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S (‰), salinity: * P (db, 10 kPa), pressure: * |
TC(S, P) = ºC |
This calculator determines the freezing point of seawater, TC(S, P) for given salinity, S and pressure, P. The default calculation uses surface pressure.
Note:10 kPa = 1 dbar is close to the pressure increase that corresponds to a depth increase of 1 m. If you enter a pressure value equal to the depth in metres it will give an approximate result.
Temperature uses IPTS-68, salinity uses PSS-78; see reference.
Calculation based on Fofonoff, P. and R. C. Millard Jr (1983) Algorithms for computation of fundamental properties of seawater.Unesco Technical Papers in Marine Sciences 44, 53 pp.