swAbsoluteSalinity {oce} | R Documentation |
Compute seawater absolute salinity, according to the GSW/TEOS-10 formulation.
swAbsoluteSalinity(salinity, pressure = NULL, longitude = NULL, latitude = NULL)
salinity |
either practical salinity (in which case |
pressure |
pressure in dbar. |
longitude |
longitude of observation. |
latitude |
latitude of observation. |
The absolute salinity is calculated using the GSW function
gsw_SA_from_SP
. Typically, this is a fraction of a unit
higher than practical salinity as defined in the UNESCO formulae.
Absolute Salinity in g/kg.
Dan Kelley
McDougall, T.J. and P.M. Barker, 2011: Getting started with TEOS-10 and the Gibbs Seawater (GSW) Oceanographic Toolbox, 28pp., SCOR/IAPSO WG127, ISBN 978-0-646-55621-5.
The related TEOS-10 quantity “conservative temperature” may be
computed with swConservativeTemperature
. For a ctd object,
absolute salinity may also be recovered by indexing as e.g.
ctd[["absoluteSalinity"]]
or ctd[["SA"]]
.
Other functions that calculate seawater properties: T68fromT90
,
T90fromT48
, T90fromT68
,
swAlphaOverBeta
, swAlpha
,
swBeta
, swCSTp
,
swConservativeTemperature
,
swDepth
, swDynamicHeight
,
swLapseRate
, swN2
,
swPressure
, swRho
,
swRrho
, swSCTp
,
swSTrho
, swSigma0
,
swSigma1
, swSigma2
,
swSigma3
, swSigma4
,
swSigmaTheta
, swSigmaT
,
swSigma
, swSoundAbsorption
,
swSoundSpeed
, swSpecificHeat
,
swSpice
, swTFreeze
,
swTSrho
,
swThermalConductivity
,
swTheta
, swViscosity
,
swZ
## Not run: sa <- swAbsoluteSalinity(35.5, 300, 260, 16) stopifnot(abs(35.671358392019094 - sa) < 00.000000000000010) ## End(Not run)