Snow Card Inputs - Optional
From Gsshawiki
The following tables list all project file cards pertaining to snow accumulation, melt, and melt-water transport. The Hybrid Energy Balance method is the default snow melt method (no additional card required to run this method).
Cards calling which snow melt algorithm to use
Melt Method | Card | Description |
---|---|---|
Hybrid Energy Balance | default (no card) |
The Hybrid Energy Balance Method for melting snow is the default, so it is utilized if NWSRFS_SNOW and EB_SNOW are not present in the Project File. |
Temperature Index | NWSRFS_SNOW |
The Temperature Index Method for melting snow is utilized if this card is present in the Project File. |
Energy Balance | EB_SNOW |
The Energy Balance Method for melting snow is utilized if this card is present in the Project File. |
Cards Associated with All Three Melt Methods
Card | Argument | Units | Description |
---|---|---|---|
NWSRFS_SCF ##.## |
real | fraction | Snow Cover Factor (adjusts for mis-readings in the gage data (see Continuous:Snowfall_Accumulation_and_Melting). |
SNOW_TEMP_BASE ##.## |
real | °C | Base Temperature (MBASE) at which melt in snow begins |
SNOW_SWE_FILE ''File |
real | File | Negative Melt Factor. |
NWSRFS_FUA ##.## |
real | Empirical Wind Function Factor. | |
NWSRFS_PLWHC ##.## |
real | % | Percent Liquid Water Holding Capacity. |
Cards Associated with BOTH Hybrid Energy Balance and Temperature Index Methods
Card | Argument | Units | Description |
---|---|---|---|
NWSRFS_FR_USE ##.## |
real | fraction | Specifies the fraction of precipitation in the form of rain when temperature drop below MBASE. |
NWSRFS_TIPM ##.## |
real | Snow Cover Thermal Gradient | |
NWSRFS_NMF ##.## |
real | mm/°C/dt | Negative Melt Factor. |
NWSRFS_FUA ##.## |
real | Empirical Wind Function Factor. | |
NWSRFS_PLWHC ##.## |
real | % | Percent Liquid Water Holding Capacity. |
GSSHA User's Manual
- 3 Project File
- 3.1 Required Inputs
- 3.2 Mapping Table – Optional
- 3.3 Overland Flow – Required
- 3.4 Interception – Optional
- 3.5 Rainfall Input and Options – Required
- 3.6 Infiltration – Optional
- 3.7 Channel Routing – Optional
- 3.8 Continuous Simulations – Optional
- 3.9 Saturated Groundwater Flow – Optional
- 3.10 Soil Erosion – Optional
- 3.11 Constituent Transport – Optional
- 3.12 Subsurface Drainage Network – Optional
- 3.13 Output Files – Required