The Global Meridional Overturning Circulation (GMOC) is a major driver of Earth’s climate, connecting the Atlantic, Pacific and Southern Oceans and influencing biogeochemical cycling on many timescales. Paleoclimate reconstructions and modeling studies have highlighted the close link between changes in the climate system and variations in the structure and magnitude of GMOC. Yet, much remains to be understood about the interplay between GMOC and the cryosphere, atmosphere and ocean biogeochemistry, and the mechanisms driving past, present and future GMOC variations. New insights into GMOC dynamics are thus essential to improve our predictive capability of GMOC changes in the future. This session welcomes theoretical, modeling and proxy-based studies that investigate the nature, stability and sensitivity of the GMOC to external forcing and internal feedbacks across decadal-to-tectonic timescales. Contributions that explore GMOC changes under past or future climate conditions as well as the detectability of present GMOC variations are particularly welcome.

• C - Cryosphere