Why Only Pacific Has ENSO?
	q Based 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. q It can be shown that only the Pacific Ocean is “big” (wide) enough to produce such delayed for the ENSO cycle. q It is generally believed that the Atlantic Ocean may produce ENSO-like oscillation if external forcing are applied to the Atlantic Ocean. q The Indian Ocean is considered too small to produce ENSO.