CHEMISTRY OF ANTARCTIC ATMOSPHERIC AEROSOLS

• Main Authors: カナモリ サトル, カナモリ ノブコ, ニシカワ マサタカ, ワタナベ オキツグ, アオキ シュンジ, Satoru KANAMORI, Nobuko KANAMORI, Masataka NISHIKAWA, Okitsugu WATANABE, Shuhji AOKI
• Format: Report
• Language: English
• Published: ABSTRACT 1992
• Subjects: Antarctic; The Antarctic; Syowa Station; Antarc*; 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=3755; http://id.nii.ac.jp/1291/00003755/; https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=3755&item_no=1&attribute_id=18&file_no=1

Inland atmospheric aerosols were sampled by members of JARE-29 (1988-1989) using a modified Andersen type cascade impacter, which consists of 12 impacter stages and a back-up filter and can fractionate aerosol particles down to 0.04 micron. MSA (methane sulfonic acid) and nssSO_4 showed their maximum in size distribution at 0.2-0.3 micron. Their distribution curves run parallel with similar trend and strongly suggest their same or closely related origin. Na has its maximum at 0.6-0.7 micron; its marine origin is indicated by the similar trend of Mg and also by the Mg/Na ratio close to that in seawater. Therefore, MSA and nssSO_4 ratio at the peak of size distribution was at nearly 0.1,which is higher than 0.2 over the Antarctic sea and at Syowa Station, and suggests their supply from a warmer low-latitude sea area.