Calling Richard Nisley... the clothing/temp chart
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(herzzreh)
Calling Richard Nisley... the clothing/temp chart on 10/18/2011 13:28:20 MDT Print View

I'm looking for a bigger version of the cart posted here: http://www.backpackinglight.com/cgi-bin/backpackinglight/forums/thread_display.html?forum_thread_id=9378

"The best clothing combinations for backpacking or hiking?"

The images were compressed and are somewhat hard to read.

Hobbes W
(Hobbesatronic) - F

Locale: SoCal
Homemade CLO chart on 10/18/2011 14:46:45 MDT Print View

When I studied RN's charts from a few year's back, I realized he had charted a basic linear progression that was anchored by some subjective assumptions. So, I figured I could map CLO values by temperature & activity, and use some kind of progression based on my own experiences/comfort zones:

Temp Sleep Sit Fish BP

10 9.10 5.56 4.15 3.00
15 8.45 5.18 3.85 2.75
20 7.80 4.80 3.55 2.50
25 7.15 4.42 3.25 2.25
30 6.50 4.04 2.95 2.00
35 5.85 3.66 2.65 1.75
40 5.20 3.28 2.35 1.50
45 4.55 2.90 2.05 1.25
50 3.90 2.52 1.75 1.00
55 3.25 2.14 1.45 0.75
60 2.60 1.76 1.15 0.50
65 1.95 1.38 0.85 0.25
70 1.30 1.00 0.55 -
75 0.65 0.62 0.25 -
80 0.00 0.24 - -

0.65 0.38 0.3 0.25

Note: Even though I used RN's starting points, I soon realized I could set -0- at where **I** was comfortable. I then messed around with the relative progressions based on my own personal experiences on when I would throw on/take off add'l clothing.

Example: At 30 degrees, I need a CLO of 6.5 for sleeping, 4.0 for sitting, 2.95 for fishing and 2.0 for hiking. The next chart below simply demonstrates my layering requirements for the relative temps based on activity levels.

Edited by Hobbesatronic on 10/18/2011 14:56:17 MDT.

Hobbes W
(Hobbesatronic) - F

Locale: SoCal
Homemade CLO chart on 10/18/2011 14:50:19 MDT Print View

After I was satisfied with my own personal chart, it was then trivial to add up the cumulative CLO values required for each respective activity:

Activity Layers Cum Temp
Sleeping
Nude 0.0 0.0 80
5 oz APEX 4.1 4.1 48
2.5 oz APEX 2.1 6.2 32
Polypro LJs 0.6 6.8 27
Wool Sweater 0.6 7.4 24
FP800 Vest 1.2 8.6 14

Sitting
Clothed* 0.2 0.2 80
Polypro LJs 0.6 0.8 72
Wool Sweater 0.6 1.4 65
PU Windshirt 0.4 1.8 60
FP800 Vest 1.2 3.0 43

Fishing
Clothed* 0.2 0.2 75
Polypro LJs 0.6 0.8 65
Wool Sweater 0.6 1.4 55
PU Windshirt 0.4 1.8 50
FP800 Vest 1.2 3.0 30

UL BP
Clothed* 0.2 0.2 65
Polypro LJs 0.6 0.8 55
Wool Sweater 0.6 1.4 41
PU Windshirt 0.4 1.8 35

* clothed: shorts,
t-shirt, socks, shoes