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Late Holocene Orbital Forcing and Solar Activity on the Kuroshio Current of Subtropical North Pacific at Different Timescales

文献类型：期刊论文

作者Ding, Xue7,8; Hu, Bangqi7,8; Li, Jun6; Zhao, Jingtao7,8; Yao, Yue5; Li, Qing7,8; Lan, Jianghu3,4; Zheng, Xufeng2; Yi, Liang1
刊名FRONTIERS IN EARTH SCIENCE
出版日期2022-03-14
卷号10页码:11
关键词Kuroshio Current Okinawa Trough solar forcing ocean-atmosphere coupling Late Holocene westerly
DOI10.3389/feart.2022.845228
通讯作者Hu, Bangqi(bangqihu@gmail.com)
英文摘要The North Pacific subtropical gyre (NPSTG) redistributes heat and moisture between low and high latitudes and plays a key role in modulating the global climate change and ecosystem. Recent evidence suggests intensification and poleward shift of the subtropical gyres over the last decades due to global warming, but insufficient observations have hampered insight into the integrated effects of ocean-atmosphere interactions at longer timescales. Here we present the first high-resolution (similar to 12 years) grain-size record from Core CF1 in the Okinawa Trough, western subtropical North Pacific, to reconstruct the evolution of the western boundary Kuroshio Current (KC) of NPSTG during the Late Holocene. Our results indicate the KC slow-down during 4.6-2.0 ka, followed by quick enhancement after 2.0 ka, with centennial-scale variabilities (500-700 years) superimposed on the long-term trend. Over millennial timescales, gradually increased pole-to-equator thermal gradient, due to orbital forcing mechanisms, resulted in long-term enhanced KC, whereas solar activity triggered phase changes in the tropical Pacific mean state and controlled KC anomalies on centennial timescales. We suggest that both forcing mechanisms resulted in ocean-atmosphere feedback provoking concurrent changes in mid-latitude westerly and subtropical easterly winds over the North Pacific, alternating their dominance as source regions causing the dynamic changes of KC at different timescales. Our findings offer insight into the role of external forcing mechanisms in the NPSTG changes before the Anthropocene, which have profound implications for the deeper understanding of changes in ocean gyres under global warming scenarios.
WOS关键词WESTERN BOUNDARY CURRENTS ; MIDDLE OKINAWA TROUGH ; CLIMATE-CHANGE ; SEDIMENT PROVENANCES ; VARIABILITY ; OSCILLATION ; CHINA ; OCEAN ; INTENSIFICATION ; CONSTRAINTS
资助项目National Natural Science Foundation of China[41976192] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB40000000] ; National Key Research and Development Program of China[2018YFC0310001] ; Shandong Province Natural Science Foundation[ZR202103010094] ; Project of China Geological Survey[DD20191010]
WOS研究方向Geology
语种英语
出版者FRONTIERS MEDIA SA
WOS记录号WOS:000777098000001
资助机构National Natural Science Foundation of China ; Strategic Priority Research Program of Chinese Academy of Sciences ; National Key Research and Development Program of China ; Shandong Province Natural Science Foundation ; Project of China Geological Survey
源URL[http://ir.ieecas.cn/handle/361006/17649]  
专题地球环境研究所_现代环境研究室
通讯作者Hu, Bangqi
作者单位1.Tongji Univ, State Key Lab Marine Geol, Shanghai, Peoples R China
2.Hainan Univ, State Key Lab Marine Resource Utilizat South Chin, Haikou, Peoples R China
3.Chinese Acad Sci, Ctr Excellence Quaternary Sci & GlobalChange, Xian, Peoples R China
4.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian, Peoples R China
5.Shandong Univ, Inst Marine Scienceand Technol, Qingdao, Peoples R China
6.Wuhan Geol Survey Ctr, Wuhan, Peoples R China
7.Pilot Natl Lab forMarine Sci & Technol, Lab Marine Mineral Resources, Qingdao, Peoples R China
8.Qingdao Inst Marine Geol, Qingdao, Peoples R China
推荐引用方式
GB/T 7714		 Ding, Xue,Hu, Bangqi,Li, Jun,et al. Late Holocene Orbital Forcing and Solar Activity on the Kuroshio Current of Subtropical North Pacific at Different Timescales[J]. FRONTIERS IN EARTH SCIENCE,2022,10:11.
APA Ding, Xue.,Hu, Bangqi.,Li, Jun.,Zhao, Jingtao.,Yao, Yue.,...&Yi, Liang.(2022).Late Holocene Orbital Forcing and Solar Activity on the Kuroshio Current of Subtropical North Pacific at Different Timescales.FRONTIERS IN EARTH SCIENCE,10,11.
MLA Ding, Xue,et al."Late Holocene Orbital Forcing and Solar Activity on the Kuroshio Current of Subtropical North Pacific at Different Timescales".FRONTIERS IN EARTH SCIENCE 10(2022):11.

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来源：地球环境研究所

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