NSFGEO-NERC: Collaborative Research: Role of the Overturning Circulation in Carbon Accumulation (ROCCA)
NSFGEO-NERC:合作研究:翻转环流在碳积累中的作用(ROCCA)
基本信息
- 批准号:2400433
- 负责人:
- 金额:$ 37.47万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2024
- 资助国家:美国
- 起止时间:2024-02-01 至 2027-01-31
- 项目状态:未结题
- 来源:
- 关键词:
项目摘要
The North Atlantic Ocean plays an important role in the global carbon cycle, and it absorbs a disproportionately high amount of human carbon dioxide emissions. These points are thought to be closely related to the Atlantic Meridional Overturning Circulation (AMOC), but the balance of contributions to North Atlantic carbon accumulation from air-sea fluxes and ocean transports is not well constrained. There is significant uncertainty about what the future holds, both for AMOC strength and carbon uptake as they respond to the effects of climate change and other changing forcings. This project will utilize long-term and ongoing observations across the North Atlantic basin to quantify carbon uptake and carbon transport and the variability in these parameters on the time scale of decades. This work will support a variety of efforts to educate and promote underrepresented groups in ocean science. The project investigators will partner with a variety of institutions in Georgia, Florida and in the Caribbean to educate students at a range of levels. They will promote a carbon cycle education website that includes interactive K-12 education materials. This is a project jointly funded by the National Science Foundation’s Directorate for Geosciences (NSF/GEO) and the National Environment Research Council (NERC) of the United Kingdom (UK) via the NSF/GEO-NERC Lead Agency Agreement. This Agreement allows a single joint US/UK proposal to be submitted and peer-reviewed by the Agency whose investigator has the largest proportion of the budget. Upon successful joint determination of an award recommendation, each Agency funds the proportion of the budget that supports scientists at institutions in their respective countries.The ROCCA project aims to redefine our understanding of the North Atlantic carbon system, one of the world’s most important regions for carbon sequestration on climatically-important timescales. The team will use new estimates of anthropogenic carbon transports across both subtropical and subpolar domains to determine the contributions of air-sea fluxes and ocean circulation to regional carbon accumulation, a fundamental knowledge gap. This analysis will enable evaluation of their combined effects on future carbon uptake as overturning strength is projected to weaken. New observations in Florida Straits will fully characterize the chemical variability in water mass structure on seasonal timescales for the first time, and in combination with air-sea anthropogenic CO2 fluxes derived from transport-divergence/accumulation budgets, the team will validate existing numerical simulations and improve the representation of carbon cycle processes in the next generation of climate models. The specific research objectives are to 1. Calculate anthropogenic carbon transports across the RAPID array at 26°N (2004 to 2024) and the subpolar OSNAP section (2014-2024), including sensitivity to AMOC changes; 2. Produce time-series of changing anthropogenic carbon inventory in the North Atlantic; 3. Air-sea anthropogenic carbon flux timeseries from accumulation (O1) and transport divergence (O2); 4. Constrain projections of future change and identify anthropogenic carbon transport / AMOC metrics; and 5. Assess the uncertainty of components of the observational approach, applying them to high-resolution model outputs.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.
北大西洋在全球碳循环中发挥着重要作用,它吸收了不成比例地高得不成比例的人类二氧化碳排放量。这些点被认为与大西洋子午线翻转环流(AMOC)密切相关,但海气通量和海洋输送对北大西洋碳积累的贡献平衡并没有受到很好的限制。在应对气候变化和其他变化因素的影响时,AMOC的强度和碳吸收情况都存在很大的不确定性。该项目将利用整个北大西洋盆地的长期和持续观测,在几十年的时间尺度上量化碳吸收和碳传输以及这些参数的可变性。这项工作将支持教育和促进海洋科学中代表性不足群体的各种努力。项目调查人员将与佐治亚州、佛罗里达州和加勒比海地区的各种机构合作,在不同的水平上教育学生。他们将推广一个碳循环教育网站,其中包括互动的K-12教育材料。这是一个由国家科学基金会地球科学局(NSF/GEO)和英国国家环境研究委员会(NERC)通过NSF/GEO-NERC牵头机构协议共同资助的项目。该协定允许美国和英国提交一个单一的联合提案,并由该机构进行同行审查,该机构的调查员在预算中所占比例最大。在成功地联合确定一项奖项建议后,每个机构将为支持各自国家机构科学家的预算比例提供资金。ROCA项目旨在重新定义我们对北大西洋碳系统的理解,北大西洋碳系统是世界上最重要的地区之一,在具有气候重要性的时间尺度上进行碳固定。该团队将使用对亚热带和亚极区人为碳输送的新估计,以确定海-气通量和海洋环流对区域碳积累的贡献,这是一个基本的知识缺口。这一分析将能够评估它们对未来碳吸收的综合影响,因为预计倾覆强度将减弱。在佛罗里达海峡的新观测将首次在季节时间尺度上完全表征水团结构中的化学可变性,并结合从输送-散度/积累预算中获得的海-气人为二氧化碳通量,该团队将验证现有的数值模拟,并改进下一代气候模型中碳循环过程的表示。具体的研究目标是:1.计算北纬26°N(2004-2024)和亚极OSNAP剖面(2014-2024)的人为碳输送,包括对AOC变化的敏感性;2.产生北大西洋人为碳清单变化的时间序列;3.根据累积(O1)和输送散度(O2)计算海-气人为碳通量时间序列;4.限制对未来变化的预测,并确定人为碳输送/AMOC度量标准;5.评估观测方法组成部分的不确定性,将其应用于高分辨率模型输出。该奖项反映了NSF的法定使命,并通过使用基金会的智力优势和更广泛的影响审查标准进行评估,被认为值得支持。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Galen McKinley其他文献
Galen McKinley的其他文献
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{{ truncateString('Galen McKinley', 18)}}的其他基金
mCDR 2023: Data requirements for quantifying natural variability and the background ocean carbon sink in marine carbon dioxide removal (mCDR) models
mCDR 2023:海洋二氧化碳清除(mCDR)模型中量化自然变化和背景海洋碳汇的数据要求
- 批准号:
2333608 - 财政年份:2023
- 资助金额:
$ 37.47万 - 项目类别:
Standard Grant
Collaborative Research: Forced drivers of trends in ocean biogeochemistry: Volcanos and atmospheric carbon dioxide
合作研究:海洋生物地球化学趋势的强制驱动因素:火山和大气二氧化碳
- 批准号:
1948624 - 财政年份:2020
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$ 37.47万 - 项目类别:
Standard Grant
Collaborative Research: Uncertainty in predictions of 21st century ocean biogeochemical change
合作研究:21世纪海洋生物地球化学变化预测的不确定性
- 批准号:
1818501 - 财政年份:2017
- 资助金额:
$ 37.47万 - 项目类别:
Standard Grant
Collaborative Research: Uncertainty in predictions of 21st century ocean biogeochemical change
合作研究:21世纪海洋生物地球化学变化预测的不确定性
- 批准号:
1558258 - 财政年份:2016
- 资助金额:
$ 37.47万 - 项目类别:
Standard Grant
Collaborative Research: The carbon balance of Lake Superior: Modeling lake processes and understanding impacts on the regional carbon budget
合作研究:苏必利尔湖的碳平衡:模拟湖泊过程并了解对区域碳预算的影响
- 批准号:
0628560 - 财政年份:2006
- 资助金额:
$ 37.47万 - 项目类别:
Standard Grant
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