| Precession-driven changes in air-sea CO2 exchange by East Asian summer monsoon in the Western Tropical Pacific since MIS 6 | |
Guo, Jingteng1,2 ; Qiu, Xiaohua3; Algeo, Thomas J.4,5; Li, Tiegang1,2; Xiong, Zhifang1,2; Zhao, Debo6; Dang, Haowen7; Qiao, Peijun7; Qin, Bingbin1; Jia, Qi1
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| 2022-12-01 | |
| 发表期刊 | PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
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| ISSN | 0031-0182 |
| 卷号 | 607页码:12 |
| 通讯作者 | Li, Tiegang([email protected]) |
| 摘要 | Surface waters of the modern Western Tropical Pacific (WTP) are in equilibrium with atmospheric CO2. However, air-sea exchange of CO2 in this region may have been modulated in the past by oceanic-atmospheric fluctuations in the tropical Pacific such as the East Asian monsoon and the El Nino-Southern Oscillation (ENSO) and extratropical mode waters such as Antarctic Intermediate Water. Thus, understanding controls on the sea-surface carbonate system in the WTP is important for forecasting future carbon-cycle changes in this region. Here, we reconstruct sea-surface pH and pCO(2) since Marine Isotope Stage 6 (MIS 6; 155 ka) based on B/ Ca ratios of the planktic foraminifer Globigerinoides ruber (white) in sediment Core MD06-3052 from the western Philippine Sea, and we then calculate the difference between oceanic and atmospheric pCO(2) (Delta pCO(2()(sw-)(atm)())) in order to evaluate the history of air-sea CO2 exchange. Delta pCO(2()(sw-)(atm)()) changes were strongly modulated by the similar to 20-kyr precession cycle. The results of cross-spectral analysis demonstrate a close connection between the East Asian summer monsoon (EASM) and air-sea CO2 exchange since MIS 6, demonstrating that precession-driven EASM can affect air-sea CO2 exchange through regulation of surface productivity and thermocline depth. In contrast, the East Asian winter monsoon (EAWM) and ENSO-like conditions are not major influences on air-sea CO2 exchange in the study area at precession-band frequencies. In addition, enhanced upwelling of Southern Ocean-sourced deepwater rich in dissolved inorganic carbon (DIC) affected the upper water column during transitions from cold to warm stages (i.e., deglaciations). In conclusion, these findings suggest that orbital precession influences can affect oceanic conditions not only through climate change and biological processes but also through sea-surface carbonate chemistry. |
| 关键词 | Planktic foraminifera B/Ca El Nino-Southern Oscillation Productivity Thermocline Precession |
| DOI | 10.1016/j.palaeo.2022.111267 |
| 收录类别 | SCI |
| 语种 | 英语 |
| 资助项目 | National Natural Science Foundation of China (NSFC)[41830539]; Marine S&T Fund of Shandong Province for Pilot National Laboratory for Marine Science and Technology (Qingdao)[2022QNLM050203]; Evaluation and Effect of Paleoclimatic Evolution[GASI-04-QYQH-04]; NSFC[91858106]; NSFC[42006075]; NSFC[41976080]; Taishan Scholars Project Funding[ts20190963]; Basic Scientific Fund for National Public Research Institutes of China[2019S04]; Basic Scientific Fund for National Public Research Institutes of China[2017Y07]; Basic Scientific Fund for National Public Research Institutes of China[GY0222Q06]; Basic Scientific Fund for National Public Research Institutes of China[2019Q09] |
| WOS研究方向 | Physical Geography ; Geology ; Paleontology |
| WOS类目 | Geography, Physical ; Geosciences, Multidisciplinary ; Paleontology |
| WOS记录号 | WOS:000888065800002 |
| 出版者 | ELSEVIER |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.qdio.ac.cn/handle/337002/180254 |
| 专题 | 海洋地质与环境重点实验室 |
| 通讯作者 | Li, Tiegang |
| 作者单位 | 1.Minist Nat Resources, Inst Oceanog 1, Key Lab Marine Geol & Metallogeny, Qingdao 266061, Peoples R China 2.Pilot Natl Lab Marine Sci & Technol Qingdao, Lab Marine Geol, Qingdao 266237, Peoples R China 3.Shandong Inst Geol Sci, Jinan 250013, Peoples R China 4.Univ Cincinnati, Dept Geol, Cincinnati, OH 45221 USA 5.China Univ Geosci, State Key Labs Biogeol & Environm Geol, Geol Proc & Mineral Resources, Wuhan 430074, Peoples R China 6.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China 7.Tongji Univ, State Key Lab Marine Geol, Shanghai 200092, Peoples R China |
| 推荐引用方式 GB/T 7714 | Guo, Jingteng,Qiu, Xiaohua,Algeo, Thomas J.,et al. Precession-driven changes in air-sea CO2 exchange by East Asian summer monsoon in the Western Tropical Pacific since MIS 6[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2022,607:12. |
| APA | Guo, Jingteng.,Qiu, Xiaohua.,Algeo, Thomas J..,Li, Tiegang.,Xiong, Zhifang.,...&Jia, Qi.(2022).Precession-driven changes in air-sea CO2 exchange by East Asian summer monsoon in the Western Tropical Pacific since MIS 6.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,607,12. |
| MLA | Guo, Jingteng,et al."Precession-driven changes in air-sea CO2 exchange by East Asian summer monsoon in the Western Tropical Pacific since MIS 6".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 607(2022):12. |
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| 1-s2.0-S003101822200（3547KB） | 期刊论文 | 出版稿 | 限制开放 | CC BY-NC-SA | 浏览 | |
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