From the point of view of science dealing with the study of snow and ice - glaciology, snow can be categorized in various ways.In its crystalline structure of the snow is divided into such types: snow crystals (small single crystals of hexagonal shape, the size of 3-4 mm in diameter), all known snowflake ("grappled" with each other crystals that can form a variety of beautiful forms), frost(frozen water, not crystallizing in the air and on the surface on which it falls), cereal or "soft hail" (frozen but not crystallize drops of water) and the usual degree, which is a drop of water in the frozen ice.
The intensity of falling snow can be divided into the following types: light snow (visibility is not less than 1000 meter
s), moderate snow (500-1000 m), heavy snowfall or blowing snow (visibility from 100 to 500 meters).In a strong wind, snow enhancement, there is a snow storm or a blizzard.
professional and sports classification
The most common classification of snow resorted to professional mountain climbers and athletes involved in skiing and snowboarding, it is based on the density and the condition of snow already on the ground.
most weightless and easy is fresh snow.In the sports environment, it is also called "tselyakom", "virgin" or "feather".For most athletes, this kind of snow is considered ideal, because through it easily and smoothly roll and you can not be afraid of hitting a hard surface.The best option virgin snow sports is considered a "pow", the smallest and very light snow that falls only in the mountains.
at zero temperature and snow melts together with water forms appeared sleet or "slush".At constant "trampling" of the surface of virgin snow, hard snow or "kruder" - dense pressed mass.
most unfortunate for skiing deemed such types as the snow crust (melted and re-frozen crust of snow) and ice (tayavshy repeatedly freezing and snow).
can also select such as the firn snow formation, which is a mixture of snow and ice occur mainly in the early spring as a result of a very strong seal and snowfields - a very dense snow-covered ice.The latter can be found only in the mountains, where it can not melt away a few years.If a sufficiently large snowfield, then over time it can turn into a glacier.