Random Pictures Thread

Short water fall videos from a visit to Rock Island State Park TN last Sunday.


Karl, you drove a long way! Twin Falls is so cool. On one of my favorite rivers in TN - Caney Fork. For any who do not know - there is not a surface stream that feeds the falls. The falls come out of the SIDE of a cliff not the top. Underground waters feed it. Well there is a river - The Collins River is about 1000' away, but no surface water. Basically a small area there are three rivers that converge but they are at different elevations above sea level! BTW River Musky are in the general area and lots of walleye are caught downriver from this.
 
No ET contact yet.
The equipment is used to measure sap flow (the white plug), the expansion and contraction of the stem (the metal plate drilled into the tree), and the equipment in the tower as a whole is used for the eddy covariance, which measures the fluxes between the atmosphere and the forest ecosystem at a landscape level.
What we are doing now is studying the biophysical and biochemical impacts of clear cut, and thining on these fluxes.

It is a complex way of saying how cutting the forest affect the CO2 in the atmosphere
 
Seems like a overly complex analysis system. I think it's known science of how much each specie of tree absorbs CO2 each year so if you know how many trees were cut, that will be the effect on CO2 levels. Here in the eastern hardwood forest there is rapid growth in trees due to the rich amount of CO2 they feed on. I would presume that the same thing is happening in Finland.
 
It is actually more complex than that. Because the species and tree interactions change drastically the atmospheric effects, plus all the other variables like temperature, water stress, plague attacks. Also, it is impossible to estimate the number of trees and species at a landscape level. Eddy covariance is used because it can capture that feedback at that level and it is sensitive enough to see the variations.
Part of my research focuses on comparing field measurements to the eddy fluxes and see how localized fluxes compare to the macro level
 
This is a picture from my phone taken sometime earlier this year. Pretty bad, but the subject is interesting. This is the sun at around 4PM with intermittent clouds and smoke.


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.............. Jerry (in Tucson)
 
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