SWEET Ontology
type: Ontology
version info: 2.3
imports: phenCycle.owl
imports: statePhysical.owl
imports: relaMath.owl

ElNino
type: Class
subclass of: OscillationState
subclass of: Restriction
  on property: maximumOf
  some values from: ENSO
comment: A significant increase in sea surface temperature over the eastern and central equatorial Pacific that occurs at irregular intervals, generally ranging between two and seven years.

LaNina
type: Class
subclass of: OscillationState
subclass of: Restriction
  on property: minimumOf
  some values from: ENSO
comment: The most common of several names given toa significant decrease in sea surface temperature ("cold events") in the central and eastern equatorial Pacific. La Nina is the counterpart to the El Nino "warm event," and its spatial and temporal evolution in the equatorial Pacific is, to a considerable extent, the mirror image of El Nino, although La Nina events tend to be somewhat less regular in their behavior and duration.