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A Thermal Dissipation Probe (TDP) sensor drilled into tree trunks at chest height to measure transpiration by taking the temperature difference across a heated element to determine the amount of sap flow. Outside of Cherskiy, Russia.

Credit to Read: 
Photo by Stan Skotnicki (PolarTREC 2016), Courtesy of ARCUS
Photographer: Stan Skotnicki
Download: 
Image icon Download Skotnicki_P6280065.jpg (1.6 MB)
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Focal Length: 
3.7mm
File Size: 
1679032
Computed Mime: 
image/jpeg
Max Aperture: 
f/3.5
Height: 
2592
Width: 
4608
Make: 
OLYMPUS IMAGING CORP.
Model: 
TG-860
Exposure Time: 
1/80s
ISO: 
125

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