Articles | Volume 17, issue 5
Atmos. Chem. Phys., 17, 3339–3356, 2017
https://doi.org/10.5194/acp-17-3339-2017

Special issue: The Geoengineering Model Intercomparison Project (GeoMIP):...

Atmos. Chem. Phys., 17, 3339–3356, 2017
https://doi.org/10.5194/acp-17-3339-2017

Research article 08 Mar 2017

Research article | 08 Mar 2017

Shortwave radiative forcing, rapid adjustment, and feedback to the surface by sulfate geoengineering: analysis of the Geoengineering Model Intercomparison Project G4 scenario

Hiroki Kashimura 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 Hiroki Kashimura on behalf of the Authors (28 Nov 2016)  Author's response    Manuscript
ED: Referee Nomination & Report Request started (06 Dec 2016) by Ulrike Lohmann
RR by Aaron Donohoe (20 Dec 2016)
RR by Anonymous Referee #3 (16 Jan 2017)
ED: Reconsider after minor revisions (Editor review) (16 Jan 2017) by Ulrike Lohmann
AR by Hiroki Kashimura on behalf of the Authors (26 Jan 2017)  Author's response    Manuscript
ED: Reconsider after minor revisions (Editor review) (03 Feb 2017) by Ulrike Lohmann
AR by Hiroki Kashimura on behalf of the Authors (09 Feb 2017)  Author's response    Manuscript
ED: Publish as is (10 Feb 2017) by Ulrike Lohmann
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Short summary
This study analyses shortwave radiation (SW) in the G4 experiment of the Geoengineering Model Intercomparison Project. G4 involves stratospheric injection of 5 Tg yr−1 of SO2 against the RCP4.5 scenario. The global mean forcing of the sulphate geoengineering has an inter-model variablity of −3.6 to −1.6 W m−2, implying a high uncertainty in modelled processes of sulfate aerosols. Changes in water vapour and cloud amounts due to the SO2 injection weaken the forcing at the surface by around 50 %.
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