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https://hdl.handle.net/20.500.14094/90006183
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2024-05-04
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90006183
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open access
出版タイプ
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タイトル
Intensified East Asian winter monsoon during the last geomagnetic reversal transition
著者
Ueno, Yusuke ; Hyodo, Masayuki ; Yang, Tianshui ; Katoh, Shigehiro
著者名
Ueno, Yusuke
著者ID
A1191
研究者ID
1000060183919
KUID
https://kuid-rm-web.ofc.kobe-u.ac.jp/search/detail?systemId=1119f461c57bfdea520e17560c007669
著者名
Hyodo, Masayuki
兵頭, 政幸
ヒョウドウ, マサユキ
所属機関名
内海域環境教育研究センター
著者名
Yang, Tianshui
著者名
Katoh, Shigehiro
収録物名
Scientific Reports
巻(号)
9
ページ
9389-9389
出版者
Nature Research
刊行日
2019-06-28
公開日
2019-07-16
抄録
The strength of Earth's magnetic dipole field controls galactic cosmic ray (GCR) flux, and GCR-induced cloud formation can affect climate. Here, we provide the first evidence of the GCR-induced cloud effect on the East-Asian monsoon during the last geomagnetic reversal transition. Bicentennial-resolution monsoon records from the Chinese Loess Plateau revealed that the summer monsoon (SM) was affected by millennial-scale climate events that occurred before and after the reversal, and that the winter monsoon (WM) intensified independently of SM variations; dust accumulation rates increased, coinciding with a cooling event in Osaka Bay. The WM intensification event lasted about 5000 years across an SM peak, during which the Earth's magnetic dipole field weakened to <25% of its present strength and the GCR flux increased by more than 50%. Thus, the WM intensification likely resulted from the increased land-ocean temperature gradient originating with the strong Siberian High that resulted from the umbrella effect of increased low-cloud cover through an increase in GCR flux.
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内海域環境教育研究センター
学術雑誌論文
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© The Author(s) 2019.
This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
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journal article
言語
English (英語)
eISSN
2045-2322
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関連情報
DOI
https://doi.org/10.1038/s41598-019-45466-8
URI
http://www.kobe-u.ac.jp/research_at_kobe/NEWS/news/2019_06_28_01.html
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