Set-ups and Findings of Aqua-planet GCM 

Hayashi & Sumi(1986) 
Zonally uniform, north-south symmetric SST
identified Intrinsic structures:
ISV, Super Clusters, Double ITCZ, Tropical Cyclones

Numaguti(1992,1993)
identified ITCZ as a WISHE with k=0
north-south asymmetry of SST
ITCZ jump during  seasonal march

Kodama(1999)
localized "patch" of warm SST in tropics
subtropical fronts: SPCZ, SACZ, Baiu