Sea water freezing
The freezing point of sea water depends upon its salinity.
In polar regions, sea water salinity is about 35 ppt (parts per thousand). Freshwater from rivers has a salinity value of 0.5 ppt or less.
The freezing temperature of water decreases by 0.28°C for every 5 ppt increase in salinity. Sea water in the polar regions begins freezing at about –1.8°C.
- ↑ National Snow and Ice Data Center. Advancing knowledge of Earth's frozen regions. All About Sea Ice. https://nsidc.org/cryosphere/seaice/characteristics/brine_salinity.html
- ↑ Charles C. Ryerson. April 2013. Icing Management for Coast Guard Assets. Cold Regions Research and Engineering Laboratory. ERDC/ C R R E L TR-13-7.