# convert_RtoS: Conductivity-Salinity Conversion In marelac: Tools for Aquatic Sciences

 convert_RtoS R Documentation

## Conductivity-Salinity Conversion

### Description

Estimates the salinity of seawater from conductivity, temperature and pressure. The equation is valid over ranges: temperature from -2 to 35 `^\circ`C, pressure from 0 to 1000 bar, and salinity from 2 to 42.

### Usage

``````convert_RtoS(R = 1, t = 25, p = max(0, P-1.013253), P = 1.013253)
``````

### Arguments

 `R ` Conductivity ratio, the conductivity at (S, t, P) divided by the conductivity at S = 35, t = 15, p = 0 [-] `t ` Temperature, `^\circ`C `p ` Gauge (or applied) pressure, the pressure referenced against the local atmospheric pressure, bar `P ` True pressure, bar

The salinity.

### Note

The conductivity ratio for Salinity = 40.0000, t = 40, p = 1000 is 1.888091.

### Author(s)

Karline Soetaert <karline.soetaert@nioz.nl>

### References

Fofonoff NP and Millard RC Jr, 1983. Algorithms for computation of fundamental properties of seawater. UNESCO technical papers in marine science, 44, 53 pp.
http://unesdoc.unesco.org/images/0005/000598/059832EB.pdf

`convert_AStoPS`, `convert_PStoAS`, `convert_StoR`, `convert_StoCl`, `convert_p`, `convert_T`,

### Examples

``````convert_RtoS(R = 1.888091, t = 40, p = 1000)

## Salinity = 40.0000, t = 40, p = 1000, cond = 1.888091
convert_RtoS(R = 1, t = 15, p = 0)

## Check values
convert_RtoS(R = 0.6990725, t = 10, p = 0)  # 26.8609
convert_RtoS(R = 0.6990725, t = 10, p = 100)  # 26.5072
convert_RtoS(R = 1.1651206, t = 20, p = 100)  # 36.3576

``````

marelac documentation built on Sept. 25, 2023, 5:06 p.m.