Research Article
Atmosphere-Cryosphere Coupled Model for Regional Climate Applications
Table 1
Comparison of PRCM land-surface scheme (LSS) with the snow land-surface model (SLM).
| ā | PRCM-LSS (current) | SLM (new) | Remarks |
| Surface parameterization | 3-layer soil and one-layer vegetation combined with snow | Multilayer soil and snow, one-layer vegetation | Limited by I.C. availability of soil | Snow albedo | Function of snow depth + background albedo | Snow albedo depends on zenith angle, snow depth, and grain size | Snow fraction of vegetation and bare ground | Soil temperature | Heat equation explicitly solves for | Enthalpy equation | Heat transfer due to water passing through medium considered | Soil moisture | No frozen soil physics | Soil freeze/thaw considered | Liquid water and soil ice can coexist | Canopy | Single sunlit vegetation | Both sunlit and shaded fractions of vegetation | ā |
|
|