The Florida Area Cumulus Experiment (FACE) has developed as the logical extension of the successful series of single cloud experiments conducted by NOAA's Experimental Meteorology Laboratory (now the Cumulus Group of the National Hurricane and Experimental Meteorology Laboratory) over the Caribbean and Florida. Although the results of FACE studies have been painstakingly reported in the literature, conversations with colleagues have made it obvious that the empirical and theoretical foundations for this experiment are not well understood. Confusion still exists in the minds of some as to the rationale for FACE and its design. The need exists then for a detailed exposition of all aspects of the FACE effort for consideration and discussion by the scientific community. With this report we attempt to fulfill this need.

This book is the outcome of a workshop held at Park City, Utah, 23-25 May, 1984. It is a collection of papers focusing focuses on physics of precipitation formation in clouds and the response of clouds to glaciogenic seeding. This book documents the debates and discussions that surrounded the topic of glaciogenic seeding during the time of the workshop. It is interesting as a historical evidence of the scientific progress of that time.