Abstract: A statistical procedure for forecasting the 500-mb contour height at grid points around the hemisphere is verified. Coefficients of Tschebycheff polynomials are used as predictors, and these are tested on an independent ...

Abstract: A study is made of the daily kinetic-energy spectra of meridional motions at 500 millibars at latitude 45°N for a three-months winter period. A pronounced characteristic of these spectra is the occurrence of a double ...

Abstract: A method is developed for the semi-objective analysis of layered cloud amounts and of heights of cloud bases and tops. The analyses are based on satellite television and infrared data, surface synoptic observations and ...

Abstract: A statistical procedure suitable for forecasting the hemispherical midtropospheric contour-height distribution is developed. Least-squares empirical filters are designed to yield the 24-hour 500-mb contour heights as ...