Field Notes

<--2021-02-10 09:30:00 | 2021-03-17 11:00:00-->
Other sites visited today: Vaira | Hill Slough
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Tonzi: 2021-03-02 11:30:00 (DOY 61)
Author: Joe Verfaillie
Others:

Summary: Nice day, swapped 7500s, fixed minor issues with zcams, remove calibration kit from Tower top

Tonzi
2021-03-02

I arrived at about 11:30. It was mild with patchy high thin clouds and a cool breeze â€“ warm in the sun cool in the shade. The road is mostly dry except the usual puddles near the tower. The pond may have even gone down a tiny bit. The grass is somewhat yellow probably due to cold weather as the soil is mostly damp â€“ saturated at the bottom almost dry at the very surface.

I swapped the 7500s for calibration. At the Tower sn 75H-2180 came down and sn 75H-2150 went up. At the Floor sn 0035 came down and sn 75H-2176 went up. Pressure coefficients were update and the 7550 boxes reset.

2180 read: 420.1ppm CO2, 244.0mmol/m3 H2O, 16.4C, 98.8kPa
2150 read: 420.4ppm CO2, 219.3mmol/m3 H2O, 15.9C, 98.8kPa

0035 read: 428.2ppm CO2, 269.8mmol/m3 H2O, 18.3C, 98.8kPa
2176 read: 434.8ppm CO2, 257.7mmol/m3 H2O, 19.9C, 98.8kPa

I removed the calibration kit from the top of the tower. The following equipment came off

HMP155 sn S3410851
METER ATMOS14
PAR sn 060831 (Ameriflux)
CR1000 sn 4190
Sonic sn 153805

I collected data from the other data loggers (IRT CR1000 still needed reset to send data) and the FD chambers. I did the Moisture Point, DBH and manual well measurements.

I serviced the z-cams. Cam 3 had lost its time just before my last visit. This time I replaced its clock battery with a new CR1225 lithium coin cell. Last time I put the lid on z-cam1 backwards so the window did not line up with the lens. All the photos from z-cam 1 this time are trash. However the trees have been leafless for the entire period so little real data was lost.

I left at 14:30

Field Data

No tank data

Well Depth

Date	Location	Depth (feet)
2021-03-02	VR_well	57.1
2021-03-02	TZ_floor	31
2021-03-02	TZ_road	38.65
2021-03-02	TZ_tower	36.9

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_C_1 [8] => Tower_2 [9] => Floor_South_2 [10] => Soil_Transect_4_2 [11] => Soil_Transect_3_2 [12] => Soil_Transect_2_2 [13] => Soil_Transect_1_2 [14] => SoilCO2_West_A_2 [15] => SoilCO2_West_B_2 [16] => SoilCO2_West_C_2 [17] => Tower_3 [18] => Floor_South_3 [19] => Soil_Transect_4_3 [20] => Soil_Transect_3_3 [21] => Soil_Transect_2_3 [22] => Soil_Transect_1_3 [23] => SoilCO2_West_A_3 [24] => SoilCO2_West_B_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_1 )

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_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	SoilCO2_West_B_1	Spacial Count
2021-03-02	61	0	nan	33.8	23.5	16.2	17.1	18.8	15.9	27.6	23.2	31.9	25.8	26.5	29.5	30.7	18.2	24.3	17.3	29.5	31	38.8	26.8	31.3	33.5	33.2	34.3	22.3	37.7	42	52	33.1	43.1	46.8	34	43.4	58.6	48.8
2021-03-02	61	1	nan	34.1	23.5	16.8		18.5	15.6	26.1	23.2	31.3	25.5	24.6	29.8	30.4	18.8	24	17.6	30.4	31.5	39.6	27.9	31	34.3	32.9	32.7	23.5	36.6	42	52.6	31.9		47.7	34	43.7	60	48	24.4
2021-03-02	61	2	nan				22.3								29.2									31.3									40.8
2021-03-02	61	Avg	0-15cm																																					0
2021-03-02	61	Avg	15-30cm																																					0
2021-03-02	61	Avg	30-45cm																																					0
2021-03-02	61	Avg	45-60cm																																					0

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

0000

Date	DOY	Rep	Depth	Biomass_Cage_1	Flux_Tower_2	Biomass_Cage_2	Flux_Tower_3	Biomass_Cage_3	Flux_Tower_4	Biomass_Cage_4	Flux_Tower_1	Spacial Count
2021-03-02	61	0	nan	8	28.3	16.7	15.4	27.4	26.2	29.4
2021-03-02	61	1	nan	7.4	28.6	17.3	14.8	26.8	26.5	29.1	10.3
2021-03-02	61	Avg	0-15cm									0
2021-03-02	61	Avg	15-30cm									0
2021-03-02	61	Avg	30-45cm									0
2021-03-02	61	Avg	45-60cm									0

No TZ grass heigth found

No VR grass heigth found

Tree DBH

Date	Tag#	Reading (mm)
2021-03-02	1	11.5
2021-03-02	102	7.1
2021-03-02	2	11.3
2021-03-02	245	13.2
2021-03-02	3	17.3
2021-03-02	4	11.2
2021-03-02	5	4.3
2021-03-02	6	16.9
2021-03-02	7	19.5
2021-03-02	72	11.2
2021-03-02	79	10.5