Rain on snow across the tundra

Rain-on-snow is examined as a sequence of precipitation, refreezing, and changing access to forage, not as a uniform Arctic event. The essay distinguishes a weather-station total from the hardness, position, extent, and persistence of the crust encountered by reindeer or caribou. Animal consequences depend on alternative forage, movement routes, herd condition, timing, and later weather, so an illustrative sighting cannot establish their severity. It sets out the contextual observations needed to connect snow structure with those consequences and gives community knowledge an explicit governance setting. A further distinction separates urgent local responses from claims about long-term frequency or intensity. Comparable definitions, coverage, and sustained observations are necessary before station, satellite, model, or field records can support a trend.