Field Notes

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Vaira: 2020-03-12 10:00:00 (DOY 72)
Author: Joe Verfaillie
Others: Daphne

Summary: Trees have leaves, ground still pretty dry, Soil CO2 system power problems - temporarily fixed.

Vaira
2020-03-12

Daphne and I arrived at about 10:00. It was clear sunny and warm. The trees have leaves! About half the trees have begun to put on leaves. We got a little bit of rain last weekend and things still look dry here but the grass may be a bit less yellow.

Daphne measured the well, collected the data and did the Moisture Point measurements. The soil co2 system had not collected data since I installed the FD chamber last week. I think it was too much for the little power converter and the system would brown out when the relay for the soil co2 probes kicked on. We moved the FD chamber power line to the eddy box but had to leave an ugly splice temporarily protected in a plastic bag. But both systems seemed to be working again.

The 7500 read: 414.8ppm CO2, 492.7mmol/m3 H2O, 99.2kPa, 16.6C, 97.1SS

I collected three clip plots and took spectral measurements. I forgot to do veg height but it hasnâ€™t grown up much yet - still 5 to 10cm.

We left at about 11:00

Field Data

No tank data

Well Depth

Date	Location	Depth (feet)
2020-03-12	VR_well	57.43
2020-03-12	TZ_floor	30.11
2020-03-12	TZ_tower	34.78
2020-03-12	TZ_road	38.14

mode = both
Moisture Point Probes TZ
Array ( [0] => Tower_1 [1] => Floor_South_1 [2] => Floor_West_1 [3] => Soil_Transect_4_1 [4] => Soil_Transect_3_1 [5] => Soil_Transect_2_1 [6] => Soil_Transect_1_1 [7] => SoilCO2_West_A_1 [8] => SoilCO2_West_B_1 [9] => SoilCO2_West_C_1 [10] => Tower_2 [11] => Floor_South_2 [12] => Floor_West_2 [13] => Soil_Transect_4_2 [14] => Soil_Transect_3_2 [15] => Soil_Transect_2_2 [16] => Soil_Transect_1_2 [17] => SoilCO2_West_A_2 [18] => SoilCO2_West_B_2 [19] => SoilCO2_West_C_2 [20] => Tower_3 [21] => Floor_South_3 [22] => Floor_West_3 [23] => Soil_Transect_4_3 [24] => Soil_Transect_3_3 [25] => Soil_Transect_2_3 [26] => Soil_Transect_1_3 [27] => SoilCO2_West_A_3 [28] => SoilCO2_West_B_3 [29] => SoilCO2_West_C_3 [30] => Tower_4 [31] => Floor_South_4 [32] => Floor_West_4 [33] => Soil_Transect_4_4 [34] => Soil_Transect_3_4 [35] => Soil_Transect_2_4 [36] => Soil_Transect_1_4 [37] => SoilCO2_West_A_4 [38] => SoilCO2_West_B_4 [39] => SoilCO2_West_C_4 )

0000

Date	DOY	Rep	Depth	Tower_1	Floor_South_1	Floor_West_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	Floor_West_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	Floor_West_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	Floor_West_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
2020-03-12	72	0	nan	15	9.4	17.1	8.8	11.5	12.1	9.7	21.7	15.3	10	18.8	13	21.3	13.6	24.6	25.2	10.9	19.4	10.9	19.1	23.2	24.3	39.6	17.6	25.4	29.6	26.8	28.5	26.8	27.9	34	17.6	41.4	21.1	36.5	41.7	23.9	40.3	43.4	42.5
2020-03-12	72	1	nan	15.6	9.1	16.2	8.6	11.8	12.4	9.1	21.4	15.3	9.7	19.4	13.3	21	13.3	24.6	24.9	12.1	20	9.3	19.1	22.6	25.4	39.6	17.6	25.1	28.8	27.1	28.2	27.1	27.6	33.4	17.3	41.4	21.3	36.5	41.4	24.5	40	44.3	42.3
2020-03-12	72	2	nan			13.5										21.7										39.6										41.4
2020-03-12	72	Avg	0-15cm																																									0
2020-03-12	72	Avg	15-30cm																																									0
2020-03-12	72	Avg	30-45cm																																									0
2020-03-12	72	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] => Solar_Panels_4 [7] => Flux_Tower_4 [8] => 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	Solar_Panels_4	Flux_Tower_4	Biomass_Cage_4	Spacial Count
2020-03-12	72	0	nan	7.7	3.9	19.1	10.6	10.1	19.5	31.1	20.8	20.5
2020-03-12	72	1	nan	8	4.2	19.7	11.2	10.3	20.1	31.9	20.8	21.3
2020-03-12	72	2	nan		3.6		11.2		20.7			21.1
2020-03-12	72	Avg	0-15cm										0
2020-03-12	72	Avg	15-30cm										0
2020-03-12	72	Avg	30-45cm										0
2020-03-12	72	Avg	45-60cm										0