Influences of East Asian winter monsoon and El Niño-southern oscillation variability on the Kuroshio intrusion to the South China Sea over the past 60 years

The Kuroshio intrusion (KI) is a northwestward-flowing branch of the Kuroshio Current, which enters the South China Sea (SCS) and regulates its temperature, salinity, and water mass exchanges. However, limited direct observations hinder our understanding of KI's mechanisms and responses to clim...

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Main Authors: Lin, Ke, Han, Tao, Zhang, Yilin, Shen, Chuan-Chou, Lee, Shih-Yu, Wang, Jingyu, Mohtar, Ahmad T., Huang, Kuo-Fang, Chiang, Hong-Wei, Chen, Yue-Gau, Wang, Xianfeng
Other Authors: Asian School of the Environment
Format: Article
Language:English
Published: 2024
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Online Access:https://hdl.handle.net/10356/174886
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Institution: Nanyang Technological University
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spelling sg-ntu-dr.10356-1748862024-04-15T15:31:03Z Influences of East Asian winter monsoon and El Niño-southern oscillation variability on the Kuroshio intrusion to the South China Sea over the past 60 years Lin, Ke Han, Tao Zhang, Yilin Shen, Chuan-Chou Lee, Shih-Yu Wang, Jingyu Mohtar, Ahmad T. Huang, Kuo-Fang Chiang, Hong-Wei Chen, Yue-Gau Wang, Xianfeng Asian School of the Environment National Institute of Education Earth Observatory of Singapore Earth and Environmental Sciences Coral oxygen isotope East Asian winter monsoon The Kuroshio intrusion (KI) is a northwestward-flowing branch of the Kuroshio Current, which enters the South China Sea (SCS) and regulates its temperature, salinity, and water mass exchanges. However, limited direct observations hinder our understanding of KI's mechanisms and responses to climate change. Here, we present a 60-year bi-monthly resolved coral oxygen isotope (δ18Oc) record from Dongsha Atoll, the northern SCS. The dry-season (December–March) δ18Oc record reveals interannual to decadal variabilities of the KI. The impact of the East Asian winter monsoon (EAWM) on Dongsha δ18Oc was more pronounced during the 1970s and 1980s and after the early 2000s, while the influence of the El Niño-Southern Oscillation (ENSO) on Dongsha δ18Oc was higher between the 1980s and 1990s. The Pacific Decadal Oscillation (PDO) may have a relatively minor effect on KI strength or may indirectly modulate KI strength through its influence on ENSO activities. Our Dongsha δ18Oc record highlight the importance of the EAWM, ENSO, and PDO in predicting future KI changes. Ministry of Education (MOE) National Research Foundation (NRF) Published version This work has been possible thanks to the support by the Earth Observatory of Singapore via its funding from the National Research Foundation Singapore (NRF) and the Singapore Ministry of Education (MOE) under the Research Centres of Excellence initiative. The study was also financially supported by the National Science and Technology Council (NSTC), Taiwan, under Grant NSTC111-2116-M-001-014 to Y.-G.C. T.H. acknowledges funding from the Natural Science Foundation of China (NSFC) under Grant 42103083, and from the China Postdoctoral Science Foundation under Grant 2021M693149. X.W. acknowledges the financial support from the Singapore Ministry of Education under Grant MOE-T2EP10122-0006. 2024-04-15T06:20:44Z 2024-04-15T06:20:44Z 2024 Journal Article Lin, K., Han, T., Zhang, Y., Shen, C., Lee, S., Wang, J., Mohtar, A. T., Huang, K., Chiang, H., Chen, Y. & Wang, X. (2024). Influences of East Asian winter monsoon and El Niño-southern oscillation variability on the Kuroshio intrusion to the South China Sea over the past 60 years. Geophysical Research Letters, 51(2). https://dx.doi.org/10.1029/2023GL104155 0094-8276 https://hdl.handle.net/10356/174886 10.1029/2023GL104155 2-s2.0-85182171079 2 51 en MOE-T2EP10122-0006 Geophysical Research Letters © 2024. The Authors. This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivsLicense, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Earth and Environmental Sciences
Coral oxygen isotope
East Asian winter monsoon
spellingShingle Earth and Environmental Sciences
Coral oxygen isotope
East Asian winter monsoon
Lin, Ke
Han, Tao
Zhang, Yilin
Shen, Chuan-Chou
Lee, Shih-Yu
Wang, Jingyu
Mohtar, Ahmad T.
Huang, Kuo-Fang
Chiang, Hong-Wei
Chen, Yue-Gau
Wang, Xianfeng
Influences of East Asian winter monsoon and El Niño-southern oscillation variability on the Kuroshio intrusion to the South China Sea over the past 60 years
description The Kuroshio intrusion (KI) is a northwestward-flowing branch of the Kuroshio Current, which enters the South China Sea (SCS) and regulates its temperature, salinity, and water mass exchanges. However, limited direct observations hinder our understanding of KI's mechanisms and responses to climate change. Here, we present a 60-year bi-monthly resolved coral oxygen isotope (δ18Oc) record from Dongsha Atoll, the northern SCS. The dry-season (December–March) δ18Oc record reveals interannual to decadal variabilities of the KI. The impact of the East Asian winter monsoon (EAWM) on Dongsha δ18Oc was more pronounced during the 1970s and 1980s and after the early 2000s, while the influence of the El Niño-Southern Oscillation (ENSO) on Dongsha δ18Oc was higher between the 1980s and 1990s. The Pacific Decadal Oscillation (PDO) may have a relatively minor effect on KI strength or may indirectly modulate KI strength through its influence on ENSO activities. Our Dongsha δ18Oc record highlight the importance of the EAWM, ENSO, and PDO in predicting future KI changes.
author2 Asian School of the Environment
author_facet Asian School of the Environment
Lin, Ke
Han, Tao
Zhang, Yilin
Shen, Chuan-Chou
Lee, Shih-Yu
Wang, Jingyu
Mohtar, Ahmad T.
Huang, Kuo-Fang
Chiang, Hong-Wei
Chen, Yue-Gau
Wang, Xianfeng
format Article
author Lin, Ke
Han, Tao
Zhang, Yilin
Shen, Chuan-Chou
Lee, Shih-Yu
Wang, Jingyu
Mohtar, Ahmad T.
Huang, Kuo-Fang
Chiang, Hong-Wei
Chen, Yue-Gau
Wang, Xianfeng
author_sort Lin, Ke
title Influences of East Asian winter monsoon and El Niño-southern oscillation variability on the Kuroshio intrusion to the South China Sea over the past 60 years
title_short Influences of East Asian winter monsoon and El Niño-southern oscillation variability on the Kuroshio intrusion to the South China Sea over the past 60 years
title_full Influences of East Asian winter monsoon and El Niño-southern oscillation variability on the Kuroshio intrusion to the South China Sea over the past 60 years
title_fullStr Influences of East Asian winter monsoon and El Niño-southern oscillation variability on the Kuroshio intrusion to the South China Sea over the past 60 years
title_full_unstemmed Influences of East Asian winter monsoon and El Niño-southern oscillation variability on the Kuroshio intrusion to the South China Sea over the past 60 years
title_sort influences of east asian winter monsoon and el niño-southern oscillation variability on the kuroshio intrusion to the south china sea over the past 60 years
publishDate 2024
url https://hdl.handle.net/10356/174886
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