Field Notes

<--2013-05-30 10:00:00 | 2013-06-19 09:30:00-->
Other sites visited today: Vaira | Tonzi
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Tonzi: 2013-06-19 09:00:00 (DOY 170)
Author: Siyan Ma
Others: Joe, Martin, Taichi

Summary: Standard fieldwork, midday water potential, moved tram.

When: Date: 6/19/2013 , Day: 170 , Watch Time: 9:00 am .
Where: Tonzi/Vaira Ranch
Who: Siyan, Joe, Martin, Taichi
Weather: clear, sunny
Phenology: dead grasses; oak leaves; no cows

Summary

Checked and downloaded data from PC at Tower, Floor.
Joe checked and downloaded data at Vaira.
Swapped memory cards of CR1000s at three sites. Everything worked well.
Joe, Martin, and Taichi moved the tram to the new location behind Liukangâ€™s Tree.
Calibrated CO2 profile system.
Measured midday water potential of oak leaves and pine needles.
Read dendrometers
Measured soil moisture
Measure groundwater well:

Date	DOY	Location	Depth without the black thing (feet)
6/19/2013	170	Floor	28.9
		Tower	33.2
		Roadside	37.3

Vaira_Grass Site

Fence and gate power: 12 v.
Joe checked and downloaded data at Vaira and swapped the memory cards of 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!

Screen shot of Vaira flux data logger table

Screen shot of Vaira met data logger table

Screen shot of Vaira soil co2 data logger table

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 â€“ 5 v.)

Tower Gill sonic plots screen before downloading data

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

Screen shot of tower flux data logger table

Screen shot of tower flux data logger status window

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 1600 psig; flow 12 psi; 404.02 ppm.
N₂ 2000 psig; flow 10 psi.
Is the pump runningâ€Œ YES!
Screen shot of co2 profile data logger table

Zero
Before After
Screen shot of Li-800 calibration zero pre-cal

Screen shot of Li-800 calibration zero post-cal

Span
After
Screen shot of Li-800 calibration span post-cal

close gate and set up fence. YES!

Toniz_Floor 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 â€“ 5 v.)

Floor Gill sonic plots screen before downloading data

Screen shot of floor flux data logger table

Screen shot of floor flux data logger status window

downloading data from PC. YES!
Swapped the memory cards of CR1000.
Check MD-9 system connections YES!

CR23X3 â€“ floor-Met
CR23X6 â€“ tower-Met
CR10X2 â€“ floor-Met
Soil CO₂ profile: CR23X5 â€“ soil CO₂ profile
Screen shot of soil moisture data logger table

Screen shot of floor met data logger table

Screen shot of soil co2 data logger table

Screen shot of tower met data logger table

Screen shot of sap flow data logger table

Close gate and set up fence. YES!

Tonzi
Dendrometer

Date	Day	Tag #	Reading (mm)
6/19/2013	170	1	25
		2	18.2
		3	21.4
		4	4
		5	24.5
		7	18.2
		8	9.1
		72	15.5
		79	17.4
		102	20.1
		245	13.9

Field Data

No tank data

Well Depth

Date	Location	Depth (feet)
2013-06-19	TZ_floor	28.9
2013-06-19	TZ_road	37.3
2013-06-19	TZ_tower	33.2

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)
2013-06-19	1	25
2013-06-19	102	20.1
2013-06-19	2	18.2
2013-06-19	245	13.9
2013-06-19	3	21.4
2013-06-19	4	4
2013-06-19	5	24.5
2013-06-19	7	18.2
2013-06-19	72	15.5
2013-06-19	79	17.4
2013-06-19	8	9.1

Water Potential - mode: raw

Time	Species	Tree	readings (bar)
2013-06-19 12:16:00	OAK	102	-40	-15	-35	-27
2013-06-19 12:16:00	OAK	35	-35	-39	-36	-20
2013-06-19 12:16:00	OAK	92	-15	-28	-32
2013-06-19 12:16:00	PINE	OLD	-15	-20	-17
2013-06-19 12:16:00	PINE	YNG	-22	-12	-3.5	-9.5