This study examines the location and development of turbulence in the morning hours of boundary layer development over mountainous terrain. Four case study days are presented which illustrate important features on two types of days observed in the mountains of central Colorado.

The objective of this report is to determine the relationship between snow crystal and ice nuclei concentrations for similar crystal formation and nuclei activation temperatures.

A study of ozone chemistry and meteorological processes occurring in the eastern North Pacific stratocumulus regime. This climatological regime is characterized by widespread, persistent low cloud and an air history that does not include contact with continents for many days. Since both ozone and important in the earth-atmosphere energy balance, the processes studied here are important in the system interactions that govern climate.

The structure of hail-producing and no hail-producing atmosphere is studied by examining rawinsondes launched at New Raymer, Colorado, in the summer of 1967. It is found through examination of mean soundings and the convective condensation level and level of free convection that an ample low-level moisture supply is important for hailstorms to form.

A time-dependent, hemispheric, primitive-equation numerical model is constructed to test Hines' (1974) hypothesis that solar variations induce changes in the distributions of basic state variables at high levels in the atmosphere, and thus induce changes in planetary-scale wave structure at lower atmospheric levels. This mechanism was proposed to explain apparent atmospheric responses to solar activity.

The purpose of this work is to determine: (1) if the patch model of adsorption of water vapor on pure silver iodide is valid at nucleation; (2) if the energetics of nucleation are comparable to the energetics of adsorption; (3) the mechanism of nucleation on pure silver iodide; and (4) how nucleation observed by adsorption methods compares to cloud chamber studies.

By combining surface, satellite, radar, and photographic data each scale of cyclone is investigated with emphasis on determining mechanisms by which they intensify or evolve, especially through scale interactions.