Field Notes

<--2020-09-29 10:00:00 | 2020-10-22 12:30:00-->
Other sites visited today: East End | Vaira | Tonzi

Tonzi: 2020-09-29 12:00:00 (DOY 273)
Author: Joe Verfaillie
Others: Siyan

Summary: Standard fieldwork, change Floor met 23x program, Global Water at road well reading zero

Tonzi
2020-09-29

I arrived at about 12:00 noon. Siyan was here slightly before me as I finished up things at Vaira. It was hot and dry with little to no wind. The air quality was moderate even with new fires burning in Napa. I could just barely see Ranch Seco from the tower.

Everything seemed to be running okay even though itâ€™s been five weeks since I last downloaded data. The tree IRT CR1000 lost its radio link but only a few days ago. Resetting the radio got it going again. I cleaned the IRT systems solar panel which was very dirty.

The road well is reading zero as the water level has dropped below the sensor. I spray some WD-40 into a few dendrometers (5, 6, 2, 4, 102 and 245) but did not touch them to see if it helped.

I collected the all the data. The FD chamber memory was 15% full and I did not clear it.

The Tower read: 423.6ppm CO2, 438.7mmol/m3 H2O, 99.1kPa, 33.2C, 98.9SS
The Floor read: 431.4ppm CO2, 445.2mmol/m3 H2O, 99.2kPa, 36.4C, 101.0SS

I update the program on the Floor Met 23x to stop recording the SRS NDVI sensor but forgot to remove and bring in the sensor.

I serviced the zcams.

Siyan did soil moisture, midday water potential, denrometers and well measurements.

I left at about 14:00

Field Data

No tank data

Well Depth

Date	Location	Depth (feet)
2020-09-29	VR_well	59.2
2020-09-29	TZ_floor	30.6
2020-09-29	TZ_tower	35.2
2020-09-29	TZ_road	38.3

mode = both
Moisture Point Probes TZ
Array ( [0] => Tower [1] => Floor_South [2] => Floor_West [3] => Soil_Transect_4 [4] => Soil_Transect_3 [5] => Soil_Transect_2 [6] => Soil_Transect_1 [7] => SoilCO2_West_A [8] => SoilCO2_West_B [9] => SoilCO2_West_C )

Date	DOY	Rep	Depth	Tower	Floor_South	Floor_West	Soil_Transect_4	Soil_Transect_3	Soil_Transect_2	Soil_Transect_1	SoilCO2_West_A	SoilCO2_West_B	SoilCO2_West_C	Avg	Spacial Count	Measurement Count
2020-09-29	273	0	0-15cm	3.9	2.2	3.3	3.9	1.8	3	0.9	6.5	3	2.7
2020-09-29	273	0	15-30cm	10	8.8	6	6	12.7	11.2	3.9	6	0.8	11.5
2020-09-29	273	0	30-45cm	13.4	10.1	15.6	9.5	11.2	15	12.9	14.8	9.8	10.9
2020-09-29	273	0	45-60cm	17	4.1	17.3	10.7	17	26.5	12.5	15.9	21	15.9
2020-09-29	273	1	0-15cm	3.3	2.8	3.9	3.9	3	3	0.6	6.5	5.3	1.5
2020-09-29	273	1	15-30cm	10.6	7.8	5.7	6	12.7	11.2	3.5	6.3	0.2	11.2
2020-09-29	273	1	30-45cm	12.6	9.5	11.5	9.8	12	15.4	12.6	15.7	9.2	9.8
2020-09-29	273	1	45-60cm	18.5	2.2	15.6	10.5	14.8	25.6	13.3	15.6	23.4	16.2
2020-09-29	273	Avg	0-15cm	3.6	2.5	3.6	3.9	2.4	3	0.75	6.5	4.15	2.1	3.25	10	20
2020-09-29	273	Avg	15-30cm	10.3	8.3	5.85	6	12.7	11.2	3.7	6.15	0.5	11.35	7.61	10	20
2020-09-29	273	Avg	30-45cm	13	9.8	13.55	9.65	11.6	15.2	12.75	15.25	9.5	10.35	12.07	10	20
2020-09-29	273	Avg	45-60cm	17.75	3.15	16.45	10.6	15.9	26.05	12.9	15.75	22.2	16.05	15.68	10	20

mode = both
Moisture Point Probes VR
Array ( [0] => Flux_Tower [1] => Biomass_Cage )

Date	DOY	Rep	Depth	Flux_Tower	Biomass_Cage	Avg	Spacial Count	Measurement Count
2020-09-29	273	0	0-15cm	0.1	0.1
2020-09-29	273	0	15-30cm	6.6	2.9
2020-09-29	273	0	30-45cm	4.2	13.7
2020-09-29	273	0	45-60cm	14.2	16.8
2020-09-29	273	1	0-15cm	0.4	0.1
2020-09-29	273	1	15-30cm	6.9	3.2
2020-09-29	273	1	30-45cm	4.8	14
2020-09-29	273	1	45-60cm	13.6	16.8
2020-09-29	273	Avg	0-15cm	0.25	0.1	0.18	2	4
2020-09-29	273	Avg	15-30cm	6.75	3.05	4.9	2	4
2020-09-29	273	Avg	30-45cm	4.5	13.85	9.18	2	4
2020-09-29	273	Avg	45-60cm	13.9	16.8	15.35	2	4

No TZ grass heigth found

No VR grass heigth found

Tree DBH

Date	Tag#	Reading (mm)
2020-09-29	1	6.2
2020-09-29	2	5.2
2020-09-29	245	11.5
2020-09-29	3	15.2
2020-09-29	4	9.0
2020-09-29	6	16.9
2020-09-29	7	19.1
2020-09-29	72	8.9
2020-09-29	79	10.0

Water Potential - mode: raw

Time	Species	Tree	readings (bar)
2020-09-29 13:28:00	OAK	102	-36	-55	-35
2020-09-29 13:28:00	OAK	35	-49	-44	-32
2020-09-29 13:28:00	OAK	92	-29	-29	-35
2020-09-29 13:44:00	PINE	OLD	-4	-13	-20
2020-09-29 13:44:00	PINE	YNG	-15	-1	-6