FP 29: Decadal Holocene and Late-glacial Variability of the Oxygen Isotopic Composition in Precipitation over Europe Reconstructed from deep-lake sediments

FP 29：从深湖沉积物重建的欧洲降水氧同位素组成的十年全新世和晚冰期变化

• 批准号: 5447443
• 负责人: Professor Dr. Achim Brauer
• 金额: --
• 依托单位: Sektion 4.3: Klimadynamik und Landschaftsentwicklung
• 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 2009-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/5447443?language=en
• 关键词: FP; 29; Decadal; Holocene; Late

DecLakes will provide six well-dated high-resolution records of the oxygen-isotope composition of past precipitation derived from ostracods in the profundal lake sediments from the Northern, Western and Southern margin of the Alps and from North-eastern Poland. The wide spatial distribution will allow to decipher in particular regional variations of past climate variability. A network of highly experienced research gropus of which each will apply their specific knowledge in isotope analyses, sedimentology and palaeoecology to all sediment cores guarantees a high degree of comparability of the individual data sets in terms of dating, analytical standards and data quality. These data sets will be used for data-model-comparision applying a hierarchy of models equipped with the explicit modelling of water stable isotopes. The study concentrates on three time windows: (1) The last 1.000 years, (2) the period around the prominent cold phase at 8.200 BR, and, (3) the Lateglacial with a special focus on the rapid high-amplitude changes. The expected outcome of the project will be a spatial view of decadal to centennial climate variability in Europe which will be used to better understand prevailing forcing mechanisms.

Decrakes将提供六个良好的高分辨率记录，记录来自阿尔卑斯山北部，西部和南部边缘以及波兰东北部的左右湖泊沉积物的过去降水量的氧相同位素组成。广泛的空间分布将使过去气候变化的特定区域变化破译。一个经验丰富的研究网络，每个网络将在同位素分析，沉积学和古生态学中应用其特定知识，以确保在约会，分析标准和数据质量方面对单个数据集的高度可比性。这些数据集将用于数据模型复杂性，应用配备有水稳定同位素的显式建模的模型的层次结构。该研究集中在三个时间窗口上：（1）最近1。000年，（2）在8.200 Br的突出寒冷阶段附近的时期，以及（3）（3）晚期冰川，特别关注快速的高振幅变化。该项目的预期结果将是欧洲百年气候变异性际气候变化的空间观点，该观点将被用来更好地理解普遍的强迫机制。