In January and February 1994, measurements of dimethylsulfide (DMS) in air and seawater were conducted at Palmer Station, Antarctica, during project SCATE (Sulfur Chemistry in the Antarctica Troposphere Experiment). Corresponding values ranged between 6 and 595 pptv (median: 94 pptv) and 0.7 and 3.7 nM (median: 2 nM), respectively. Atmospheric DMS levels were significantly enhanced during a storm episode in connection with large-scale low-pressure systems passing through the study area. DMS sea-to-air fluxes ranged between 0.03 and 19 (median: 1.1) μmol m-2 d-1 based on seawater DMS and wind speed measurements. The atmospheric DMS lifetime is estimated to be 9 days based on a 24-hour averaged OH concentration of 1.1¿105 cm-3. Atmospheric dimethylsulfoxide (DMSO) and dimethylsulfone (DMSO2) mixing ratios varied mostly between <0.2 and 15 pptv. These variations consisted of many short-term spikes which may be explained by downward mixing of these compounds from the free troposphere <Davis et al., this issue>. The DMSO photochemical lifetime with respect to the 24-hour average OH concentration is approximately 25 hours in the coastal Antarctic troposphere in summer. However, present calculations show that the dominant sink of both DMSO and DMSO2 could be surface loss, yielding atmospheric lifetimes of a few hours for both compounds Davis et al., this issue>. A good correlation was found between DMSO and DMSO2. Aerosol MSA and excess sulfate concentrations also showed a good correlation, with a slope of 0.73. However, DMS was not correlated with any of its measured oxidation products, probably because of its long atmospheric residence time over Antarctica. ¿ 1998 American Geophysical Union