Field Notes

<--2020-12-01 09:15:00 | 2021-01-05 09:20:00-->
Other sites visited today: Tonzi | Bouldin Alfalfa

Vaira: 2020-12-18 12:15:00 (DOY 353)
Author: Joe Verfaillie
Others:

Summary: Grass is sprouting everywhere, reset phenocam clock, swapped FD chamber for troubleshooting in the lab, collected pond data

Vaira
2020-12-18

I arrived at about 12:15. It was a cool and sunny day with a variable breeze. There was rain a couple of days ago but the ground is still hard and there were only a few small puddles on the road. Grass is coming up pretty much everywhere giving the ground a green tint.

I did the well reading and the two Moisture Point readings â€“ looks like the biomass fence has had its annual repositioning.

Data at the tower seemed find. I reset the clock on the Phenocam from April to December â€“ there seemed to be a small offset in the time too. The soil co2 CR23X is sn 2299. I did not replace its relay because the current one seems to be working and the timing wasnâ€™t good to test the new one.

The 7500 read: 441.8ppm CO2, 418.8mmol/m3 H2O, 18.7C, 100.6kPa, 100.2SS

I swapped out the FD chamber sn FD20200001 came off and sn FD20190028 went on. The FD chamber that came off will be tested in the lab for high temperature readings and possibly sent to Eosense for repair. I set the chamber to UTC-8 and 5min sampling interval.

I took some spectra with the Jaz.

I drove to the pond to collect the water level data. The road is still in fine condition even for my little car. The cows have been kicking the conduit for the water level cable around a bit. I might need to better secure it while the water level remains low.

I left at about 14:00

Field Data

No tank data

Well Depth

Date	Location	Depth (feet)
2020-12-18	TZ_floor	31.6
2020-12-18	TZ_road	39.15
2020-12-18	TZ_tower	36.2
2020-12-18	VR_well	60.8
2020-12-18	VR_pond	13.88

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

Date	DOY	Rep	Depth	Tower	Floor_South	Soil_Transect_4	Soil_Transect_3	Soil_Transect_2	Soil_Transect_1	SoilCO2_West_A	SoilCO2_West_B	SoilCO2_West_C	Floor_West	Avg	Spacial Count	Measurement Count
2020-12-18	353	0	0-15cm	17.9	10	3.3	11.2	16.2	5.6	24.1	21.4	13
2020-12-18	353	0	15-30cm	11.8	7.8	11.8	20	17	5.4	16.7	7.8	15.8	10.9
2020-12-18	353	0	30-45cm	13.4	8.4	9.5	11.2	15.1	12.3	12.9	6.7	9.2	39.6
2020-12-18	353	0	45-60cm	15.3	11.1	10.2	15.6	20.8	11.9	13	23.6	12.8
2020-12-18	353	1	0-15cm	18.8	9.7	4.5	11.8	15.9	5.6	23.5	23.5	13.5	22
2020-12-18	353	1	15-30cm	10.9	8.7	10.9	20	16.7	5.7	15.8	9	15.5	11.8
2020-12-18	353	1	30-45cm	12.3	9.2	9.5	10.6	14.8	12.9	12.3	4.8	8.7	39.6
2020-12-18	353	1	45-60cm	15	5.6	10.2	15.9	21.6	12.2	12.5	23.4	12.5
2020-12-18	353	Avg	0-15cm	18.35	9.85	3.9	11.5	16.05	5.6	23.8	22.45	13.25	22	14.68	10	19
2020-12-18	353	Avg	15-30cm	11.35	8.25	11.35	20	16.85	5.55	16.25	8.4	15.65	11.35	12.5	10	20
2020-12-18	353	Avg	30-45cm	12.85	8.8	9.5	10.9	14.95	12.6	12.6	5.75	8.95	39.6	13.65	10	20
2020-12-18	353	Avg	45-60cm	15.15	8.35	10.2	15.75	21.2	12.05	12.75	23.5	12.65		14.62	9	18

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
2020-12-18	353	0	0-15cm	8.6	7.1
2020-12-18	353	0	15-30cm	18.8	14.2
2020-12-18	353	0	30-45cm	3.7	15.1
2020-12-18	353	0	45-60cm	13.9	14.8
2020-12-18	353	1	0-15cm	7.7	6.5
2020-12-18	353	1	15-30cm	19.4	14.2
2020-12-18	353	1	30-45cm	3.9	14.8
2020-12-18	353	1	45-60cm	14.5	14.5
2020-12-18	353	Avg	0-15cm	8.15	6.8	7.48	2	4
2020-12-18	353	Avg	15-30cm	19.1	14.2	16.65	2	4
2020-12-18	353	Avg	30-45cm	3.8	14.95	9.38	2	4
2020-12-18	353	Avg	45-60cm	14.2	14.65	14.43	2	4