Snow is in a continual state of transformation, from new crystals to melted water. Every form of energy input (solar or wind energy, or the mechanical work of a groomer, or skis, on the snow) causes a certain amount of transformation. The response of the snow to the mechanical work that the skis perform on it is perhaps the biggest factor determining the optimal ski/grind/wax set-up. Understanding of energy regimes requires a slightly different way of thinking about conditions, but provides excellent guidelines for making distinctions and decisions.
Condition
Energy Response
Feeling
Crystals
Temp
Moisture
Wax
Green
Snow absorbs little or no energy. Very resistant to change or transformation.
- Gritty
- Sandy
- Slow
Blue
Snow absorbs energy without releasing significant moisture. Crystals transform easily.
- Silky
- Perfect
Violet
Snow releases moisture and develops freezing glaze.
- Aggressive
- Icy
- Fast
Red
Snow releases free moisture and develops wet glaze.
- Greasy
- Slippery
- Glazy
Yellow
Snow is saturated – breaks and softens with energy or work input.
- Sucky
Next you should read about transitions.