| West Buttress Temperature Data | [ Sizes: Orig | Med | Small | Thumb ] |
On our climb of the West Buttress, I brought along a couple of temperature dataloggers that used to record skin surface temperature and exterior shade temperature. Here are the results... pretty slick, eh?...for geeking out.
Comments
[ Post a Comment ]| MOCKBA | I think it's darn cool | | 
Voted 10/10 | which probably makes me a lowly geek LOL. Can you read the values in real time, or just after getting back home? | | Posted Mar 2, 2009 2:38 pm |
 | | FortMental | Fortunately..... | | 
Hasn't voted | These things have to be read out on a laptop. Which is OK, otherwise they'd just be one more thing to fuss with! | | Posted Mar 2, 2009 4:51 pm |
| | MOCKBA | Re: Fortunately..... | |
Voted 10/10 | I dunno, for a gear-testing trip a realtime readout would be just right ... will have to settle for a conventional thermometer I guess :) I just discovered that a few sinkhole valleys in our fair state can get extreme cold temps on winter nights ... -69 was a record. It may be a great "field lab" location, but there are extreme vertical gradients of temperature so one would have to measure it on the spot ... a car thermometer a mile away won't cut it :) | | Posted Mar 2, 2009 5:38 pm |
| | FortMental | Holy Crap! . | |
Hasn't voted | -69? Wow! Unfortunately, you'll have a tough time finding any thermistors that operate down to that temp, for cheap. I know there are some max/min liquid-filled thermometers that get down to around -40. How'd they even measure that temperature? | | Posted Mar 3, 2009 3:58 pm |
| | MOCKBA | Re: Holy Crap! . | |
Voted 10/10 | I don't wanna be there if it's below -40 :) The measurements were done in the 80s by weather buffs from Utah State. They first tied a mercury thermometer to a fence down there and read min = -38, doh (mercury freezing point). That got them excited enough to get better thermometers and the official low has been recorded 3 winters later with a min thermometer (couldn't find which kind it was). The lowest realtime measurement there has been -64. | | Posted Mar 3, 2009 6:07 pm |
| hikerbrian | Good stuff | | 
Hasn't voted | Interesting that there's a clear inverse correlation between outside air temp and skin temp. I guess when it got warm outside you shed layers which cooled your skin? Good stuff. | | Posted Mar 2, 2009 7:06 pm |
| | FortMental | That's Right.... | |
Hasn't voted | The air really warms up when the sun is out. The altitude (and thinner air) means anything not colored white gets seriously baked. That includes all of that dark clothing you're wearing. At night, the valleys in the skin temperature data represent tossing and turning and letting cold air into my sleeping bag.
Every effort was made to keep the exterior sensor in the shade, thus measuring true air temperature. | | Posted Mar 3, 2009 4:04 pm |
| glahhg | cool | | 
Hasn't voted | This is really cool, man. What temperature sensors did you use? | | Posted Mar 3, 2009 3:08 pm |
| | FortMental | Pretty simple stuff | |
Hasn't voted | We used two Hobo Pendant Dataloggers made by Onset Computers. Between the sensors cable and software, it set us back about $200. Good thing I got other ideas for these things, cuz they ain't cheap. | | Posted Mar 3, 2009 4:19 pm |
| | glahhg | Re: Pretty simple stuff | |
Hasn't voted | Okay, scratch that idea then. I was hoping there'd be something really cheap I could do. Tracking outside temperature along with what i'm doing and wearing would be pretty useful. | | Posted Mar 19, 2009 3:15 pm |
| | FortMental | Re: Pretty simple stuff | |
Hasn't voted | Here's what you're looking for: http://www.microdaq.com/logtag/trix-8.php
good luck! | | Posted Mar 19, 2009 11:41 pm |
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