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I would suggest looking at the icebox post trip wrap-up on this site, and look at the winter forum and winter gear lists. I notice several things missing off the top of my head.
That list doesn't look warm enough for winter in the whites. Caviet: my experience is dated, since it was something like 20 years ago... but I don't think global warming has had that much effect yet. Hmm weather at Mt Washington tells that global warming hasn't moved the mercury up too much... it -15F in the middle of the day, -57F windchill. Yes, I realize you will be lower in less harsh conditions that the peak, but it's going to be COLD.
Specific Issues:
I would be concerned about a 0F bag unless the person had very high loft clothing to be combined with the bag. When I was there I was using a -20F bag and struggled to stay warm enough through the night.
You want more than R3 for your mat. R4 is about right down to around 20F for me... in the whites I would want more than that. I would recommend at least two closed cell foam pads. Ideally I would take a DAM to sleep on, and a foam pad to use for camplife. Remmeber that besides sleeping on your mat, you will want to be able to stand / sit on a mat when in your snow kitchen. Some people bring a small square of foam to stand on during breaks.
Make sure you bring plenty of fuel. You will not only want more hot food than a typical 3-season trip, but you will most likely want to make hot water bottles.
A pot to boil water in. Larger than normal because you will be melting snow.
Make sure at least one of your water bottles will make a good hot water bottle (e.g. boiling water doesn't met it).
Bring a pee bottle.
In the whites, make sure your Balaclava is windproof to protect your face from windburn. My memories of the whites were that it had brutal winds.
If your balaclava doesn't have an air warmer system over the mouth / nose.. bring one of those silly looking 3M air warming masks. This can make a significant different, especially when you sleep.
While active a wool/poly hat is likely to be enough, but there are times you will want something more. When facing strong winds you can layer your balaclava and your wool hat. When you stop you will want more insulation. If you jacket has an insulating hood, great. Otherwise, bring some sort of high insulation hat.
When active, I expect that base + moderate insulation + outer shell will be plenty (highly active might be too much), but once you stop... especially once the sun has gone down, I doubt that's warm enough. I would want some soft of high loft jacket that I could put over everything. I would make sure one of the jackets has a decent hood to cut down of drafts down the neck. BTW: Ounce for ounce, fleece is warmer than wool.
Make sure that at least one of your jackets has a good hood.
If I had them, I would def. bring vapor barrier socks. If you don't have some, bring sandwich bread plastic bags. Liners, bags, wool socks.
I would also bring a pair of extremely warm mittens.
I would want some nice, toasty, down or primaloft booties.
I would skip the alcohol. There are more effective methods to improve / keep circulation functioning properly in your limbs with a bit of prep.
I might bring extra batteries, but most likely I would just use a fresh set of lithium battery in a headlamp which won't be damaged by the higher voltage. Lithium perform WAY better than anything else in cold weather.
add sunscreen for exposed skin (e.g. your nose).
Add chap stick
I would lose the emergency blanket because you are carrying real insulation and a shelter.
More than gear though, it's really important to know how to manage in cold. I haven't written much about this, but I have links to several good books or web pages on my winter activities page.
Edited by verber on 02/07/2007 12:55:52 MST.
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