Field Notes

<--2023-11-30 13:10:00 | 2024-01-02 11:15:00-->
Other sites visited today: Hill Slough | Vaira | Bouldin Corn

Tonzi: 2023-12-13 13:15:00 (DOY 347)
Author: Joe Verfaillie
Others:

Summary: Cows back on the land, dried out zcam 1 box and installed new A540 camera, add FD from VR to Tree 1 location.

Tonzi
2023-12-13

I arrived at 13:15 PST. It was a mild and sunny winter day with a few high wispy clouds coming in from the west. A little more water accumulated in the puddles on the road but the ground is still mostly dry. The trees still have many leaves. I think it’s been warm and there hasn’t been a strong storm to knock them off yet. I met Rob who was cutting fire wood. He said is grandson was having a modular house built and was installing solar panels and batteries for off grid. Rob also said pesky cows were back on the ranch.

The zcam 1 box was still wet inside. I think the foam that supported the camera had acted as a sponge. I removed the foam, squeezed and shook it out and put it in the sun on top of the car to dry. I wipe the water out of the box and let it all dry until the end of the day. Just before I left I swapped the desiccant in the metal tin with dry desiccant from the jar in the blue bag. Put the now dry foam back with a new (used) A540 camera. I tested it and it seemed to work. We will see next time if we get photos and it stays dry.

I collected the Tower and Floor flux data, and the phenocam images.
The Tower read: 432.6ppm CO2, 365.8mmol/m3 H2O, 16.6C, 99.2kPa, 100.5SS
The Floor read: 433.6ppm CO2, 331.4mmol/m3 H2O, 17.7C, 99.3kPa, 100.5SS

I did the moisture point, well and DBH readings. I collected the FD data from the open location. Then I installed the FD chamber sn FD20200001 from Varia in the Tree 1 location. It’s on the same bit of soil – no change in location.

Cows had broken the soil co2 fence and twisted the net radiometer to the east. I put the net radiometer back in its usual position, patched the fence back together and turn on the fence charger.

I was going to try to add a solar panel to one of the point dendrometers but forgot the connector I needed.

I left at about 16:00

Field Data

No tank data

Well Depth

Date	Location	Depth (feet)
2023-12-13	VR_well	60.6
2023-12-13	VR_pond	13.77
2023-12-13	TZ_floor	29.15
2023-12-13	TZ_road	37.65
2023-12-13	TZ_tower	33.9

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)
2023-12-13	1	19.1
2023-12-13	102	6.0
2023-12-13	2	15.8
2023-12-13	245	8.7
2023-12-13	3	5.8
2023-12-13	4	7.9
2023-12-13	5	17.8
2023-12-13	6	6.9
2023-12-13	7	14.0
2023-12-13	72	5.8
2023-12-13	79	5.3