The North Atlantic Ocean plays a critical role in regulating regional and global climate by influencing the transport of heat and salt through the ocean system. This region has undergone dramatic climate shifts, including abrupt warming and cooling events linked to ice sheet growth and changes in deep ocean circulation. Such variations have altered the movement and storage of heat, salt, and carbon in the deep ocean, affecting Earth’s climate over both short and long timescales.

IODP³ Expedition 506S seeks to integrate sediment core data from key legacy sites recovered by deep-sea drilling expeditions across the North Atlantic. Since no single location can fully capture the complexity of past climate change, a major goal of IODP³ Expedition 506S is to align data from multiple drill sites to develop a comprehensive regional record. The Expedition 506S Science Team will create and apply advanced computational tools for signal alignment and image analysis, enabling more precise and higher-resolution correlations of climatic signals than previously possible.

This volume of the Proceedings of the International Ocean Drilling Programme includes the Scientific Prospectus and scientific results of IODP³ Expedition 506S.