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°N, 129°E). A monthly resolved, 106 year δ18O 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 δ18O 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 δ18O suggested that recent and future global warming may lead to a more frequent and/or stronger teleconnection between EASM and PDO.
| Original language | English |
|---|---|
| Pages (from-to) | 3609-3614 |
| Number of pages | 6 |
| Journal | Geophysical Research Letters |
| Volume | 41 |
| Issue number | 10 |
| DOIs | |
| Publication status | Published - May 28 2014 |
| Externally published | Yes |
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All Science Journal Classification (ASJC) codes
- Geophysics
- Earth and Planetary Sciences(all)
Cite this
A 106 year monthly coral record reveals that the East Asian summer monsoon modulates winter PDO variability. / Watanabe, Tsuyoshi; Kawamura, Takashi; Yamazaki, Atsuko; Murayama, Masafumi; Yamano, Hiroya.
In: Geophysical Research Letters, Vol. 41, No. 10, 28.05.2014, p. 3609-3614.Research output: Contribution to journal › Article
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TY - JOUR
T1 - A 106 year monthly coral record reveals that the East Asian summer monsoon modulates winter PDO variability
AU - Watanabe, Tsuyoshi
AU - Kawamura, Takashi
AU - Yamazaki, Atsuko
AU - Murayama, Masafumi
AU - Yamano, Hiroya
PY - 2014/5/28
Y1 - 2014/5/28
N2 - 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°N, 129°E). A monthly resolved, 106 year δ18O 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 δ18O 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 δ18O suggested that recent and future global warming may lead to a more frequent and/or stronger teleconnection between EASM and PDO.
AB - 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°N, 129°E). A monthly resolved, 106 year δ18O 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 δ18O 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 δ18O suggested that recent and future global warming may lead to a more frequent and/or stronger teleconnection between EASM and PDO.
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U2 - 10.1002/2014GL060037
DO - 10.1002/2014GL060037
M3 - Article
AN - SCOPUS:84901382905
VL - 41
SP - 3609
EP - 3614
JO - Geophysical Research Letters
JF - Geophysical Research Letters
SN - 0094-8276
IS - 10
ER -