Climate of the LAst Millennium (CLAM): An Integrated Data-Model Approach to Reconstruct and Interpret Annual Variability in North Atlantic Circulation

上个千年的气候（CLAM）：重建和解释北大西洋环流年度变化的综合数据模型方法

• 批准号: NE/N001435/1
• 负责人: Paul Halloran
• 金额: $ 27.27万
• 依托单位: UNIVERSITY OF EXETER
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2015
• 资助国家: 英国
• 起止时间: 2015 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=NE%2FN001435%2F1
• 关键词: Climate; LAst; Millennium; CLAM; Integrated

The ocean circulation of the North Atlantic is variable and pivotal in controlling regional and global climate. This variability occurs both naturally, and it is anticipated, in response to anthropogenic activity. Internal and forced natural variability in this system has so far largely been characterised in terrestrial archives and models rather than in the real ocean. It is critical that we understand the magnitude, timescale, drivers and impacts of this variability if we are to correctly attribute observed trends in the North Atlantic circulation, and develop robust early warning systems of, and plan adaptation to, future change. In CLAM we aim to utilise a network of robustly calibrated and verified absolutely dated sclerochronological proxy archives from NW Scotland, N. Iceland and the Gulf of Maine, together with high-resolution climate models, to investigate the mechanisms and forcings driving variability in the circulation patterns of the North Atlantic over the last millennium. This proposal is a resubmission (NE/M002160/1, Jan 2014, graded 8) in which we address minor concerns highlighted by the reviewers, notably we: (i) eliminate fieldwork risks - having completed all necessary sample collection using independent funding; (ii) further-demonstrate the powerful nature of the methodologies and potential findings though additional preliminary model-proxy analyses; (iii) greater societal impact via the development of a deeper collaboration with the Met Office Hadley Centre, and (iv) deliver improved value for money, through associated cost savings.

北大西洋的海洋环流是多变的，在控制区域和全球气候方面起着关键作用。这种变化既会自然发生，也会因人类活动而预期发生。迄今为止，该系统的内部和强迫自然变率主要是在陆地档案和模式中描述的，而不是在真实的海洋中。如果我们要正确地将观测到的北大西洋环流趋势归因于此，并制定强有力的早期预警系统和适应未来变化的计划，了解这种变化的幅度、时间尺度、驱动因素和影响是至关重要的。在CLAM中，我们的目标是利用来自苏格兰西北部、冰岛北部和缅因湾的经过严格校准和验证的绝对年代代用档案网络，以及高分辨率气候模型，研究过去一千年来北大西洋环流模式变化的机制和驱动力。该提案是重新提交（NE/M002160/1, 2014年1月，评分8），其中我们解决了审稿人强调的一些小问题，特别是我们：(i)消除了实地调查风险-使用独立资金完成了所有必要的样本收集；（ii）通过额外的初步模型代理分析，进一步证明方法和潜在发现的强大性质；（iii）通过与英国气象局哈德利中心（Met Office Hadley Centre）开展更深入的合作，产生更大的社会影响；（iv）通过节省相关成本，提高物有所值。

项目成果

Isolating and Reconstructing Key Components of North Atlantic Ocean Variability From a Sclerochronological Spatial Network

• DOI: 10.1029/2018pa003366
• 发表时间: 2018-10
• 期刊: Paleoceanography and Paleoclimatology
• 影响因子: 3.5
• 作者: D. Reynolds;I. Hall;Sophie M. Slater;M. Mette;A. Wanamaker;J. Scourse;F. Garry;P. Halloran

Destabilisation of the Subpolar North Atlantic prior to the Little Ice Age.

• DOI: 10.1038/s41467-022-32653-x
• 发表时间: 2022-08-25
• 期刊: NATURE COMMUNICATIONS
• 影响因子: 16.6
• 作者: Arellano-Nava, Beatriz;Halloran, Paul R.;Boulton, Chris A.;Scourse, James;Butler, Paul G.;Reynolds, David J.;Lenton, Timothy M.
• 通讯作者: Lenton, Timothy M.

Annually resolved North Atlantic marine climate over the last millennium.

• DOI: 10.1038/ncomms13502
• 发表时间: 2016-12-06
• 期刊: NATURE COMMUNICATIONS
• 影响因子: 16.6
• 作者: Reynolds, D. J.;Scourse, J. D.;Halloran, P. R.;Nederbragt, A. J.;Wanamaker, A. D.;Butler, P. G.;Richardson, C. A.;Heinemeier, J.;Eiriksson, J.;Knudsen, K. L.;Hall, I. R.
• 通讯作者: Hall, I. R.