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The Role of Ekman flow and Planetary Waves in the Oceanic Cross-Equatorial Heat Transport
Publisher: American Meteorological Society
Abstract: A numerical model is used to mechanistically simulate the oceans? seasonal cross-equatorial heat transport, and the results of Oort and Vonder Haar (1976). The basic process of Ekman pumping and drift is found to be able ...
On Equatorial Waves and El Niño. II: Effects of Air-Sea Thermal Coupling
Publisher: American Meteorological Society
Abstract: Dynamics readjustment of a stratified ocean model to wind perturbations leads to variations in sea surface temperature (SST) related to the early phases of the observed interannual warming of the tropical Pacific known as ...
A Reduced-Gravity Isopycnal Ocean Model: Hindcasts of El Niño
Publisher: American Meteorological Society
Abstract: A global isopycnal ocean model is presented for the study of interannual to interdecadal variability in the global ocean. The model treats the primitive equations on a sphere with a generalized vertical coordinate. This ...
Vertical Eddy Mixing in the Tropical Upper Ocean: Its Influence on Zonal Currents
Publisher: American Meteorological Society
Abstract: In this study, the authors explore how vertical-mixing parameterizations influence the structure of zonal currents in the eastern equatorial Pacific using an isopycnal ocean model that contains an explicit surface mixed ...
A Delayed Action Oscillator for ENSO
Publisher: American Meteorological Society
Abstract: A simple nonlinear model is proposed for the El Niño/Southern Oscillation (ENSO) phenomenon. Its key feature is the inclusion of oceanic wave transit effects through a negative, delayed feedback. A linear stability analysis ...
Vacillations in a Coupled Ocean–Atmosphere Model
Publisher: American Meteorological Society
Abstract: Results are presented from a 35-year integration of a coupled ocean-atmosphere model. Both ocean and atmosphere are two-level, nonlinear primitive equations models. The global atmospheric model is forced by a steady, zonally ...
Decadal Variability in ENSO Predictability and Prediction
Publisher: American Meteorological Society
Abstract: A simple coupled model is used to examine decadal variations in El Niño?Southern Oscillation (ENSO) prediction skill and predictability. Without any external forcing, the coupled model produces regular ENSO-like variability ...
Kelvin-Wave-Induced Anomalous Advection and the Onset of Surface Warming in El Niño Events
Publisher: American Meteorological Society
Abstract: The initial surface warming of the 1982 El Niño event was of quite different timing and pattern from that associated with most El Niño events; strong anomalous warming occurred first in July along the equator and subsequently ...
Oceanic Influences on the Seasonal Cycle in Evaporation over the Indian Ocean
Publisher: American Meteorological Society
Abstract: The annual mean and seasonal cycle in latent heating over the Indian Ocean are investigated using a simple, analytical ocean model and a 3D, numerical, ocean model coupled to a prescribed atmosphere, which permits interaction ...
Intrinsic Ocean–Atmosphere Variability of the Tropical Atlantic Ocean
Publisher: American Meteorological Society
Abstract: The tropical Atlantic variability is composed of three major patterns of significant importance for variability and predictability of climate in the Atlantic sector. They are the southern tropical Atlantic (STA) pattern ...