2012 BGCWG Workshop Presentations Updates on BGCWG Activities Keith Lindsay, NCAR-CGD Biogeochemistry in the CESM1 ocean model Keith Moore Ocean carbon cycle feedbacks in the tropics from CMIP5 models Jerry Tjiputra Impacts of sea ice on the iron cycle and marine ecosystems Shanlin Wang Biogeochemistry in CICE Nicole Jeffrey Soil C biogeochemistry Will Wieder, NCAR-CGD Estimating N2O using DNDC in CLMCN Eri Saikawa River N export: A constraint on mineral N losses in the CLM-CN Cynthia Nevison