Field Notes

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Tonzi: 2020-12-01 12:00:00 (DOY 336)
Author: Joe Verfaillie
Others:

Summary: Swapped 7500s, check on COSMOS, Global water date ok, Tower Top SDI-12 locked up - restarted, broke field laptop screen, standard field work.

Tonzi
2020-12-01

I arrived at 12:00 noon. It was clear, sunny and mild with a light breeze from the southwest. There was some rain about two weeks ago but not very much and the ground surface is still dry but no longer crispy. Almost no grass sprouting here. Soil moisture is variable both in space and depth. A few trees have some leaves but mostly brown and lots of leaves on the ground.

I swapped 7500s but lost the screen shots with the before and after measurements. CO2 was about 430ppm and H2O was about 290mmol/m3 both before and after. I updated pressure coefficients and restarted the 7550 boxes. At the Tower sn 0041 came off and sn 75H-2180 went on. At the Floor sn 0042 came off and sn 0035 went on.

The data loggers all seemed fine. The IRT CR1000 had lost radio contact again. I reworked the wire holding the antenna at the data logger so that it should remain vertical. Restarting the CR1000 restored the radio link and updated the data on the Tower computer. The Tower Top CR1000 is missing data from a few half hours mainly in the afternoon. Might be caused by a loose connection from the recent power distribution upgrades. The SDI-12 connections were also locked up. I restarted the CR1000 and the SDI-12 coms were restored. I cleaned the radiometers but they werenâ€™t very dirty.

While doing the manual well measurements I dropped a well cap on the field computer bag with the laptop in it. It didnâ€™t seem much of a blow but half of the screen is damaged and unusable. This computer is 10 years old and still running XP â€“ amazing that it has lasted as long as it has. I was able to finish the other data collections with half a screen.

I collected and cleared the FD chambers and did the DBH measurements. I did the Moisture Point measurements too. I serviced the z-cams.

I checked on the COSMOS probe â€“ it seemed to have power. I copied the files from its SD card (not much change from last time as far as I could see) and restarted its data logger.

The Global Water logger in the Road well is still high and dry but it is running and has the correct date time. Its power pack was 3/4 green.

I left at 14:40

Field Data

No tank data

Well Depth

Date	Location	Depth (feet)
2020-12-01	VR_well	60.5
2020-12-01	TZ_road	39
2020-12-01	TZ_tower	36
2020-12-01	TZ_floor	31.45

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
2020-12-01	336	0	nan	8.3	6.2	14.4	2.7	9.7	9.4	1.8	16.8	12.7	6.5	10.6	5.7	3.9	7.2	13.9	10.9	3.5	6.9	1.4	10.9	13.1	12	39.6	9	9.2	14.8	12.6	13.7	7.6	10.3	15.3	2.2	41.4	10.2	12.8	21.6	11.6	12.5	11.1	12.2
2020-12-01	336	1	nan	7.7	5.3	13.8	2.7	9.1	8.8	1.8	15.9	13.2	5.9	10.6	5.6	5.4	8.1	13.9	10.9	3.5	8.4	1.7	10.9	13.4	11.5	11.1	7.6	9.2	15.1	12.6	14.3	7.8	9.8	15.6	1.9	41.4	9.9	12.2	20.8	11	11	11.1	12.5
2020-12-01	336	Avg	0-15cm																																									0
2020-12-01	336	Avg	15-30cm																																									0
2020-12-01	336	Avg	30-45cm																																									0
2020-12-01	336	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
2020-12-01	336	0	nan	6.2	4.5	10.6	8.1	3.7	14	13.3	14.5
2020-12-01	336	1	nan	4.7	4.5	11.5	8.7	3.9	13.7	13.6	14.8
2020-12-01	336	Avg	0-15cm									0
2020-12-01	336	Avg	15-30cm									0
2020-12-01	336	Avg	30-45cm									0
2020-12-01	336	Avg	45-60cm									0

No TZ grass heigth found

No VR grass heigth found

Tree DBH

Date	Tag#	Reading (mm)
2020-12-01	1	9.3
2020-12-01	102	5.9
2020-12-01	2	7.7
2020-12-01	245	12.6
2020-12-01	3	15.4
2020-12-01	4	8.8
2020-12-01	5	4.2
2020-12-01	6	16.0
2020-12-01	7	19.0
2020-12-01	72	9.6
2020-12-01	79	8.9