Development of the Global Sea Ice 6.0 CICE configuration for the Met Office Global Coupled model

• Published in: Geoscientific Model Development
• Main Authors: J. G. L. Rae, H. T. Hewitt, A. B. Keen, J. K. Ridley, A. E. West, C. M. Harris, E. C. Hunke, D. N. Walters
• Format: Article in Journal/Newspaper
• Language: English
• Published: Copernicus Publications 2015
• Subjects: Geology; QE1-996.5; Antarctic; Arctic; The Antarctic; Antarc*; Sea ice
• Online Access: https://doi.org/10.5194/gmd-8-2221-2015; https://doaj.org/article/1ab204252adf46979165ae83825609bd

The new sea ice configuration GSI6.0, used in the Met Office global coupled configuration GC2.0, is described and the sea ice extent, thickness and volume are compared with the previous configuration and with observationally based data sets. In the Arctic, the sea ice is thicker in all seasons than in the previous configuration, and there is now better agreement of the modelled concentration and extent with the HadISST data set. In the Antarctic, a warm bias in the ocean model has been exacerbated at the higher resolution of GC2.0, leading to a large reduction in ice extent and volume; further work is required to rectify this in future configurations.