d_water: Density of water

In AlexCast/rho: R Hydrology Optics

Description

This function calculates the water density as a function of pressure, temprature and salinity.

Usage

d_water(Tc = 20, S = 0, P = 0)

Arguments

Tc	Temperature (ºC).
S	Salinity (parts per thousand).
P	Pressure (bar in excess of 1 ATM).

Details

The density of pure (saline) water at diferent pressures is based on the UNESCO (1981) report, as recomended by Zhang et al. (2009) and Libes (2009). The UNESCO equation has a relative error of 0.0004 2009). The actual function was implemented with corrections by from Forfonoff (1985), as recomended by Libes (2009).

References

Fofonoff, N. P. 1985. Physical properties of seawater: A new salinity scale and equation of state for seawater. Journal of Geophysical Research: Oceans 90, C2, 3332-3342. DOI: 10.1029/JC090iC02p03332

Libes, S. 2009. Introduction to Marine Biogeochemistry. 2nd Edition. Academic Press, 928 pp.

Zhang, X. Hu, L. 2009. Estimating scattering of pure water from density fluctuation of the refractive index. Optics Express 17, 3, 1671-1678. DOI: 10.1364/OE.17.001671

Examples

# Average seawater density at surface under 1 ATM:
d_water(Tc = 3.5, S = 34.72, P = 0)

AlexCast/rho documentation built on Dec. 14, 2021, 9:47 a.m.