Seasonal variation and volatility of ultra-fine particles in coastal Antarctic troposphere

The Size distribution and volatility of ultrafine aerosol particles were measured at Syowa Station during the 46-47 Japanese Antarctic Research Expeditions. During the summer, most of the ultrafine particles were volatile particles, which were composed of H_2SO_4, CH_3SO_3H and sulfates bi-sulfates....

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Bibliographic Details
Main Authors: Keiichiro Hara, Kazuo Osada, Chiharu Nishita-Hara, Masanori Yabuki, Masahiko Hayashi, Takashi Yamanouchi, Makoto Wada, Masataka Shiobara
Format: Article in Journal/Newspaper
Language:English
Japanese
Published: National Institute of Polar Research 2010
Subjects:
Geography (General)
G1-922
Antarctic
The Antarctic
Syowa Station
Antarc*
Sea ice
Online Access:https://doi.org/10.15094/00009573
https://doaj.org/article/059ccf0fadf544bf895d8cf5ada67309
Description
Summary:The Size distribution and volatility of ultrafine aerosol particles were measured at Syowa Station during the 46-47 Japanese Antarctic Research Expeditions. During the summer, most of the ultrafine particles were volatile particles, which were composed of H_2SO_4, CH_3SO_3H and sulfates bi-sulfates. The abundance of non-volatile particles was ～ 20% during the summer, increasing to>90% in winter-spring. Non-volatile particles in winter were dominantly sea-salt particles. Some ultrafine sea-salt particles might be released from sea-ice. When air mass was transported from the free troposphere over the Antarctic continent, the abundance of non-volatile particles dropped to<30% even in winter.

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