ESS200A
Prof. Jin-Yi Yu
Delayed
Oscillator: Wind Forcing
qThe
delayed oscillator suggested that oceanic Rossby and
Kevin waves forced by atmospheric wind stress in the central
Pacific provide the phase-transition mechanism (I.e.
memory) for the ENSO cycle.
qThe
propagation and reflection of waves, together with local air-sea
coupling, determine the period
of the cycle.
Atmospheric Wind Forcing
Oceanic Wave Response
Rossby Wave
Kevin Wave
(Figures from IRI)