Collaborative Research: Transport Timescales, Pathways, and Carbon Uptake in the North Atlantic Ocean

合作研究：北大西洋的传输时间尺度、路径和碳吸收

• 批准号: 0326860
• 负责人: Timothy Hall
• 金额: $ 16.28万
• 依托单位: Columbia University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-09-15 至 2006-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0326860&HistoricalAwards=false
• 关键词: Collaborative; Research; Transport; Timescales; Pathways

This project will apply a new framework to describe advective-diffusive transport in geophysical reservoirs to Labrador Sea Water (LSW) transport in the subpolar gyre. It will synthesize data from transient tracers, hydrography and subsurface ?oats to estimate: (i) the time-averaged transport timescales and pathways for LSW in the subpolar North Atlantic with a focus on the roles of advection by the geostrophic flow, mixing, and recirculation, (ii) the processes controlling propagation of LSW anomalies, and, (iii) the uptake of anthropogenic carbon in the subpolar North Atlantic, and the importance of advection by the geostrophic flow, mixing, and recirculation in controlling carbon sequestration. A range of numerical models that simulate 1950-2000 North Atlantic circulation at non-eddy-resolving and eddy-resolving resolutions will be used to test the methods and estimate confidence levels for the data analyses. The broader impacts will be better understanding of ocean circulation and carbon uptake, a critical part of Earth's climate system with great societal importance. The results will be disseminated to a wide audience and feature the project in all levels of the PI's teaching. Two graduate students and a post doc will assist the project and receive advanced training in physical oceanography and climate dynamics.

该项目将应用一个新的框架来描述地球物理水库中的平流扩散输送到副极地环流中的拉布拉多海水（LSW）输送。它将综合来自瞬态示踪剂、水文地理和地下？燕麦估计：（i）在副极地北大西洋LSW的时间平均传输时间尺度和路径，重点是地转流平流、混合和再循环的作用，（ii）控制LSW异常传播的过程，（iii）副极地北大西洋人为碳的吸收，以及地转流平流、混合的重要性，和再循环来控制碳封存。一系列数值模式，模拟1950年至2000年北大西洋环流在非涡解和涡解分辨率将被用来测试的方法和估计数据分析的置信水平。更广泛的影响将是更好地了解海洋环流和碳吸收，这是地球气候系统的一个重要组成部分，具有重大的社会意义。调查结果将向广大受众传播，并在PI的各级教学中突出该项目。两名研究生和一名博士后将协助该项目，并接受物理海洋学和气候动力学方面的高级培训。