Cenozoic climate, thermohaline circulation, and the marine carbon cycle

拟议项目的目的是调查大规模海洋环流和海洋碳循环对新生代气候变冷的作用。使用古海洋学重建和数值海洋环流和海洋地球化学建模相结合的方法，我们建议研究大陆植被，岩石风化（与WP 1合作）和营养供应海洋生物圈之间的联系，作为海洋生产力变化的潜在驱动力，因此碳封存。我们的研究重点是全球碳循环的变化，如海洋沉积物中的地球化学代用品记录，以及它们与海洋环流和海洋地球化学的关系的理解。将与WP2合作，用海洋代用数据记录验证模型结果。此外，WP 4模型将为WP 3和WP 5中的数值模拟提供边界条件。在研究项目的过程中，WP4中的建模将通过实施WP1提供的大陆风化数据和使用WP5提供的更新的大气边界条件来改进。

The aim of the proposed project is to investigate the role of the large-scale ocean circulation and the marine carbon cycle for Cenozoic climate cooling. Using a combined approach of paleoceanographic reconstruction and numerical ocean circulation and biogeochemical modeling, we propose to study the links between continental vegetation, rock weathering (in collaboration with WP1) and nutrient supply to the marine biosphere as a potential driver for changes in the ocean productivity and hence carbon sequestration. The focus of our study are the changes in the global carbon cycle, as recorded by geochemical proxies in marine sediments, and the understanding of their relation with ocean circulation and biogeochemistry. The model results will be validated with marine proxy data records in collaboration with WP2. Furthermore, WP4 models will provide boundary conditions for numerical modeling in WP3 and WP5. In the course of the research project, modeling in WP4 will be refined by implementing continental weathering data provided by WP1, and by using updated atmospheric boundary conditions provided by WP5.