Field Notes

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Other sites visited today: Mayberry | Bouldin Corn | Vaira
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Tonzi: 2023-11-30 13:10:00 (DOY 334)
Author: Joe Verfaillie
Others: Daphne

Summary: Standard fieldwork, zcam 1 dead due to water leak, collected pt den data and swapped batteries.

Tonzi
2023-11-30

Daphne and I arrived at about 13:10 PST. Running a little late today with work done and to do in the Delta. It is mostly overcast with a breeze from the southeast. I don’t think there was recent rain but there is still a puddle in the road. The trees are mostly brown and yellow but still significant leaves. The grass is trying but it’s starting to get cold. It looks like a lot of thistles coming up near the tree trunks.

Daphne worked on the soil moisture, well, and DBH measurements. I collected the data from the Tower top and the Floor. All seemed well.
The Tower read: 427.7ppm CO2, 437.0mmol/m3 H2O, 14.3C, 98.9kPa, 100.8SS
The Floor read: 430.7ppm CO2, 397.2mmol/m3 H2O, 16.5C, 99.0kPa, 101.0SS

Daphne serviced the zcams. She discovered the Zcam 1 seemed to have a lot of condensation inside the box. The SD card and the camera lens were damp. The camera would not turn on so I removed it from its mount and discovered the screen was full of rusty water. I think it is dead. We brought it in. I added putty around the window and put some desiccant pack inside the try to dry things out. We need more of the orange-blue desiccant for the metal tins. And will need to reglue zcam 1 window – check others?

I collected the point dendrometer data and swapped the batteries. I think all the battery voltages were above 5V so they probably could have gone longer. I put the one set of batteries that died fast last time (marked with red x’s) on tree 3 that seems to be dying. I collected the data just before and after 14:00 PST. The first two trees had 14:00 stamps in their files already so I though their clocks were a little fast. But the rest had 15:00 stamps in their files so I think the point dendrometer clocks are all one hour ahead (on PDT). They were installed at the beginning of November last year so probably during DST. I also remove the solar panel plug from box 1 and taped up the hole. I think I can use the spare solar panels from Arable to power these boxes.

We left at about 15:00 PST

Field Data

No tank data

Well Depth

Date	Location	Depth (feet)
2023-11-30	VR_well	60.36
2023-11-30	TZ_floor	28.88
2023-11-30	TZ_tower	33.62
2023-11-30	TZ_road	37.5

No TZ Moisture Point data found

No VR Moisture Point data found

No TZ grass heigth found

No VR grass heigth found

Tree DBH

Date	Tag#	Reading (mm)
2023-11-30	1	19.0
2023-11-30	102	5.9
2023-11-30	2	15.7
2023-11-30	245	8.5
2023-11-30	3	5.6
2023-11-30	4	7.8
2023-11-30	5	17.7
2023-11-30	6	6.9
2023-11-30	7	13.9
2023-11-30	72	5.7
2023-11-30	79	5.2