Pathways and variability of NADW export from the Atlantic Ocean, in two eddy-resolving models

两种涡旋解析模型中大西洋 NADW 输出的路径和变化

• 批准号: 0961686
• 负责人: Lisa Beal
• 金额: $ 38.25万
• 依托单位: University of Miami
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-05-01 至 2014-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0961686&HistoricalAwards=false
• 关键词: Pathways; variability; NADW; export; Atlantic

This project will address the mechanisms and pathways of North Atlantic Deep Water (NADW) export from the South Atlantic to Indian Ocean. Two eddy-resolving ocean general circulation models will be analyzed to determine the quantity and characteristics of deep flow eddies in the NADW and the possible roles they may play in the inter-basin exchange. The project will also address interannual changes in NADW transport and its relationship to the subtropical front, if any. The results will be examined in relation to the Atlantic Meridional Overturning Circulation (AMOC).The research bears on the AMOC and global thermohaline circulation which are crucial links in the global climate system. Improved understanding of the deep circulation links between the Atlantic and Indian Oceans should translate to improved certainty in climate modeling and prediction.

该项目将研究从南大西洋向印度洋出口北大西洋深水（NADW）的机制和途径。本文将分析两种解析涡旋的海洋环流模式，以确定NADW深流涡旋的数量和特征，以及它们在盆地间交换中可能发挥的作用。该项目还将研究南亚副热带气旋输送的年际变化及其与亚热带锋的关系（如果有的话）。研究结果将与大西洋经向翻转环流（AMOC）相联系。该研究涉及全球气候系统的关键环节AMOC和全球温盐环流。对大西洋和印度洋之间深层环流联系的进一步了解应转化为提高气候模式和预测的确定性。