2011 WG Meeting Presentations | PCWG PCWG Update and Meeting Overview Co-chairs Characterizing the Present-day Arctic Atmosphere in CCSM4 Gijs de Boer Late 20th Century Simulation of Arctic Sea-ice and Ocean Properties in CCSM4 Alexandra Jahn, NCAR-CGD 21st Century Arctic Climate Change in CCSM4 Steve Vavrus Interannual to Multidecadal Arctic Sea Ice Extent Trends in a Warming World Jen Kay, NCAR-CGD Impacts of Shifting Seasonality on Arctic Ocean Carbon and Nutrient Cycles Matt Long CFCs in the South Pacific in CCSM4 Corinne Hartin Antarctic Sea Ice Variability in CCSM4 Preindustrial Control Laura Landrum, NCAR-CGD Late 20th Century Antarctic Climate Change in CCSM4 David Schneider, NCAR-CGD Internal Variability in Simulated 21st Century Arctic Sea Ice Evolutions: Climate Forcing and Response Justin Wettstein Gases in Ice Scott Elliot Regional Arctic Climate Model (RACM): Overview and Selected Results Wieslaw Maslowski, Matthew Higgins Climate Uncertainty Quantification Project Curt Covey Sea Ice in CESM / CAM5 Simulations Dave Bailey, NCAR-CGD Inception of the Laurentide Ice Sheet. The North Pacific Ocean Connection Francis Otieno Spatial Characterization of Sea Ice and Relevance of Spatial Roughness for Energy Exchange and Melting Ute Herzfeld Mechanisms of Melt Pond Control on Arctic Sea Ice Christopher Polashenski Melt Ponds in CICE Elizabeth Hunke Salinity Modeling in CICE Adrian Turner Salinity Modeling in CICE from a Biogeochemistry Perspective Nicole Jeffrey High Latitude Land Model Developments Dave Lawrence, NCAR-CGD Interior Mixing CPT Update Markus Jochum, NCAR-CGD Sea Ice Heterogeneity CPT Update Marika Holland, NCAR-CGD