Reconstruction of atmosphere-ocean circulation patterns for geological time slices by self-consistent coupled model simulations

该项目的目标是用自洽的全球大气-海洋耦合模式模拟，为选定的地质时间尺度重建三维大气和海洋环流模式。调查结果将在南大西洋区域化。研究南大西洋的发展、其断裂边缘以及陆上和近海沉积盆地，将有助于深入了解海洋盆地的形成过程、沉积盆地对碳循环的作用以及洋流的变化及其气候影响。将研究关键的构造事件，如南大西洋或德雷克海峡的开放及其对气候的重大影响，以便调查大气-水圈耦合系统中的过程。该项目将为其他SAMPLE项目提供关于大气-海洋环流模式的重要详细资料，如大气温度、风和压力场、热量、动量和淡水通量、风应力，特别是三维洋流和温度分布，这些SAMPLE项目研究岩石圈尺度上的边缘结构演变，或阿根廷盆地的沉积特征，或油气资源的运移和渗漏。它还将为大气-水圈系统中的气候相关过程提供详细的贡献，并有助于尽量减少观测和建模研究中的差异，例如始新世中高纬度大陆内部和两极比今天温暖得多的悖论，而热带海洋表面温度显然接近现代。

The goal of this project is to reconstruct three-dimensional atmospheric and oceanic circulation patterns with self-consistent global coupled atmosphere-ocean model simulations for selected geological time scales. The results will be regionalized for the South Atlantic. Studying the development of the South Atlantic, its rifted margins and sedimentary onshore and offshore basins will provide important insights into the processes involved for creation of ocean basins, the role of sedimentary basins for the carbon cycle, as well as changes in ocean currents and their climatic effects. Key tectonic events such as the opening of the South Atlantic or the Drake Passage and their significant effect on climate will be studied in order to investigate processes in the coupled atmosphere-hydrosphere system. This project will provide important detailed information on atmosphere-ocean circulation patterns, such as atmospheric temperature, wind and pressure fields, heat, momentum and fresh water fluxes, wind stress, and, in particular, 3-dimensional oceanic current and temperature distributions to other SAMPLE projects studying the structural evolution of the margins on a lithosphere scale, or sedimentary features in the Argentine basin, or the generation, migration, and leakage of hydrocarbon resources. It will also deliver detailed contributions to climate relevant processes in the atmosphere-hydrosphere system and help to minimize discrepancies in observational and modeling studies, such as the paradox that the mid to-high latitude continental interiors and the poles in the Eocene were much warmer than today, while tropical sea surface temperatures were apparently near-modern.