Field Notes

<--2021-11-17 12:20:00 | 2022-01-06 11:50:00-->
Other sites visited today: Vaira | Hill Slough

Tonzi: 2021-12-02 10:15:00 (DOY 336)
Author: Joe Verfaillie
Others:

Summary: Swapped 7500s, open soil co2 profile not powering up, soil co2 cow fence dead.

Tonzi
2021-12-02

I arrived at 10:15 PST. It was clear, sunny and mild with little to no breeze. The Delta had heavy fog and here there was dew on the grass. The ground is still moist but the puddles on the road have dried up. The remaining leaves on the trees are mostly brown and I could hear them falling most of the day.

I swapped the 7500s for calibration. At the Tower sn 75H-2514 came off and sn 75H-2180 went on.
2514 read: 437.0ppm CO2, 406.0mmol/m3 H2O, 99.5kPa, 17.7C, 102.7SS
2180 read: 435.5ppm CO2, 405.3mmol/m3 H2O, 99.5kPa, 17.7C, 101.2SS
I set the pressure coefficients and reset the box.

At the Floor sn 75H-2669 came off and sn 0073 went on â€“ 0073 is fresh from factory refurbishment.
2669 read: 431.6ppm CO2, 438.0mmol/m3 H2O, 99.6kPa, 17.1C, 101.8SS
I didnâ€™t copy the new readings from 0073 but Iâ€™m sure they were good. I updated the pressure coefficients and reset the box.

I measured the Moisture Points, DBH and the wells. I collected the flux, met, FD data and the camera images.

The Open soil co2 profile seemed to have a power problem. When I forced the Vaisala probes to power up they were all reporting errors anyway. Iâ€™m planning to pull this system out so I left it as is. There are soil heat flux plates and a tipping bucket still on this data logger. I think Iâ€™ll migrate these to the OSU SP1 system.

I tried to turn on the fence charger at the soil co2 plot but the battery seems dead ~7V. The solar panel cable was broken at the panel â€“ I brought the cable in for repair. The fence at the main tower is powered.

I left at about 13:00

Field Data

No tank data

Well Depth

Date	Location	Depth (feet)
2021-12-02	VR_well	57.6
2021-12-02	TZ_floor	32.15
2021-12-02	TZ_road	39.75
2021-12-02	TZ_tower	36.15
2021-12-02	HS	6.38
2021-12-02	HS	6.38

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_B [7] => 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_B	SoilCO2_West_C	Avg	Spacial Count	Measurement Count
2021-12-02	336	0	0-15cm	28.8	11.8	19.4	21.2	14.7	24.7	26.1	19.4
2021-12-02	336	0	15-30cm	30.4	23.7	30.4	29.5	14.5	32.3	17.9	27.7
2021-12-02	336	0	30-45cm	31.3	23.5	29.9	32.1	29.9	39.9	33.2	34.9
2021-12-02	336	0	45-60cm	40.8	29.7	40	48	30.9	37.7	48	48
2021-12-02	336	1	0-15cm	29.1	11.8	15	20.9	14.7	25.6	26.4	19.7
2021-12-02	336	1	15-30cm	30.1	21.3	30.1	28.9	14.8	31	18.2	28
2021-12-02	336	1	30-45cm	30.4	22.6	29.9	31.5	29.6	39.6	33.8	34.9
2021-12-02	336	1	45-60cm	41.1	29.1	40	47.7	30.2	39.7	47.7	48.6
2021-12-02	336	Avg	0-15cm	28.95	11.8	17.2	21.05	14.7	25.15	26.25	19.55	20.58	8	16
2021-12-02	336	Avg	15-30cm	30.25	22.5	30.25	29.2	14.65	31.65	18.05	27.85	25.55	8	16
2021-12-02	336	Avg	30-45cm	30.85	23.05	29.9	31.8	29.75	39.75	33.5	34.9	31.69	8	16
2021-12-02	336	Avg	45-60cm	40.95	29.4	40	47.85	30.55	38.7	47.85	48.3	40.45	8	16

No VR Moisture Point data found

No TZ grass heigth found

No VR grass heigth found

Tree DBH

Date	Tag#	Reading (mm)
2021-12-02	1	16.4
2021-12-02	102	14.0
2021-12-02	2	14.2
2021-12-02	245	4.0
2021-12-02	3	19.3
2021-12-02	4	14.9
2021-12-02	5	8.2
2021-12-02	6	19.7
2021-12-02	7	8.3
2021-12-02	72	12.8
2021-12-02	79	12.5