The first layer was long underwear up against our skin. Aside from our overhead shelters, which were protecting us from convection and moisture, our warmth came from layering our clothing.įor that environment, three or four layers of synthetic materials will usually do the trick. The temperatures hovered a little bit above freezing, with nightly bouts of rain, wind and snow. Be sure to dress and pace yourself appropriately to ensure you don’t perspire-which can cause significant heat loss.ĭuring a Randall’s Adventure & Training winter survival course that was held in one weekend, our main goal was staying alive and warm. It is said that clothing is the first line of defense against the elements in the city or the wilderness. Whenever the subject of shelter arises, people often talk about the latest, greatest tent or superlight, ultra-warm sleeping bag they just purchased, but they might overlook the most important part of keeping warm and dry: clothing. Whether constructing a primitive shelter or pitching a man-made shelter in cold environments, all five heat loss mechanisms should be considered to ensure winter survival especially before resting. Respiration heat loss also contributes to dehydration and is experienced when we exhale warm, moist body heat. Radiation is heat leaving the body it increases as temperatures drop.ĥ.
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