Dimethyl sulfide and its oxidation products in the atmosphere of the Atlantic and Southern Oceans

Dimethyl sulfide, methane sulfonate, non-sea-salt sulfate and sulfur dioxide concentrations in air were obtained during a cruise between the U.K. and the Antarctic during the period October 1992–January 1993. In equatorial regions (30°N to 30°S) the atmospheric DMS concentration ranged from 3 to 46...

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Bibliographic Details
Published in:Atmospheric Environment
Main Authors: Davison, B., O'dowd, C., Hewitt, C.N., Smith, M.H., Harrison, R.M., Peel, D.A., Wolff, E., Mulvaney, R., Schwikowski, M., Baltenspergert, U.
Format: Article in Journal/Newspaper
Language:unknown
Published: Elsevier 1996
Subjects:
Marine Sciences
Chemistry
Antarctic
The Antarctic
Antarctic Peninsula
Weddell Sea
Weddell
Antarc*
Online Access:http://nora.nerc.ac.uk/id/eprint/515022/
https://doi.org/10.1016/1352-2310(95)00428-9
Description
Summary:Dimethyl sulfide, methane sulfonate, non-sea-salt sulfate and sulfur dioxide concentrations in air were obtained during a cruise between the U.K. and the Antarctic during the period October 1992–January 1993. In equatorial regions (30°N to 30°S) the atmospheric DMS concentration ranged from 3 to 46 ng (S)m−3 with an average of 18 ng(S)m−3. In the polar waters and regions south of the Falkland Islands concentrations from 3 to 714ng(S)m−3 were observed with a mean concentration of 73ng(S)m−3. Methane sulfonate concentrations were also enhanced in the vicinity of the Antarctic Peninsula and in the Weddell Sea. A simple model of DMS oxidation was used to estimate the ocean to atmosphere flux rate, and this was found to be within the range of previous estimates, with a mean value of 1011 ng(S) m−2 h−1.

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