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Precessional variation of monsoon-controlled silicate weathering caused steady atmospheric carbon dioxide consumption during glacial periods

文献类型：期刊论文

作者Zhao, Debo3; Wan, Shiming3,5; Huang, Xiangtong2; Lu, Zhengyao4; Clift, Peter D.7; Li, Dongyong1,6; Liu, Xiting1,5,6; Yang, Yifei3; Jiang, Shoushu3; Lin, Anni3
刊名COMMUNICATIONS EARTH & ENVIRONMENT
出版日期2025-07-01
卷号6期号:1页码:9
DOI10.1038/s43247-025-02498-5
通讯作者Zhao, Debo(zhaodebo@qdio.ac.cn)
英文摘要Silicate weathering regulates climate as a critical carbon sink, yet understanding its role in the carbon cycle is challenging because of limited knowledge about the impact of temperature and rainfall on weathering during glacial-interglacial cycles. Here we investigated the orbital scale of silicate weathering variations and their role in atmospheric carbon dioxide sequestration using reconstructions, model simulations, and modern river sediment geochemical data. Results show that silicate weathering intensity in subtropical and tropical monsoon regions follows the precession cycle and is mainly controlled by rainfall. During glacial periods, global carbon dioxide consumption by silicate weathering was lower than interglacials but remained stable at similar to 2.47 Teramoles per year. We propose that ice sheet expansion confined intense weathering to the subtropics and tropics during glacial times. As insolation patterns shifted with the precession cycle, rainfall belts oscillated between hemispheres, maintaining a constant weathering area and stable carbon dioxide consumption. Our study provides insights into silicate weathering's role in the global carbon cycle, both historically and in future projections.
WOS关键词IRON ISOTOPE FRACTIONATION ; EQUATORIAL ATLANTIC ; ASIAN MONSOON ; GLOBAL MONSOON ; SEA-LEVEL ; CLIMATE ; TEMPERATURE ; OCEAN ; PRECIPITATION ; PROVENANCE
资助项目National Natural Science Foundation of China (National Science Foundation of China)[2022YFF0800504] ; National Key Research and Development Program of China[42176063] ; National Natural Science Foundation of China[XDB40010100] ; Strategic Priority Research Program of the Chinese Academy of Sciences, China
WOS研究方向Environmental Sciences & Ecology ; Geology ; Meteorology & Atmospheric Sciences
语种英语
WOS记录号WOS:001520993400009
出版者SPRINGERNATURE
源URL[http://ir.qdio.ac.cn/handle/337002/202653]  
专题海洋研究所_海洋环流与波动重点实验室
通讯作者Zhao, Debo
作者单位1.Ocean Univ China, Coll Marine Geosci, Key Lab Submarine Geosci & Prospecting Technol, Qingdao 266100, Peoples R China
2.Tongji Univ, State Key Lab Marine Geol, Shanghai 200092, Peoples R China
3.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Observat & Forecasting, Key Lab Marine Geol & Environm, Qingdao, Peoples R China
4.Lund Univ, Dept Phys Geog & Ecosyst Sci, S-22362 Lund, Sweden
5.Qingdao Marine Sci & Technol Ctr, Lab Marine Geol, Qingdao 266237, Peoples R China
6.Ocean Univ China, Frontiers Sci Ctr Deep Ocean Multispheres & Earth, Qingdao 266100, Peoples R China
7.UCL, Dept Earth Sci, London WC1E 6BS, England
推荐引用方式
GB/T 7714		 Zhao, Debo,Wan, Shiming,Huang, Xiangtong,et al. Precessional variation of monsoon-controlled silicate weathering caused steady atmospheric carbon dioxide consumption during glacial periods[J]. COMMUNICATIONS EARTH & ENVIRONMENT,2025,6(1):9.
APA Zhao, Debo.,Wan, Shiming.,Huang, Xiangtong.,Lu, Zhengyao.,Clift, Peter D..,...&Lin, Anni.(2025).Precessional variation of monsoon-controlled silicate weathering caused steady atmospheric carbon dioxide consumption during glacial periods.COMMUNICATIONS EARTH & ENVIRONMENT,6(1),9.
MLA Zhao, Debo,et al."Precessional variation of monsoon-controlled silicate weathering caused steady atmospheric carbon dioxide consumption during glacial periods".COMMUNICATIONS EARTH & ENVIRONMENT 6.1(2025):9.

入库方式： OAI收割

来源：海洋研究所

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