qBased
on the delayed oscillator theory of ENSO, the ocean basin has to be big enough
to produce the “delayed” from ocean wave propagation and reflection.
qIt
can be shown that only the Pacific Ocean is “big” (wide) enough to produce
such delayed for the ENSO cycle.
qIt is
generally believed that the Atlantic Ocean may produce ENSO-like
oscillation if external forcing are applied to the
Atlantic Ocean.
qThe
Indian Ocean is considered too small to produce
ENSO.