gsw_SA_from_SP: Convert from practical salinity to absolute salinity
Description
Calculate Absolute Salinity from Practical Salinity, pressure,
longitude, and latitude.
Usage
gsw_SA_from_SP(SP, p, longitude, latitude)
Arguments
SP
Practical Salinity (PSS-78) [ unitless ]
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
Absolute Salinity [ g/kg ]
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.