swSpecificHeat {oce}R Documentation

Seawater specific heat

Description

Compute specific heat of seawater.

Usage

swSpecificHeat(salinity, temperature=NULL, pressure=0,
    longitude=300, latitude=30, eos=getOption("oceEOS", default="gsw"))

Arguments

salinity

either practial salinity (in which case temperature and pressure must be provided) or an oce object (in which case salinity, etc. are inferred from the object).

temperature

in-situ temperature [degC], defined on the ITS-90 scale.

pressure

seawater pressure [dbar]

longitude

longitude of observation (only used if eos="gsw"; see ‘Details’).

latitude

latitude of observation (only used if eos="gsw"; see ‘Details’).

eos

equation of state, either "unesco" or "gsw".

Details

If the first argument is a ctd object, then salinity, etc, are extracted from it, and used for the calculation.

Value

Specific heat J/(kg degC)

Author(s)

Dan Kelley

References

Millero et. al., J. Geophys. Res. 78 (1973), 4499-4507

Millero et. al., UNESCO report 38 (1981), 99-188.

Examples

swSpecificHeat(40, T90fromT68(40), 10000, eos="unesco") # 3949.499

[Package oce version 0.9-18 Index]