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RISAn Equatorial Ocean Recharge Paradigm for ENSO. Part I: Conceptual Model
Publisher: American Meteorological Society
Abstract: A new conceptual model for ENSO has been constructed based upon the positive feedback of tropical ocean?atmosphere interaction proposed by Bjerknes as the growth mechanism and the recharge?discharge of the equatorial heat ...
An Equatorial Ocean Recharge Paradigm for ENSO. Part II: A Stripped-Down Coupled Model
Publisher: American Meteorological Society
Abstract: The conceptual recharge oscillator model intuitively established in Part I is derived from a dynamical framework of a Cane?Zebiak type model for tropical ocean?atmosphere interaction. A two-strip approximation to the ...
Low-Frequency Modes of Tropical Ocean Dynamics
Publisher: American Meteorological Society
Abstract: Basinwide very low-frequency (VLF) modes with zonal uniformly deepening and shoaling of the equatorial thermocline are found as solutions of linear shallow-water equations with the meridional basin boundaries under an ...
A Theory of Interdecadal Climate Variability of the North Pacific Ocean–Atmosphere System
Publisher: American Meteorological Society
Abstract: A linear coupled model for the atmosphere?upper-ocean system is proposed to highlight the mechanisms of decadal to interdecadal climate variability in the North Pacific. In this model, wind stress anomalies over the North ...
Modes of Interannual Tropical Ocean–Atmosphere Interaction—a Unified View. Part III: Analytical Results in Fully Coupled Cases
Publisher: American Meteorological Society
Abstract: The parameter-space dependence of the eigenmodes of the coupled tropical ocean-atmosphere system, linearized about a climatological basic state, is further examined in a stripped-down intermediate coupled model using the ...
A Moist Linear Baroclinic Model: Coupled Dynamical–Convective Response to El Niño
Publisher: American Meteorological Society
Abstract: A newly developed, linear baroclinic model (LBM) and its application to the tropical ENSO teleconnection is described. The model, based on primitive equations linearized about the observed, zonally varying basic state in ...
A Study of the Impact of Off-Equatorial Warm Pool SST Anomalies on ENSO Cycles
Publisher: American Meteorological Society
Abstract: Concurrent with most large El Niño events, cold sea surface temperature (SST) anomalies are observed over the western Pacific warm pool region (WPWP). Observational evidence that SST anomalies that form in the off-equatorial ...
Dynamical Prototype of the Arctic Oscillation as Revealed by aNeutral Singular Vector
Publisher: American Meteorological Society
Abstract: Origin of the Arctic Oscillation (AO) was explored from a dynamical perspective, using a primitive equation model linearized about the observed winter climatology. In order to obtain a leading low-frequency mode of the ...
Interdecadal Variability in a Zonally Averaged Ocean Model: An Adjustment Oscillator
Publisher: American Meteorological Society
Abstract: A meridional-plane, hemispherical ocean model is developed to study interdecadal variability of the thermohaline circulation (THC). The model differs from previous formulations of zonally averaged ocean models by using a ...
Two Leading ENSO Modes and El Niño Types in the Zebiak–Cane Model
Publisher: American Meteorological Society
Abstract: AbstractModern instrumental records reveal that El Niño events differ in their spatial patterns and temporal evolutions. Attempts have been made to categorize them roughly into two main types: eastern Pacific (EP; or cold ...