rampagecoffee.com/
Eating snow (or ice)
▪ Always better to melt snow first (another video)
▪ Daily water requirement (all sources) up to 4L and increases during exertion
▪ Dehydration will lead to reduced mental cognition, reduced physical capacity resulting in poor decisions and potential for injury
▪ Better to eat snow if no liquid source of water is available
▪ Eating snow will not lower core body temperature significantly
▪ All but impossible to swallow large amount of snow
▪ Air to water ratio is between 5:1 and 10:1 (10L of snow for 1L of water)
▪ You will need to consume between 20L and 40L or more of snow each day
▪ Find the cleanest snow you can
▪ Avoid non-white snow or ice
▪ May have pathogens on it
▪ May have pollutants from the air
▪ Scrap top layer off
The Math
o 468 Calories to raise 40L (snow) to 37C from 0C
▪ 1calorie to raise 1gram water by 1degree Celsius
▪ 1 Calorie (kilocalorie) = 1000 calories
▪ therefore it takes 1C to raise 1kg by 1 degree
▪ 80c to melt 1gr snow to water at 0 degree Celsius
▪ it takes 37c to raise 1 gran ofwater from 0 to 37 celcius
▪ 80c + 37c = 117c per gram of ice/snow
▪ 1L water = 1Kg water
▪ 40L snow = 4L water = 4Kg water
▪ 117Calories to raise 1 Kg to 37C
Resources
• Eating Snow with Wilde...
• Don't Eat Snow Another...
boreal.net/articles/cold-weat...