Deep-sea carbonate cycles and their role in glacial-interglacial atmospheric CO2 changes

深海碳酸盐循环及其在冰期-间冰期大气二氧化碳变化中的作用

• 批准号: FT140100993
• 负责人: Prof Jimin Yu
• 金额: $ 52.71万
• 依托单位: The Australian National University
• 依托单位国家: 澳大利亚
• 项目类别: ARC Future Fellowships
• 财政年份: 2015
• 资助国家: 澳大利亚
• 起止时间: 2015-01-01 至 2019-06-03
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/FT140100993
• 关键词: Deep; sea; carbonate; cycles; their

The causes for past atmospheric carbon dioxide (CO2) changes and their mechanistic links to the histories of climate and ocean carbonate chemistry remain elusive, but may hold future-relevant information. This project aims to use novel methods to quantify deep ocean carbonate ion concentrations, a critical but poorly constrained parameter of the global carbon cycle, at 10 key locations spanning the global ocean during the last 350 000 years. By feeding new data into a model, this project aims to gain critical insights into mechanisms controlling past deep-sea carbonate cycles and atmospheric CO2 changes, thereby leading to improved understandings of the climate system.

过去大气二氧化碳（CO2）变化的原因及其与气候和海洋碳酸盐化学历史的机械联系仍然难以捉摸，但可能包含与未来相关的信息。该项目旨在使用新的方法来量化深海碳酸盐离子浓度，这是全球碳循环的一个关键但约束性很差的参数，在过去35万年中跨越全球海洋的10个关键位置。通过将新数据输入模型，该项目旨在获得对控制过去深海碳酸盐循环和大气CO2变化的机制的重要见解，从而提高对气候系统的理解。