Field Notes

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Other sites visited today: Hill Slough | Tonzi
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Vaira: 2022-12-21 12:00:00 (DOY 355)
Author: Joe Verfaillie
Others: Kyoko, Hisashi

Summary: Cold and foggy, standard data collection, pond level has risen.

Vaira
2022-12-21

Kyoko, Hisashi and I arrived at 12:00 just in time for lunch. It was cold with light fog. The solar panels were still providing about 3A. The grass tips have yellowed – I think some freezing temperatures have finally impacted the growth. I don’t think there has been much if any rain in the last two weeks but the ground is still moist – no puddles on the road though. The water hole is still about half full. We went to the pond and its water level has come up to 14.54ft. The water was very clear – the weeds have almost disappeared.

At the tower we just did the standard data collection. I collected met, flux, FD and camera data. The camera had two periods of images since I couldn’t collect them last time.
The 7500 read: 465.2ppm CO2, 369.2mmol/m3, 6.1C, 100.6kPa, 102.2SS

I changed the desiccant in the water level tube. There are diurnal steps in the data - not sure this has anything to do with it though.

We left at 13:00

Field Data

No tank data

Well Depth