What does LANS-a do to the Rossby Radius?
normal
LANS-a, small a
Dispersion relation
Solve for kR, the wavenumber of the Rossby
Radius:
LANS-a makes the
Rossby Radius effectively larger.
LANS-a, larger a
kR
kR
Use that to
find
R*, the
effective Rossby Radius, as a function of a:*