SPATIAL DISTRIBUTION OF AEROSOL-STATE METHANESULFONIC ACID OVER THE ANTARCTIC OCEAN

• Main Authors: Seizi KOGA, Takashi YAMANOUCHI, Fumihiko NISHIO, Akira ONO, Yasunobu IWASAKA, Sadao KAWAGUCHI
• Format: Report
• Language: English
• Published: Water Research Institute, Nagoya University/National Institute of Polar Research/National Institute of Polar Research/Water Research Institute, Nagoya University/Water Research Institute, Nagoya University/National Institute of Polar Research 1989
• Subjects: Antarctic; Antarctic Ocean; Austral; Syowa Station; The Antarctic; Antarc*; Antarctica; Polar meteorology and glaciology; Proceedings of the NIPR Symposium on Polar Meteorology and Glaciology
• Online Access: https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=3587; http://id.nii.ac.jp/1291/00003587/; https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=3587&item_no=1&attribute_id=18&file_no=1

During the austral summer of 15 November 1986 to 3 March 1987,bulk aerosol sampling by Andersen high-volume sampler was carried out on board the icebreaker SHIRASE in her relief voyage of the 28th Japanese Antarctic Research Expedition to Syowa Station, Antarctica. The aerosol samples were collected on Toyo Roshi GB100R as impaction surfaces at air flow rates of about 566 l/min. These filters were changed at intervals of four days. The collected samples were analyzed by an ion chromatograph (column : TSK gel IC-Anion-PW) to examine the concentrations of methanesulfonic acid (MSA : CH_3SO_3H) as an oxidation product of dimethyl sulfide (DMS : CH_3SCH_3) in the formation of sulfuric acid aerosols. Methanesulfonate (CH_3SO_3^-) concentrations ranged from the value beyond the detection limit (10 ppb) to 0.067