Model Name | Retention/percolation | Refreezing | Density | Heat capacity/conductivity | Vapor transfer | Heat transfer between snowpack and underlying soil | Heat convected by rainfall or snowfall |
---|---|---|---|---|---|---|---|
Australian | N/a | No | Fixed | Fixed | No | No | No |
BAIM | Liquid water retention is explicitly treated. Water in excess of the maximum value that snow layer can hold drains away and flows down to the soil surface without any time lag. | No | Changing | Changing | No | Yes | Yes |
BASE | No | yes (optional) | changes | changes (optional) | No | yes | can do (doesn't seem to really matter) |
BATS | No | Yes | Changing | Changing | No | No | No |
CLASS | Yes | Yes | Changing | Changing | No | Yes | Yes |
CROCUS | Yes | Yes | Changing | Changing | NOT EXPLICITELY, "effective conduction" used | Yes | Yes |
DARSSM | No | Yes | prognostic variable | heat capacity and conductivity are function of snow density which is a prognostic variable | no | yes, this is the combined snow and soil model | yes |
DHSVM | liquid water retention is modeled as a simple reservoir. Until the liquid water storage capacity is met, no percoloation to the pack layer or the soil surface is allowed | No | Snow density is not calculated, depth of snow is not a state variable, only the SWE is | fixed | yes | No | yes |
ECHAM (Duemenil) | No | No | Fixed. | Fixed. | No | YES | No |
ECHAM (Loth) | Yes | indirectly | prognostic variable | heat capacity fixed; conductivity: function of density | YES | YES | YES |
GFDL Snow Model | No | No | Fixed | Fixed | No | - | No |
Hadley Centre/UKMO GCM LSM | No | No | Fixed | Fixed | No | yes | No |
HBV | No, the water storage is just intended to delay/reduce outflow compared to melting | No | Snow density (or depth) is not represented, only SWE is considered | No | No | No | No |
IAP94 | Yes | Yes | Changing | Changing | Yes | Yes | Yes |
IHACRES Snow Model | No | No | We compared the results of modelling with measured Snow Water Equivalent, thus, the snow density is already taken into account during the measurements | N/A | No | No | N/A |
INM | Yes | No | Fixed | fixed | No | No | Yes |
ISBA | No | No | Changing | Changing | No | only in its "offline" version | No |
ISBA-ES | Yes | Yes | Changing | Changing | Yes | Yes | Yes |
LSMCS | Yes | Yes | Changing | Changing | No | Yes | Yes |
MAPS/RUC SVS | No | No | Fixed | Fixed | No | Yes | The model considers heat convected by rain |
MAR | Yes | Yes | Changing | Changing | No; effective conduction used | Yes | Yes |
Mosaic | No | No | Fixed | Fixed | No | No | No |
MRI-CGCM GHM | No | No | Fixed | Fixed | No | Yes | No |
MU-SNW | No | No | Fixed | Fixed | No | No | No |
NCEP/OH/OSU CAPS | No | No | Fixed | Fixed | No | Yes | Yes |
NCEP/OH/OSU LSM | Yes | Yes | Changing | Changing | No | Yes | Yes |
NWSRFS SNOW-17 | - | - | - | - | - | - | - |
RAMS Snow Component | No | No | No explicit specification of density | Fixed heat capacity; conductivity not specified | No | Snowpack and immediately underlying soil are considered to be a single heat reservoir | No |
RGM | YES | NYI | fixed | fixed | NYI | NYI | NYI |
SEMS | Yes | Yes | Changing | Changing | No | No | No |
SHAW | Liquid water retention is explicitly treated, but not percolation | Changes in thermal properties due to meltwater refreezing are considered, but hydraulic properties are not | Changing | Changing | YES | YES | YES |
SLURP | No | No | model uses only snow water equivalent | heat content not tracked | No | yes | No |
SNAP | Yes | The version supplied to the Army now has constant properties, but current work on the model involves layering and property evolution | Changing | Changing | No | Yes | Yes |
SNOWPACK | Yes | Yes | Changing | Changing | Not explicitely, but implicitely using ET and TG metamorphis | Yes | Implicitely using an initial snow temperature, No rain at present |
SNTHERM | Yes | Yes | Changing | Changing | Yes | Yes | Yes |
SNTHERM (Davis) | - | - | - | - | - | assumed semi-infinite snow. Deep enough for no transfer at bottom boundary | - |
SNTHERM.ver4 | - | - | - | - | - | assumed semi-infinite snow. Deep enough for no transfer at bottom boundary | - |
SOIL | Water transfer within the snowpack is not considered. A certain retention capacity of the snowpack is assumed. When it is exceeded the water is infiltrating to the soil or running of on the soil surface | No | changing | changing | No | Yes | No |
SSMI DSCM | Yes | Yes | - | - | - | - | - |
SPONSOR | Yes | Thermal properties are changing according to the snow density transformations | Changing | Changing | No | yes | The heat convected by liquid rain is considered; the heat brought by snowfall is not accounted |
SPS (CAPS-LLNL) | No | No | fixed | changes as a function of snowdepth | No | No | Yes |
SSiB | No | Yes | Fixed | Fixed | No | Yes | Yes |
TSCM1 | Yes | No | Fixed | Fixed | No | Yes | No |
TSCMM | Yes | No | Changing | Changing | No | Yes | Yes |
UEB | Yes | No | Fixed | Fixed | No | Yes in a rough way | Yes |
(Prepared by Zong-Liang Yang and Guo-Yue Niu)