FP 02: Development, calibration and application of independent salinity proxies - PaleoSalt

FP 02：独立盐度代理的开发、校准和应用 - PaleoSalt

• 批准号: 5446118
• 负责人: Professor Dr. Jelle Bijma, Ph.D.
• 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 2009-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/5446118?language=en
• 关键词: FP; 02; Development; calibration; application

Testing climate models for future and past climate change critically depend on our ability to quantitatively reconstruct past climate. Paleosalinity is the single most important oceanographic parameter which currently can still not be quantified from sedimentary records. Nine partners from 6 different European countries will bring together complementary expertise in a multidisciplinary to develop accurate and robust salinity proxies by (1) increasing precision, accuracy and applicability of the only currently used salinity proxy... (2) develping a new approach through compound specific ¿ D combined with UK37 and link the two by using ¿ 180 and ¿ D to deconvolve salinity, (3) using ultra-high-resolution elemental and isotopic analysis of biogenic carbonats to trace salinity changes. For all three approaches a mechanistic understanding for proxy relationships will be developed. Only through understanding the processes underlying the actual proxy recording we can develop robust proxy relationships that will hold beyond empirical calibrations under none analogue conditions. Different organisms have been selected... taking advantage of their specific possibilities. These new proxies will be be verified in key areas where temperature and salinity gradients can be separated and finally applied by investigating the impact of the Mediterranean salt disil and Agulhas salt distil on North Atlantic convection.

测试未来和过去气候变化的气候模型严重依赖于我们定量重建过去气候的能力。古盐度是目前尚不能从沉积记录中量化的最重要的海洋参数。来自6个不同欧洲国家的9个合作伙伴将汇集多学科的互补专业知识，通过(1)提高目前唯一使用的盐度代理的精度，准确性和适用性，开发准确和强大的盐度代理。(2)开发了一种新的方法，将化合物特异的¿D与UK37结合，并通过¿180和¿D将两者连接起来进行盐度反卷积；(3)利用生物成因碳酸盐的超高分辨率元素和同位素分析来追踪盐度变化。对于这三种方法，将开发对代理关系的机制理解。只有通过理解实际代理记录背后的过程，我们才能开发出强大的代理关系，这种关系将在无模拟条件下超越经验校准。选择了不同的生物……利用他们特定的可能性。这些新的代理将在温度和盐度梯度可以分离的关键地区进行验证，并最终通过研究地中海盐蒸馏和阿古拉斯盐蒸馏对北大西洋对流的影响来应用。