WIT Press


Chemical Impact Of Aerosols And Sea Spray In The Cloudy Marine Boundary Layer

Price

Free (open access)

Paper DOI

10.2495/AIR960321

Volume

14

Pages

7

Published

1996

Size

608 kb

Author(s)

C. Mari, A. Fassi-Fihri, K. Suhre & R. Rosset

Abstract

DMS(dimethylsulfide) oxidation in the marine boundary layer is considered as a major issue in climate feedback mechanisms. A numerical model has been developed which simulates the evolution of DMS, 502 and sulfuric acid together with Aitken nuclei and CCN(Cloud Condensation Nuclei). Particular attention has been given to the parameterization of SO^ and aerosol sources and sinks in the presence of stratiform clouds, drizzle and sea spray. Different scenarios have been defined and sensitivity studies performed, resulting in contrasted typical aerosol concentrations regimes in the marine boundary layer. 1 Introduction Tropospheric aerosols play a major role in the Earth's climate systeme due to their direct and indirect interactio

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