Dc. Thornton et Ar. Bandy, SULFUR-DIOXIDE AND DIMETHYL SULFIDE IN THE CENTRAL PACIFIC TROPOSPHERE, Journal of atmospheric chemistry, 17(1), 1993, pp. 1-13
Boundary-layer and free-troposphere measurements of sulfur dioxide, di
methyl sulfide, and carbon disulfide were made during transits of the
central and southern Pacific Ocean between Hawaii and Australia. Sulfu
r dioxide was generally less than 100 pptv and highly variable with no
correlation with respect to geographic location or altitude. Dimethyl
sulfide in the boundary layer had a concentration range of <10 to 200
pptv. Highest concentrations of DMS were in the equatorial region of
the southern hemisphere although the concentrations were dependent on
location and meteorological regime. In the region of the Fiji Islands
several boundary layer samples had SO2, DMS, and CS2. In 1989, additio
nal SO2 measurements were made between Hawaii and the equator and to t
he west of Hawaii downwind of the Kilauea volcano plumes.