Brunt Vaisala or Buoyancy Frequency
N2 = (Rg/H(z)) · [
dT0/dz + (Rg/Cp) ·
(T0(z)/H(z)) ] =
(Rg/H(z)) · [
dT0/dz + g/Cp ] =
where, T0(z) = <T(z,,,t)>,
i.e., temperature averaged over longitude ,
latitude , and time t.
The static stability, , is related to the
buoyancy frequency as
dT0/dz + g/Cp
The static stability is positive for stable conditions and
zero or negative for unstable conditions.