2012 Plenary Workshop Presentations State of the CESM Marika Holland, NCAR-CGD Is CESM the Best Earth System Model? Reto Knutti, NCAR-CGD The GRACE Satellite Mission: Using Time-Variable Gravity to Study the Earth John Wahr Predicting Land-Ice Retreat and Sea-Level Rise with CESM Bill Lipscomb How to use the task-parallel OMWG/AMWG diagnositic package Dave Brown