When: Date: 8/10/2007 , Day: 222 , Watch Time: 10:00m .
Where: Tonzi/Vaira Ranch
Who: Siyan, DDB
Weather: clear, nice breeze
Phenology: yellow grass; a lot of tree leaves turn to yellow (~30%) and leaves started to drop.
DDB talked to Mr. Toniz. Mr. Tonzi mentioned that grazing intensity is around 100 cows per 900 acres.
Julian Hadley visited the sites.
Summary

1. Three EC system worked well. Data were download.
2. Tower computer: “No signals” on the Screen.
3. Dendrometers were reset to zero. Initial settings were recorded.
4. Soil CO2 profile sensors were pulled out of soil for zero comparison. Sensors were taken back to the lab for calibration check.
5. Computer at the floor site lost the communication with soil CO2 profile datalogger a few minutes after a successful connection. Data at 14:00pm did not wrote to CR23X3.dat.

Vaira_Grass Site

1. Fence and gate power: 12 v.
2. Panel and Batteries: 13.5 v; 13.4 amps; 3.4 amps.
3. Reading from Gillsonic screen before downloading data. (The value of H₂O and CO₂ should be in the range of 0 – 5 v.)

Time
Path/File name	D:\Data\V07_ 222 .flx D:\Data\VR07 .raw
	mean	std		mean	std
w	0.22	0.34	Ts	28.2	0.074
u	1.89	0.62	H2O	1.7	0.02
v			CO2	1.6	0.029
			Tc	2.42	0.093

1. check the fans of air temp. and relative humidity sensors at Vaira. Good.
2. Check MD-9 system connections: Good.
3. Check levels of Radiation sensors, clear up surfaces. Done!
4. Closed gate and set up fence. Yes.

Tonzi_Tower Site

1. Fence and gate power: 12 v.
2. Panel and Batteries: 13.4 v; 0.0 amps; 4.1 amps.
3. Reading from Gillsonic screen before downloading data. (The value of H₂O and CO₂ should be in the range of 0 – 5 v.)
4. “No signals” on the Screen.

Time
Path/File name	D:\Data\T07_ 174 .flx D:\Data\TW07 .raw
	mean	std		mean	std
w	0.18	0.643	Ts	27.151	0.106
u	1.54	1.669	H2O	3.111	0.211
v	2.8	1.329	CO2	1.543	0.128

1. download data
2. check the fans of air temp. and relative humidity sensors on the tower and the floor.
3. Check calibration cylinders;

CO₂ 800 psig; flow 20 psi.
N₂ 350 psig; flow 20 psi. (It may be low!)
Manually calibrate Li-800. Following Ted’s instruction: H:\IoneSavanna_2004\Tower_2004\CO2Profile\LI800_Calibration_Procedure_2Nov04.txt
Is the pump running‌ Yes.

	1	2	3	4		zero	span
CO2_P	378.1	379.1	377.8	377.5		-0.33	424
Press	938.3	931.4	931.7	931.9		942	940.8
S_temp	45.9	46	46	45.9		455	45.4
C_temp	50.1	50	50.1	50.9		49.7	49.7

How to check the CO2 values‌ Click “Ports/Flags” button to see which ports or flags is setting high. Pressure should be less than ambient value. When Flag 8 is high, it may indicate that RRR’s battery is low.

1. close gate and set up fence. Yes.

Toniz_Floor Site

1. Fence and gate power: 12 v.
2. Panel and Batteries: 13.3 v; 12.6 amps; 2.1 amps.
3. Reading from Gillsonic screen before downloading data. (The value of H₂O and CO₂ should be in the range of 0 – 5 v.)

Time
Path/File name	D:\Data\F07_ 174 .flx D:\Data\FL07 .raw
	mean	std		mean	std
w	-0.03		Ts	28.7
u	0.07		H2O	2.11
v	1.19		CO2	1.662

1. download data
2. Check MD-9 system connections. Sometimes it is Good, but sometimes it is not.
3. Soil CO₂ profile: Soil CO2 profile sensors were pulled out of soil for zero comparison. Sensors were taken back to the lab for calibration check.

Reading from panels of analyzers before pulling out:

depth	Open	temp	order		In the air
2cm (1%)	201.98	40.3	1	520	410
4cm	223.85	48.4	2	580	440
8cm	179.3	36.2	3	670	430
16cm	135.59	30.1	4	810	620
depth	Tree	temp	order
2cm (1%)	169.03	28.9	1	690	390
4cm	139.89	24.0	4	1900	360
8cm	142.87	27.6	2	780	310
16cm	218.4	23.0	3	0.31%	0.10%

1. Close gate and set up fence. Yes.

Dendrometers were reset to zero. Initial settings were recorded.

Tonzi
Dendrometer
				Reset-up
Date	Day	Tag #	Reading (cm)	Initial reading
8/10/2007	222	71	23.9	Broken
		72	23.3	0.5
		77	Broken	Broken
		78	Broken	Broken
		79	22.9	3.9
		245	23.7	1.6
		248	24.4	2.9
		250	21.5	1.4
		255	broken	Broken
		‌252‌	missing	Broken
		102	reset	4.1