Understanding and
evaluating sea ice feedbacks is complicated by the strong coupling to polar cloud processes and ocean heat and freshwater transport.
Several ocean - air -
sea ice feedback processes may be operating (Meredith and King 2005; Hanna 1996), though it has been difficult to pin down their relative roles in the observational studies (King 1994; Jacobs and Comiso 1997).
This sea ice feedback at 18K is consistent with the smaller fsnow / ice ∼ 1.1 in the So and CO2 experiments, which applied to a warmer earth with less sea ice.