sw.lapse.rate {oce} | R Documentation |
Compute adiabatic lapse rate
sw.lapse.rate(S, t=NULL, p=NULL)
S |
either salinity [PSU] (in which case t and p
must be provided) or a ctd object (in which case
S , t and p are determined from the object, and
must not be provided in the argument list). |
t |
in-situ temperature [degC] |
p |
pressure [dbar] |
If the first argument is a ctd
object, then salinity,
temperature and pressure values are extracted from it, and used for
the calculation.
Compute lapse rate using Fofonoff and Millard's (1983) formula.
Lapse rate [degC/m].
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. (Section 7, pages 38-40)
lr <- sw.lapse.rate(40, 40, 10000) # 3.255976e-4