Abstract: A hierarchical clustering algorithm using Ward?s method has been applied to the 500-hPa geopotential height field in the Pacific?North American sector. In contrast to previous clustering studies that measure distance between ...

Abstract: Despite overall improvements in numerical weather prediction and data assimilation, large short-term forecast errors of sea level pressure and 2-m temperature still occur. This is especially true for the west coast of North ...

Abstract: The decrease in mountain snowpack associated with global warming is difficult to estimate in the presence of the large year-to-year natural variability in observations of snow-water equivalent (SWE). A more robust approach ...