gsw (version 1.0-3)

gsw_sigma4: Potential density anomaly referenced to 4000 dbar

Description

This uses the 48-term density equation, and returns potential density referenced to a pressure of 4000 dbar, minus 1000 kg/m^3.

Usage

gsw_sigma4(SA, CT)

Arguments

SA

Absolute Salinity [ g/kg ]

CT

Conservative Temperature [ deg C ]

Value

potential density anomaly with reference pressure 4000 dbar [ kg/m^3 ]

References

http://www.teos-10.org/pubs/gsw/html/gsw_sigma4.html

See Also

Use gsw_sigma0 for 0 dbar pressure, gsw_sigma1 for 1000 dbar, gsw_sigma2 for 2000 dbar, or gsw_sigma3 for 3000 dbar.

Examples

# NOT RUN {
gsw_sigma4(34.7118, 28.8099) # 37.898467323406976
# }