High Flux of Small Sulfate Aerosols During the 1970s Reconstructed From the SE-Dome Ice Core in Greenland

Iizuka, Y.; Uemura, R.; Matsui, H.; Oshima, N.; Kawakami, K.; Hattori, S.; Ohno, H.; Matoba, S.

High Flux of Small Sulfate Aerosols During the 1970s Reconstructed From the SE-Dome Ice Core in Greenland

Iizuka, Y.; Uemura, R.; Matsui, H. et al.

Journal of geophysical research atmospheres, 2022, 127(17), e2022JD036880

Permalink : https://hdl.handle.net/2115/86854

このアイテムのアクセス数:491件（2026-01-18 10:41 集計）

閲覧可能ファイル

ファイル	フォーマット	サイズ	閲覧回数	説明
JGR Atmospheres - 2022 - Iizuka - High Flux	pdf	1.04 MB	290

論文情報

ファイル出力 EndNote Basic出力 Mendeley出力

アクセス権	open access
URI	https://hdl.handle.net/2115/86854
タイトル	High Flux of Small Sulfate Aerosols During the 1970s Reconstructed From the SE-Dome Ice Core in Greenland
著者	Iizuka, Y. ; Uemura, R. ; Matsui, H. ; Oshima, N. ; Kawakami, K. ; Hattori, S. ; Ohno, H. ; Matoba, S.
e-Rad_Researcher 40370043 著者名 Iizuka, Y.
e-Rad_Researcher 00580143 著者名 Uemura, R.
e-Rad_Researcher 50549508 著者名 Matsui, H.
e-Rad_Researcher 50590064 著者名 Oshima, N.
著者名 Kawakami, K.
e-Rad_Researcher 70700152 著者名 Hattori, S.
著者名 Ohno, H.
e-Rad_Researcher 30391163 著者名 Matoba, S.
言語	英語
キーワード	ice core
	aerosol
	Greenland
	anthropogenic sulfate maximum
発行日	2022-09-16
出版者	American Geophysical Union
収録物名	Journal of geophysical research atmospheres
巻(号)	127(17)
ページ	e2022JD036880
抄録	Aerosols significantly affect Earth's radiation budget, thus influencing global climate. In the Arctic, sulfate aerosols are thought to have reduced the warming during the twentieth century. However, trends in past sulfate aerosols are poorly known, especially the aerosol sizes and compositions. Here, we analyze a high-resolution ice core from southeastern Greenland, comparing the seasonal deposition flux of large sulfate salt particles and small sulfur compounds, including non-neutralized sulfuric acid, between the anthropogenic sulfate maximum (1973-1975) and after sulfur emissions control (2010-2012). Between these periods, we find that the large-diameter (>0.4 mu m) flux remains roughly unchanged, yet the small-diameter (<0.4 mu m) aerosol flux significantly decreases. The results indicate that small sulfates were efficiently activated as cloud condensation nuclei during the 1970s, and thus likely increased cloud albedo, offsetting the warming.
資源タイプ	学術雑誌論文
出版タイプ	Version of Record
権利情報	Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
PISSN	2169-897X
関連情報 (isSupplementedBy)	HDL https://hdl.handle.net/2115/86374 Title [Dataset] High flux of small sulfate aerosols during the 1970s reconstructed from the SE-Dome ice core in Greenland
関連情報 (isIdenticalTo)	出版社版DOI https://doi.org/10.1029/2022JD036880