Salt more important than cold polar temps in sea ice formation

Source: Science Daily

When polar seas freeze and ice forms, it is not only due to cold air chilling the surface of the water. Even more important is that warm water is prevented from rising to the surface from the depths of the ocean, due to the much lower salinity of the surface water.

https://www.sciencedaily.com/releases/2022/11/221116150658.htm