Field Notes

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Other sites visited today: Tonzi

Vaira: 2024-03-26 10:13:00 (DOY 86)
Author: Joe Verfaillie
Others:

Summary: Swapped 7500 for calibration, added repaired FD chamber to north location, removed old HMP45, standard fieldwork.

Vaira
2024-03-26

I arrived at about 10:13 PDT. It was a very pretty day if a little cool. The trees have started to put on leaves. It was mostly sunny with fluffy white clouds, a cool breeze from the southwest and a scattering of wild flowers. There was heavy dew on the grass. The cows left a lot of evidence of their presence including a bare patch where we usually park but I didn’t see any cows.

I measured the well.

I installed a recently repaired FD chamber sn FD20160001 in the north location. I brought a longer cable but it was a couple meters short from reaching the eddy box. I decided to wire it into the solar controller box. I had to drill a new hole in the box. I removed the power line to the old soil co2 box. When I plugged the FD chamber in, it had power but I was unable to connect by serial. I tested a few things and decide the long cable was bad. I put the old stuff back together and made a connection to the chamber. I set its clock and set its sampling rate to 5min. Hopefully I can find a working longer cable to fix it next time.

I collected the met, flux, camera and FD data. The Phenocam window needs cleaning next time. I swapped the 7500: sn 0035 came off and sn 0042 went on. I updated the pressure coefficients and reset the box.
0035 read: 429.2ppm CO2, 457.7mmol/m3 H2O, 16.1C, 99.9kPa, 99.4SS
0042 read: 425.5ppm CO2, 447.9mmol/m3 H2O, 15.6C, 100.0kPa, 100.5SS

I removed the old HMP45 sn W0730037 and solar shield and moved the new HygroVue to the original mounting location. I updated the met program removing the data from the revbow table. The old HMP was the first couple channels on the AM16/32 so I left some code to skip these channels.

I pulled a bunch of old stuff out of the eddy box: keyboard, screen, modem and cables. These are pretty dirty with mouse excrement and can probably go directly into e-waste. I put some rocks in the cable hole in the box to hopefully block access to the rodents.

I went to the pond and collected the pond data. All seemed well.

I left at about 12:25 PDT

Field Data

No tank data

Well Depth