When: Date: 6/10/2010 , Day: 161 , Watch Time: 10:00 .
Where: Tonzi/Vaira Ranch
Who: Siyan, Dennis, Jacyln
Weather: hot, nice breeze
Phenology: 90% yellow grass at Vaira, 50% yellow grass at Tonzi, green oak leaves

Tonzi

Summary

1. check the direction of the “N” bar of the sonic anemometer

Tonzi - Sonic: 70 degree W from Meg north;
Vaira – Sonic: 0 degree from Meg. North

1. check and download data at Tower, Floor, and Vaira
2. calibrate Li-800 in the field because bump was dead.
3. collected samples of dry grasses, green grasses, oak leaves and pin needles
4. dendrometers
5. soil moisture
6. groundwater well:

Date	DOY	Location	Depth from the black thing (feet)
6/10/2010	161	Floor	20.43
		Tower	24.5
		roadside	29.675

Vaira_Grass Site

1. Fence and gate power: 12 v.
2. Panel and Batteries: 13.4 v; 13.3 amps; 2.4 amps.
3. Reading from Gillsonic screen before downloading data. (The value of H₂O and CO₂ should be in the range of 0 – 5 v.)

Vaira computer clock: 3 min faster than cell phone’s 9.21 am – fixed at ~9:34 am

1. downloading data YES!
2. Check the fans of air temp. and relative humidity sensors at Vaira. YES!
3. Check MD-9 system connections YES!
4. Check CR23X with two multiplexers

1. Check levels of Radiation sensors, clear up surfaces.YES!
2. Check rain gage, make sure not clogged. YES!

Dennis Baldocchi to Joseph, Siyan show details Jun 11 (4 days ago) Joe Siyan and I tried to debug the rain gauge problem. 1. I inspected the sensor and it was clean and ok. 2. checked wires and connections and they seemed ok..Wire went to P1..as it is a pulse counting sensor 3. Tipped the sensor multiple times and Siyan was able to read it on the datalogger.. 4. We saw NO counts for the 30 min reading.. 5. Checked program and it seems ok..The input was P1 and the output was location 30 It read like the example in the manual (though for a CR10x) 1: Pulse (P3) 1: 1 Reps 2: 1 Pulse Channel 1 3: 2 Switch Closure, All Counts 4: 30 Loc [ Rain_mm ] 5: 0.254 Multiplier 6: 0 Offset The 30 value is totalized: 5: Totalize (P72) 1: 1 Reps 2: 30 Loc [ Rain_mm ] So at this point not sure what else to say or do‌‌ Or know why it quit working and giving spurious data..

1. Closed gate and set up fence. YES!

Tonzi_Tower Site

1. Fence and gate power: 12 v.
2. Panel and Batteries: 12.7 v; 0.0 amps; 5.6 amps.
3. Reading from Gillsonic screen before downloading data. (The value of H₂O and CO₂ should be in the range of 0 – 5 v.)

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

CO₂ 500 psig; flow 20 psi; 418.8 ppm.
N₂ 2000 psig; flow 20 psi.
Manually calibrate Li-800. Following Ted’s instruction: H:\IoneSavanna_2004\Tower_2004\CO2Profile\LI800_Calibration_Procedure_2Nov04.txt
Is the pump running‌ YES.

before zero

after zero

before span

after span

1. close gate and set up fence. YES!

Toniz_Floor Site

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

1. downloading data YES!
2. Check MD-9 system connections YES!

CR23X3 – floor-Met


CR23X5 – soil CO₂ profile
No connection. Dennis fixed it but lost it again.

CR23X6 – tower-Met

CR10X2 – floor-Met

1. Soil CO₂ profile: no power when I got there. I unplug and re-plug fuses, then the system back to work.

Reading from datalogger

Reading from panels of analyzers

depth	Open	order	depth	Tree	order
2cm (1%)	970	1	2cm (1%)	3620	1
4cm	830	2	4cm	4910	4
8cm	1800	3	8cm	4690	2
16cm	1550	4	16cm	8190	3

1. Close gate and set up fence. YES!

tonzi	7931AFE	402165	574B4B	402FF3	574632	7A432E	7A3C6E	7A3B40	7A4AAA
6/10/2010	161
	sm
0-15	8.8	6.1	#DIV/0!	8.1	13.1	6.0	11.5	8.7	5.5
15-30	15.3	13.2	23.9	14.7	14.4	11.5	16.4	15.6	6.1
30-45	20.9	16.1	34.0	18.3	11.6	12.3	17.0	19.6	17.9
45-60	21.5	13.4	32.9	21.2	27.3	15.9	17.7	29.3	14.3
	A6D882B	A3D04E8	A6D72F5
0-15	11.5	5.0	5.2
15-30	12.9	2.3	17.8
30-45	19.8	18.4	20.9
45-60	21.3	26.1	21.9
vaira	57318a	7933dee
0-15	1.9	4.4
15-30	12.9	12.8
30-45	12.4	16.7
45-60	broken	27.9

Emails from Dennis about this trip:

Dennis Baldocchi to Joseph, Jaclyn, Matteo, Siyan show details Jun 11 (4 days ago) Joe After 10 years we have a few moisture point probes that are giving us fits and need to be pulled and sent to the manufacture for repair while are grants are still in action. There are 2 or so at Sherman Island..I have asked Jaclyn to pull those next time. There is also a problem with the probe at Vaira..the one between the solar panel and the radiation station. One of the pins was bent..and looks like it had been bent repeatedly..I tried to put it back in position but the metal as so weak by this stage it broke. It seems it only affects the measurements at the 45-60 cm range....as all readings were 41.9%%...Something we see also at Sherman for mal functioning sensors... So we should pull this one next time too and send it back with the others for repair.. Thanks Dennis Baldocchi Professor of Biometeorology Department of Environmental Science, Policy and Management & Berkeley Atmospheric Science Center 137 Mulford Hall (mail) 345 Hilgard Hall (office) University of California, Berkeley Berkeley, CA ph: 510 642 2874 Fax: (510) 643-5438 email: baldocchi@berkeley.edu web: nature.berkeley.edu/biometlab

Tonzi
Dendrometer
Date	Day	Tag #	Reading (mm)
6/10/2010	161	72	11.1
		79	15.8
		245	12.9
		250	21.9	(reset to 10.5 on May 7, 2009)
		102	X
		1	20.9
		2	11
		3	18.3
		4	9.6
		5	13.1
		7	16.8	133
		8	16.9	11828
		71	X
		77	X	‌
		78	X	‌
		248	X	broken
		255	X	‌
		‌252‌	X	‌
		6	X

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