Abstract: A statistical analysis of the daily displacement and size of cyclones and anticyclones appearing over the Northern Hemisphere for a 2-yr period is described. The longitudinal motion of both types of vortices is inversely ...

Abstract: A study was made of the surface occurrence of convective activity during the late spring and summer months for an eight-year period over a region of the central United States. It was found that there was a significant ...

Abstract: tract

Abstract: No Abstract Available.

Abstract: A statistical analysis is applied to 63 years of daily United States precipitation data to determine whether a tendency exists for rainfall anomalies to occur near specific calendar dates. The results clearly indicate no ...

Abstract: A number of different analyses are used to examine 63 years of daily United States rainfall data to determine whether a suggested periodicity of 18 cycles per year exists. Although a slight tendency was found for such a ...

Abstract: No abstract available.