Field Notes

<--2012-09-19 05:15:00 | 2012-10-09 05:50:00-->
Other sites visited today: Tonzi | Vaira

Tonzi: 2012-09-19 05:30:00 (DOY 263)
Author: Siyan Ma
Others: Joe

Summary: Standard field work, reinstalled CO2 profile IRGA, fixed daily rename at Vaira.

When: Date: 9/19/2012 , Day: 263 , Watch Time: 5:30 am .
Where: Tonzi/Vaira Ranch
Who: Siyan, Joe
Weather: clear, sunny
Phenology: oak trees did not look that brown, but some had a lot of brown leaves, almost entire canopy.

Summary

Pre-dawn water potential measurements: oak = ~ -50 bar; pine=~-20 bar.
checked and downloaded data at Tower, Floor, and Vaira
Joe fixed CO2 profile system.
Calibrated Li-800 in the field.
Read dendrometers
Measured soil moisture
Measure groundwater well:

Date	DOY	Location	Depth without the black thing (feet)
9/19/2012	263	Floor	28.6
		Tower	34
		roadside	35

Vaira_Grass 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.)

(sorry, forgot downloading the images of screen shots.)

downloading data YES!
Joe fixed the timing problem in START TASK, renaming met files 12 minutes after the midnight, instead of 2 minutes after.
Check the fans of air temp. and relative humidity sensors at Vaira. YES!
Check MD-9 system connections YES!
Check CR23X with two multiplexers 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!

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 YES!
check the fans of air temp. and relative humidity sensors on the tower and the floor. YES!
Check rain gage, make sure not clogged. YES!
Check calibration cylinders;

CO₂ 900 psig; flow 20 psi; 421.63 ppm.
N₂ 1100 psig; flow 20 psi.
Is the pump running‌ Joe installed IRGA back.
Readings before calibration:

Before zero:

After Zero:

Before Span:

After 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.)

downloading data YES!
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	7931AFE	402165	574B4B	402FF3	574632	7A432E	7A3C6E	7A3B40	7A4AAA
9/19/2012	263
	sm
0-15	6.4	2.4	9.7	0.7	11.1	1.0	1.7	#DIV/0!	3.5
15-30	12.4	6.5	12.8	14.1	7.1	8.0	14.3	11.6	3.2
30-45	19.0	12.2	11.0	17.9	9.4	9.7	13.8	15.1	12.9
45-60	#DIV/0!	1.6	20.7	14.5	11.1	10.5	19.6	24.2	11.1

	A6D882B	A3D04E8	A6D72F5

0-15	7.3	1.8	1.1
15-30	5.7	0.3	11.7
30-45	15.0	14.2	14.4
45-60	15.4	18.8	12.5

vaira	57318a	7933dee	00000128B97F3	00000128B8072	00000128BDDE8
0-15	broken	0.4	1.95	0.4	0.85
15-30	broken	7.8	5.1	4.1	2.15
30-45	broken	13.4	3.1	9.7	11.7
45-60	broken	26.9	14.5	8.8	16.9

Tonzi
Dendrometer

Date	Day	Tag #	Reading (mm)
9/19/2012	263	1	21.6
		2	14.5
		3	18.1
		4	3.1
		5	24.0
		7	19.1
		8	6.9
		72	10.8
		79	10.3
		102	13.9
		245	10.1

Notes: “X” means not working any more.
Dendrometers installed by Gretchen group

Field Data

No tank data

Well Depth

Date	Location	Depth (feet)
2012-09-19	TZ_floor	28.6
2012-09-19	TZ_road	35
2012-09-19	TZ_tower	34

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)
2012-09-19	1	21.6
2012-09-19	102	13.9
2012-09-19	2	14.5
2012-09-19	245	10.1
2012-09-19	3	18.1
2012-09-19	4	3.1
2012-09-19	5	24
2012-09-19	7	19.1
2012-09-19	72	10.8
2012-09-19	79	10.3
2012-09-19	8	6.9

Water Potential - mode: raw

Time< h>	Species	Tree	readings (bar)
2012-09-19 05:20:00	OAK	UNKNOWN	-49	-51.5	-44	-53	-55	-55	-27.5	-28	-26.5
2012-09-19 05:20:00	PINE	UNKNOWN	-25	-15	-20	-25	-25	-13
2012-09-19 10:14:00	OAK	UNKNOWN	-55.5	-42	-48	-38	-40	-49	-37	-37
2012-09-19 10:14:00	PINE	UNKNOWN	-17	-12	-15	-22	-21