2012 WAWG Workshop Presentations WACCM development updates Mike Mills, NCAR CMIP5 results Dan Marsh, NCAR Modeling polar ozone loss at the University of Colorado Matthias Brakebusch Impacts by solar irradiance and auroral EPP in WACCM Ethan Peck Microphysical modeling of polar stratospheric clouds Yunqian Zhu Day-to-day nonmigrating tidal variability simulated by WACCM-X Nicholas Pedatella Study of quasi-biennial oscillation using WACCM Hanli Liu