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An unprecedented decline in Antarctic sea ice extent (SIE) in late 2016 ended a weak mutidecadal expansion. Multiple mechanisms have been hypothesized to explain this decline, including large-scale atmospheric influences—a strong zonal wave 3 (ZW3)…
Over the last decade, the Southern Ocean has experienced episodes of severe sea ice area decline. Abrupt events of sea ice loss are challenging to predict, in part due to … incomplete understanding of processes occurring at the scale of individual ice floes. Here, we use high-resolution altimetry…
Large-scale modes of atmospheric variability in the southern midlatitudes can influence Antarctic sea ice concentrations (SIC) via diverse processes. For instance, variability in both the Southern Annular Mode (SAM) and zonal wave 3 (ZW3) have been linked to the abrupt 2015/16 sea ice decline.
Fidelity and projected changes in the climate models, used for the Intergovernmental Panel on Climate … Change (IPCC) Fourth Assessment Report (AR4), are assessed with regard to the Southern Hemisphere … extratropical ocean and sea ice systems.
A high-resolution, offline ocean general circulation model, incorporating a realistic parameterization of … mixed layer convection, is used to diagnose pathways and time scales of Southern Hemisphere intermediate, mode, and lower thermocline water ventilation.
The coupled ocean–atmosphere–ice response to variations in the Southern Annular Mode (SAM) is … examined in the National Center for Atmospheric Research (NCAR) Community Coupled Climate Model … (version 2).