Colorado Parks & Wildlife Research Library

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.

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.

The effects of irregular particles on scattering of radiation are considered using theoretical methods.

In this paper an analysis is performed on a "minor breakdown" of the stratospheric circulation which occurred during a period of general intensification of the polar vortex (15 November to 15 December 1958).

Composite upper-air soundings have been constructed relative to 1257 individual satellite-observed mesoscale trade wind cloud clusters in the western tropical North Pacific.

Data acquired during the 1972 Venezuelan International Meteorological and Hydrological Experiment is used to study the thermodynamic structure of the cumulus sub-cloud layer: its time dependence, and transformation by precipitation. A close relationship between lifting condensation level (LCL) and cloud base, and between LCL and the transition layer is found.

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.

In this study, the RAMS@CSU cloud-resolving mesoscale forecast model is run in a real-time configuration with a sophisticated microphysical package and multiple nested grids, in which the smallest grid has increased vertical resolution in the lower boundary layer. Using this configuration, two specific fog events are simulated in 3-D using initialization data with a horizontal resolution of 40 km.

Hurricane spawned tornadoes are most frequent at the time when hurricanes initially cross land and undergo rapid filling. This paper presents data composite information on all available rawinsonde and pibal reports surrounding this type of tornado genesis in the United States and Japan.