Field Notes

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Vaira: 2025-07-08 09:30:00 (DOY 189)
Author: Joe Verfaillie
Others: Charlie

Summary: Reinstalled BF3 diffuse PAR, did end of season clip plots, went to the pond.

Vaira
2025-07-08

Charlie and I arrived at about 10:30 PDT. It was hot clear and sunny with a nice breeze that made it feel almost cool. The trees look good and the water hole still had some water but the grass and ground were crispy.

Charlie did the well measurement then five clop plots for yearend biomass.

I collected the met, flux and camera data and cleaned the eddy sensors and the radiometers.
The 7500 read: 426.9ppm CO2, 479.1mmol/m3 H2O, 31.5C, 99.9kPa, 103.9SS

I reinstalled the BF3 diffuse PAR sensor sn 26/8. I ran it in the lab a few days and it seemed okay. I cleaned up its cable a little and put new desiccant inside it, but found nothing particularly wrong. The wiring was a little tricky in that the only place I saw a designation for whether total or diffuse PAR was first was in the data logger code - I followed those labels and it seemed to be giving reasonable numbers.

We went to the pond. The stream was bone dry. The top of the third (I think) staff gauge was visible but too dirty to read and too far from the shore to clean. The CR10X data looked okay.

We left at about 11:50 PDT

Field Data

No tank data

Well Depth