When: Date: 12/27/2007 , Day: 361 , Watch Time: 11:00 .
Where: Tonzi/Vaira Ranch
Who: Siyan
Weather: cloudy, cold, frozen
Phenology: At Vaira, green grasses were still under yellow standing litters. At Tonzi, grasses was less than those at Vaira. Surface rain water in the bucket by the side of Tower was frozen.
Summary

1. EC systems at the three sites were working well. (A few days ago, Ted replaced the PC at the floor site because the PC kept on reboot all the time.)
2. Voltage meter of Vaira fence looks broken because the pointer was always on the far right side even though the switch was off.
3. Grass samples were collected for LAI and phenology in Tower and Vaira.
4. Dendrometer
5. Spectrum measurement
6. Soil TDR measurement wasn’t taken because Ben needed it at Shieman Island.

Vaira_Grass Site

1. Fence and gate power: >12 v.
2. Panel and Batteries: 13.3 v; 5.2 amps; 3.2 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_ 361 .flx D:\Data\VR07 .raw
	mean	std		mean	std
w	0.1	0.20	Ts	8.9	0.47
u	-0.37	0.39	H2O	1.33	0.02
v	0.65	0.60	CO2	2.43	0.012
			Tc	0.256	0.043

1. downloading data – Yes.
2. Swap Li-7500 analyzer. (Remove SN #73; install SN 42).
3. check the fans of air temp. and relative humidity sensors at Vaira. OK.
4. Check MD-9 system connections. OK.
5. Check levels of Radiation sensors, clear up surfaces. Yes.
6. Closed gate and set up fence. - Voltage meter of Vaira fence looks broken because the pointer was always on the far right side even though the switch was off.

Tonzi_Tower Site

1. Fence and gate power: >12 v.
2. Panel and Batteries: 13.7 v; 0.0 amps; 5.2 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\T07_ 361 .flx D:\Data\TW07 .raw
	mean	std		mean	std
w	-0.5	0.543	Ts	9.41	0.27
u	-0.35	0.9	H2O	1.42	0.017
v	2.36	0.68	CO2	2.35	0.009

1. downloading data Yes.
2. Swap Li-7500 analyzer. (Remove SN #0976; install SN 418).
3. check the fans of air temp. and relative humidity sensors on the tower and the floor. Yes.
4. Check calibration cylinders;

CO₂ 500 psig; flow 20 psi. (Tank: 422.2 ppm)
N₂ 500 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.
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.

403	398	399	401	2.5	42.6
950	943	942	942	951	948.8
43.3	43.2	43	43	42	42.9
48.9	48.9	48	48	48	48.5

1. close gate and set up fence. Yes.

Toniz_Floor Site

1. Fence and gate power: >12 v.
2. Panel and Batteries: 13.6 v; 14.4 amps; 2.3 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_ 333 .flx D:\Data\FL07 .raw
	mean	std		mean	std
w	-0.19	0.212	Ts	9.25	0.218
u	-0.66	0.35	H2O	1.69	0.036
v	0.35	0.304	CO2	1.98	0.029

1. downloading data. Yes.
2. Swap Li-7500 analyzer. (Remove SN #65; install SN 41).
3. Check MD-9 system connections. GOOD.

CR23X3 – floor-Met
CR23X5 – soil CO₂ profile
CR23X6 – tower-Met
CR10X2 – floor-Met
CR10X4 – sap-flow
CR10X7 – CO₂ profile
CR10X8 – wind profile

1. Soil CO₂ profile: in the lab
2. Close gate and set up fence. Yes.

Tonzi
Dendrometer
Date	Day	Tag #	Reading (cm)
12/272007	361	71	Broken
		72	6.2
		77	Broken
		78	Broken
		79	10.6
		245	4.9 (fixed)
		248	13.9
		250	8.9
		255	Broken
		252	missing
		102	5.2