CHEMISTRY OF ANTARCTIC ATMOSPHERIC AEROSOLS

元データ 国立極地研究所

概要

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.

著者

Watanabe Okitsugu National Institute of Polar Research, Research Organization of Information and Systems
Watanabe Okitsugu National Institute Of Polar Research
Kawaguchi Sadao Nagaoka National College Of Technology
Shimohara Kimiko Kitami Institute of Technology
Aoki Shuhji Center for Atmospheric and Oceanic Studies, Graduate School of Science, Tohoku University
AOKI Shuhji National Institute of Polar Research
Kanamori Satoru Water Research Institute, Nagoya University
Kanamori Nobuko Water Research Institute, Nagoya University
Nishikawa Masataka National Institute for Environmental Studies
Kanamori Satoru Institute For Hydrospheric And Atmospheric Sciences Nagoya University
Kanamori Nobuko Atmospheric And Hydrospheric Research Institute Nagoya University
Kanamori Satoru Water Research Institute Nagoya University
Kanamori Nobuko National Institute Of Polar Research
Aoki S Center For Atmospheric And Oceanic Studies Graduate School Of Science Tohoku University
Aoki Shuji Center For Atmospheric And Oceanic Studies Graduate School Of Sci. Tohoku Univ.
Aoki Shuhji Faculty Of Science Tohoku University
Aoki Syuji National Institute Of Polar Research
Kanamori Satoru National Institute of Polar Research
Satow Kazuhide Nagoya Technical College
Shinbori K Hokkaido Univ. Sapporo
Nishikawa Masataka National Institute For Environment Studies
Kanamori Nobuko Water Research Institute Nagoya Univerisity

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