Field Notes

<--2020-05-05 10:15:00 | 2020-06-12 11:00:00-->
Other sites visited today: Tonzi | Tonzi

Vaira: 2020-05-23 10:30:00 (DOY 144)
Author: Joe Verfaillie
Others: Siyan, Ray, Sunny

Summary: Standard fieldwork, swapped 7500, swapped BF3 desiccant

Vaira
2020-05-23

Siyan, Ray, Sunny and I arrive at about 10:30. Siyanâ€™s family was only a few minutes ahead of me. It was warm, clean and sunny with a nice breeze. The grass is largely yellow with lots of foxtails but still a few greenish patches. The trees look good and the water hole is still mostly full.

I swapped the 7500 â€“ sn 0073 came off and sn 75H-2669 went on.
0073: 412.2ppm CO2, 359.3mmol/m3 H2O, 99.4kPa, 25.1C, 99.7SS
2669: 431.4ppm CO2, 282.6mmol/m3 H2O, 99.4kPa, 25.4C, 101.2SS
I updated the pressure coefficients and reset the box.

I put new desiccant in the BF3 but it looked very dry inside already.

I collected the FD chamber data and cleared its memory. Might be getting too hot for it soon.

Siyan and Sunny did well depth, soil moisture and clip plots. The old Ocean Optics spectrometer software hung up and crashed â€“ maybe bad cable connection. I had the Jaz with me but forgot to take readings with it.

We left at about 12:00

Veg Height (cm): Tape measure from ground to top of plant - Senescing, very heterogenous heigth.
41, 30, 39, 24, 63, 33, 44, 41, 44, 39, 40, 45, avg = 40.3, stdev = 9.51

Field Data

No tank data

Well Depth

Date	Location	Depth (feet)
2020-05-23	VR_well	54.7
2020-05-23	TZ_floor	26.9
2020-05-23	TZ_tower	31
2020-05-23	TZ_road	35.8

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_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_C	Avg	Spacial Count	Measurement Count
2020-05-23	144	0	0-15cm	10.3	1.8	11.1	6.8	14.4	9.4	3	16.2	7.4
2020-05-23	144	0	15-30cm	12.7	13.6	12.1	10	15.5	15.2	5.4	9.7	15.5
2020-05-23	144	0	30-45cm	17.6	21.2	19	12.9	17.9	20.7	17.3	18.7	19
2020-05-23	144	0	45-60cm	24.8	16.2	24.5	15	28.5	34.5	17.6	23.6	25.9
2020-05-23	144	1	0-15cm	9.7	1.8	9.1	7.4	14.7	10.3	2.4	16.5	8.6
2020-05-23	144	1	15-30cm	12.1	13.3	12.1	10.3	15.8	15.5	5.4	10	14.5
2020-05-23	144	1	30-45cm	16.8	20.9	16.2	12.6	18.2	20.9	17.3	19.3	14.8
2020-05-23	144	1	45-60cm	23.6	16.2	28.2	14	28.2	34.5	17.3	22.5	16.2
2020-05-23	144	Avg	0-15cm	10	1.8	10.1	7.1	14.55	9.85	2.7	16.35	8	8.94	9	18
2020-05-23	144	Avg	15-30cm	12.4	13.45	12.1	10.15	15.65	15.35	5.4	9.85	15	12.15	9	18
2020-05-23	144	Avg	30-45cm	17.2	21.05	17.6	12.75	18.05	20.8	17.3	19	16.9	17.85	9	18
2020-05-23	144	Avg	45-60cm	24.2	16.2	26.35	14.5	28.35	34.5	17.45	23.05	21.05	22.85	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
2020-05-23	144	0	0-15cm	5	3.3
2020-05-23	144	0	15-30cm	11.5	11.1
2020-05-23	144	0	30-45cm	4.2	15.9
2020-05-23	144	0	45-60cm	15.9	13.6
2020-05-23	144	1	0-15cm	5.9	3
2020-05-23	144	1	15-30cm	11.2	13.6
2020-05-23	144	1	30-45cm	5	16.5
2020-05-23	144	1	45-60cm	15.6	13.6
2020-05-23	144	Avg	0-15cm	5.45	3.15	4.3	2	4
2020-05-23	144	Avg	15-30cm	11.35	12.35	11.85	2	4
2020-05-23	144	Avg	30-45cm	4.6	16.2	10.4	2	4
2020-05-23	144	Avg	45-60cm	15.75	13.6	14.68	2	4