Climatic teleconnections between the tropical and polar North Atlantic during the last interglacial period

末次间冰期热带和极地北大西洋之间的气候遥相关

• 批准号: 310040039
• 负责人: Dr. Henning A. Bauch
• 金额: --
• 依托单位: Alfred-Wegener-Institut (AWI) Helmholtz-Zentrum für Polar- und Meeresforschung
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2016
• 资助国家: 德国
• 起止时间: 2015-12-31 至 2021-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/310040039?language=en
• 关键词: Climatic; teleconnections; between; tropical; polar

The proposed study aims at reconstructing the development of the meridional surface ocean temperature gradients between the low and high latitude North Atlantic across the entire last interglacial cycle (MIS5e/Eemian), i.e., from its onset during deglaciation (Termination 2) to its end during glacial inception (MIS5d). Marine sediment cores from key locations in the North Atlantic will be employed. These sites control the western tropical/subtropical gyre and northward water flow from the Southern Ocean; the origin of the Gulf Stream; the warm (Atlantic) and cold (polar) water currents of the Nordic Seas. Methods applied will be based on foraminiferal assemblage studies and stable isotopes (O/C), geochemical analyses of biomarker (UK37) and of the elemental composition of the bulk sediment (XRF scanning). The data will not only allow a better assessment of naturally-forced changes in past ocean surface properties (temperature-salinity) during the Eemian, the cross-latitudinal, multi-proxy approach will also provide an improved oceanic data base to better constrain numerical climate models.

拟议的研究旨在重建整个末次间冰期循环（MIS 5e/Eemian）中北大西洋低纬和高纬之间的纬向表面海洋温度梯度的发展，即，从冰川消退期开始（终止2）到冰川开始期结束（MIS 5d）。将使用北大西洋主要地点的海洋沉积物岩心。这些地点控制着西部热带/亚热带环流和南大洋向北的水流;墨西哥湾流的起源;北欧海的暖（大西洋）和冷（极地）水流。所采用的方法将以有孔虫组合研究和稳定同位素（O/C）、生物标志物（UK 37）和大量沉积物元素组成（X射线荧光扫描）的地球化学分析为基础。这些数据不仅可以更好地评估Eemian期间过去海洋表面特性（温度-盐度）的自然强迫变化，跨纬度多代理方法还将提供一个改进的海洋数据库，以更好地约束数值气候模型。

项目成果

A 125-ka record of northern South American precipitation and the role of high-to-low latitude teleconnections

• DOI: 10.1016/j.quascirev.2021.107159
• 发表时间: 2021-10
• 期刊: Quaternary Science Reviews
• 影响因子: 4
• 作者: A. Zhuravleva;Matthias Hüls;R. Tiedemann;H. Bauch

Last interglacial ocean changes in the Bahamas: climate teleconnections between low and high latitudes

巴哈马群岛最后一次间冰期海洋变化：低纬度和高纬度之间的气候遥相关

• DOI: 10.5194/cp-14-1361-2018
• 发表时间: 2018
• 期刊: Climate of the Past
• 影响因子: 4.3
• 作者: Zhuravleva

Atlantic water heat transfer through the Arctic Gateway (Fram Strait) during the Last Interglacial

末次间冰期期间，大西洋水通过北极门户（弗拉姆海峡）进行热传递

• DOI: 10.1016/j.gloplacha.2017.09.005
• 发表时间: 2017
• 期刊: Global and Planetary Change
• 影响因子: 3.9
• 作者: Zhuravleva;Spielhagen
• 通讯作者: Spielhagen

Changes in intermediate water circulation in the tropical North Atlantic during the Last Interglacial

末次间冰期期间热带北大西洋中间水环流的变化

• DOI: 10.46427/gold2022.11362
• 发表时间: 2022
• 期刊: Goldschmidt2022 abstracts
• 作者: Zhuravleva;Hathorne;Laukert;Filippova;Kienast
• 通讯作者: Kienast

Last Interglacial (MIS5e) hydrographic shifts linked to meltwater discharges from the East Greenland margin

末次间冰期（MIS5e）水文变化与东格陵兰边缘融水排放有关

• DOI: 10.1016/j.quascirev.2017.03.026
• 发表时间: 2017
• 期刊: The EGU General Assembly
• 作者: Zhuravleva;Van Nieuwenhove
• 通讯作者: Van Nieuwenhove