Field Notes

<--2015-05-06 11:15:00 | 2015-06-03 09:30:00-->
Other sites visited today: Vaira

Tonzi: 2015-05-20 11:00:00 (DOY 140)
Author: Joe Verfaillie
Others: Ana

Summary: Another Hander down, fixed power supply on soil co2 10x, tower flux okay, changed tower met program, did not measure wells or dendrometers, clock change on tower computer and IRT system

Tonzi
2015-05-20

I arrived about 11:00 with Ana. It was clear and sunny with a nice breeze from the west. The grass is still mostly green with lots of flowers and busy bees. The ground is dry but it looks there was some short heavy rain.

Ana checked on her IRT and wind profile systems. Another one of the sonics sn 0854 has stopped working. It was the one in the upside down position and might have gotten wet from the rain. The inside was dry, but the connector was wet. Sonic sn 0852 was moved from the second from bottom position to the bottom position. The clock on the IRT CR1000 was four hours ahead. Ana reset it from 8pm to 12:01pm PST.

Ana also downloaded the data from the Floor site and measured grass height. She tried to do the well measurements, but the measuring tape sensor was acting up and give variable numbers between 28 and 34ft.

I did the Moisture Point measurements. The measurements worked well here with most of the probes reporting reasonable numbers, unlike Vaira today. The top pin of the probe near the Tower was crushed. I had to break it off to get the cable to fit properly. I donâ€™t think that pin is used though.

I added a power supply to the soil CO2 10X near Liu Kangâ€™s tree. And plugged the MD9 into the CR23X that had been disconnected some time before. The Floor computer was able to collect the data.

I collected data from the Tower computer. Both winflux and the CR1000 were working this time. The Tower computer clock was 10min ahead. This affected the CO2 profile system, the Tram and winflux, but nothing else. When the computer clock read 12:25, I reset it to 12:15.

The CO2 profile system was only a few ppm off from calibration.

I collected all the Tower top 23x data and loaded a new program. I changed the range on the four-band radiometer from Auto to 50mv and the range on the LED sensors from 5000mv to 1000mv. Hopefully this will fix the spiking we see in the shortwave in numbers.

I cleaned the zcam windows but did not collect the images.

We did not do the dendrometers or water potential.

Veg Height (cm): Tape measure from ground to top of plant
20, 30, 20, 10, 10, 30, 10, 50, 30, 20, avg = 23, stdev = 12.52

Field Data

No tank data

No TZ Well data found

mode = both
Moisture Point Probes TZ
Array ( [0] => Floor_South [1] => Floor_West [2] => SoilCO2 [3] => Soil_Transect_4 [4] => Soil_Transect_3 [5] => Soil_Transect_2 [6] => Soil_Transect_1 [7] => SoilCO2_West_A [8] => SoilCO2_West_B [9] => SoilCO2_West_C [10] => Tower [11] => Floor_East )

Date	DOY	Rep	Depth	Floor_South	Floor_West	SoilCO2	Soil_Transect_4	Soil_Transect_3	Soil_Transect_2	Soil_Transect_1	SoilCO2_West_A	SoilCO2_West_B	SoilCO2_West_C	Tower	Floor_East	Avg	Spacial Count	Measurement Count
2015-05-20	140	0	0-15cm	9.1	17.3	11.1	10.3	9.1	10	7.7	18.2	13.2	10.6
2015-05-20	140	0	15-30cm	17.3		16.7	15.5	20.6	16.4	6.6	16.4	3.2	17.9	13.9	16.7
2015-05-20	140	0	30-45cm	13.1		14.8	11.5	17	19.5	16.8	17.9	17.3	16.2	17.3
2015-05-20	140	0	45-60cm	41.4	21.1	11.1	12.8	21.3	27.4	13	22.2	19.6	24.2	11
2015-05-20	140	1	0-15cm	8.8	17.6	11.1	10.3	9.7	9.7	8.3	17.6	13.5	10
2015-05-20	140	1	15-30cm	17.6	10.3	16.4	15.2	21	16.4	7.2	16.4	3.9	17.9	14.5	16.7
2015-05-20	140	1	30-45cm	14	18.2	13.1	11.7	16.5	19.5	16.5	18.4	17.9	15.9	15.9
2015-05-20	140	1	45-60cm	11.9	20.8	11.1	12.2	20.8	29.1	13.3	22.8	19.9	24.2	11
2015-05-20	140	Avg	0-15cm	8.95	17.45	11.1	10.3	9.4	9.85	8	17.9	13.35	10.3			11.66	10	20
2015-05-20	140	Avg	15-30cm	17.45	10.3	16.55	15.35	20.8	16.4	6.9	16.4	3.55	17.9	14.2	16.7	14.38	12	23
2015-05-20	140	Avg	30-45cm	13.55	18.2	13.95	11.6	16.75	19.5	16.65	18.15	17.6	16.05	16.6		16.24	11	21
2015-05-20	140	Avg	45-60cm	26.65	20.95	11.1	12.5	21.05	28.25	13.15	22.5	19.75	24.2	11		19.19	11	22

mode = both
Moisture Point Probes VR
Array ( [0] => Gate [1] => Flux_Tower [2] => Solar_Panels [3] => Biomass_Cage )

Date	DOY	Rep	Depth	Gate	Flux_Tower	Solar_Panels	Biomass_Cage	Avg	Spacial Count	Measurement Count
2015-05-20	140	0	0-15cm	12.9
2015-05-20	140	0	15-30cm	14.2	21.9
2015-05-20	140	0	30-45cm		17.3
2015-05-20	140	0	45-60cm		27.1	11.6	18.8
2015-05-20	140	1	0-15cm	12.7
2015-05-20	140	1	15-30cm	15.2	21
2015-05-20	140	1	30-45cm		16.8		18.2
2015-05-20	140	1	45-60cm		28.2	11.9
2015-05-20	140	Avg	0-15cm	12.8				12.8	1	2
2015-05-20	140	Avg	15-30cm	14.7	21.45			18.08	2	4
2015-05-20	140	Avg	30-45cm		17.05		18.2	17.63	2	3
2015-05-20	140	Avg	45-60cm		27.65	11.75	18.8	19.4	3	5