Articles | Volume 19, issue 24
Atmos. Chem. Phys., 19, 15447–15466, 2019
https://doi.org/10.5194/acp-19-15447-2019
Atmos. Chem. Phys., 19, 15447–15466, 2019
https://doi.org/10.5194/acp-19-15447-2019

Research article 17 Dec 2019

Research article | 17 Dec 2019

The sensitivity of Southern Ocean aerosols and cloud microphysics to sea spray and sulfate aerosol production in the HadGEM3-GA7.1 chemistry–climate model

Laura E. Revell et al.

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Latest update: 24 Oct 2021
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Short summary
Aerosols over the Southern Ocean consist primarily of sea salt and sulfate, yet are seasonally biased in our model. We test three sulfate chemistry schemes to investigate DMS oxidation, which forms sulfate aerosol. Simulated cloud droplet number concentrations improve using more complex sulfate chemistry. We also show that a new sea spray aerosol source function, developed from measurements made on a recent Southern Ocean research voyage, improves the model's simulation of aerosol optical depth.
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