GENIE:Goldstein units

Goldstein uses non-dimensional units, and output-to-screen is expressed in these units. They are set in initialise_goldstein.F under "dimensional scale values" and are:
 * Velocity scale: usc = 0.05 m/s
 * Horizontal length scale: rsc = 6.37x10^6 (radius of Earth)
 * Vertical length scale: dsc = 5,000 m
 * Coriolis scale: fsc = 2*7.2921x10^-5 s^-1 ~= 1.46x10^-4 s^-1
 * Gravity: gsc = 9.81 m/s^2
 * Density: rh0sc = 1000 kg/m^3
 * Density anomaly: rhosc = rh0sc*fsc*usc*rsc/gsc/dsc = ~0.94007 kg/m^3
 * Specific heat capacity: cpsc = 3981.1
 * Time scale: tsc = rsc/usc = 1.274x10^8 s = ~4.1 years
 * Volume transport (OPSIT) scale: opsisc = dsc * usc * rsc * 1x10^-6 = 1592 Sv
 * EMBM scaling for heat forcing of ocean: rfluxsc = rsc/(dsc*usc*rh0sc*cpsc) = ~6.4x10^-3 (W/m^2)^-1 = ~(160 W/m^2)^-1
 * Reference salinity: saln0 = 34.9
 * EMBM scaling for freshwater forcing of ocean: rpmesco = rsc*saln0/(dsc*usc) = 889,252 (m/s)^-1 = ~(3.5 m/yr)^-1