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A Hole Where You'll Freeze to Death - The Geography of Extreme Microclimates

63 Views • 09/03/23
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Geography nerds can tell you that the most severe winter weather can be found on high mountain peaks, rather than low valley floors...but in some parts of our world, it's actually the opposite. Despite their lower elevation, these places are notorious for their extreme winter cold, thanks to a quirk of geology that shapes the landscape in a unique way. In this video we'll explore weird climates around the Alps, Rockies, Sierra Nevadas, and more. These are some of the Earth's most extreme microclimates. <br> <br>Sources: <br> <br>NOAA <br> <br>USDA <br> <br>Google Maps <br> <br>Temperature Inversion Breakup in the Gstettneralm Sinkhole, May 2003. International Conference on Alpine Meteorology. Bernhard Pospichal, Stefan Eisenbach, Reinhold Steinacker. <br> <br>Formation of Extreme Cold-Air Pools in Elevated Sinkholes: An Idealized Numerical Process Study, April 2005. Günther Zängl. <br> <br>The Climate Near the Ground (Seventh Edition). Rudolph Geiger, Robert H. Aaron, Paul Todhunter. <br> <br>A Sinkhole Experiment in the Eastern Alps. Reinhold Steinacker, Manfred Dorninger, Stefan Eisenbach, Alois M. Holzer, Bernhard Pospichal University of Vienna, Vienna, Austria, Charles D. Whiteman, PNNL, Richland, Washington, Erich Mursch-Radlgruber, Agricultural University, Vienna, Austria. <br> <br>Mountains &amp; Man: A Study of Process and Environment. Larry W. Price. <br> <br>Microclimate, Vegetation, &amp; Fauna. Ph. Stoutjesdijk, J.J. Barkman. <br> <br>Minimum Temperatures, Diurnal Temperature Ranges, and Temperature Inversions in Limestone Sinkholes of Different Sizes and Shapes. C.D. Whiteman, T. Haiden, B. Pospichal, S. Eisenbach, R. Steinacker. <br> <br>Geography of the World's Agriculture <br>By Vernor Clifford Finch, Oliver Edwin Baker <br> <br>http://calag.ucanr.edu/Archive..../?article=ca.v066n04 <br> <br>https://en.wikipedia.org/wiki/....San_Luis_Valley#Agri <br> <br>https://mysteryofutahhistory.b....logspot.com/2013/10/ <br> <br>http://www.glyfac.buffalo.edu/....courses/gly414/Lectu

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WabiSabi
WabiSabi
1 year ago

Yea, good stuff many people have no clue about this matter, glad you shared. Half a lifetime in winter climates has imparted some wisdoms. Like layering, thin under garments underneath, water resistant and breathable shells on top Gortex if you can afford it is tits.

If you are not prepared and are in any of the situations laid out in this video and become wet because you are wrapped up in non- breathable fibers either by sweat, or the elements melting through your gear you are as good as dead if you cannot get dry period!

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Life_N_Times_of_Shane_T_Hanson

You notice the effect on a motorbike - in undulating valleys and hills... depending upon where you are and all that... say a warm early spring or late autumn day and an icy cold clear night - almost no wind, and you go over the rises and small hills and the air is warm, and then go into the flood ways, the low lands and valleys and they are filled with icy cold air....

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Life_N_Times_of_Shane_T_Hanson

I have never been in a super super cold hole like this, but I have been in many places that have COLD characteristics... One was a valley, or a slope coming from a wide long hill crest, which was about 2 K wide and it funneled down into a creek - a narrow shallow valley, and as the cold air came down from the night sky, it all collected in the valley and ran down hill at a fairly strong pace, for a breeze in a cold, clear, windless night...

The cold sinking air, coming down, pushed the cold sinking air, on the ground in front of it, and the colder it got, the more it concentrated in the valley, and the stiffer the breeze got.....

Really cold actually.

Kind of like flood water coming down the hills, concetrating in the creeks and the valleys and the rivers...

Same thing.

Wind Breaks and shelter is terribly important - like polymer tarpaulins, are wind breaks, but they are SHIT insulators...

So you need them to keep the wind off you and to stop the wind going through your clothes and carrying your body heat away, and you need insulation to separate yourself from the wind break...

And with the ICY cold, valley floors etc... make the effort o get above them and out of them...

Minus 10*C or 0*C - this is a HUGE difference in survival / camping / comfort... and the need for WARM clothing and bedding starts to become very apparent - if your freezing to death and you haven't got it - your fucked...

And if you can get OUT of the wind, OUT of the really most extreme cold, and you can load up on the minimal bed space, like a cocoon, or a tunnel, of leaves and twigs and composting materials, and grasses etc.. and dry dirt over the top....

One of the things I discovered, is that when the wino's and homeless guys said "If your stuck out at night, sleep under some news papers.." - well I got stranded one night, way out in the middle of nowhere and that was all I had to make bedding from.

2 layers of large news papers were as warm as a really good bed.....

Seriously.

On motorcycles.. spreading a newspaper, under the front of your leather jacket, around your chest and belly, is a HUGE help in slowing the heat loss.....

AND

Spinning off the newspaper sheets, is putting your bed sheet ON TOP OF your blankets.. to keep the warmpth in...

It makes a huge difference - so ONE sheet, and one blanket - that's your bedding - IF your put the blanket over yourself and your sheet on top - your like 2 x as warm....

Best to get either a tight weave cotton sheet OR a softer thicker winter type sheet....

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