Model Estimation of Sulfate Aerosol Sources Collected at Cape Hedo during an Intensive Campaign in October-November, 2015

資料種別:

論文（リポジトリ）

責任表示:

Itahashi, Syuichi ; Hatakeyama, Shiro ; Shimada, Kojiro ; Tatsuta, Shiori ; Taniguchi, Yuta ; Chan, K. Chak ; Kim, Pyo Yong ; Lin, Neng-Huei ; Takami, Akinori

言語:

英語

出版情報:

Taiwan Association for Aerosol Research, 2017-12

著者名:

Itahashi, Syuichi

Hatakeyama, Shiro

Shimada, Kojiro

Tatsuta, Shiori

Taniguchi, Yuta

Chan, K. Chak

Kim, Pyo Yong

Lin, Neng-Huei

Takami, Akinori

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掲載情報:

Aerosol and Air Quality Research

巻:

17

通号:

12

開始ページ:

3079

終了ページ:

3090

バージョン:

VoR

概要:

An intensive observation campaign at Cape Hedo, Okinawa, Japan was conducted from late October to early November 2015 to investigate the behavior of long-range transported atmospheric pollutants. During this period, sulfate (SO_4^<2->) was the dominant aerosol component. The sources of SO_4^<2-> were estimated by using the air quality model with the tagged tracer method. The main source of high SO_4^<2-> concentration varied … day-to-day. When the westerly wind was dominant (October 27), the main source was anthropogenic SO_2 emissions in China. When the northerly wind prevailed (November 1), the impact of volcanoes in western Japan was significant and the conversion ratio from SO_2 to SO_4^<2-> was lowest, at less than 70%, because of the faster transport. During the latter part of the campaign, the northerly to easterly winds were prominent, and the impacts of Korea, Japan, and ships on SO_4^<2-> observed at Cape Hedo were also clear. When the contributions from Korea, Japan, and ships were the highest (November 4), the conversion ratio was also the highest, at greater than 95% because of long-range transport. The modeled sources of volcanoes and ship emissions corresponded well with the observed coarse-mode SO_4^<2-> and V/Mn ratio, respectively. The mutual evaluation of sources from model and observations enable SO_4^<2-> sources to be estimated with higher confidence. 続きを見る

URL:

http://hdl.handle.net/20.500.12000/0002019364