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RISObliquely Rotated Principal Components: An Improved Meteorological Map Typing Technique?
Publisher: American Meteorological Society
Abstract: A detailed analysis of obliquely rotated principal components as a map typing technique was performed. This type of transformation does not constrain orthogonality of the vectors, allowing the components or map types the ...
On the Application of Cluster Analysis to Growing Season Precipitation Data in North America East of the Rockies
Publisher: American Meteorological Society
Abstract: Cluster analysis (CA) has been applied to geophysical research for over two decades although its popularity has increased dramatically over the past few years. To date, systematic methodological reviews have not appeared ...
Relationships between the Definition of the Hyperplane Width to the Fidelity of Principal Component Loading Patterns
Publisher: American Meteorological Society
Abstract: When applying eigenanalysis, one decision analysts make is the determination of what magnitude an eigenvector coefficient (e.g., principal component (PC) loading) must achieve to be considered as physically important. Such ...
Statistical Differences of Quasigeostrophic Variables, Stability, and Moisture Profiles in North American Storm Tracks
Publisher: American Meteorological Society
Abstract: Three common synoptic storm tracks observed throughout the United States are the Alberta Clipper, the Colorado cyclone, and the East Coast storm. Numerous studies have been performed on individual storm tracks analyzing ...
Climatic Pattern Analysis of Three- and Seven-Day Summer Rainfall in the Central United States: Some Methodological Considerations and a Regionalization
Publisher: American Meteorological Society
Abstract: This paper presents the results of climatic pattern analyses of three- and seven-day summer (May?August) rainfall totals for the central United States. A range of eigenvectorial methods is applied to 1949?80 data for a ...
Seasonality in the Associations between Surface Temperatures over the United States and the North Pacific Ocean
Publisher: American Meteorological Society
Abstract: Thirty-one years of monthly data are used to evaluate the seasonal dependence of the associations between large-scale temperature anomalies over the United States and the North Pacific Ocean. Both station (grid-point) ...
Euclidean Distance as a Similarity Metric for Principal Component Analysis
Publisher: American Meteorological Society
Abstract: Eigentechniques, in particular principal component analysis (PCA), have been widely used in meteorological analyses since the early 1950s. Traditionally, choices for the parent similarity matrix, which are diagonalized, ...
Seasonal Tropical Cyclone Predictions Using Optimized Combinations of ENSO Regions: Application to the Coral Sea Basin
Publisher: American Meteorological Society
Abstract: his study examines combining ENSO sea surface temperature (SST) regions for seasonal prediction of Coral Sea tropical cyclone (TC) frequency. The Coral Sea averages ~4 TCs per season, but is characterized by strong interannual ...
Spatial Coherence of Monthly Precipitation in the United States
Publisher: American Meteorological Society
Abstract: Factor analysis and an orthogonal rotation to the varimax criterion are used to identify the synoptic-scale regions of the United States over which monthly precipitation amounts show the greatest spatial coherence. The ...