誌論文 Journal Article