Why can skiers stay on the slopes so easily? A snow scientist explained

It is amazingly easy to get sunburn if you are skiing and snowboarding within the mountains, but have you ever ever wondered why?

Although it’s true that they’re closer to the sun after they are high within the mountains, this will not be the rationale.

If you go up 1.6 km, roughly the peak From Denver to the peaks of resorts equivalent to Vail or Copper Mountain, they’re lower than 1 millionth closer to the sun – that is nothing. Since the earth orbit is an ellipse and never a circle, the planet deals with 1.7% closer to the sun At the start of January in comparison with its annual average. That signifies that skiers can get around 3.3% more Sun in January as average a 12 months – not far more.

To be 1 mile higher signifies that the atmosphere is thinner, so Ultraviolet radiation caused Sunburns.

The big reason why her skin is somewhat burning has to do with all of the fresh powder, for the skier and snowboarder longing, especially on perfect, blue days. I’m a Snow scientist at Colorado State University and an enthusiastic skier. There are some ways to have snow conditions affect how much your skin burns.

Fresh snow may be very reflective

When you’re traveling within the snow, a big a part of the sun's rays that your skin get is reflected from the snow itself. The amount of reflected radiation is often called albedo.

Fresh powder snow can have one Albedo of virtually 95%This signifies that it reflects almost all the radiation of the sun that hits it. It is far more reflective than older snow that becomes less glossy. Fresh snow Has many surfaces to reflect the sun's rays. With increasing snow the snow crystal becomes rounder and there may be Less surfaces to reflect on light.

Snow crystals with square designs. The photo was shot in Fort Collins, Colorado in 2022.
Fresh snow has many planes to reflect on the sun's rays, greater than older snow.
Steven Fassnacht/Colorado State UniversityPresent Cc from
Older snow, after being melted a bit, is rounder and darker. This was shot in Fort Collins, Colorado in 2025.
Older snow will not be as reflective as he melts and the grains grow to be rounder.
Steven Fassnacht/Colorado State UniversityPresent Cc from

The albedo increases much fresh snow since the sun penetrates the powder and reflects the small, newly fallen crystals. Remember to begin a automobile after 6 inches of fresh snow has fallen. A lightweight still turns through the snow -capped windshield.

Just have one Powder on crust will not be as reflective as knee -deep fresh powder. Flatter snow is less reflective.

https://www.youtube.com/watch?v=ojc7nfjf3w0

What is Albedo?

Many people wish to drive what is understood Bluebird daysIf there may be a deep, fresh powder under a transparent blue sky, which after a big snow dump. However, this offers the proper conditions to burn from two directions: plenty of sun from above and high albedo that reflect it from below in your face. Clouds block sunlight, with Just a few third From the radiation of the sun, it manages through a very cloudy sky.

Which side of the mountain can be necessary

Where they’re on the mountain also makes a difference.

The inclination and the direction during which the inclination looks, Aspect calledAlso influences the intensity of the sun on a surface. Northern slopes In the northern hemisphere, less direct sunlight becomes in winter when the sun is situated further south within the sky, in order that they continue to be cooler.

A clear, brilliant blue sky over light white snow, interrupted by pine and mountains in the background.
Ironon Park near Ouray, Colorado, on a transparent blue day in February 2025.
Steven Fassnacht/Colorado State UniversityPresent Cc from

Many of the runs within the ski area of ​​the northern hemisphere stand north, in order that the snow melts more slowly. The The snow also varies From the highest of the mountain to the bottom. There is more snow up and the snow melts slower there, in order that the albedo is higher on the highest of the mountain than at the bottom.

How to cut back the chance of sunburn

In order to avoid sunburns, skiers and snowboarders must take all of those properties under consideration.

Since the solar radiation occurs again, people within the snow should put sunscreen on the underside of their noses, around their ears and their chin and in the standard places.

Most sunscreen must even be used again Every two hoursEspecially if you happen to probably sweat it, wipe it off or wear it while playing in your slopes. However, surveys show that Few people remember To do this. Carry Clothing with UV protection Covering as much skin as possible also can help.

These methods may help protect your skin from burning and the Cancer risks and premature aging That comes with it. Snow lovers must do not forget that they’re exposed to higher sunburn risks on the slopes than they’re used to.

image credit : theconversation.com