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RISThe Synoptic Verisimilitude of a Mid-Latitude Cyclone Generated in a Southern Hemisphere General Circulation Model
Publisher: American Meteorological Society
Abstract: A detailed examination has been made of the synoptic and physical behavior of an initially diffluent, large-amplitude but representative trough that formed in a Southern Hemisphere general circulation model after approximately ...
Three- and Four-Dimensional Variational Assimilation with a General Circulation Model of the Tropical Pacific Ocean. Part I: Formulation, Internal Diagnostics, and Consistency Checks
Publisher: American Meteorological Society
Abstract: Three- and four-dimensional variational assimilation (3DVAR and 4DVAR) systems have been developed for the Océan Parallélisé (OPA) ocean general circulation model (OGCM) of the Laboratoire d'Océanographie Dynamique et de ...
Sea Level Assimilation Experiments in the Tropical Pacific
Publisher: American Meteorological Society
Abstract: Idealized twin experiments with the HOPE ocean model have been used to study the ability of sea level data assimilation to correct for errors in a model simulation of the tropical Pacific, using the Cooper and Haines method ...
Initialization and Data Assimilation in Models of the Indian Ocean
Publisher: American Meteorological Society
Abstract: Numerical experiments have been conducted to investigate the effect of updating models of the Indian Ocean using simulated temperature (mass) and velocity data. Two models are used: a linear reduced gravity model with one ...
Impact of Ocean Observation Systems on Ocean Analysis and Seasonal Forecasts
Publisher: American Meteorological Society
Abstract: The relative merits of the Tropical Atmosphere?Ocean (TAO)/Triangle Trans-Ocean Buoy Network (TAO/TRITON) and Pilot Research Moored Array in the Tropical Atlantic mooring networks, the Voluntary Observing Ship (VOS) ...
Toward the Use of Altimetry for Operational Seasonal Forecasting
Publisher: American Meteorological Society
Abstract: The TOPEX/Poseidon and ERS-1/2 satellites have now been observing sea level anomalies for a continuous time span of more than 6 yr. These sea level observations are first compared with tide gauge data and then assimilated ...
A Simulation of Variability of ENSO Forecast Skill
Publisher: American Meteorological Society
Abstract: In many prediction schemes, the skill of long-range forecasts of ENSO events depends on the time of year. Such variability could be directly due to seasonal changes in the basic ocean-atmosphere system or due to the state ...
Three- and Four-Dimensional Variational Assimilation with a General Circulation Model of the Tropical Pacific Ocean. Part II: Physical Validation
Publisher: American Meteorological Society
Abstract: Three- and four-dimensional variational assimilation (3DVAR and 4DVAR) systems have been developed for the Océan Parallélisé (OPA) ocean general circulation model of the Laboratoire d'Océanographie Dynamique et de Climatologie. ...
Dynamics of the Eastern Surface Jets in the Equatorial Indian Ocean
Publisher: American Meteorological Society
Abstract: An hierarchy of ocean models is used to investigate the dynamics of the eastward surface jets that develop along the Indian Ocean equator during the spring and fall, the Wyrtki jets (WJs). The models vary in dynamical ...
How Predictability Depends on the Nature of Uncertainty in Initial Conditions in a Coupled Model of ENSO
Publisher: American Meteorological Society
Abstract: The predictability of any complex, inhomogeneous system depends critically on the definition of analysis and forecast errors. A simple and efficient singular vector analysis is used to study the predictability of a coupled ...