Fleming Community Library

The development of atmospheric cyclones is studied from the viewpoint of the instability of large-scale wave perturbations superimposed on a zonal current.

The results of this research indicate three possible radiative induced mechanisms which contribute to the observed diurnal cycle in mass convergence.

The structure of the wind field of a tropical cyclone can be roughly described by three measurements: intensity (maximum wind), size (extent of the vortex), and strength (average wind speed of the vortex). This paper examines the climatology, structure and possible physical processes of tropical cyclones of different sizes.

The concept of "moist available energy," defined by Lorenz is applied to study the potential energy available for cumulus convection in a conditionally unstable atmosphere.

Satellite photographs during the summer months frequently reveal a weather situation in which strong convective development is observed over the Rocky Mountains and several hundred kilometers to the east of the mountains, while the region immediately to the lee is essentially cloud free. It is proposed that an orographically induced mesoscale wave phenomenon may produce this situation.

The results of a detailed analysis of 159 tornado proximity rawinsonde soundings are considered in Part I of this study. An extensive discussion of tornado features and a hypothesized physical model of tornado genesis is presented in Part II of this paper.

Recent work has suggested that large amounts of anthropogenic sulfate aerosol reduce riming efficiency in some mixed-phase clouds leading to a decrease in snowfall rate. This study investigates this aerosol effect in the Colorado Park Range for four winter storm cases in February 2005.