A 340 year record of biogenic sulphur from the Weddell Sea area, Antarctica

• Main Authors: Pasteur, EC, Mulvaney, R, Peel, DA, Saltzman, ES, Whung, PY
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: eScholarship, University of California 1995
• Subjects: Meteorology & Atmospheric Sciences; Atmospheric Sciences; Geophysics; Physical Geography and Environmental Geoscience; Laurie; Laurie Island; Scotia Bay; Weddell; Weddell Sea; Antarc*; Antarctica; Sea ice
• Online Access: https://escholarship.org/uc/item/242725mk

The high MSA (methanesulphonic acid) concentration reflects the proximity of the Weddell Sea, believed to be a region of high marine phytoplankton production. The overall mean nss-SO2-4 (non sea salt sulphate) concentration is about 66% of the total sulphate deposited in snowfall. Low-frequency variations of MSA and ozygen-isotope signals correlate closely, indicating that they may be modulated by similar atmospheric processes. Positive correlations are observed between the oxygen-isotope signature and both MSA and nss SO2-4. A small negative correlation can be seen between both species and the annual duration of sea ice at Scotia Bay, Laurie Island in the South Orkneys, since 1902. -from Authors