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The Pacific Meridional Mode as an ENSO Precursor and Predictor in the North American Multimodel Ensemble
Publisher: American Meteorological Society
Abstract: lthough modeling and observational studies have highlighted a robust relationship between the Pacific meridional mode (PMM) and El Niño?Southern Oscillation (ENSO)?namely, that the PMM is often a precursor to El Niño ...
Revisiting ENSO Coupled Instability Theory and SST Error Growth in a Fully Coupled Model
Publisher: American Meteorological Society
Abstract: coupled model framework is presented to isolate coupled instability induced SST error growth in the ENSO region. The modeling framework using CCSM4 allows for seasonal ensembles of initialized simulations that are utilized ...
The South Pacific Meridional Mode as a Thermally Driven Source of ENSO Amplitude Modulation and Uncertainty
Publisher: American Meteorological Society
Abstract: AbstractThis study seeks to identify thermally driven sources of ENSO amplitude and uncertainty, as they are relatively unexplored compared to wind-driven sources. Pacific meridional modes are argued to be wind triggers ...
Role of Ocean Advections during the Evolution of the Pacific Meridional Modes
Publisher: American Meteorological Society
Testing the Trade Wind Charging Mechanism and Its Influence on ENSO Variability
Publisher: American Meteorological Society
Abstract: During the positive phase of the North Pacific Oscillation, westerly wind anomalies over the subtropical North Pacific substantially increase subsurface heat content along the equator by “trade wind charging” (TWC). TWC ...
Ocean Dynamics are Key to Extratropical Forcing of El Niño
Publisher: American Meteorological Society
How Momentum Coupling Affects SST Variance and Large-Scale Pacific Climate Variability in CESM
Publisher: American Meteorological Society
Abstract: AbstractThe contribution of buoyancy (thermal + freshwater fluxes) versus momentum (wind driven) coupling to SST variance in climate models is a longstanding question. Addressing this question has proven difficult because ...
Pacific Meridional Modes without Equatorial Pacific Influence
Publisher: American Meteorological Society
Ocean Complexity Shapes Sea Surface Temperature Variability in a CESM2 Coupled Model Hierarchy
Publisher: American Meteorological Society