
Fig. 1.
Spatial structure of unstable modes in the presence of these meridional topographic slopes.

Fig. 2.
Spatial structure of unstable modes in the presence of a zonal topographic slope:

Fig. 3.
Spatial structure of unstable modes in the presence of a zonal topographic slope:

Fig. 4.
Spatial structure of unstable modes in the presence of a zonal topographic slope:
