Sensitivity of Arctic sulfate aerosol and clouds to changes  in future surface seawater dimethylsulfide concentrations

Mahmood, Rashed; von Salzen, Knut; Norman, Ann-Lise; Galí, Martí; Levasseur, Maurice

doi:https://doi.org/10.5194/acp-19-6419-2019

Articles | Volume 19, issue 9

https://doi.org/10.5194/acp-19-6419-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

NETCARE (Network on Aerosols and Climate: Addressing Key Uncertainties...

https://doi.org/10.5194/acp-19-6419-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 19, issue 9

Research article

|

16 May 2019

Research article |

| 16 May 2019

Sensitivity of Arctic sulfate aerosol and clouds to changes in future surface seawater dimethylsulfide concentrations

Rashed Mahmood, Knut von Salzen, Ann-Lise Norman, Martí Galí, and Maurice Levasseur

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https://doi.org/10.5194/acp-19-6419-2019-supplement

Data sets

Climate and aerosol model data R. Mahmood and K. von Salzen http://crd-data-donnees-rdc.ec.gc.ca/CCCMA/pub/2019_Mahmood_ACP_Sensitivity_Arctic_sulfate_clouds_to_DMS_changes/

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Short summary

This study evaluates impacts of surface seawater dimethylsulfide on Arctic sulfate aerosol budget, changes in cloud droplet number concentration (CDNC), and cloud radiative forcing under current and future sea ice conditions using an atmospheric global climate model. In the future, sulfate wet removal efficiency is increased by enhanced precipitation; however, simulated aerosol nucleation rates are higher, which result in an overall increase in CDNC and negative cloud radiative forcing.