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Equation of State (EOS-80)

The EOS-80 equation calculates water density based on temperature (°C), salinity, and pressure (bars), considering their effects. It highlights the significant impact of salinity on density and the influence of temperature and salinity variations. The equation showcases how density changes with small adjustments in temperature and salinity levels.

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Equation of State (EOS-80)

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  1. Equation of State (EOS-80) A through N are polynomials T is temperature in oC S salinity P pressure in bars Determines water density from T, S, and P

  2. Check values:

  3. 90 % of Ocean Water Mean T & S for World Ocean Greater influence of salinity on density

  4. Effects of Temperature and Salinity on Density x 10-4 oC-1 x 10-4 S-1 Saline Contraction Thermal Expansion Density changes by 0.2 kg/m3 for a T change of 1oC, and by 0.8 kg/m3 for a S change of 1.

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