Suborbital climate variability in the Southern Ocean (SUBCLIMATE): Comparision and potential forcing using high-resolution sediment physical, geochemical, and micropaleotological

南大洋亚轨道气候变率（SUBCLIMATE）：利用高分辨率沉积物物理、地球化学和微古生物学进行比较和潜在强迫

• 批准号: 29589599
• 负责人: Dr. Gerhard Kuhn
• 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: 2007
• 资助国家: 德国
• 起止时间: 2006-12-31 至 2013-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/29589599?language=en
• 关键词: Suborbital; climate; variability; Southern; Ocean

The project SUBCLIMATE intends to study suborbital climate cycles of the Weddell Sea and the Scotia Sea as part of the Southern Ocean Initiative of the International Marine Past Global Change Study (IMAGES) program. Scientific goals of our study are (i) a high-resolution insight into ice-sheet dynamics. Through a combination of bottom water and surface water climate signals, we will investigate internal and external forcing factors that influence, for instance, (ii) Antarctic Bottom Water production and the associated development of the Southern Ocean and the global thermohaline circulation. In addition, our aim is to data the retreat of the Antarctic ice masses (iii) at the end of the last glacial, and to conduct (iiii) a bi-polar comparison of suborbital climate change. To achieve this goal, we will create ultrahigh-resolution paleoclimate proxy records through a combination of traditional analytical means (e.g., ¿18O, ¿13C, ICP/MS, , diatoms, carbonate, Corg) and state-of-the-art core logging techniques (Multi-Sensor Core Logger, Geoscan color logger, XRF-scanner). Those proxy records will be dated by AMS14C, ¿18O, and geomagnetic paleointensity, and investigated, together with globally distributed records of suborbital climate variability, for spectral and cross-spectral behavior, to provide clues about underlying mechanisms and forcing factors of suborbital climate change.