Orbital Controls on North Pacific Dust Flux During the Late Quaternary
文献类型：期刊论文
| 作者 | Zhong, Yi2; Liu, Yanguang3; Yang, Hu4,5; Yin, Qiuzhen6; Wilson, David J.1; Lu, Zhengyao7; Jaccard, Samuel L.8; Struve, Torben9; Clift, Peter D.1,10; Kaboth-Bahr, Stefanie11 |
| 刊名 | GEOPHYSICAL RESEARCH LETTERS
 |
| 出版日期 | 2024-02-28 |
| 卷号 | 51期号:4页码:14 |
| ISSN号 | 0094-8276 |
| DOI | 10.1029/2023GL106631 |
| 通讯作者 | Yang, Hu(yanghu@sml-zhuhai.cn) ; Liu, Qingsong(qsliu@sustech.edu.cn) |
| 英文摘要 | Airborne mineral dust is sensitive to climatic changes, but its response to orbital forcing is still not fully understood. Here, we present a reconstruction of dust input to the Subarctic Pacific Ocean covering the past 190 kyr. The dust composition record is indicative of source moisture conditions, which were dominated by precessional variations. In contrast, the dust flux record is dominated by obliquity variations and displays an out-of-phase relationship with a dust record from the mid-latitude North Pacific Ocean. Climate model simulations suggest precession likely drove changes in the aridity and extent of dust source regions. Additionally, the obliquity variations in dust flux can be explained by meridional shifts in the North Pacific westerly jet, driven by changes in the meridional atmospheric temperature gradient. Overall, our findings suggest that North Pacific dust input was primarily modulated by orbital-controlled source aridity and the strength and position of the westerly winds. Glacial-interglacial climate variations can affect dust transport to the ocean, but the controls on past dust fluxes to the North Pacific Ocean remain poorly constrained. This region is important because fertilization of phytoplankton growth by dust-borne iron may have contributed to lower glacial atmospheric CO2, and dust records could also constrain the past dynamics of the North Pacific westerly winds. Here, we highlight the dominance of obliquity cycles in modulating latitudinal shifts of the westerly winds and, in turn, dust inputs. In contrast, precession regulates the aridity of the dust source regions, which determines both dust emission rates and composition. Such orbital-scale fluctuations in the dust flux could influence ocean-atmosphere interactions in the middle and high northern latitudes, with implications for global atmospheric circulation and ocean carbon storage. Moisture availability in Asian dust source regions to the North Pacific Ocean were controlled by precession North Pacific dust flux reveals dominant obliquity variations, but is out-of-phase at different latitudes The westerlies in the Northern Hemisphere were primarily modulated by obliquity cycles in the late Pleistocene |
| WOS关键词 | ASIAN SUMMER MONSOON ; SEASONAL TRANSITIONS ; EQUATORIAL PACIFIC ; EOLIAN DUST ; STORM TRACK ; CHINA LOESS ; BERING-SEA ; CLIMATE ; OCEAN ; WESTERLIES |
| 资助项目 | National Natural Science Foundation of China ; State Key Laboratory of Marine Geology, Tongji University[MGK202209] ; State Key Laboratory of Marine Geology, Tongji University[SSKP202101] ; State Key Laboratory of Marine Geology ; Shenzhen Science and Technology Program[KQTD20170810111725321] ; NERC independent research fellowship[NE/T011440/1] ; Charles T. McCord Jr Chair in Petroleum Geology at LSU ; [42274094] ; [92158208] ; [42176245] ; [42261144739] ; [41976065] ; [42176066] |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| 出版者 | AMER GEOPHYSICAL UNION |
| WOS记录号 | WOS:001160518600001 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/184447]  |
| 专题 | 海洋研究所_海洋地质与环境重点实验室 |
| 通讯作者 | Yang, Hu; Liu, Qingsong |
| 作者单位 | 1.UCL, Dept Earth Sci, London, England 2.Southern Univ Sci & Technol, Ctr Marine Magnetism CM2, Dept Ocean Sci & Engn, Shenzhen, Peoples R China 3.Minist Nat Resources MNR, Inst Oceanog 1, Key Lab Marine Geol & Metallogeny, Qingdao, Peoples R China 4.Southern Marine Sci & Engn Guangdong Lab, Zhuhai, Peoples R China 5.Alfred Wegener Inst, Helmholtz Ctr Polar & Marine Res, Bremerhaven, Germany 6.Univ Catholic Louvain, Earth & Life Inst, Earth & Climate Res Ctr, Louvain La Neuve, Belgium 7.Lund Univ, Dept Phys Geog & Ecosyst Sci, Lund, Sweden 8.Univ Lausanne, Inst Earth Sci, Lausanne, Switzerland 9.Carl von Ossietzky Univ Oldenburg, Inst Chem & Biol Marine Environm ICBM, Marine Isotope Geochem, Oldenburg, Germany 10.Louisiana State Univ, Dept Geol & Geophys, Baton Rouge, LA USA |
| 推荐引用方式 GB/T 7714 | Zhong, Yi,Liu, Yanguang,Yang, Hu,et al. Orbital Controls on North Pacific Dust Flux During the Late Quaternary[J]. GEOPHYSICAL RESEARCH LETTERS,2024,51(4):14. |
| APA | Zhong, Yi.,Liu, Yanguang.,Yang, Hu.,Yin, Qiuzhen.,Wilson, David J..,...&Liu, Qingsong.(2024).Orbital Controls on North Pacific Dust Flux During the Late Quaternary.GEOPHYSICAL RESEARCH LETTERS,51(4),14. |
| MLA | Zhong, Yi,et al."Orbital Controls on North Pacific Dust Flux During the Late Quaternary".GEOPHYSICAL RESEARCH LETTERS 51.4(2024):14. |
入库方式： OAI收割
来源：海洋研究所
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