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

测试未来和过去气候变化的气候模型关键取决于我们定量重建过去气候的能力。古盐度是唯一最重要的海洋学参数，目前仍无法从沉积记录中量化。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替代物的精度，准确性和适用性...... (2)（3）利用生物碳酸盐的超高分辨率元素和同位素分析来追踪盐度的变化。对于所有这三种方法的代理关系的机械理解将开发。只有通过理解实际代理记录的过程，我们才能开发出强大的代理关系，在非模拟条件下，这种关系将超越经验校准。不同的生物体被选中...利用他们的特殊可能性这些新的代用指标将在温度和盐度梯度可以分离的关键地区得到验证，并最终通过调查地中海盐disil和Agulhas盐disil对北大西洋对流的影响加以应用。

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.