https://player.vimeo.com/video/673189371?h=e81907f8d7&badge=0&autopause=0&player_id=0&app_id=58479
The image on the right shows the effect of tfErosionSnow on the landscape, with a tfNoise filter applied.
This is set to Thermal Weathering Mode, by default.
The other Mode settings are: Hydraulic (2D Particles), Hydraulic (X-Particles), Coastal and Snow.
These other Mode settings are dealt with in more detail in their own dedicated pages.
Eroding a terrain with snow will smooth out the snowy areas while preserving the precise topology of the areas that remain free of snow.
Sometimes the snow effect looks better when using rather subtle values for Radius and Lift than, instead, computing it multiple times.
This parameter controls how often the snow erosion is computed.
The more iterations, the more snow you will have.