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How is Artificial Snow Made?

Michael Anissimov
Updated May 21, 2024
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A number of tourist-oriented cities in temperate or hot areas contain large, insulated buildings filled with artificial snow for people to ski on. These artificial snow slopes can be found in Germany, Japan, and even some Middle Eastern countries, such as Dubai, in the United Arab Emirates. These structures produce realistic looking and feeling snow for snowboarding and skiing year-round. Artificial snow is also produced in the entertainment industry for use as a prop or backdrop.

How is it possible to produce artificial snow? Several components are necessary. First, the wall of the structure containing the snow must be insulated extremely well. Double-skinned insulated walls are commonly used. In some artificial snow slopes, the insulation is so good that it would take weeks for the snow to melt, even if all cooling systems were turned off.

Snow is created at the roof of the building where "snow guns" use compressed air to fire tiny ice pellets (10 micron diameter) into a cloud of atomised liquid water. Giant refrigeration systems reduce the overall temperature of the interior to -8°C (17.6°F). Sometimes other seed materials besides ice pellets are used, such as magnesium ions, calcium, or clay particles or organics. Any small impurities will work, to a certain extent. The seed material that makes the most realistic looking artificial snow is a freeze-dried protein powder derived from the bacteria Pseudomonas syringae called Snomax®, but ice pellets are used most frequently.

As the seed particles travel through the water vapor and down towards the floor, they accumulate snow crystals and turn into artificial snow. The idea is for all the particles to freeze before they hit the ground. Underneath the floor, systems using glycol and liquid ammonia cool the floor further, creating an ideal padding of artificial snow that closely simulates natural conditions.

All The Science is dedicated to providing accurate and trustworthy information. We carefully select reputable sources and employ a rigorous fact-checking process to maintain the highest standards. To learn more about our commitment to accuracy, read our editorial process.
Michael Anissimov
By Michael Anissimov
Michael Anissimov is a dedicated All The Science contributor and brings his expertise in paleontology, physics, biology, astronomy, chemistry, and futurism to his articles. An avid blogger, Michael is deeply passionate about stem cell research, regenerative medicine, and life extension therapies. His professional experience includes work with the Methuselah Foundation, Singularity Institute for Artificial Intelligence, and Lifeboat Foundation, further showcasing his commitment to scientific advancement.
Discussion Comments
By anon2916 — On Jul 31, 2007

Can you please give me some idea of how much water is required to make say a meter cube of snow.

Michael Anissimov
Michael Anissimov
Michael Anissimov is a dedicated All The Science contributor and brings his expertise in paleontology, physics, biology...
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