Sulfur chemistry has been incorporated in the NCAR CCM in an internally consistent manner with other parameterizations in the model. The model calculates mixing ratios of DMS, SO 2 , SO 2? 4 , and H 2 O 2 and cloud and rain water pH. Processes that control the mixing ratio of these species include the emissions of DMS and SO 2 , transport of each species (through resolved-scale advection and su...

The atmospheric moisture budget is evaluated for the region 708N to the North Pole using reanalysis datasets of the European Centre for Medium-Range Weather Forecasts (ECMWF; ERA: ECMWF Re-Analysis) and the collaborative effort of the National Centers for Environmental Prediction (NCEP) and the National Center for Atmospheric Research (NCAR). For the forecast fields of the reanalyses, the ERA a...