A numerical investigation into Southern Ocean sea ice using CICE version 4.0 ...

• Main Author: Stevens, RP
• Format: Thesis
• Language: unknown
• Published: University Of Tasmania 2023
• Subjects: Prydz Bay; Southern Ocean; Weddell; Weddell Sea; ice pack; Sea ice
• Online Access: https://dx.doi.org/10.25959/23236775.v1; https://figshare.utas.edu.au/articles/thesis/A_numerical_investigation_into_Southern_Ocean_sea_ice_using_CICE_version_4_0/23236775/1

Numerical simulations of Southern Ocean sea ice were conducted using the Los Alamos numerical sea ice model CICE version 4 (CICE4) which was configured in stand-alone mode on a moderately high-resolution Southern Ocean grid. The atmospheric forcing was derived from the hemispheric forecasting model Polar Limited Area Prediction Systems and ocean forcing from the global ocean general circulation model Australian Climate Ocean Model. An eleven-year simulation was carried out for the interval from 1998 to 2008. Results show that the meridional position of the sea ice edge follows an annual cycle of northward (southward) movement during ice growth (decay). This cycle is largely driven by thermodynamics but ice advection also contributes. Once a mature winter ice pack has formed, ice advection exceeds thermodynamic expansion in providing impetus for northward ice edge movement, most prominently in regions such as north of Prydz Bay and the western Weddell Sea. These zones are characterized by persistent southerly ...