gsw (version 1.0-3)

gsw_SP_from_SA: Convert from Absolute Salinity to Practical Salinity

Description

Calculate Practical Salinity from Absolute Salinity, pressure, longitude, and latitude.

Usage

gsw_SP_from_SA(SA, p, longitude, latitude)

Arguments

SA

Absolute Salinity [ g/kg ]

p

sea pressure [ dbar ]

longitude

longitude in decimal degrees [ 0 to 360 or -180 to 180]

latitude

latitude in decimal degrees [ -90 to 90 ]

Value

Practical Salinity (PSS-78) [ unitless ]

Details

If SP is a matrix and if its dimensions correspond to the lengths of longitude and latitude, then the latter are converted to analogous matrices with expand.grid.

Note: unlike the corresponding Matlab function, this does not return a flag indicating whether the location is in the ocean.

References

http://www.teos-10.org/pubs/gsw/html/gsw_SP_from_SA.html

See Also

gsw_SA_from_SP does the reverse, while gsw_SP_from_SK, gsw_SP_from_SR and gsw_SP_from_Sstar are similar to this.

Examples

# NOT RUN {
gsw_SP_from_SA(34.7118, 10, 188, 4) # 34.548721553448317
# }