An introduction to the phenomenology and dynamics of large-scale atmospheric variations having time scales of a week and longer. Using papers from the recent scientific literature and real-time analyses, we will overview the basic characteristics, underlying physics, and current status of a number of large-scale atmospheric phenomena. Topics will include weather regimes, storm track variability, stratospheric polar vortex variability, El Nino-Southern Oscillation, teleconnections, monsoon circulations, the Arctic and Quasi-Biennial Oscillations, and stratosphere-troposphere coupling. The class format will include reading assignments and student presentations.