Rx. Huang et J. Pedlosky, Climate variability induced by anomalous buoyancy forcing in a multilayer model of the ventilated thermocline, J PHYS OCEA, 30(11), 2000, pp. 3009-3021
Climate variability induced by surface cooling in a four-moving-layer model
of the ventilated thermocline is studied. The perturbations propagate with
in the characteristic cones defined by streamlines in individual layers whe
re the potential vorticity anomaly is created. Each time the characteristic
cones cross a new outcrop line, the number of characteristic cones doubles
. Thus, climate variability in a multilayer model can have very complicated
structure in the horizontal plane, with anomalies of alternating sign. The
vertical structure of such perturbations defines a class of dynamical ther
mocline modes.