Compute specific heat of seawater.
swSpecificHeat(
salinity,
temperature = NULL,
pressure = 0,
longitude = NULL,
latitude = NULL,
eos = getOption("oceEOS", default = "gsw")
)either practical salinity (in which case temperature
and pressure must be provided) or an oce object (in
which case salinity, etc. are inferred from the object).
in-situ temperature (\(^\circ\)C), defined on the ITS-90 scale.
seawater pressure (dbar)
longitude of observation (only used if eos="gsw";
see “Details”).
latitude of observation (only used if eos="gsw"; see
“Details”).
equation of state, either "unesco" or "gsw".
Specific heat (J/kg/degC).
If the first argument is a ctd object, then salinity, etc, are
extracted from it, and used for the calculation.
Millero et. al., J. Geophys. Res. 78 (1973), 4499-4507
Millero et. al., UNESCO report 38 (1981), 99-188.
Other functions that calculate seawater properties:
T68fromT90(),
T90fromT48(),
T90fromT68(),
computableWaterProperties(),
locationForGsw(),
swAbsoluteSalinity(),
swAlpha(),
swAlphaOverBeta(),
swBeta(),
swCSTp(),
swConservativeTemperature(),
swDepth(),
swDynamicHeight(),
swLapseRate(),
swN2(),
swPressure(),
swRho(),
swRrho(),
swSCTp(),
swSR(),
swSTrho(),
swSigma(),
swSigma0(),
swSigma1(),
swSigma2(),
swSigma3(),
swSigma4(),
swSigmaT(),
swSigmaTheta(),
swSoundAbsorption(),
swSoundSpeed(),
swSpice(),
swSpiciness0(),
swSpiciness1(),
swSpiciness2(),
swSstar(),
swTFreeze(),
swTSrho(),
swThermalConductivity(),
swTheta(),
swViscosity(),
swZ()
swSpecificHeat(40, T90fromT68(40), 10000, eos = "unesco") # 3949.499
#> [1] 3849.499