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A 106 year monthly coral record reveals that the East Asian summer monsoon modulates winter PDO variability
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Title: | A 106 year monthly coral record reveals that the East Asian summer monsoon modulates winter PDO variability |
Authors: | Watanabe, Tsuyoshi Browse this author →KAKEN DB | Kawamura, Takashi Browse this author | Yamazaki, Atsuko Browse this author | Murayama, Masafumi Browse this author | Yamano, Hiroya Browse this author |
Keywords: | PDO | Asian monsoon | coral | oxygen isotopes |
Issue Date: | 28-May-2014 |
Publisher: | American Geophysical Union |
Journal Title: | Geophysical Research Letters |
Volume: | 41 |
Issue: | 10 |
Start Page: | 3609 |
End Page: | 3614 |
Publisher DOI: | 10.1002/2014GL060037 |
Abstract: | The Pacific Decadal Oscillation (PDO) is a dominant climate mode in the Pacific Ocean and thought to be related to seasonal to decadal changes in sea surface conditions. Colonies of long-living Porites coral, widely used to reconstruct monthly to century-scale tropical sea surface temperature and sea surface salinity records, were discovered near Koshiki Island, Japan (31 degrees N, 129 degrees E). A monthly resolved, 106 year 18O record revealed that distinct decadal-scale variability was significantly correlated with the PDO index. Our comparison showed 1 to 3 years lead-lag correlation of summer coral 18O with the winter PDO index, suggesting that the East Asian summer monsoon (EASM) may act as the driving force of winter PDO variability over the last 100 years. Cross-spectral analysis between the winter PDO index and summer coral 18O suggested that recent and future global warming may lead to a more frequent and/or stronger teleconnection between EASM and PDO. |
Rights: | http://creativecommons.org/licenses/by-nc-nd/3.0/ |
Type: | article |
URI: | http://hdl.handle.net/2115/57491 |
Appears in Collections: | 理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 渡邊 剛
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