Multidecadal polynya formation in a conceptual (box) model

Abstract. Maud Rise polynyas (MRPs) form due to deep convection, which is caused by static instabilities of the water column. Recent studies with Community Earth System Model (CESM) have indicated that a multidecadal varying heat accumulation in subsurface layer occurs prior MRP formation transport over Weddell Gyre. In this study, conceptual box model, forced CESM data, used investigate role formation. Cases excluding and including salt fluxes are considered, multiple polynya events only simulated cases where included. The dominant frequency for these results, approximately accumulation, still visible white noise added freshwater flux. This indicates importance dominance