The book covers topics confined to dynamical coupling processes in the Earth's lower and middle atmosphere in order to examine progress in a relatively focused area. Nevertheless, the results span spatial scales from molecular to global, and temporal scales from seconds to decades. The unifying theme in all areas is the strong interactions occurring between various scales of motion. The articles represent contributions to a NATO Advanced Research Workshop held in Norway in May 1992. They are written by some of the leading experts in the field and are of interest to specialists in the field of atmospheric dynamics as well as to students at graduate and doctorate levels.