AMWG Experiments

1. Double ITCZ and extended cold tongue
   • Donner convection
     cam08i vs cam2.0
     cam08i vs obs
     
   • Alternative closure schemes
   
   
2. Underestimation of tropical variability
   • variability diagnostics
   • Donner convection
   
   
3. Overestimation of land surface temperatures in winter
   • Reduce cloud cover in winter by large amount plots
   • Increase snow fraction coverage to change surface albedo (LMWG)
     plots
   
   
4. Underestimation of tropical tropopause temperatures
   • Modifications to prognostic water and cloud amount plots
   
   
5. Biases in the Eastern Pacific
   • New Bretherton PBL scheme
   • Response of ocean to specified surface stress fields
   
   
6. Erroneous cloud response to SST changes
   • Increase IWP in high clouds to increase SW
   • Test sensitivity to particle size
   • Introduction of prognostic cloud phase