Field Notes

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Vaira: 2025-01-09 15:00:00 (DOY 9)
Author: Joe Verfaillie
Others: Dennis, Kuno

Summary: Swapped IRGA for calibration, had to reload pond CR10X program, some data lost there.

Vaira
2025-01-09

Dennis, Kuno and I arrived at about 14::15. It was a clear, sunny and mild day with little to no wind. The road was wet with puddles and the water hole had some water. Cows were about. The grass is still just peeking through last year's litter.

Dennis tried to do spectral measurements but said the battery was dead. He did the well measurement with salinity
Vaira Well, 182 uS, 19.8 C

I collected the flux, met, FD and camera data. I swapped 7500s for calibration: sn 75H-2180 came off and sn 0035 went on.
2180 read: 438.1ppm CO2, 417.5umol/m3 H2O, 17.8C, 100.2kPa, 100.3SS
0035 read, 441.9ppm CO2, 403.5umol/m3 H2O, 18.3C, 100.2kPa, 101.2SS
The 7550 pressure coefficients were set, the clock was set and the box restarted.

We went to the pond where the CR10X had crashed as it often does at the end of the year. I think the power goes out and it can't recover from that. Its internal lithium battery seemed okay at 3.1445V. Maybe I should swap this one out. After some messing I finally got its program to reload and it seemed okay. I forgot to write down the staff gauge value.

We left at about 15:00

Field Data

No tank data

Well Depth