Author/Authors :
B. Davison، نويسنده , , C. Oʹdowd، نويسنده , , C. N. Hewitt، نويسنده , , M. H. Smith، نويسنده , , R. M. Harrison ، نويسنده , , D. A. Peel، نويسنده , , E. Wolf، نويسنده , , R. Mulvaney، نويسنده , , M. Schwikowski، نويسنده , , U. Baltenspergert، نويسنده ,
Abstract :
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.
