晚第四纪热带西太平洋海气CO<sub>2</sub>交换影响因素

郭景腾; 熊志方; 李铁刚

doi:10.16562/j.cnki.0256-1492.2023071601

晚第四纪热带西太平洋海气CO₂交换影响因素

1.
自然资源部第一海洋研究所海洋地质与成矿作用重点实验室，青岛 266061

2.
崂山实验室海洋地质过程与环境功能实验室，青岛 266237

基金项目: 国家自然科学基金项目“晚中新世以来印度洋-太平洋暖池水体交换过程及其气候效应”（41830539），“南极罗斯海硅藻沉积变化机理及其与中更新世气候转型（MPT）的潜在关联”（42006075）；泰山学者工程项目（ts20190963）

详细信息

作者简介: 郭景腾（1989—），男，博士，主要从事古海洋与古环境研究，E-mail：guojingteng@fio.org.cn

通讯作者: 李铁刚（1965—），男，研究员，主要从事海洋地质与环境研究，E-mail: tgli@fio.org.cn

中图分类号: P736

收稿日期: 2023-07-16

修回日期: 2023-08-19

录用日期: 2023-08-19

刊出日期: 2023-08-28

Influencing factors of air-sea CO₂ exchange in the Western Tropical Pacific during the late Quaternary

1.
Key Laboratory of Marine Geology and Metallogeny, First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, China

2.
Laboratory for Marine Geology, Laoshan Laboratory, Qingdao 266237, China

More Information

Corresponding author: LI Tiegang, tgli@fio.org.cn

Received Date: 16 July 2023

Revised Date: 19 August 2023

Accepted Date: 19 August 2023

Publish Date: 28 August 2023

摘要

摘要:
探究海气CO₂交换有助于解析全球碳循环和全球气候变化。由于海水和大气的直接接触，研究表层海水碳酸盐系统变化成为探究海气碳交换的关键。基于已有热带西太平洋表层海水碳酸盐系统研究成果，本文总结了有孔虫壳体B/Ca和δ¹¹B指标重建碳酸盐系统参数的原理、方法及优缺点。然后，从厄尔尼诺-南方涛动（El Niño-Southern Oscillation, ENSO）、东亚季风以及大气桥梁和海洋隧道三方面综述了晚第四纪热带西太平洋海气CO₂交换影响因素的研究现状。结果显示，类ENSO通过横向平流和垂向变化分别影响热带西太平洋东端和西端的海气碳交换。东亚夏季风对热带西太平洋海气碳交换具有较强的调控作用，而东亚冬季风的调控作用较弱或不明显。冰消期南大洋深部流通状况增强，可通过大气桥梁（大气CO₂）和海洋隧道（南极中层水）影响热带西太平洋海气碳交换。然而，为了更准确清晰地了解全球碳循环变化，还需针对指标记录的可靠性、覆盖范围以及海气碳交换在更长时间尺度的变化机理等方面开展更多研究。
- 浮游有孔虫 /
- B/Ca /
- δ¹¹B /
- 厄尔尼诺-南方涛动 /
- 东亚季风 /
- 南大洋 /
- 碳循环
Abstract:
Exploring air-sea CO₂ exchange helps to analyze the global carbon cycle and global climate change. Due to the direct contact between seawater and atmosphere, characterizing the changes in the carbonate system of surface water is the key to explore the air-sea CO₂ exchange. Available studies of the sea surface carbonate system in the Western Tropical Pacific (WTP) was reappraised, the principles, methods, advantages and disadvantages of reconstructing carbonate system parameters with foraminiferal B/Ca and δ¹¹B were summarized. Secondly, the research status of influencing factors of air-sea CO₂ exchange in the WTP during the late Quaternary was reviewed from three aspects: El Niño-Southern Oscillation (ENSO), East Asian monsoons, and atmospheric bridge and ocean tunnel. Results show that the ENSO-like processes can affect the air-sea CO₂ exchange in the eastern and western parts of the WTP via lateral advection and vertical change, respectively. The East Asian summer monsoon regulates the air-sea CO₂ exchange in WTP strongly and effectively, while the East Asian winter monsoon, weakly and insignificantly. During the deglaciation period, the increased ventilation of deep water in the Southern Ocean affects the air-sea CO₂ exchange in the WTP through the atmospheric bridge (atmospheric CO₂) and ocean tunnel (Antarctic Intermediate Water). In the future, more researches are required into the reliability and coverage of proxy records, and the mechanisms of air-sea CO₂ exchange over longer time scales, to understand changes in the global carbon cycle more accurately and clearly.
- planktonic foraminifera /
- B/Ca /
- δ¹¹B /
- ENSO /
- East Asian monsoon /
- Southern Ocean /
- carbon cycle

HTML全文

图 1 溶解的B随海水pH的演化趋势^[13]

Figure 1.

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图 2 ENSO过程和东亚季风对海气CO₂交换的调控

Figure 2.

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图 3 流进和流出南大洋的水团^[27]

Figure 3.

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晚第四纪热带西太平洋海气CO2交换影响因素

1. 自然资源部第一海洋研究所海洋地质与成矿作用重点实验室，青岛 266061 2. 崂山实验室海洋地质过程与环境功能实验室，青岛 266237