Articles | Volume 19, issue 3
Atmos. Chem. Phys., 19, 1623–1647, 2019
https://doi.org/10.5194/acp-19-1623-2019

Special issue: Results of the project "Dynamics–aerosol–chemistry–cloud...

Atmos. Chem. Phys., 19, 1623–1647, 2019
https://doi.org/10.5194/acp-19-1623-2019

Research article 07 Feb 2019

Research article | 07 Feb 2019

The role of low-level clouds in the West African monsoon system

Anke Kniffka et al.

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Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision
AR by Anke Kniffka on behalf of the Authors (15 Dec 2018)  Author's response    Manuscript
ED: Referee Nomination & Report Request started (29 Dec 2018) by Ademe Mekonnen
RR by Raphaela Vogel (08 Jan 2019)
RR by Anonymous Referee #1 (14 Jan 2019)
ED: Publish subject to technical corrections (15 Jan 2019) by Ademe Mekonnen
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Short summary
The role of low-level clouds in the southern West Africa (SWA) energy balance and the West African monsoon system is assessed via targeted sensitivity studies with the NWP model ICON. We show for the first time that rainfall over SWA depends logarithmically on the optical thickness of low clouds, as these control the diurnal evolution of the planetary boundary layer, vertical stability and finally convection. Small variations in clouds or aerosol have a substantial impact on precipitation.
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