This function repeats location information as required by some seawater
functions, e.g. swAbsoluteSalinity(), that use the gsw package to compute
seawater properties in the Gibbs Seawater formulation. It seems unlikely that
users will need to call this function directly in routine work.
locationForGsw(x)an oce object.
locationForGsw returns a list containing longitude and
latitude, with dimensionality matching pressure in the data slot of
x. If x lacks location information (in either its metadata or data
slot) or lacks pressure in its data slot, then the returned list will hold
NULL values for both longitude and latitude.
Several gsw functions require location information to be matched up with
hydrographic information. The scheme depends on the dimensionality of the
hydrographic variables and the location variables. For example, the
ctd stores salinity etc in vectors, an stores just one
longitude-latitude pair for each vector. By contrast, the argo
stores salinity etc as matrices, and stores e.g. longitude as a vector of
length matching the first dimension of salinity.
Other functions that calculate seawater properties:
T68fromT90(),
T90fromT48(),
T90fromT68(),
computableWaterProperties(),
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(),
swSpecificHeat(),
swSpice(),
swSpiciness0(),
swSpiciness1(),
swSpiciness2(),
swSstar(),
swTFreeze(),
swTSrho(),
swThermalConductivity(),
swTheta(),
swViscosity(),
swZ()