Field Notes

<--2013-03-27 10:00:00 | 2013-04-10 09:00:00-->
Other sites visited today: Tonzi | Vaira

Tonzi: 2013-03-27 10:30:00 (DOY 86)
Author: Siyan Ma
Others: Joe, Dennis, Martin

Summary: Tram moved, standard fieldwork, LI800 far off scale, collected soil diffusion samples.

When: Date: 3/27/2013 , Day: 086 , Watch Time: 10:30 am .
Where: Tonzi/Vaira Ranch
Who: Siyan, Joe, Dennis, Martin
Weather: sunny, clouds
Phenology: green grasses; oak trees leaf-out; not see cows at both sites; met Mr. Toniz

Summary

Tram was moved to the cluster area of root sampling.
Checked systems, downloaded data, and swap memory cards at Tower and Floor.
Joe downloaded data at Vaira, and I swapped memory card from CR1000.
Calibrated CO2 profile system; Zero and span seemed not stable. Zero offset was -148pm‌‌‌
Collected soil samples for soil gas diffusion experiments.
Collected grass and litter samples for grass LAI and litter dry weight.
Read dendrometers
Measured soil moisture
Measure groundwater well:

Date	DOY	Location	Depth without the black thing (feet)
3/27/2013	86	Floor	26.47
		Road	35.75
		Tower	30.7

Vaira_Grass Site

Fence and gate power: 12 v.
Panel and Batteries: - v; - amps; - amps.
Joe downloaded data at Vaira, and I swapped memory card from CR1000.

Check the fans of air temp and relative humidity sensors at Vaira. YES!
Check levels of Radiation sensors, clear up surfaces.YES!
Check rain gage, make sure not clogged. YES!
Closed gate and set up fence. YES!
Collected grass and litter samples for grass LAI and litter dry weight.

Tonzi_Tower Site

Fence and gate power: 12 v.
Panel and Batteries: - v; - amps; - amps.
Reading from Gillsonic screen before downloading data. (The value of H₂O and CO₂ should be in the range of 0 – 5 v.)

downloading data from PC.
Swapped the memory cards of CR1000.
The fan of air temp. and relative humidity sensors on the tower did not work because a wire was disconnected. Fixed.
Check rain gage, make sure not clogged. YES!
Check calibration cylinders;

CO₂ 400 psig; flow 20 psi; 421.63 ppm.
N₂ 600 psig; flow 20 psi.
Is the pump running‌ YES!

zero

span

close gate and set up fence. YES!

Toniz_Floor Site

Fence and gate power: 12 v.
Panel and Batteries: - v; - amps; - amps. (about 7:00 am local time)
Reading from Gillsonic screen before downloading data. (The value of H₂O and CO₂ should be in the range of 0 – 5 v.)

Figure 1. Screen shot right when I turned on the PC. Date (087) was wrong.

Figure 2. Screen shot after re-starting the PC. The problem of date was fixed (Day 086).

downloading data from PC. YES!
Swapped the memory cards of CR1000.

Check MD-9 system connections YES!

CR23X3 – floor-Met
CR23X6 – tower-Met
CR10X2 – floor-Met
Soil CO₂ profile: CR23X5 – soil CO₂ profile

Close gate and set up fence. YES!

Tonzi
Dendrometer

Date	Day	Tag #	Reading (mm)
3/27/2013	86	1	24.1
		2	18.2
		3	20.5
		4	3.5
		5	24.2
		7	18
		8	9.1
		72	14.5
		79	14.6
		102	16.2
		245	12.5

tonzi	7931AFE	402165	574B4B	402FF3	574632	7A432E	7A3C6E	7A3B40	7A4AAA
3/27/2013	86
	sm
0-15	25.3	2.3	39.9	16.5	12.3	12.1	18.4	14.3	11.8
15-30	30.3	18.8	50.0	27.0	27.7	16.7	24.9	25.8	13.0
30-45	40.6	32.8	46.2	35.4	51.0	17.9	24.2	29.1	28.8
45-60	35.7	49.7	56.7	43.8	40.0	23.9	35.0	46.5	23.4

	A6D882B	A3D04E8	A6D72F5

0-15	18.5	15.6	11.1
15-30	21.3	6.0	22.2
30-45	30.4	27.9	28.8
45-60	39.1	44.3	46.5

vaira	7933dee	00000128B97F3	00000128B8072	00000128BDDE8
0-15	6.1	9.1	4.4	1.65
15-30	14.7	11.05	7.4	7.95
30-45	18.1	7.55	11.5	16.2
45-60	29.3	17.3	10.1	18.9

Field Data

No tank data

Well Depth

Date	Location	Depth (feet)
2013-03-27	TZ_floor	26.47
2013-03-27	TZ_road	35.75
2013-03-27	TZ_tower	30.7

No TZ Moisture Point data found

No VR Moisture Point data found

No TZ grass heigth found

No VR grass heigth found

Tree DBH

Date	Tag#	Reading (mm)
2013-03-27	1	24.1
2013-03-27	102	16.2
2013-03-27	2	18.2
2013-03-27	245	12.5
2013-03-27	3	20.5
2013-03-27	4	3.5
2013-03-27	5	24.2
2013-03-27	7	18
2013-03-27	72	14.5
2013-03-27	79	14.6
2013-03-27	8	9.1