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    Modelling the contribution of sea salt and dimethyl sulfide derived aerosol to marine ccn

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    Date
    2002-01-14
    Author
    Yoon, Y. J.
    Brimblecombe, P.
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    Cited 39 times in Scopus (view citations)
    
    Recommended Citation
    Yoon, Y. J. Brimblecombe, P. (2002). Modelling the contribution of sea salt and dimethyl sulfide derived aerosol to marine ccn. Atmospheric Chemistry and Physics 2 , 17-30
    Published Version
    https://www.atmos-chem-phys.net/2/17/2002/acp-2-17-2002.pdf
    Abstract
    The concentration of cloud condensation nuclei (CCN) in the marine boundary layer (MBL) was estimated from dimethyl sulfide (DMS) flux, sea salt (SS) emission, and aerosols entrained from the free troposphere (FT). Only under clean air conditions, did the nucleation of DMS derived sulfur (DMS CCN) contribute significantly to the MBL CCN. The accommodation coefficient for sulfuric acid mass transfer was found to be a very important parameter in the modeling the contribution of DMS to MBL CCN. The relationship between seawater DMS and MBL CCN was found to be non-linear mainly due to the transfer processes of sulfuric acid onto aerosols. In addition, sea salt derived CCN (SS CCN) and entrained aerosol from the FT (FT CCN) affected the MBL CCN directly, by supplying CCN, and indirectly, by behaving as an efficient sink for sulfuric acid. The SS CCN explained more than 50% of the total predicted MBL CCN when wind speeds were moderate and high. Sea salt and FT aerosol may often be more efficient sources of MBL CCN than DMS.
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    http://hdl.handle.net/10379/10002
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