Snow Walkers Rendezvous 2017

Snow Walkers Rendezvous 2017  

Hulbert Outdoor Center ~ Fairlee, Vermont  

Friday, November 10 – 5:30pm – 9:30pm  Saturday, November 11 – 8:45am- 9:00pm

November 12 ~ Sunday Morning Workshops 8:30 to 11:30

 

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For program details:  www.wildernesstravel ers.org 


To register on-line: http://webreserv.com/ wildernesstravellers


Questions? Wendy Scott, dwscott23@gmail.com   Andy Williams, awilliamsvt@gmail.co m
 
Please drop us a note if you need a paper registration mailed to you. 


Andy Williams

P.O. Box 1031
Norwich, VT 05055
Cell  802-356-0798
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Chionophile

A Chionophile is any organism that can thrive in cold, snowy winter conditions.  But it can also be used to describe a person who loves cold wintry weather – (“a snow lover”).

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Can Wooly Bear Caterpillars Predict Winter Weather?

Wooly Bear on grass stem

The woolly bear caterpillar is the larval stage of the Isabella tiger moth, Pyrrharctia Isabella. The Isabella tiger moth overwinters in the larval stage. In the fall, caterpillars seek shelter under leaf litter or other protected places.  They eat mostly weeds, including dandelion, clover, and grasses. Woolly bears are relative speedsters in the caterpillar world, crawling at a neck-snapping .05 miles an hour, or about a mile a day.

The woolly bear caterpillar—with its distinct segments of black and reddish-brown—has the reputation of being able to forecast the coming winter weather.  According to legend, the wider that middle brown section is,  the milder the coming winter will be. Conversely, a narrow brown band is said to predict a colder, snowier winter. Among a group of woolly bears, the stripes can vary greatly, making their forecast difficult to confirm;  the same group of eggs can even hatch into caterpillars of varying dark and light bands.

Dr. C.H. Curran, former curator of insects at the American Museum of Natural History in New York City, tested the woolly worms’ accuracy in the 1950’s. Although his initial  surveys found an 80% accuracy rate for the woolly worms’ weather predictions, Dr. Curran gave up the study in 1955 after finding two groups of caterpillars living near each other that had vastly different predictions for the upcoming winter. Other researchers have not been able to replicate the success rate of Curran’s caterpillars.

Most scientists discount the folklore of woolly bear predictions.  Many variables may contribute to changes in the caterpillar’s coloration, including larval stage, food availability, temperature or moisture during development, and age.

Mike Peters, an entomologist at the University of Massachusetts, says there could be a link between winter severity and the brown band of a woolly bear caterpillar. “There’s evidence,” he says, “that the number of brown hairs has to do with the age of the caterpillar—in other words, how late it got going in the spring. The [band] does say something about a heavy winter or an early spring.  The only thing is . . . it’s telling you about the previous year.”

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Ötzi the Iceman and the Ten Essentials

On September 19, 1991, in the mountains between Austria and Italy, hikers stumbled upon the corpse of a 5,300 year-old man eroding out of a glacier. Dubbed “Ötzi” this perfectly preserved iceman is the oldest human ever found.  The Iceman stood about 5’5″ tall, and weighed about 134 lbs. He was in his mid-40s, and his strong leg muscles and overall fitness suggest that he may have spent his life herding sheep and goats in the mountains. His health was fair for the period–he had arthritis in his joints and he had whipworm – an internal parasite.

Ötzi carried tools, weapons, and containers including an animal skin quiver with arrow-shafts made of viburnum and hazel wood, sinews and spare points. A copper ax head with a yew haft and leather binding, a small flint knife and a pouch with a flint scraper and awl were all included in the artifacts found with him. He carried a yew bow. Otzi’s clothing included a belt, loincloth, and goat-skin leggings with suspenders, not unlike lederhosen. He wore a bear-skin cap, outer cape and coat made of woven grass.  His shoes were waterproof and wide, seemingly designed for walking across the snow; they were constructed using bearskin for the soles, deer hide for the top panels, and a netting made of tree bark.  Soft grass went around the foot and in the shoe and functioned like modern socks.

Otzi -dagger-and-sheath

We wanted to compare what he was carrying with our list of Ten Essentials.

Map
Compass
Flashlight Or Headlamp
Extra Food Ötzi carried some extra berries.
Extra Clothes Ötzi wore a cloak made of woven grass and a coat, a belt, a pair of leggings, a loincloth and shoes, all made of leather of different skins
Sunglasses & Sun Screen
First Aid Kit Ötzi carried two species of mushrooms with leather strings through them. One of these, the birch fungus, is known to have antibacterial properties and was likely used for medicinal purposes.
Pocket Knife Or Multi Purpose Tool Ötzi carried a little flint-tipped dagger with a handle made of ash. The dagger had twin cutting edges. Ötzi would have carried it attached to his waist. It was found inside a finely braided scabbard. The dagger would have been used as a multipurpose tool, but often to skin animals, clean hides and cut meat.
Fire Starter And Matches Ötzi had a type of tinder fungus included as part of a complex fire starting kit. The kit featured pieces of over a dozen different plants in addition to flint and pyrite for creating sparks.
Water And A Way To Purify It Two birch bark baskets that could have carried water

Not bad for a 5,300 year old primitive camper.

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Sleeping Warm While Winter Camping

Staying warm at night while you are winter camping is crucial to a successful trip.  This discussion covers the components of a winter camping sleeping system, preparation steps before sleeping, using external heat sources, dressing for sleep, personal variations, adjustments during the night and the morning after.

Components Of A Sleeping System

1. Sleeping pads

A good sleeping pad may be the most crucial element to staying warm at night.  What is under you is more important in keeping you warm than what’s on top of you. Unless you have the right amount of insulation below you the ground will absorb most of the radiant heat vented by your sleeping bag and you’ll feel cold at night. You can prevent this by using an insulated sleeping pad.  This compensates for the fact that you are lying on your sleeping bag, compressing the fill, eliminating most of its loft and heat retention capabilities. Typically I use some combination of a closed-cell pad and an inflatable Therm-a-Rest pad.  The closed cell pad has a R-value of about 2.6 and the Therm-a-Rest has an R-value of about 3 for a total of 5.6.

An alternative is to use a down filled sleeping pad such as Exped’s Downmat 9 which has an R-value of about seven. So a Downmat more than equals two regular pads-a self-inflating and a closed-cell pairing-in insulation. While I’ve never used a down-filled pad, I am told they are very comfortable.  Weight-wise a Downmat 9 weighs two pounds, while the two Therm-a-Rest pads will end up at three pounds six ounces.

2. Sleeping bag

If you want to be comfortable winter camping you need more than a summer or three season bag. Your sleeping bag choice requires a decision between down and synthetic insulation. Down insulation weighs less, lasts longer, compresses smaller, and costs more. Synthetic dries quicker, provides better insulation when wet, and costs less. You should consider whether you sleep warm or cold and take that into consideration when buying your bag. Buy a sleeping bag that’s rated 5 to 10 degrees colder than any temperature you expect to encounter.  The excess insulation may weigh more, but you will appreciate having the extra insurance. Different brands and different designs run warm or cold talk so talk to friends and research the internet.  Feather Friends and Western Mountaineering make well regarded down sleeping bags.

If you don’t have a really warm winter bag, consider an insulated over-bag that you can use with your three-season one to boost the temperature rating or bring two sleeping bags.

Make sure your sleeping bag is the right size for you. If there’s too much space your body will lose heat trying to warm that empty space. However, you might want extra length to your sleeping bag to sleep with boots, water bottles, cameras, clothes, etc. to keep them from freezing.

3. Sleeping bag liner

A sleeping bag liner serves as an insulating layer inside a sleeping bag, it provides a layer of protection between your body and any water bottles or clothes you include in your sleeping bag at night and they keep your sleeping bag clean from dirt and body oils. A sleeping bag liner might consist of a fleece blanket, silk mummy bag or a vapor barrier bag.  My experience is that blankets tend to get tangled so look for something shaped like your sleeping bag.

A vapor barrier is made of a waterproof, non-breathable coated material and the concept is to keep a sleeping bag dry on multi-day trips by preventing body perspiration from getting trapped in the insulation of the sleeping bag.  In ideal dry conditions the heat generated by the body drives the moisture through the insulation. However, in extreme cold this moisture might become trapped in the insulation and freeze. By using a vapor barrier the moisture is contained and can be removed by turning the vapor barrier inside out and shaking off the flakes as the moisture freezes.  Used properly, a vapor barrier liner can allow you to sleep comfortably in temperatures 10 or 15 degrees lower than you could without a liner; used improperly, a vapor barrier liner leaves you sleeping covered in your own sweat.

I have used a DesignSalt silk sleeping bag liner for 5 years.  I have used this liner in a variety of weather conditions with temperatures ranging from -teens to mid-70s. The silk liner is lightweight – it only weighs 4.7 ounces. The liner adds 9.5 degrees of warmth to my sleeping system.  It is  breathable, wicks moisture away from skin and is soft and comfortable to the skin. Finally it is the ideal size. I am 6′4″ and found the sizing of liner to be ideal. The 95″ long bag features a drawstring hood, a 35″ wide opening taping to a comfortable 22″ boxed foot end.

Preparation Before Sleep

1. Preparing your site

Select a protected campsite out of the wind and off the valley floor and other low areas where cold air settles.  Look for natural wind blocks like large boulders, rock outcroppings, or dense stands of trees protect against wind. Breezes blow up canyons or mountains during the day, and down at night. If you camp near a steam, cold air travels down water corridors.  Don’t set your tent or build a fire under trees that have snow on their branches.

Use a winter- tent. You want nylon tent walls with minimal mesh, closeable vents, and a full coverage fly. It’s amazing how much warmth a good winter tent can hold. If you are sleeping in a tent open the ventilation system to permit the moisture to vent out.  Most tents are going to have condensation somewhere – just try to reduce the volume to prevent your sleeping bag and clothing from getting wet.

If you are sleeping in a lean-to you should consider hanging a tarp across the opening to help eliminate breezes.  Similarly, if you are sleeping in the open a snow wall or tarp can serve as a wind block.

2. Preparing your sleeping system

As soon as you set up your site you should set up your sleeping system. If you are using a self-inflated air mattress let it self-inflate and then add puffs of air right before bedtime.  You don’t have to worry about moisture buildup even in winter; freezing of moisture in the pad isn’t an issue unless you are doing this daily for months at a time.

Fluff your sleeping bag up very well. This will allow more time for the sleeping bag to regain its loft. Also, you should give your sleeping bag a good fluff just before getting in it. This also helps the bag retain loft throughout the night.

Put tomorrow’s clothes under your sleeping bag.  If you put tomorrow’s clothes between your sleeping pad and your sleeping bag, your clothes will be warm when you go to put them on the next day.  The additional layer between you and the ground will also help you keep warm.

3. Preparing your body

During the winter it’s important to be adequately hydrated.  Your body demands more water in the winter as your lungs lose moisture humidifying and warming the dry, cold winter air. The average person needs about 1.5 to 2.5 liters per day, whereas a winter exertions may require 2.5 to 5 liters per day. In order to burn fuel efficiently you must keep your body hydrated.

Avoid caffeine, alcohol and nicotine. Caffeine is a diuretic which causes water loss increasing dehydration. Although alcohol has some caloric value, it is a detriment in cold weather. Physiologically, alcohol creates peripheral vessel dilation which results in the rapid loss of body heat. Nicotine is a strong vasoconstrictor that decreases circulation to your extremities and promotes frostbite.

Eat a hot, hearty meal for dinner. Your body will use this fuel to keep you warm throughout the night. If the weather is really bad and you don’t feel like cooking a big meal, then cook the meal that is easiest and fastest to make. When cold-weather camping, you carry a freeze dried meal since they are a quick, easy hot meal.

Eating a a high calorie, high fat content snack before bedtime will give your body more fuel to help keep you warm. Proteins, such as cheese, nuts, or grains, are better than simple sugars.  Proteins release their energy more slowly than sugars, keeping you warmer through the night.

Do calisthenics to get your circulation moving and your metabolism going.  Take a brief hike around camp, or do jumping jacks or pushups to increase your metabolism and get warm before getting into the sleeping bag.

Go to the bathroom before bed and save yourself a middle of the night trip in the cold.

External Heat Sources

Fill a leak-proof water bottle with hot water. Wrap it in a spare fleece layer or sock, place it in your sleeping bag and sleep with it. You pre-warm your sleeping bag with the hot water bottle before you slide into it to avoid those “cold-nylon shivers”.

Depending on your tent mate you can snuggle next to one another to share warmth. By keeping sleeping bags close together in the tent you can take advantage of your partner’s heat.

Take some heated rocks from around the campfire and place them inside your cooking pot for a safe heat source inside your tent.

Chemical heating packs work great for hands and feet. Layer them between socks or gloves – never put them directly next to your skin. Chemical heat packs usually last several hours.

Dressing For Sleep

Change into clean, dry, loose fitting clothes prior to climbing into your sleeping bag.  Perspiration in the clothes you wore during the day will chill you at night. Wear wool, silk or polypropylene long underwear tops and bottoms.  A hat, balaclava or hood will help keep your head warm.  Accessories such as socks, light gloves/mittens, and a scarf around your neck will also help retain body heat.

Make sure your feet are as dry as possible before going to bed. Wear dry sleeping socks or booties or you can “dry” wash your feet with a good foot powder that contains aluminum chlorohydrate, to dry the skin and reduce perspiration.

If you wear too much to bed you can risk compressing your sleeping bag insulation and getting overheated.  You want to avoid sweating during the night. If you feel constricted in your bag, you have got too much on.

Personal Variations

Some people have ‘must be warm’ spots on their bodies. For some people it is their head or feet. Mine is the small of my back. If my lower back is warm, I feel warm and can tolerate other parts being chilled.  Bring an insulating layer (down jacket or fleece) into your sleeping bag to place around your cold sensitive areas.  If your feet are cold, wrapping them in a fleece jacket may do the trick for you.

Adjustments During The Night

Don’t bring wet clothes or boots into your sleeping bag as moisture will travel from wet clothes to sleeping bag.  If you must bring leather boots into your sleeping to prevent them from freezing consider putting them in a stuff sack and placed into the foot of the sleeping bag.  You can also put the boots in a sack and place them between your sleeping bag and the pad underneath.

Sleep with your face outside of your sleeping bag. Your breath contains a great deal of moisture that can cause dampness to collect in the bag as you sleep.

Avoid overheating at night. Being too warm produces perspiration, so vent your bag if needed or take off your hat.

If you are cold add more insulation by using your jacket as an additional layer and seal the area around your neck by cinching your mummy bag or use extra clothing to seal off the opening around your neck. I have found putting a down jacket loosely over me to be more comfortable than wearing the jacket and it prevents sweaty arm pits.

Pee if you feel the urge.  Holding it in requires your body to waste energy trying to heat up the water in your bladder.  To avoid exposing yourself to the elements use a pee bottle.

Keep a snack available for the middle of the night, so if you do wake up cold you can replenish lost calories and warm back up again. Semi-sweet chocolate bars or trail mix work fine.

If you have tried all these measures and are still very cold, don’t be afraid to wake someone!

The Morning After

When you awake prolong your time in the sleeping bag as long as possible.  Try to prepare a hot drink, eat your breakfast, get dressed and pack up to the extent possible while staying warm in your sleeping bag.

Roll the moisture out of your bag each morning when you get up (roll from foot to head), then leave it open until it cools to air temperature. If weather permits set it out to dry.

Pack your inflatable sleeping pad by folding the mattress several times and sitting on it to get most of the air out, then start at the end and roll toward the valve, using your knee as pressure to keep it rolling tightly.  Or alternatively fold mattress in half lengthwise, then fold again. Now sit on mattress and open the valve. When all the air is out, close the valve and roll up your mattress.

Packing nylon tents and stuff sacks can really cause your hands to get cold.  Wear your gloves and mittens as much as possible to prevent frostbit.

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Down Booties

Once in camp it is a treat to put on dry socks and warm footwear.  Keeping your feet warm plays an important role in maintaining a comfortable temperature.

Down booties are super lightweight above the ankle booties made with a nylon outer shell fabric and a adjustable draw closure. They are usually made of 650 – 800 fill goose down or Primaloft insulation and are light (~6 ounces) and compressible so you can easily carry them in your pack.

Sizes are a loose range so they may be slightly loose or slightly snug on your foot.  Down booties are usually worn over socks and may be worn inside of over boots.

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