🌨️ Snowstorm Lab: Blowing-Snow Saltation Threshold, Whiteout Visibility and Snow-Fence Drifts

Raise the wind until snow starts to move, then watch saltation and suspended blowing snow cut visibility toward a whiteout. Wind profile, temperature-dependent threshold, Rouse concentration profile, extinction-based visibility and a Tabler-type snow-fence capacity experiment, with six independent numerical checks.