I am on the governing board and a past director (2006-2011) of the University of Washington Program on Climate Change, which organizes graduate courses, seminars, a summer institute, and research on climate science and its relevance to our society and future.
My group developed the parameterizations of shallow cumulus convection used in the cutting-edge versions of two leading US climate models, the National Center for Atmospheric Research Community Atmosphere Model, version 5 (CAM5), and the Geophysical Fluid Dynamics Laboratory Atmosphere Model, version 3 (AM3). We also developed the turbulence parameterization used in CAM5, and have versions of both schemes for the Weather Research and Forecast (WRF) regional modeling system.
With Joao Teixeira of JPL, I co-lead a NOAA Climate Process Team on the Stratocumulus to Cumulus Transition, aimed at improving the representation of low cloud cover in the NCEP GFS/CFS forecast models and of low cloud and aerosol-related processes in the NCAR CESM.
With Minghua Zhang of Stony Brook, I am co-leading a joint subproject of the Global Atmospheric System Study (GASS, an outgrowth of GCSS) and the Cloud Feedbacks Model Intercomparison Project (CFMIP) to use a column-oriented approach to compare subtropical boundary layer cloud feedbacks on climate change between single column versions of climate models and large-eddy simulation models. This is called the CFMIP-GCSS Intercomparison of LES and Single-Column Models (CGILS). I am a lead author for the cloud feedbacks section of the IPCC Fifth Assessment WG1 report.