SnowSimulation Node

No description available

Category

Hydrology

Inputs

Name	Type	Description
depth_map	VirtualArray	Optional depth modulation map controlling spatial variation of snow deposition.
elevation_in	VirtualArray	Input terrain elevation used as the base surface for snow simulation.
melting_map	VirtualArray	Optional spatial melting factor in [0,1] controlling local snow removal.
snow_depth_in	VirtualArray	Optional initial snow thickness used as the starting state of the simulation.

Outputs

Name	Type	Description
elevation	VirtualArray	Output elevation including terrain and accumulated snow.
snow_depth	VirtualArray	Final snow thickness after accumulation, transport, and melting.

Parameters

Name	Type	Description
Predefined Depth Map	Enumeration	No description
Simulation Duration	Float	Total simulated time. Higher values allow snow to settle, creep, and stabilize more.
Depth Stiffening	Float	Controls how much snow becomes resistant to motion as depth increases. Higher values make thick snow more stable.
Depth Repose Boost	Float	Increases the effective repose angle with snow depth, allowing deep snow to maintain steeper slopes.
Melting Strength	Float	Global multiplier for snow melting. Higher values cause snow to thin or disappear faster in melting areas.
Avalanche Strength	Float	Controls the speed and intensity of snow avalanches when slopes exceed the repose angle.
Thermal Creep Strength	Float	Controls slow, diffusive snow motion below the repose angle, producing smooth, rounded snow surfaces.
Enable Thermal Relaxation	Bool	Enables sub-repose thermal smoothing, allowing snow to slowly collapse and relax on gentle slopes.
Rebase Snow to Zero	Bool	Shifts the snow field so its minimum value starts at zero while preserving relative snow thickness.
Snow Amount	Float	Total amount of snow deposited during the simulation. Controls overall snow coverage and thickness.
Solver Stride	Integer	Grid sampling stride used by the solver. Higher values process the snow field at a lower spatial resolution, reducing computation time at the cost of fine detail.
Base Repose Slope	Float	Base repose angle of snow. Higher values allow steeper slopes before snow starts to slide.
Thermal Repose Ratio	Float	Controls how strongly thermal creep depends on the repose angle. Lower values produce smoother snow on shallow slopes.

Example

Corresponding Hesiod file: SnowSimulation.hsd. Use [Ctrl+I] in the node editor to import a hsd file within your current project.

Note

Example files are kept up-to-date with the latest version of Hesiod. If you find an error, please open an issue.