Field Notes

<--2022-05-10 13:10:00 | 2022-06-07 12:00:00-->
Other sites visited today: Vaira | West Pond | East End

Tonzi: 2022-05-26 13:30:00 (DOY 146)
Author: Joe Verfaillie
Others: Carlos

Summary: Midday water potential, Showing Carlos the sites (sights?), hiccup in tower data loggers or computer, removed IRTs but forgot to bring them home, ran out of time from SoilVUE and matrix potential probes

Tonzi
2022-05-26

Carlos and I arrived at about 13:30 PDT. It was clear sunny and hot with some high thin clouds and a nice breeze. The last three days have been really hot. The grass is mostly yellow and most of the flowers from last time are gone. A few more late bloomers are flowering but not nearly in the numbers of the earlier flowers. There were a bunch of young cows and mamas near the water trough when we arrived.

I did midday water potential as soon as we arrived. Then we climbed the tower and collected the flux and camera images before I gave Carlos a tour of his tasks for the day. Carlos did the soil moisture and well measurements along with servicing the z-cams. I collect the rest of the flux, met and FD data. I read the dendrometers. I removed the IRTs from the cal panel and got them ready to bring home but then forgot to put them in the car. They are fine where they are as long as the cows don’t try to eat them. The cal panel with imbedded thermocouples will remain for now.

The Tower 7500: 403.6ppm CO2, 622.3mmol/m3 H2O, 26.6C, 98.5kPa, 99.8SS
The Floor 7500: 421.7ppm CO2, 512.1mmol/m3 H2O, 27.8C, 98.7kPa, 100.5SS

There was a power outage from about 1700 on 5/16 to the morning of 5/17. I’m not sure why as this doesn’t look like the normal solar power failing outage. The Tower computer was hung up with a failed to boot notice, but booted okay with a restart. The flux data doesn’t seem to be affected so maybe just the computer skipped some of the data logger records. I’ll manual check to see if the missing records are still on the data loggers next time.

I was hoping to install three more new SoilVUE10 sensors and the last matrix potential sensor, but the ones at Vaira took longer than I thought they would and we still needed to do two sites in the Delta on the way home.

We left at about 16:00 PDT.

Field Data

No tank data

Well Depth

Date	Location	Depth (feet)
2022-05-26	WP	2.67
2022-05-26	VR_pond	16.3
2022-05-26	VR_well	55.3
2022-05-26	TZ_floor	25.2
2022-05-26	TZ_road	34.25
2022-05-26	TZ_tower	29.1

mode = both
Moisture Point Probes TZ
Array ( [0] => Tower [1] => Soil_Transect_4 [2] => Soil_Transect_3 [3] => Soil_Transect_2 [4] => Soil_Transect_1 [5] => SoilCO2_West_A [6] => SoilCO2_West_C )

Date	DOY	Rep	Depth	Tower	Soil_Transect_4	Soil_Transect_3	Soil_Transect_2	Soil_Transect_1	SoilCO2_West_A	SoilCO2_West_C	Avg	Spacial Count	Measurement Count
2022-05-26	146	0	0-15cm	7.1	0.4	0.1	4.7	1.5	10.3	4.7
2022-05-26	146	0	15-30cm	12.4	6.3	14.2	12.7	4.8	9.3	12.4
2022-05-26	146	0	30-45cm	15.6	10.3	13.1	17.3	13.7	15.4	12.3
2022-05-26	146	0	45-60cm	21.9	12.8	19.6	28.8	14.5	18.2	16.5
2022-05-26	146	1	0-15cm	6.5	0.4	0.1	4.2	1.8	10	4.7
2022-05-26	146	1	15-30cm	12.4	6.9	14.5	13	4.8	8.7	12.4
2022-05-26	146	1	30-45cm	15.6	10.6	14	17.3	14	16.2	12.6
2022-05-26	146	1	45-60cm	20.8	12.5	18.2	29.4	14.2	18.2	16.5
2022-05-26	146	2	0-15cm		1.2
2022-05-26	146	2	15-30cm		7.8
2022-05-26	146	2	30-45cm		10.9
2022-05-26	146	2	45-60cm		12.5
2022-05-26	146	Avg	0-15cm	6.8	0.67	0.1	4.45	1.65	10.15	4.7	4.07	7	15
2022-05-26	146	Avg	15-30cm	12.4	7	14.35	12.85	4.8	9	12.4	10.4	7	15
2022-05-26	146	Avg	30-45cm	15.6	10.6	13.55	17.3	13.85	15.8	12.45	14.16	7	15
2022-05-26	146	Avg	45-60cm	21.35	12.6	18.9	29.1	14.35	18.2	16.5	18.71	7	15

No VR Moisture Point data found

No TZ grass heigth found

No VR grass heigth found

Tree DBH

Date	Tag#	Reading (mm)
2022-05-26	1	21.3
2022-05-26	102	17.3
2022-05-26	2	18.1
2022-05-26	245	5.0
2022-05-26	3	21.1
2022-05-26	4	18.2
2022-05-26	5	10.8
2022-05-26	6	21.4
2022-05-26	7	12.1
2022-05-26	72	15.3
2022-05-26	79	13.9