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Enhanced and southward North Pacific subtropical gyre circulation following the intensification of Northern Hemisphere Glaciation

文献类型：期刊论文

作者Tang, Luyao7,8; Chang, Fengming6,7,8; Wang, Jia4,5; Qian, Fang2,3; Zhang, Junru7,8; Li, Tiegang1,6
刊名GLOBAL AND PLANETARY CHANGE
出版日期2025-10-01
卷号253页码:13
关键词Intensification of Northern Hemisphere Glaciation North Pacific Subtropical Gyre circulation Kuroshio Current Late Pliocene Northwest Pacific
ISSN号0921-8181
DOI10.1016/j.gloplacha.2025.104953
通讯作者Chang, Fengming(chfm@qdio.ac.cn) ; Li, Tiegang(tgli@fio.org.cn)
英文摘要The North Pacific Subtropical Gyre (NPSG) is critical for ocean heat distribution and climate regulation in the North Pacific and beyond. However, its variations across major climate transitions over long timescales remain poorly constrained. In this study, we reconstruct sea surface temperature (SST) and salinity (SSS) in the mid-latitude Northwest Pacific from 3.8 to 1.8 Ma using planktonic foraminiferal delta O-18 and Mg/Ca ratios from Deep Sea Drilling Project Site 296 and integrate paleorecords from the Kuroshio Current Extension (KCE), California Current (CC), and Alaska Current (AC) regions to investigate NPSG variability during the Late Pliocene Northern Hemisphere Glaciation (NHG). Pronounced increases in SST and SSS at Site 296 after the intensification of the NHG (iNHG) at 2.7 Ma reveal a strengthened Kuroshio Current with enhanced transport of warm saline waters. The concurrent SST increases in the CC and AC areas after similar to 2.7 Ma indicate the intensification of all three NPSG boundary currents following the iNHG, resulting in a more robust NPSG circulation. Meanwhile, SSTs in the KCE and northern CC regions decreased considerably, implying southward displacement of the northern boundary of the NPSG. The post-iNHG enhancement and southward shift of the NPSG may have resulted from a more La Ni & ntilde;a-like state in the equatorial Pacific and atmospheric circulation reorganization associated with high-latitude cooling in the Northern Hemisphere, as suggested by zonal and meridional SST gradients in the North Pacific. These findings highlight a possible weakening and poleward shift of the NPSG circulation in response to future warming.
WOS关键词WESTERN BOUNDARY CURRENTS ; CORDILLERAN ICE-SHEET ; PLANKTONIC-FORAMINIFERA ; KUROSHIO CURRENT ; CURRENT SYSTEM ; PLIOCENE ; CLIMATE ; SURFACE ; VARIABILITY ; DELTA-O-18
资助项目National Natural Science Foundation of China[42076051] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB42000000] ; Laoshan Laboratory[LSKJ202204201]
WOS研究方向Physical Geography ; Geology
语种英语
WOS记录号WOS:001534082500001
出版者ELSEVIER
源URL[http://ir.qdio.ac.cn/handle/337002/202677]  
专题海洋研究所_海洋环流与波动重点实验室
通讯作者Chang, Fengming; Li, Tiegang
作者单位1.MNR, Inst Oceanog 1, Key Lab Marine Geol & Metallogeny, Qingdao 266061, Peoples R China
2.Woods Hole Oceanog Inst, Dept Geol & Geophys, Woods Hole, MA 02543 USA
3.Tulane Univ, Dept Earth & Environm Sci, New Orleans, LA 70118 USA
4.Qingdao Geol Explorat & Dev Bur, Qingdao Geoengn Surveying Inst, Qingdao 266100, Peoples R China
5.Minist Nat Resources, Key Lab Geol Safety Coastal Urban Underground Spac, Qingdao 266100, Peoples R China
6.Qingdao Marine Sci & Technol Ctr, Lab Marine Geol, Qingdao 266237, Peoples R China
7.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
8.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Observat & Forecasting, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China
推荐引用方式
GB/T 7714		 Tang, Luyao,Chang, Fengming,Wang, Jia,et al. Enhanced and southward North Pacific subtropical gyre circulation following the intensification of Northern Hemisphere Glaciation[J]. GLOBAL AND PLANETARY CHANGE,2025,253:13.
APA Tang, Luyao,Chang, Fengming,Wang, Jia,Qian, Fang,Zhang, Junru,&Li, Tiegang.(2025).Enhanced and southward North Pacific subtropical gyre circulation following the intensification of Northern Hemisphere Glaciation.GLOBAL AND PLANETARY CHANGE,253,13.
MLA Tang, Luyao,et al."Enhanced and southward North Pacific subtropical gyre circulation following the intensification of Northern Hemisphere Glaciation".GLOBAL AND PLANETARY CHANGE 253(2025):13.

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来源：海洋研究所

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