Why snow is not only white?

In 1955, the people of California were very surprised to see snow... green! In 1969, the Swedes surprised the black snow. In our country, the colour of snow is also not uncommon. Eyewitnesses in different periods, and observed snow cover yellow, cream and pink flowers. What was the reason to change the usual us white as snow?

Most of the staining the snow in different colors answer dust and particles entering the cloud. So, in 1892 in the Ukraine, fell black snow, which was caused by the storm, raised earthen dust. Sometimes the atmosphere in a severe jet streams that carry sand from the desert at a considerable distance. In 2004, the yellow snow fell in Switzerland, Austria, Germany and Poland. The reason for this was a sand storm in Saudi Arabia.

In the highlands and polar fields can be found red and pink snow. The reason for this is the subspecies Alga Chlamydomonas snow (Chlamidomonas nivalis). This Glagoleva algae blooms, when the thermometer dropped below zero. Chlamydomonas snow is not the only type of algae that gives the snow color. Her other "brothers" can color the snow green, yellow, brown and blue shades. Thus, according to mountaineers and local residents in the Sierra Nevada (California) pink snow tastes like watermelon ice cream.

Translated by «Yandex.Translator»