Field Notes

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Other sites visited today: Tonzi | East End
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Vaira: 2021-04-18 13:30:00 (DOY 108)
Author: Joe Verfaillie
Others: Koyko, Hisashi

Summary: Dry, high CO2 low H2O, went to the pond, lots of popcorn flowers, no cows.

Vaira
2021-04-18

Koyko, Hisashi and I arrived at about 13:30 PDT. It was clear, sunny and hot with a breeze from the southwest. No rain for the last month. The grass is short, sparse and mostly going to seed. There are lots of pea flowers and huge patches of popcorn flowers.

Hisashi and Kyoko did the soil moisture, well depth and grass height measurements.

I collected the data. All seemed well â€“ high CO2 and low H2O.
The 7500 read: 415.6ppm, 216.2mmol/m3 H2O, 31.9C, 99.9kPa, 103.6SS

I cleaned the radiometers â€“ incoming LW was dirty, and did spectral measurements.

We went to the pond. The roads are dusty dry but there was some water in the stream. No cows were to be seen. The pond level is below the top of the second staff gauge.

We left at about 14:20

Veg Height (cm): Tape measure from ground to top of plant - Very patchy with open canopy of tall flowers and herbs
39, 14, 37, 46, 18, 9, 15, 24, 30, 42, 32, 36, 36, 23, 18, 16, avg = 27.2, stdev = 11.46

Field Data

No tank data

Well Depth

Date	Location	Depth (feet)
2021-04-18	VR_pond	17.82
2021-04-18	TZ_floor	30.4
2021-04-18	TZ_road	38.4
2021-04-18	TZ_tower	34.35
2021-04-18	VR_well	56.25

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_C_3 [26] => Tower_4 [27] => Floor_South_4 [28] => Soil_Transect_4_4 [29] => Soil_Transect_3_4 [30] => Soil_Transect_2_4 [31] => Soil_Transect_1_4 [32] => SoilCO2_West_A_4 [33] => SoilCO2_West_B_4 [34] => SoilCO2_West_C_4 [35] => SoilCO2_West_B_3 )

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_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	SoilCO2_West_B_3	Spacial Count
2021-04-18	108	0	nan	13.8	3.3	7.4	11.2	11.1	5.3	14.7	9.4	4.2	20.3	15.8	14.2	19.7	22.5	9	21	6.9	17.9	23.7	26.8	17	22.6	26.2	25.4	27.6	26	39.4	40.3	23.1	36.5	46.6	23.1	41.4	42.3	44.3
2021-04-18	108	1	nan	13.2	4.2	8.3	11.2	11.1	6.2	15	9.4	3.9	20.3	15.8	14.8	19.7	22.5	8.7	21.3	6.9	17.9	22.9	27.1	18.2	23.2	27.6	25.1	26.5	25.1	38.5	40.5	22.2	36.2	45.4	23.1	41.4	42.5	44.3	25.1
2021-04-18	108	2	nan								9.7									6.3																	42		24.8
2021-04-18	108	Avg	0-15cm																																					0
2021-04-18	108	Avg	15-30cm																																					0
2021-04-18	108	Avg	30-45cm																																					0
2021-04-18	108	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
2021-04-18	108	0	nan	3	1.5	13	7.8	7.8	16.2	17	18.5
2021-04-18	108	1	nan	2.7	1.8	13.3	8.1	7.6	16.5	17	19.1
2021-04-18	108	Avg	0-15cm									0
2021-04-18	108	Avg	15-30cm									0
2021-04-18	108	Avg	30-45cm									0
2021-04-18	108	Avg	45-60cm									0