Attribution of ocean climate change signals in the Atlantic.

大西洋海洋气候变化信号的归因。

• 批准号: NE/C509266/2
• 负责人: David Marshall
• 金额: $ 9.99万
• 依托单位: University of Oxford
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2007
• 资助国家: 英国
• 起止时间: 2007 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=NE%2FC509266%2F2
• 关键词: Attribution; ocean; climate; change; signals

The proposal aims to identify observational signals associated with changes in the overturning circulation and heat transport in the North Atlantic, exploiting the development of the monitoring system put in place by international programmes and the UK RAPID monitoring initiative. Our study aims to analyse both existing historical data obtained over the last 50 years and the latest emerging observations. Our approach is to apply a forward circulation model with an accompanying adjoint for the North Atlantic in order to identify how signals in the data are formed by external forcing and ocean physics. The adjoint provides a highly effective method of identifying the sensitivity of model signals and optimising the model towards selected data signals, which will be used together to identify how signals in the data are controlled. The study will focus on several themes: identifying how data signals along the western boundary and ocean interior are controlled using the adjoint approach; identifying the role of geostrophic eddies in limiting the adjoint approach; mapping hydrographic changes along the margins of the Atlantic from historical data and identifying the propagation of coastal wave modes from altimetric data.

该提案的目的是确定与北大西洋翻转环流和热量输送变化有关的观测信号，利用国际方案和英国RAPID监测倡议建立的监测系统的发展。我们的研究旨在分析过去50年来获得的现有历史数据和最新出现的观测结果。我们的方法是应用一个伴随伴随北大西洋的前向环流模型，以确定如何形成的外部强迫和海洋物理数据中的信号。伴随提供了一种识别模型信号的灵敏度并针对所选数据信号优化模型的非常有效的方法，其将一起用于识别如何控制数据中的信号。这项研究将侧重于几个主题：确定如何使用伴随方法控制沿着西部边界和海洋内部的数据信号;确定地转涡旋在限制伴随方法方面的作用;根据历史数据绘制沿着大西洋边缘的水文变化图，并根据测高数据确定沿海波浪模式的传播。

项目成果

Basinwide Integrated Volume Transports in an Eddy-Filled Ocean

• DOI: 10.1175/2009jpo4185.1
• 发表时间: 2009-12-01
• 期刊: JOURNAL OF PHYSICAL OCEANOGRAPHY
• 影响因子: 3.5
• 作者: Kanzow, T.;Johnson, H. L.;Johns, W. E.
• 通讯作者: Johns, W. E.

Eddy Formation in the Tropical Atlantic Induced by Abrupt Changes in the Meridional Overturning Circulation

经向翻转环流突变引起的热带大西洋涡流形成

• DOI: 10.1175/2009jpo4004.1
• 发表时间: 2009
• 期刊: Journal of Physical Oceanography
• 影响因子: 3.5
• 作者: Goes M

Reconciling theories of a mechanically driven meridional overturning circulation with thermohaline forcing and multiple equilibria

机械驱动经向翻转环流与温盐强迫和多重平衡理论的协调

• DOI: 10.1007/s00382-007-0262-9
• 发表时间: 2007
• 期刊: Climate Dynamics
• 影响因子: 4.6
• 作者: Johnson H