Articles | Volume 23, issue 19
https://doi.org/10.5194/acp-23-12589-2023
https://doi.org/10.5194/acp-23-12589-2023
Research article
 | 
10 Oct 2023
Research article |  | 10 Oct 2023

Occurrence frequency of subcritical Richardson numbers assessed by global high-resolution radiosonde and ERA5 reanalysis

Jia Shao, Jian Zhang, Wuke Wang, Shaodong Zhang, Tao Yu, and Wenjun Dong

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Peer review completion

AR: Author's response | RR: Referee report | ED: Editor decision | EF: Editorial file upload
AR by Jian Zhang on behalf of the Authors (01 Jun 2023)  Author's response   Author's tracked changes   Manuscript 
ED: Referee Nomination & Report Request started (19 Jun 2023) by Aurélien Podglajen
RR by Anonymous Referee #1 (06 Jul 2023)
RR by Anonymous Referee #2 (20 Jul 2023)
ED: Publish subject to minor revisions (review by editor) (04 Aug 2023) by Aurélien Podglajen
AR by Jian Zhang on behalf of the Authors (13 Aug 2023)  Author's response   Author's tracked changes   Manuscript 
ED: Publish subject to minor revisions (review by editor) (22 Aug 2023) by Aurélien Podglajen
AR by Jian Zhang on behalf of the Authors (30 Aug 2023)  Author's response   Author's tracked changes   Manuscript 
ED: Publish as is (31 Aug 2023) by Aurélien Podglajen
AR by Jian Zhang on behalf of the Authors (04 Sep 2023)
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Short summary
Kelvin–Helmholtz instability (KHI) is indicated by the critical value of the Richardson (Ri) number, which is usually predicted to be 1/4. Compared to high-resolution radiosondes, the threshold value of Ri could be approximated as 1 rather than 1/4 when using ERA5-based Ri as a proxy for KHI. The occurrence frequency of subcritical Ri exhibits significant seasonal cycles over all climate zones and is closely associated with gravity waves and background flows.
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