Description:

Multiyear to decadal climate variability plays a key role in the global climate and in societal needs. Major international efforts are underway to provide predictions that can help decision-maker planning for the next several years to decades, but the key mechanisms driving such long-term variations in different basins, and the differing sources of predictability on multiyear vs. decadal timescales, are still not fully understood. Inter-basin interactions are also considered important at these timescales, but to-date, the magnitude of these influences remains unknown. Decadal variability is also intimately connected with long-term anthropogenic trends, and the separation of these two components is challenging. This session invites contributions that examine mechanisms of internal multiyear to decadal variability in different ocean basins, studies attempting to isolate the internal and anthropogenically forced components and their interactions, inter-basin influences, and related prediction efforts using observational, theoretical and modeling approaches.