Field Notes

<--2017-12-14 09:30:00 | 2018-01-03 10:00:00-->
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Tonzi: 2017-12-14 11:00:00 (DOY 348)
Author: Joe Verfaillie
Others: Siyan

Summary: Calibration of soil co2 sensors with zero air, pulled broken Moisture Point, shutdown Tower CO2 profile and brought in LI-820 for cleaning and cal.

Tonzi
2017-12-14

I arrived with Siyan at about 11am. It was clear sunny and mild without a breath of wind. The ground is still damp in the low places but no puddles. The trees no longer have leaves at all.

I worked on recalibrating the soil co2 profiles, this time using zero air to go all the way to zero. The small tank of zero air I had nearly ran out and I refilled it partially from the N2 tank for the tower CO2 profile. After downloading the 23x data I uploaded a new program that starts recoding 10sec samples when flag 8 is set high. All three profiles seemed to calibrate okay.

I collected the data from both FD chambers then cleared their data. The pump on the FD chamber sn 20160002 in the Open (East) location seems to be running but both CO2 concentrations are the same. Maybe there is a solenoid or something that is not switching between cells properly. I removed the chamber since itâ€™s not working. Both chambers here also had some sprouting grass inside their collars but not as much as Vaira.

I pulled out the Moisture Point probe sn 000000574632 near the soil co2 profiles that has not been working for a while. Its bottom most pin is broken, but I donâ€™t think that pin is used.

I checked on the Tower co2 profile. The LI-820 sn CGA-556 was giving mostly bad readings. I shut off the gas, the pump and the solenoids and brought back the LI-820 for cleaning and calibration in the lab.

Siyan did all the data collection and regular fieldwork.

Field Data

No tank data

Well Depth

Date	Location	Depth (feet)
2017-12-14	TZ_floor	28.6
2017-12-14	TZ_road	37.4
2017-12-14	TZ_tower	33.6

mode = both
Moisture Point Probes TZ
Array ( [0] => Tower_1 [1] => Floor_South_1 [2] => Floor_East_1 [3] => Floor_West_1 [4] => Soil_Transect_4_1 [5] => Soil_Transect_3_1 [6] => Soil_Transect_2_1 [7] => Soil_Transect_1_1 [8] => SoilCO2_West_A_1 [9] => SoilCO2_West_B_1 [10] => SoilCO2_West_C_1 [11] => Tower_2 [12] => Floor_South_2 [13] => Floor_East_2 [14] => Floor_West_2 [15] => Soil_Transect_4_2 [16] => Soil_Transect_3_2 [17] => Soil_Transect_2_2 [18] => Soil_Transect_1_2 [19] => SoilCO2_West_A_2 [20] => SoilCO2_West_B_2 [21] => SoilCO2_West_C_2 [22] => Tower_3 [23] => Floor_South_3 [24] => Floor_East_3 [25] => Floor_West_3 [26] => Soil_Transect_4_3 [27] => Soil_Transect_3_3 [28] => Soil_Transect_2_3 [29] => Soil_Transect_1_3 [30] => SoilCO2_West_A_3 [31] => SoilCO2_West_B_3 [32] => SoilCO2_West_C_3 [33] => Tower_4 [34] => Floor_South_4 [35] => Floor_East_4 [36] => Floor_West_4 [37] => Soil_Transect_4_4 [38] => Soil_Transect_3_4 [39] => Soil_Transect_2_4 [40] => Soil_Transect_1_4 [41] => SoilCO2_West_A_4 [42] => SoilCO2_West_B_4 [43] => SoilCO2_West_C_4 )

0000

Date	DOY	Rep	Depth	Tower_1	Floor_South_1	Floor_East_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_East_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_East_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_East_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
2017-12-14	348	0	nan	19.4	188	30.5	25.8	17.9	22.3	18.5	10.3	25.6	26.1	12.7	28	30.4	31.9	20.6	22.2	30.1	30.1	12.1	24	17.6	28.6	27.4	37.4	38.5	31	22.3	29	30.7	25.4	35.2	32.1	36	35.7	35.1	42	41.4	26.2	41.1	38	16.5	39.1	45.7	45.4
2017-12-14	348	1	nan	18.5	18.5	31.4		17.6	23.5	18.5	10.3	26.7	26.1	12.4	27.7	31	31.6	21.6	21.9	30.1	29.2	11.8	24	17.6	26.3	26.2	37.4	38	32.1	21.8	29.6	30.1	25.1	32.7	31.8	36.6	35.7	36.8	40.3	41.7	25.9	40.8	38.5	16.8	39.1	46	45.1
2017-12-14	348	Avg	0-15cm																																													0
2017-12-14	348	Avg	15-30cm																																													0
2017-12-14	348	Avg	30-45cm																																													0
2017-12-14	348	Avg	45-60cm																																													0

mode = both
Moisture Point Probes VR
Array ( [0] => Solar_Panels_1 [1] => Flux_Tower_1 [2] => Gate_1 [3] => Biomass_Cage_1 [4] => Solar_Panels_2 [5] => Flux_Tower_2 [6] => Gate_2 [7] => Biomass_Cage_2 [8] => Solar_Panels_3 [9] => Flux_Tower_3 [10] => Gate_3 [11] => Biomass_Cage_3 [12] => Solar_Panels_4 [13] => Flux_Tower_4 [14] => Gate_4 [15] => Biomass_Cage_4 )

0000

Date	DOY	Rep	Depth	Solar_Panels_1	Flux_Tower_1	Gate_1	Biomass_Cage_1	Solar_Panels_2	Flux_Tower_2	Gate_2	Biomass_Cage_2	Solar_Panels_3	Flux_Tower_3	Gate_3	Biomass_Cage_3	Solar_Panels_4	Flux_Tower_4	Gate_4	Biomass_Cage_4	Spacial Count
2017-12-14	348	0	nan	16.5	15.3	20.3	12.1	25.8	27.4	19.1	19.7	29.3	15.4	21.8	29.9	41.4	27.4	20.5	29.9
2017-12-14	348	1	nan	12.1	15	20.3	13	25.5	28.6	19.4	19.1	29.3	15.1	22.6	29	40.5	27.1	20.8	30.2
2017-12-14	348	Avg	0-15cm																	0
2017-12-14	348	Avg	15-30cm																	0
2017-12-14	348	Avg	30-45cm																	0
2017-12-14	348	Avg	45-60cm																	0

No TZ grass heigth found

No VR grass heigth found

Tree DBH

Date	Tag#	Reading (mm)
2017-12-14	1	13.5
2017-12-14	102	9.1
2017-12-14	2	21.3
2017-12-14	245	8.0
2017-12-14	3	13.1
2017-12-14	4	7.5
2017-12-14	5	5.8
2017-12-14	7	19.8
2017-12-14	72	10.9
2017-12-14	79	10.1
2017-12-14	8	23.0