specified profile of minimum buoyancy frequency squared
Nsquared_lowerlimit = gsw_Nsquared_lowerlimit(p,long,lat)
Calculates the minimum Nsquared such that a cast is stable.
p = sea pressure [ dbar ]
( i.e. absolute pressure - 10.1325 dbar )
long = longitude in decimal degrees [ 0 ... +360 ]
lat = latitude in decimal degrees north [ -90 ... +90 ]
lat & long may have dimensions 1x1 or Mx1 or 1xN or MxN, where p is MxN.
Nsquared_lowerlimit = Minimum Brunt-Vaisala Frequency squared [rad2 s-2 ]
The units of N2 are radians2 s-2 however in may textbooks this is
abreviated to s-2 as radians does not have a unit. To convert the
frequency to hertz, cycles sec-1, divide the frequency by 2π, ie N/(2π).
p = [ 10; 50; 125; 250; 600; 1000;]
long = 180;
lat = 4;
N2_lowerlimit = gsw_Nsquared_lowerlimit(p,long,lat)
Paul Barker and Trevor McDougall. [ firstname.lastname@example.org ]
3.06.13 (4th August, 2021)
Barker, P.M., and T.J. McDougall, 2016: Stabilisation of hydrographic
profiles. J. Atmosph. Ocean. Tech., submitted.
IOC, SCOR and IAPSO, 2010: The international thermodynamic equation of
seawater - 2010: Calculation and use of thermodynamic properties.
Intergovernmental Oceanographic Commission, Manuals and Guides No. 56,
UNESCO (English), 196 pp. Available from the TEOS-10 web site.
The software is available from http://www.TEOS-10.org