Including rotation in tidal response calculations is complicated by the fact that the traditional approximation of rotation
<osc-rot-tar>
doesn't play well with forcing by the tidal potential Doppler shift
<osc-rot-doppler>
due to rotation is included in gyre_tides
calculations. This means that the frequency σ appearing in the tidal equations
<tidal-sep-eqns>
is replaced by the co-rotating forcing frequency