pole for non-u component?

[hkershaw-brown]

Just on note on possible bug, need to take a better look:

In pop this line is for u_current

DART/models/POP/model_mod.f90

Lines 455 to 457 in 1ddc21f

	! Get list of regular boxes that cover this u dipole quad
	! false indicates that for the u grid there's nothing special about pole
	call reg_box_overlap(u_c_lons, u_c_lats, .false., reg_lon_ind, reg_lat_ind)

In quad utils this is in the general init_irreg_interp, which may or may not be u -> .

DART/models/utilities/quad_utils_mod.f90

Lines 841 to 842 in 1ddc21f

	! false indicates that for the u grid there's nothing special about pole
	call reg_box_overlap(h, u_c_lons, u_c_lats, .false., reg_lon_ind, reg_lat_ind)

also t_pole_y is set but not used.