Dynamics and Thermodynamics of a Warming Event in a Coupled Tropical Atmosphere–Ocean Model

摘要: Abstract A simple coupled ocean–atmosphere model, similar to that of Zebiak and Cane, is used examine the dynamic thermodynamic processes associated with El Nino/Southern Oscillation (ENSO). The model run for 300 years. interannual variability which results regular, a period either 3 or 4 years, quantized by annual cycle. amplitude (∼1.5 m s−1 wind 2°C SST anomalies), structure compare well observations. warm event initiated in spring prior peak, described as an instability system. During growth, sea surface temperature (SST) anomaly primarily generated vertical upwelling processes. can be approximately expression ∂T/∂t = KTh − α*T, where T anomaly, t time, h upper layer thickness (pycnocline) perturbation α* effective damping time includes heat loss atmosphere. KT parameterizes...