Transition of dominant cloud microphysical processes for increasing lightning preceding downbursts in multi-cell convective clouds

Kondo, Makoto; Sato, Yousuke

doi:https://doi.org/10.1016/j.atmosres.2025.108203

Transition of dominant cloud microphysical processes for increasing lightning preceding downbursts in multi-cell convective clouds

Kondo, Makoto; Sato, Yousuke

Atmospheric Research, 2025, 324, 108203

アクセス数:13件（2025-08-14 21:01 集計）

固定URL: https://hdl.handle.net/11094/102207

閲覧可能ファイル

ファイル	フォーマット	利用条件	サイズ	閲覧回数	利用開始日	説明	information
AtmosRes_324	pdf	なし	21.4 MB	16	2025.07.10

Creative Commons : 表示

論文情報

ファイル出力 EndNote Basic出力 Mendeley出力

タイトル	Transition of dominant cloud microphysical processes for increasing lightning preceding downbursts in multi-cell convective clouds
著者	著者名 Kondo, Makoto
著者	NRID 1000010633505 1000010633505 ORCID 0000-0001-7227-1166 0000-0001-7227-1166 researchmap permalink 7000020872 7000020872 Scopus Author ID 30767858100 30767858100 著者名 Sato, Yousuke
キーワード等	Bulk lightning model
	Cloud microphysics
	Downburst
	Graupel
	Numerical simulation
内容	Kondo M., Sato Y.. Transition of dominant cloud microphysical processes for increasing lightning preceding downbursts in multi-cell convective clouds. Atmospheric Research 324, 108203 (2025); https://doi.org/10.1016/j.atmosres.2025.108203.
抄録	Based on the results of numerical simulations, a possible mechanism for the occurrence of a rapid increase in lightning frequency preceding a downburst was investigated according to cloud microphysical processes in mixed-phase areas. To elucidate the mechanism, idealized experiments were conducted targeting multi-cell convective clouds using a meteorological model coupled with a bulk lightning model, which explicitly calculates riming, charge separation via riming electrification, and lightning discharge. The model well reproduced a rapid increase in the lightning flash rate in multi-cell convective clouds approximately 15 min before a downburst. In a convective cell during increasing flash rate, solid hydrometeors were supplied to the convective area and riming electrification occurred actively. In contrast, in a convective cell that caused a downburst, riming occurred actively because of the supply of a large amount of supercooled water from the lower layers. A convective cell suitable for riming electrification or graupel growth by riming occurred when the convection was or was not tilted, respectively. The transition from tilted convection suitable for riming electrification to upright convection suitable for active riming growth is critical for the occurrence of the rapid increase of lightning preceding downbursts.
出版者	Elsevier Ltd
収録物名	Atmospheric Research
巻(号)	324
ページ	108203
刊行年月	2025-05-14
言語	英語
ハンドルURL	https://hdl.handle.net/11094/102207
PISSN	01698095
関連情報 (isIdenticalTo)	DOI (出版社版) https://doi.org/10.1016/j.atmosres.2025.108203
アクセス権	open access
権利情報	This article is licensed under a Creative Commons Attribution 4.0 International License.
出版タイプ	Version of Record
カテゴリ	学術雑誌論文 Journal Article

資源タイプ	学術雑誌論文
ローカル資源タイプ	学術雑誌論文
DCMI資源タイプ	text
DCTERMS.bibliographicCitation	Atmospheric Research. 2025, 324, p. 108203
DC.title	Transition of dominant cloud microphysical processes for increasing lightning preceding downbursts in multi-cell convective clouds
DC.creator	Kondo, Makoto
DC.creator	Sato, Yousuke
DC.publisher	Elsevier Ltd
DC.language' scheme='DCTERMS.RFC1766	英語
DC.type' scheme='DCTERMS.DCMIType	text
DCTERMS.issued' scheme='DCTERMS.W3CDTF	2025-05-14
DC.identifier	https://doi.org/10.1016/j.atmosres.2025.108203
DC.subject	Bulk lightning model
	Cloud microphysics
	Downburst
	Graupel
	Numerical simulation
DC.description	Kondo M., Sato Y.. Transition of dominant cloud microphysical processes for increasing lightning preceding downbursts in multi-cell convective clouds. Atmospheric Research 324, 108203 (2025); https://doi.org/10.1016/j.atmosres.2025.108203.
DCTERMS.abstract	Based on the results of numerical simulations, a possible mechanism for the occurrence of a rapid increase in lightning frequency preceding a downburst was investigated according to cloud microphysical processes in mixed-phase areas. To elucidate the mechanism, idealized experiments were conducted targeting multi-cell convective clouds using a meteorological model coupled with a bulk lightning model, which explicitly calculates riming, charge separation via riming electrification, and lightning discharge. The model well reproduced a rapid increase in the lightning flash rate in multi-cell convective clouds approximately 15 min before a downburst. In a convective cell during increasing flash rate, solid hydrometeors were supplied to the convective area and riming electrification occurred actively. In contrast, in a convective cell that caused a downburst, riming occurred actively because of the supply of a large amount of supercooled water from the lower layers. A convective cell suitable for riming electrification or graupel growth by riming occurred when the convection was or was not tilted, respectively. The transition from tilted convection suitable for riming electrification to upright convection suitable for active riming growth is critical for the occurrence of the rapid increase of lightning preceding downbursts.
DC.rights	This article is licensed under a Creative Commons Attribution 4.0 International License.
DC.format	102207
citation_title	Transition of dominant cloud microphysical processes for increasing lightning preceding downbursts in multi-cell convective clouds
citation_author	Kondo, Makoto
citation_author	Sato, Yousuke
citation_publisher	Elsevier Ltd
citation_language	英語
citation_date	2025-05-14
citation_journal_title	Atmospheric Research
citation_volume	324
citation_firstpage	108203
citation_doi	https://doi.org/10.1016/j.atmosres.2025.108203
citation_public_url	https://hdl.handle.net/11094/102207

Transition of dominant cloud microphysical processes for increasing lightning preceding downbursts in multi-cell convective clouds

閲覧可能ファイル

論文情報

論文詳細を表示