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Periods of Linear Development of the ENSO Cycle and POP Forecast Experiments
Publisher: American Meteorological Society
Abstract: The results of the POP (principal oscillation pattern) analysis of the tropical Pacific wind stress data are presented. The wind stress data are smoothed and detrended in the same way as that used by Lamont's coupled ...
Fluctuating Flow through Straits of Variable Depth
Publisher: American Meteorological Society
Abstract: A model is presented for the fluctuating flow through a strait of nonuniform depth connecting two semi-infinite oceans. An analytical solution is found. The solution is applied to several depth profiles to study the effect ...
Two-Layer Geostrophic Dynamics. Part II: Geostrophic Turbulence
Publisher: American Meteorological Society
Abstract: In Part I of this series, generalized geostrophic equations were formulated for the two-layer system on a beta plane and over a flat bottom. Here numerical experiments with these equations are carried out to study freely ...
Geostrophic Turbulence and Emergence of Eddies beyond the Radius of Deformation
Publisher: American Meteorological Society
Abstract: Geostrophic turbulence has traditionally been studied within the framework of the classical, quasi-geostrophic equation. This equation, valid only when vertical displacements are weak, possesses a symmetry between cyclonic ...
Applying Neural Network Models to Prediction and Data Analysis in Meteorology and Oceanography
Publisher: American Meteorological Society
Abstract: Empirical or statistical methods have been introduced into meteorology and oceanography in four distinct stages: 1) linear regression (and correlation), 2) principal component analysis (PCA), 3) canonical correlation ...
Temperature Advection: Internal versus External Processes
Publisher: American Meteorological Society
Abstract: Local advection of temperature is the inner product of vector velocity and spatial gradient of temperature. This product is often integrated spatially to infer temperature advection over a region. However, the contribution ...
Two-Layer Geostrophic Dynamics. Part I: Governing Equations
Publisher: American Meteorological Society
Abstract: Although the quasigeostrophic formalism has been a cornerstone in oceanographic modeling for over four decades, studies have shown time and time again that other geostrophic, but non-quasigeostrophic, regimes can also ...
Westward Motion of Mesoscale Eddies
Publisher: American Meteorological Society
Abstract: Since the pioneering work of Nof, the determination of the westward drift of mesoscale eddies under the planetary (beta) effect has been a recurrent theme in mesoscale oceanography, and several different formulae have been ...
Skill Comparisons between Neural Networks and Canonical Correlation Analysis in Predicting the Equatorial Pacific Sea Surface Temperatures
Publisher: American Meteorological Society
Abstract: Among the statistical methods used for seasonal climate prediction, canonical correlation analysis (CCA), a more sophisticated version of the linear regression (LR) method, is well established. Recently, neural networks ...
Forecasting ENSO Events: A Neural Network–Extended EOF Approach
Publisher: American Meteorological Society
Abstract: The authors constructed neural network models to forecast the sea surface temperature anomalies (SSTA) for three regions: Niño 4, Niño 3.5, and Niño 3, representing the western-central, the central, and the eastern-central ...