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AngusP08
1357032.  Wed Aug 26, 2020 12:56 pm Reply with quote

I'm sure there are probably other facts related to snow so feel free to add more.

There is a 'type' of snow known as watermelon snow. This red-tinted form of snow is also known as pink snow, snow algae, red snow, and even blood snow, and has been spotted in mountain ranges and on continents around the world including the Rockies, the Himalayas, the Arctic, and Antarctica.

It occurs when the sun heats up and snow starts to melt producing the right combination of freezing temperatures and the presence of liquid which creates the ideal environment for a particular type of algae, Chlamydomonas nivalis, to bloom. When these green organisms receive large amounts of sun, they produce a natural form of sunscreen that colours snow a pinkish red.

Whilst the effect may be impressive, the change in colour affects the snow's albedo, darkening the surface and leading to faster rates of melting. In fact, a study looking into the microbes in summer snow found that the same algae that produce watermelon snow appear to be found globally and the scientists behind the study recommended that climate models start considering the effects on the snow and ice melt of these microbes and algae.

Sources:
https://en.wikipedia.org/wiki/Watermelon_snow
https://www.nytimes.com/2016/06/23/science/watermelon-snow-global-warming.html
https://www.nature.com/articles/ncomms11968

 

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