Field Notes

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Vaira: 2021-03-17 09:20:00 (DOY 76)
Author: Joe Verfaillie
Others:

Summary: Rain is coming, no cows to be found, swapped FD chamber, trees starting to put on leaves

Vaira
2021-03-17

I arrived at about 9:20 PDT. It was mild with a patchy overcast and little to no wind â€“ rain coming tomorrow. Lots of noise from the gun range early on. The road is mostly dry with just small puddles in the usual places. The road to the pond was fine. The water hole was full but I donâ€™t think the pond has been full yet this year. There were lots of wheel marks on the road and no cows to be seen â€“ maybe they have moved the cows off already. A few trees have begun to leaf out. By next visit they should all have leaves.

The grass was still only about 5cm tall â€“ much taller in the fenced areas but choked by old litter there. There was heavy dew on the ground which was probably frost a short while ago. I took photos of the ground outside the fence and inside the fence and calculated GCC. Outside GCC was 0.38 and inside was 0.35 â€“ doesnâ€™t seem like a big difference but GCC only ranges from 0.30 to 0.40 so about 1/3 of the total range.

I collected the well, Moisture Point, met, flux, camera and FD data. All seemed fine.

I swapped out FD chambers sn FD20190028 came off and sn FD20180068 went on. 28 belongs to us and we might use it at HS. 68 belongs to Eosense and just came back from service maintenance.

I cleaned the radiation sensors and added new desiccant to the BF3 sn 26/8 â€“ there was a tiny bit of condensation in its dome.

I checked the Phenocam time and it was fine. I need to run some Ethernet lines to the eddy system so everything is connected together. I should also start logging the FD data to the soil co2 23x.

I left at about 11:00 PDT

Field Data

No tank data

Well Depth

Date	Location	Depth (feet)
2021-03-17	VR_well	56.75
2021-03-17	VR_pond	18.98
2021-03-17	TZ_floor	30.85
2021-03-17	TZ_road	37.55
2021-03-17	TZ_tower	34.7

mode = both
Moisture Point Probes TZ
Array ( [0] => Tower_1 [1] => Floor_South_1 [2] => Soil_Transect_4_1 [3] => Soil_Transect_3_1 [4] => Soil_Transect_2_1 [5] => Soil_Transect_1_1 [6] => SoilCO2_West_A_1 [7] => SoilCO2_West_B_1 [8] => SoilCO2_West_C_1 [9] => Tower_2 [10] => Floor_South_2 [11] => Soil_Transect_4_2 [12] => Soil_Transect_3_2 [13] => Soil_Transect_2_2 [14] => Soil_Transect_1_2 [15] => SoilCO2_West_A_2 [16] => SoilCO2_West_B_2 [17] => SoilCO2_West_C_2 [18] => Tower_3 [19] => Floor_South_3 [20] => Soil_Transect_4_3 [21] => Soil_Transect_3_3 [22] => Soil_Transect_2_3 [23] => Soil_Transect_1_3 [24] => SoilCO2_West_A_3 [25] => SoilCO2_West_B_3 [26] => SoilCO2_West_C_3 [27] => Tower_4 [28] => Floor_South_4 [29] => Soil_Transect_4_4 [30] => Soil_Transect_3_4 [31] => Soil_Transect_2_4 [32] => Soil_Transect_1_4 [33] => SoilCO2_West_A_4 [34] => SoilCO2_West_B_4 [35] => SoilCO2_West_C_4 )

0000

Date	DOY	Rep	Depth	Tower_1	Floor_South_1	Soil_Transect_4_1	Soil_Transect_3_1	Soil_Transect_2_1	Soil_Transect_1_1	SoilCO2_West_A_1	SoilCO2_West_B_1	SoilCO2_West_C_1	Tower_2	Floor_South_2	Soil_Transect_4_2	Soil_Transect_3_2	Soil_Transect_2_2	Soil_Transect_1_2	SoilCO2_West_A_2	SoilCO2_West_B_2	SoilCO2_West_C_2	Tower_3	Floor_South_3	Soil_Transect_4_3	Soil_Transect_3_3	Soil_Transect_2_3	Soil_Transect_1_3	SoilCO2_West_A_3	SoilCO2_West_B_3	SoilCO2_West_C_3	Tower_4	Floor_South_4	Soil_Transect_4_4	Soil_Transect_3_4	Soil_Transect_2_4	Soil_Transect_1_4	SoilCO2_West_A_4	SoilCO2_West_B_4	SoilCO2_West_C_4	Spacial Count
2021-03-17	76	0	nan	33.8	20.3	12.7	24.7	22.9	19.1	30.2	25	24.1	33.2	30.7	27.7	31.6	30.7	19.4	26.1	18.8	31.6	34.6	38.5	26.8	31.8	34.9	32.1	34.1	24.8	37.1	42.5	50	32.2	43.4	46.3	32.2	44.5	59.2	48.8
2021-03-17	76	1	nan	33.8	19.1	13.8	25.6	22.9	19.4	29.9	24.7	25	32.6	30.4	27.1	31	30.7	19.4	24.9	18.8	31.6	34.6	38.5	26.8	32.4	34.1	32.1	34.3	24.8	38.8	42.5	49.1	31.4	43.1	48.4	32.2	44.8	59.4	48.6
2021-03-17	76	Avg	0-15cm																																					0
2021-03-17	76	Avg	15-30cm																																					0
2021-03-17	76	Avg	30-45cm																																					0
2021-03-17	76	Avg	45-60cm																																					0

mode = both
Moisture Point Probes VR
Array ( [0] => Flux_Tower_1 [1] => Biomass_Cage_1 [2] => Flux_Tower_2 [3] => Biomass_Cage_2 [4] => Flux_Tower_3 [5] => Biomass_Cage_3 [6] => Flux_Tower_4 [7] => Biomass_Cage_4 )

0000

Date	DOY	Rep	Depth	Flux_Tower_1	Biomass_Cage_1	Flux_Tower_2	Biomass_Cage_2	Flux_Tower_3	Biomass_Cage_3	Flux_Tower_4	Biomass_Cage_4	Spacial Count
2021-03-17	76	0	nan	13.2	9.4	29.5	18.5	15.6	27.6	26.2	27.1
2021-03-17	76	1	nan	12.7	9.4	29.8	17	15.6	27.4	25.4	27.4
2021-03-17	76	Avg	0-15cm									0
2021-03-17	76	Avg	15-30cm									0
2021-03-17	76	Avg	30-45cm									0
2021-03-17	76	Avg	45-60cm									0