Proceedings of the NATO Advanced Study Institute, Bonas, France, July 13-31, 19821. Mesoscale Processes and Variability.- a) On the Dynamical Definition(s) of Mesoscale.- b) Mesoscale Variability of the Atmosphere.- 2. Regional and Cyclonic Scale Motions and Prediction Models.- a) Synoptic-Scale Forcing of Mesoscale Processes.- b) Cyclogenesis in the Lee of the Alps.- c) Several Methods for Initializing Mesoscale Forecast Models.- d) Initialization of Mesoscale Models: The Possible Impact of Remotely Sensed Data.- e) On the Effect of the Planetary Boundary Layer Parameterizations in Mesoscale Numerical Weather Prediction.- 3. Fronts.- a) Observations of Fronts.- b) Frontogenesis During the November 15, 1980 Storm of STREX.- c) An Energy-Theory for the Propagation of Gravity Currents.- 4. Mesoscale Instabilities.- a) Symmetric Instability.- b) Conditional Symmetric Instability: A Theory for Rainbands Within Extratropical Cyclones.- c) A Review of Meso-scale Disturbances in Cold Air Masses.- d) Radar Observations of Snowbands in Finland A Preliminary Report.- 5. Buoyancy (Gravity) Waves and Topographic Forcing.- a) Linear Theory of Internal Gravity Waves and Mountain Waves.- b) Mesoscale Mountain Waves: Theory and Observations.- c) Topographic Forcing.- d) The Morning Glory: A Nonlinear Wave Phenomenon.- e) The Formation of the Morning Glory.- 6. Buoyant Convection.- a) Cumulus Clouds: Early Aircraft Observations and Entrainment Hypotheses.- b) Cumulus Role in Tropical Circulations.- c) Cumulus Clouds: Interactions Between Laboratory Experiments and Observations as Foundations for Models.- d) Cumulus Clouds: Numerical Models, Observations and Entrainment.- e) Editors Comments on Dr. Simpsons. Lectures.- f) The Dynamics and Simulation of Organized Deep Convection.- g) B?nard Convection and Effects of Rotation.- h) Prediction of Severe Convection.- i) Dynamics of Rotating Thunderstorms.- j) A Case Study of Elevated Convection in an Unsaturated Large-scale EnvironlÓÈ