Compute $\alpha$, the seawater thermal expansion coefficient,
as the product of $\alpha/\beta$ and $\beta$, each
calculated from McDougall's (1987) algorithm.
Usage
a <- sw.alpha(S, t, p, is.theta=FALSE);
Arguments
S
salinity [PSU]
t
Temperature or potential temperature [$^\circ$C], according to is.theta
p
pressure [dbar]
is.theta
Set TRUE if t is theta or FALSE if t is in-situ
Value
Value in 1/degC.
Details
McDougall (1987). Note the use of potential temperature, not temperature.
References
McDougall, T.J. 1987. "Neutral Surfaces"
Journal of Physical Oceanography vol 17 pages 1950-1964