ctdfjorder.CTD.CTD.add_absolute_salinity(self) → None

Calculates and adds absolute salinity to the CTD data using the TEOS-10 salinity conversion formula.

Raises:

NoSamplesError – When the function is called on a CTD object with no data.

Notes

The gsw.SA_from_SP function from the Gibbs SeaWater (GSW) Oceanographic Toolbox is utilized for this calculation. More information about this function can be found at the TEOS-10 website.

This method computes the absolute salinity from practical salinity for each profile in the dataset using the TEOS-10 standard. Absolute salinity provides a more accurate representation of salinity by accounting for the variations in seawater composition.

The TEOS-10 formula for converting practical salinity \(( S_P )\) to absolute salinity \(( S_A )\) is used:

\[S_A = f(S_P, p, \phi, \lambda)\]

where \(( p )\) is the sea pressure, \(( \phi )\) is the latitude, and \(( \lambda )\) is the longitude.

Examples

ctd_data = CTD('example.csv')
ctd_data.add_absolute_salinity()
# This will add a new column with absolute salinity values to the dataset, calculated using the
# TEOS-10 formula.

See also

gsw.conversions.SA_from_SP

Function used for the conversion from practical salinity to absolute salinity.