What is the salinity of sea ice?
The main component of sea ice is crystals of fresh water ice, and there is a small amount of salt between these crystals. The salinity of initial ice is generally 2- 10C. When the freezing speed is accelerated, more salt will enter the space between crystals, and the salinity of sea ice will increase accordingly. However, the salt water in sea ice is much heavier than the sea ice itself, so the salt water will gradually seep down over time. When the ice age reaches more than one year, the salinity of sea ice will be greatly reduced. At this time, if the sea ice melts, it can be used as fresh water to drink.