Temperature modulation of Northern Mid-Latitude Westerly winds intensity and displacement across the warm Pliocene

Chen, Ting1; Liu, Qingsong2,3,4; Ao, Hong3,4; Ryves, David B.5

2024-09-01

10.1016/j.gloplacha.2024.104531

GLOBAL AND PLANETARY CHANGE   影响因子和分区

0921-8181

1872-6364

The mid-latitude westerly winds are fundamental components of the Earth's climate system. However, their detailed variations during the entire Pliocene, a critical epoch often considered the closest analogue to future climate scenarios, remain poorly constrained. Here, we investigate the continuous, long-term evolution of Northern Hemisphere Mid-latitude Westerly winds (NHMW) between 6.5 and 2.5 Ma, using diatoms, aeolian dust grain size, and chemical weathering conditions from a sediment core in the central-north Pacific Ocean. Our records suggest that NHMW weakened and shifted northward from 5.8 to 4.4 Ma, followed by a sustained strengthening and equatorward shift after 4.4 Ma. NHMW dynamics during the Pliocene were linked tightly to the sea surface temperature gradient between tropical and temperate regions and affected the strength of the Asian Summer Monsoon (ASM), with weaker and more poleward NHMW increasing the intensity of and rainfall generated by the ASM. These findings underscore the importance of past dynamics of NHMW for predicting the hydroclimatological impacts of future global climate change on the functioning of major regional ocean- atmosphere and rainfall systems as the earth continues to warm.

The late Miocene Asian aeolian dust The North Pacific Ocean Diatoms

SCI ; EI

英语

通讯

National Natural Science Foundation of China[41904069] ; Science and Tech-nology Research Program of Chongqing Municipal Education Commission[KJQN202100544] ; Chongqing "Doctor Through Train" Scientific Research Program[CSTB2022BSXM-JCX0144] ; Chongqing Normal University Doctors Initiation Funding Program[20xlb021]

Physical Geography ; Geology

Geography, Physical ; Geosciences, Multidisciplinary

WOS:001291310900001

ELSEVIER

GEOSCIENCES

Web of Science

1.Chongqing Normal Univ, Chongqing Key Lab Carbon Cycle & Carbon Regulat Mt, Chongqing 401331, Peoples R China
2.Southern Univ Sci & Technol SUSTech, Ctr Marine Magnetism CM 2, Dept Ocean Sci & Engn, Shenzhen 518055, Peoples R China
3.Laoshan Lab, Lab Marine Geol, Qingdao 266061, Peoples R China
4.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China
5.Loughborough Univ, Geog & Environm, Loughborough LE11 3TU, England

Chen, Ting,Liu, Qingsong,Ao, Hong,et al. Temperature modulation of Northern Mid-Latitude Westerly winds intensity and displacement across the warm Pliocene[J]. GLOBAL AND PLANETARY CHANGE,2024,240.

Chen, Ting,Liu, Qingsong,Ao, Hong,&Ryves, David B..(2024).Temperature modulation of Northern Mid-Latitude Westerly winds intensity and displacement across the warm Pliocene.GLOBAL AND PLANETARY CHANGE,240.

Chen, Ting,et al."Temperature modulation of Northern Mid-Latitude Westerly winds intensity and displacement across the warm Pliocene".GLOBAL AND PLANETARY CHANGE 240(2024).