Field Notes

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Vaira: 2017-05-11 09:00:00 (DOY 131)
Author: Joe Verfaillie
Others: Siyan, Daphne

Summary: Set up radio to pond, installed Ameriflux eddy equipment, standard fieldwork, grass is turning brown

Vaira
2017-05-11

I arrived about 9am with Siyan and Daphne. The grass is turning brown and the road and ground are dry. There is a different mix of grass species this year. The grasses seem shorter, denser and have more seeds. There was a truck and bobcat tractor working on the fence line on the south edge of the property. And a truck with cow trailer went past while we were at the site.

We went to the pond first. The water level there has dropped by about 1.5ft to 20.68ft in the last two weeks. We pounded in a small fence post just north of the data logger box and hose clamped a piece of 10ft metal conduit to it mounting the antenna of the Campbell radio RF400 sn ???? to the top. The radio is in the data logger box and powered over the CSIO port.

Back at the tower Siyan did the regular fieldwork and Daphne worked on the eddy systems. I put the other radio sn ???? in the 23x box on the radiation tower and its antenna at the top of a 10ft metal conduit attached to the same post the data logger box is attached to. The antenna is a little higher than the rest of the tower. I powered the radio from a 23x 12V port and used an existing cable that was set up for a CSIO port as the serial line back to the computer box. I cut the CSIO wired connector off and added a RS232 screw terminal connector. The data logger box could use some rewiring, especially a power strip. Amazingly it all seemed to work and I was able to connect to the pond. I set up the computer to collect the pond data and send it to Berkeley.

Daphne removed our temporary LI-7500A eddy system (sn 75H-2150, sn AIU-0650, sn 153805) and moved the old original eddy system to the temporary mount. Then she installed the new eddy system from Ameriflux sn 0035, sn AIU-1870 sn 170524 on the permanent mount. The old system and the temporary systems were running at 10Hz. The new system is running at 20Hz. All seemed to go well, but the new Gorilla USB drive did not work in the new Licor AIU. We reused the USB drive from the temporary 7500A system. Also, there may be some settings in the new AIU that need adjusting â€“ clock, analog inputs. Both sonics are oriented to true north plus minus a couple of degrees.

New 7500 read: 404.1ppm CO2, 540.6mmol/m3 H2O, 19.4C, 100.1kPa, 99.8SS

Veg Height (cm): Tape measure from ground to top of plant - Outside fenced area - grazed
42, 43, 53, 46, 56, 76, 118, 76, 88, 92, 40, 50, 52, 60, 72, avg = 64.3, stdev = 22.35

Field Data

No tank data

Well Depth

Date	Location	Depth (feet)
2017-05-11	TZ_floor	8.3
2017-05-11	TZ_road	17.8
2017-05-11	TZ_tower	13.1
2017-05-11	VR_pond	20.68

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
2017-05-11	131	0	nan	11.2	7.7	15	13.2	1.9	8.3	10.6	11.5	13	15	14.4	22.2	13	24	18.2	13.3	21.9	21	7.8	18.2	10	20.6	23.5	27.9	36.3	27.4	16.8	22.9	25.7	24.3	28.2	26	30.7	34.8	52.6	57.2	43.4	23.1	38	39.7	20.2	40	43.1	46.8
2017-05-11	131	1	nan	10.6	7.4	14.4	13.2	0.9	8.3		11.8	14.1	13.2	14.4	21.6	17	24	18.5	13	31.4		7.8	19.7	9	21.3	23.5	28.5	36	27.8	15.9	21.8		24	27.6	26	30.1	34.8	53.7	58.9	43.1	23.4	37.1		19.9	41.7	42.8	46.8
2017-05-11	131	Avg	0-15cm																																													0
2017-05-11	131	Avg	15-30cm																																													0
2017-05-11	131	Avg	30-45cm																																													0
2017-05-11	131	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
2017-05-11	131	0	nan	8	8.6	8.8	2.7	21.6	15.6	11.2	9.7	23.5	11.1	14.5	19.8	24.8	21.6	15	21.6
2017-05-11	131	1	nan	7.4	8.3	8.6	2.4	21.6	16.1	11.2	9.3	22.6	9	14	19.5	25.1	21.6	14.5	31.5
2017-05-11	131	Avg	0-15cm																	0
2017-05-11	131	Avg	15-30cm																	0
2017-05-11	131	Avg	30-45cm																	0
2017-05-11	131	Avg	45-60cm																	0