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Past Interglacial Temperature Regimes (PAINTER): Marine isotope stages 11 in the NE-Atlantic sector

过去的间冰期温度状况 (PAINTER)：大西洋东北部区域的海洋同位素阶段 11

基本信息

批准号：
32972392
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：
2006
资助国家：
德国
起止时间：
2005-12-31 至 2010-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/32972392?language=en
关键词：
Past Interglacial Temperature Regimes PAINTER

项目摘要

Within the community of scientists working on climate change it is widely believed that marine isotope stage 11 can in many ways be seen as the Pleistocene equivalent to the recent interglacial conditions of the Holocene. However, in contrast to this perception our own paleoceanographic studies from the high-northern latitudes point to systematic differences in the principle configuration of atmospheric and oceanic circulation during these two interglacial intervals. The goal of this project is therefore to evaluate whether isotopic stage 11 may indeed be taken as the adequate interglacial model to describe present and future Holocene climate change. Using a comparative approach by analysing sea surface conditions during stages 11 and 1 in the Northern Hemisphere we will investigate to what extent a fundamentally different pattern of the North Atlantic Oscillation may have determined the specific climate difference between these two warm periods. In detail, we plan to analyze the climate character of stage 11 and the Holocene with a broad methodological approach using a series of geochemical, micropaleontological, and sedimentological proxies. These methods will be carried out on a number of marine sediment core sites describing a North-South transect in the North Atlantic, i.e from the subpolar to the subtropical region, and including sediment samples from a single site in the western Mediterranean Sea for comparison.

在研究气候变化的科学家群体中，人们普遍认为，在许多方面，海洋同位素第11阶段可以被视为相当于最近的间冰期全新世的更新世。然而，与这种看法相反的是，我们自己从北半球高纬度进行的古海洋学研究指出，在这两个间冰期期间，大气和海洋环流的主要结构存在系统性差异。因此，该项目的目标是评估是否确实可以将同位素第11阶段作为描述现在和未来全新世气候变化的适当间冰期模型。采用比较的方法，通过分析北半球第11和第1阶段的海面状况，我们将调查北大西洋涛动的根本不同模式可能在多大程度上决定了这两个暖期之间的具体气候差异。具体地说，我们计划使用一系列的地球化学、微古生物学和沉积学指标，以广泛的方法分析第11阶段和全新世的气候特征。这些方法将在描述北大西洋南北断面(即从亚极点到亚热带区域)的若干海洋沉积物核心地点进行，并包括地中海西部单一地点的沉积物样本以供比较。