Collaborative Research: Leveraging the AMOC arrays and models to understand heat and freshwater transports in the North Atlantic

合作研究：利用 AMOC 阵列和模型了解北大西洋的热量和淡水输送

• 批准号: 1924456
• 负责人: Susan Lozier
• 金额: $ 51万
• 依托单位: Georgia Tech Research Corporation
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2019
• 资助国家: 美国
• 起止时间: 2019-09-01 至 2022-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1924456&HistoricalAwards=false
• 关键词: Collaborative; Research; Leveraging; AMOC; arrays

The Atlantic meridional overturning circulation (AMOC) is a large-scale redistribution of heat and freshwater that impacts weather and climate. This project will use numerical models of the ocean circulation to examine the long record of observations from moorings deployed in the North Atlantic. The goals include diagnosing the mass, heat, and freshwater fluxes of the AMOC and assessing the relationships between observations of ocean properties at the moorings and ocean or atmospheric properties at other locations. The project will also determine the optimal mooring array design for observing the AMOC. The project includes outreach to middle and high school students entered around the North Atlantic Ocean and its unique role in climate.This project will use a suite of ocean models, including the ECCO variational data assimilation model system, to examine the long time-series of observations from North Atlantic mooring arrays (including OSNAP and RAPID-MOCHA). The goals include: assimilation of Atlantic array data into global and regional ocean state estimates to assess the value they add to independent elements of the Global Ocean Observing System; diagnosing relationship of observed mass, heat and freshwater transport variability at the arrays to causal atmospheric forcing; identification of the potential for the array data to serve as proxies for remote, unobserved variables or indices of key oceanic and climatic relevance; and determining the optimal redesign of the OSNAP array for observing AMOC. The proposed research will complement ongoing major investments by NSF in observing the ocean role in climate through the AMOC and promises to ensure that future investments are as effective as possible.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.

大西洋经向翻转环流（AMOC）是影响天气和气候的热量和淡水的大规模重新分配。 该项目将使用海洋环流的数值模型来检查北大西洋部署的系泊装置的长期观测记录。目标包括诊断 AMOC 的质量、热量和淡水通量，并评估系泊处海洋特性的观测结果与其他位置的海洋或大气特性之间的关系。该项目还将确定用于观测 AMOC 的最佳系泊阵列设计。该项目包括向进入北大西洋周围的中学生和高中生及其在气候中的独特作用进行推广。该项目将使用一套海洋模型，包括 ECCO 变分数据同化模型系统，来检查长期的时间序列来自北大西洋系泊阵列的观测（包括 OSNAP 和 RAPID-MOCHA）。目标包括： 将大西洋阵列数据同化为全球和区域海洋状态估计，以评估它们为全球海洋观测系统独立要素增加的价值；诊断阵列中观测到的质量、热量和淡水输送变化与因果大气强迫的关系；确定阵列数据作为远程、未观测到的变量或关键海洋和气候相关指数的代理的潜力；并确定用于观测 AMOC 的 OSNAP 阵列的最佳重新设计。拟议的研究将补充 NSF 通过 AMOC 观察海洋在气候中的作用方面正在进行的重大投资，并承诺确保未来的投资尽可能有效。该奖项反映了 NSF 的法定使命，并通过使用基金会的智力价值和更广泛的影响审查标准。

项目成果

Distinct sources of interannual subtropical and subpolar Atlantic overturning variability

年际副热带和副极地大西洋翻转变化的不同来源

• DOI: 10.1038/s41561-021-00759-4
• 发表时间: 2021-07
• 期刊: Nature Geoscience
• 影响因子: 18.3
• 作者: Kostov, Yavor;Johnson, Helen L.;Marshall, David P.;Heimbach, Patrick;Forget, Gael;Holliday, N. Penny;Lozier, M. Susan;Li, Feili;Pillar, Helen R.;Smith, Timothy
• 通讯作者: Smith, Timothy