Articles | Volume 26, issue 15
https://doi.org/10.5194/acp-26-11171-2026
https://doi.org/10.5194/acp-26-11171-2026
Research article
 | 
11 Aug 2026
Research article |  | 11 Aug 2026

Impact of black carbon on daytime valley and slope winds in idealised simulations

Johannes Mikkola, Victoria A. Sinclair, Giancarlo Ciarelli, Alexander Gohm, and Federico Bianchi

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Peer review completion

AR – Author's response | RR – Referee report | ED – Editor decision | EF – Editorial file upload
AR by Johannes Mikkola on behalf of the Authors (29 Apr 2026)  Author's response 
EF by Katja Gänger (30 Apr 2026)  Manuscript   Author's tracked changes 
ED: Referee Nomination & Report Request started (11 May 2026) by Peter Haynes
RR by Anonymous Referee #2 (18 May 2026)
RR by Julian Quimbayo-Duarte (28 May 2026)
ED: Publish subject to minor revisions (review by editor) (08 Jun 2026) by Peter Haynes
AR by Johannes Mikkola on behalf of the Authors (09 Jun 2026)  Author's response   Author's tracked changes   Manuscript 
ED: Publish as is (25 Jun 2026) by Peter Haynes
AR by Johannes Mikkola on behalf of the Authors (26 Jun 2026)
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Short summary
This study investigates the effect of black carbon on the diurnal winds within idealised mountain valleys using numerical simulations. Absorption of solar radiation by black carbon weakens the up-slope winds, but unexpectedly strengthens the afternoon up-valley winds. This happens because weaker up-slope winds remove less momentum from the valley, allowing the up-valley winds to become stronger even though the overall driving force is reduced by the absorption.
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