GFDL - Geophysical Fluid Dynamics Laboratory

Study Clouds in Weather Forecast Mode

part of a CPO funded CPT with NCEP, UW and JPL, we have performed initialized
forecasts experiments for the month of July 2013 with AM3 and a prototype
version of AM4. Parallel simulations were performed by NCEP using GFS. Many GCM
cloud biases become apparent even in relatively short simulations. As a result,
the use of initialized forecast simulations could be a useful tool for
evaluating clouds in high resolution models that are too expensive for routine
climate simulations.