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RISInterannual Sea Level Variations in the Tropical Indian Ocean from Geosat and Shallow Water Simulations
Publisher: American Meteorological Society
Abstract: Sea Level variations of the Indian Ocean north of 20°S are analyzed from Geosat satellite altimeter data over April 1985?September 1989. These variations are compared and interpreted with numerical simulations derived from ...
Assimilation of Geosat Altimetric Data in a Nonlinear Shallow-Water Model of the Indian Ocean by Adjoint Approach. Part II: Some Validation and Interpretation of the Assimilated Results
Publisher: American Meteorological Society
Abstract: This paper examines the results of assimilating Geosat sea level variations relative to the November 1986?November 1988 mean reference, in a nonlinear reduced-gravity model of the Indian Ocean. Data have been assimilated ...
El Niño–La Niña Events Simulated with Cane and Zebiak's Model and Observed with Satellite or In Situ Data. Part I: Model Data Comparison
Publisher: American Meteorological Society
Abstract: The Zebiak and Cane model is used in its ?uncoupled mode,? meaning that the oceanic model component is driven by the Florida State University (FSU) wind stress anomalies over 1980?93 to simulate sea surface temperature ...
El Niño-La Niña Events Simulated with Cane and Zebiak's Model and Observed with Satellite or In Situ Data. Part II: Model Forced with Observations
Publisher: American Meteorological Society
Abstract: Various parameterizations derived from the observations are tested and proposed to improve the skill of the Cane and Zebiak's model in simulating the reality. The model is forced by FSU winds over the period 1980?1993. In ...
Fitting Dynamic Models to the Geosat Sea Level Observations in the Tropical Pacific Ocean. Part I: A Free Wave Model
Publisher: American Meteorological Society
Abstract: Free, equatorially trapped sinusoidal wave solutions to a linear model on an equatorial beta plane are used to fit the Geosat altimetric sea level observations in the Tropical Pacific Ocean. The Kalman filter technique is ...
Using Data and Intermediate Coupled Models for Seasonal-to-Interannual Forecasts
Publisher: American Meteorological Society
Abstract: This paper provides a detailed illustration that it is beneficial for ENSO forecasting to improve in priority the model parameterizations, instead of increasing only the consistency of the initial conditions with the coupled ...
Observation of Long Equatorial Waves in the Pacific Ocean by Seasat Altimetry
Publisher: American Meteorological Society
Abstract: Synoptic maps of the mesoscale dynamic topography in a band between 7.5°N and 7.5°S in the Pacific Ocean are drawn from Seasat altimeter data. They show a set of eddies 600 km in diameter and 15?20 cm in amplitude moving ...
Interaction between Near-Annual and ENSO Modes in a CGCM Simulation: Role of the Equatorial Background Mean State
Publisher: American Meteorological Society
Abstract: A 260-yr-long coupled general circulation model (CGCM) simulation is used to investigate the interaction between ENSO mode and near-annual variability and its sensitivity to the equatorial background mean stratification ...
On the Role of Meridional Wind Anomalies in a Coupled Model of ENSO
Publisher: American Meteorological Society
Abstract: The role of the meridional wind anomalies on the El Niño?Southern Oscillation as simulated by a simple coupled tropical Pacific ocean?atmosphere model is investigated. It is found that these anomalies play a key role in ...