LSM changes (more) relevant to cold season

• For patchy snow cover, changes to parameters:

  • snow cover fraction (less snow depth for 100% cover)
  • snow albedo (yields higher)
  • surface skin temperature (higher via non-snow cover)
  • snow sublimation (reduced)

• Surface emissivity (for snow only):

  • Lup = s  T4, s = 1.0, 0.95, 0.90.

• PBL: in very stable conditions when PBL depth diagnosed as lowest Eta model level, impose lower limit on eddy diffusivity up to (and one level above) inversion height (positive impact previously shown)