swSCTp {oce} | R Documentation |
Compute salinity based on electrical conductivity, temperature, and pressure.
swSCTp(conductivity, temperature = NULL, pressure = 0, conductivityUnit, eos = getOption("oceEOS", default = "gsw"))
conductivity |
a measure of conductivity (see also |
temperature |
in-situ temperature [degC], defined
on the ITS-90 scale; see “Temperature units” in the documentation for
|
pressure |
pressure [dbar] |
conductivityUnit |
string indicating the unit used for conductivity.
This may be |
eos |
equation of state, either |
Calculate salinity from what is actually measured by a CTD, i.e.
conductivity, in-situ temperature and pressure. Often this is done
by the CTD processing software, but sometimes it is helpful to do this
directly, e.g. when there is a concern about mismatches in sensor
response times. If eos="unesco"
then salinity is calculated using
the UNESCO algorithm described by Fofonoff and Millard (1983); if it is
"gsw"
then the Gibbs-SeaWater formulation is used, via
gsw_SP_from_C
.
Practical salinity.
Dan Kelley
Fofonoff, P. and R. C. Millard Jr, 1983. Algorithms for computation of fundamental properties of seawater. Unesco Technical Papers in Marine Science, 44, 53 pp
For thermal (as opposed to electrical) conductivity, see
swThermalConductivity
. For computation of electrical
conductivity from salinity, see swCSTp
.
Other functions that calculate seawater properties: T68fromT90
,
T90fromT48
, T90fromT68
,
swAbsoluteSalinity
,
swAlphaOverBeta
, swAlpha
,
swBeta
, swCSTp
,
swConservativeTemperature
,
swDepth
, swDynamicHeight
,
swLapseRate
, swN2
,
swPressure
, swRho
,
swRrho
, swSTrho
,
swSigma0
, swSigma1
,
swSigma2
, swSigma3
,
swSigma4
, swSigmaTheta
,
swSigmaT
, swSigma
,
swSoundAbsorption
,
swSoundSpeed
, swSpecificHeat
,
swSpice
, swTFreeze
,
swTSrho
,
swThermalConductivity
,
swTheta
, swViscosity
,
swZ
swSCTp(1, T90fromT68(15), 0, eos="unesco") # 35 swSCTp(1, T90fromT68(15), 0, eos="gsw") # 35