Field Notes

Tonzi: 2020-10-22 12:30:00 (DOY 296)
Author: Joe Verfaillie
Others: Siyan

Summary: Tested tipping buckets, swapped FD chamber, removed unused SRS NDVI sensor, Road well power pack dead, dead oak and pine

Tonzi
2020-10-22

I arrived at about 12:30. Siyan had arrived a little while before me. The pond is as low as I have ever seen it I think. There was a nice breeze from the west here even though there was a north wind at Bouldin Island this morning. The trees are still holding on to some green leaves.

I tested the tipping buckets.
OSUSP1 101/100 tips â€“ no adjustment
OSUSP2 100/100 tips
OSUSP3 100/100 tips
Tonzi 107/100 tips â€“ I adjusted the set screws one full turn CW but it should have been CCW â€“ fix and retest next time.

All the data logger data seemed to be up to date on the Tower computer. I collected the flux and phenocam data and cleaned the radiometers.

I also collected the Floor flux, well, soil co2 and IRT cal panel data.

The Tower read: 412.5ppm CO2, 310.8mmol/m3 H2O, 98.5kPa, 22.8C, 98.0SS
The Floor read: 417.5ppm CO2, 300.5mmol/m3 H2O, 98.6kPa, 25.8C, 102.4SS

I collected the FD chamber data and cleared their memories. The chamber under the tree has been reading zero CO2 concentrations for a couple of weeks. I removed chamber sn FD20180068 and installed chamber sn FD20180048.

I removed the SRS NDVI narrow FOV sensor sn 943203017 that has been on the Floor met station looking up at the trees and was no longer being recorded. The idea was to try to get NDVI of the trees without the background signal from the grass but it never really worked.

The lithium power pack at the Road Well was dead. The water level here has dropped below the range of the sensor so no additional data is lost. Iâ€™ll charge and replace the power pack next time.

Up near the OSU SP3 location a large pine has fallen over and an oak #12168 has broken off at about head height. The oak may have been dead for a while as it had mushrooms growing on its trunk.

I left at about 15:30

Field Data

No tank data

Well Depth

Date	Location	Depth (feet)
2020-10-22	VR_well	59.6
2020-10-22	TZ_floor	31
2020-10-22	TZ_tower	35.6
2020-10-22	TZ_road	38.6
2020-10-22	EE	1.08
2020-10-22	MB	1.41
2020-10-22	SW	-0.56

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
2020-10-22	296	0	0-15cm	2.4	2.8	3.9	0.3	0.1	2.1	0.1	5.3	6.8	5.7
2020-10-22	296	0	15-30cm	10.3	10.3	6	5.7	12.1	11.2	4.2	5.7	1.2	10.6
2020-10-22	296	0	30-45cm	13.7	12.6		9.5	11.5	25.1	13.4	15.1	9.4	10.9
2020-10-22	296	0	45-60cm	16.6	4.2	16.8	10.7	17.9	24.5	13	13.9	11.1	17.9
2020-10-22	296	1	0-15cm	3	2.1	3.9	0.1	0.1	1.8	0.1	5.6	4.2	0.1
2020-10-22	296	1	15-30cm	2.7	10.3	4.8	5.7	12.1	10.9	3.9	6.3	1.2	10.6
2020-10-22	296	1	30-45cm	12.9	12.9	10.9	9.5	10.6	15.9	13.4	15.1	8.4	10.3
2020-10-22	296	1	45-60cm	17.6	3.9	18.2	10.2	18.2	23.9	13	14.5	11.1	18.5
2020-10-22	296	Avg	0-15cm	2.7	2.45	3.9	0.2	0.1	1.95	0.1	5.45	5.5	2.9	2.53	10	20
2020-10-22	296	Avg	15-30cm	6.5	10.3	5.4	5.7	12.1	11.05	4.05	6	1.2	10.6	7.29	10	20
2020-10-22	296	Avg	30-45cm	13.3	12.75	10.9	9.5	11.05	20.5	13.4	15.1	8.9	10.6	12.6	10	19
2020-10-22	296	Avg	45-60cm	17.1	4.05	17.5	10.45	18.05	24.2	13	14.2	11.1	18.2	14.79	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
2020-10-22	296	0	0-15cm	0.7	0.1
2020-10-22	296	0	15-30cm	6.9	3.2
2020-10-22	296	0	30-45cm	3.7	13.4
2020-10-22	296	0	45-60cm	13.9	16.8
2020-10-22	296	1	0-15cm	1.3	0.4
2020-10-22	296	1	15-30cm	6.3	3.9
2020-10-22	296	1	30-45cm	4.9	12.6
2020-10-22	296	1	45-60cm	13	16.5
2020-10-22	296	Avg	0-15cm	1	0.25	0.63	2	4
2020-10-22	296	Avg	15-30cm	6.6	3.55	5.08	2	4
2020-10-22	296	Avg	30-45cm	4.3	13	8.65	2	4
2020-10-22	296	Avg	45-60cm	13.45	16.65	15.05	2	4

No TZ grass heigth found

No VR grass heigth found

Tree DBH

Date	Tag#	Reading (mm)
2020-10-22	1	6.0
2020-10-22	102	2.2
2020-10-22	2	5.2
2020-10-22	245	11.3
2020-10-22	3	15.0
2020-10-22	4	8.9
2020-10-22	6	15.9
2020-10-22	7	19.1
2020-10-22	72	8.9
2020-10-22	79	9.0