When: Date: 11/29/2007 , Day: 333 , Watch Time: 10:00 .
Where: Tonzi/Vaira Ranch
Who: Siyan and Rodrigo
Weather: clear, nice cold
Phenology: Vaira grass almost covered 100% area, but standing litters were still thick. Overall, the grassland is in yellow. Tonzi’s grass covered about 70%. Some blue oak’s leaves were still green.
Summary

1. EC system at Tower and Vaira were working well. Floor computer didn’t reboot properly in the morning on Day 325. So, flux data were lost between Day 325-333. Ted reported low power problem after his last visit. Maybe we have to add two more batteries at Floor site to solve the winter power problem. Met data are good.
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. CO2 Tank was low, around 200 psig.
4. Grass samples were collected for LAI and phenology in Tower and Vaira, oak leaves sample for N.
5. Dendrometer – tree stem enlarged 3mm since Nov. 07, 2007.
6. Plan to take spectrum measurement, but forget charging laptop’s battery. Sorry!
7. Rodrigo helped to do soil TDR measurement and found that same readings for time delay but reported different soil moisture values. Matteo noticed the problem at Shieman Island, too.

Vaira_Grass Site

1. Fence and gate power: >12 v.
2. Panel and Batteries: 13.3 v; 0.0 amps; 4.7 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_ 333 .flx D:\Data\VR07 .raw
	mean	std		mean	std
w	0.18	0.238	Ts	13.9	0.354
u	0.91	0.360	H2O	1.8	0.030
v	-0.25	0.326	CO2	2.14	0.020
			Tc	1.001	0.057

1. downloading data – Yes.
2. check the fans of air temp. and relative humidity sensors at Vaira. OK.
3. Check MD-9 system connections. OK.
4. Check levels of Radiation sensors, clear up surfaces. Yes.
5. 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: Gate was open! v.
2. Panel and Batteries: 13.9 v; 15.1 amps; 2.9 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_ 333 .flx D:\Data\TW07 .raw
	mean	std		mean	std
w			Ts
u			H2O
v			CO2

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

CO₂ 200 psig; flow 20 psi.
N₂ 700 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.

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	-0.01	0.272	Ts	13.79	0.852
u	1.67	1.65	H2O	2.45	0.126
v	0.47	0.765	CO2	1.69	0.081

1. downloading data. Yes.
2. 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	7931AFE	402165	574B4B	402FF3	574632	7A432E	7A3C6E	7A3B40	7A4AAA
29-Nov-07	333
	SM
0-15	9.8	7.9	25.6	13.2	11.6	11.2	14.5	5.9	7.8
15-30	13.2	14.3	16.2	17.1	13.5	9.2	17.4	14.2	4.4
30-45	17.5	7.1	5.4	14.2	1.7	8.8	13.2	16.5	13.0
45-60	11.7	3.6	8.5	8.7	15.1	10.5	11.3	15.4	9.6
	A6D882B	A3D04E8	A6D72F5
0-15	21.1	16.5	6.3
15-30	11.8	10.3	14.9
30-45	14.3	16.2	12.2
45-60	13.0	5.5	2.6
vaira	57318a	7933dee
0-15	2.2	5.5
15-30	9.7	13.6
30-45	8.9	11.9
45-60	14.9	15.3

Tonzi
Dendrometer
Date	Day	Tag #	Reading (cm)
11/29/2007	333	71	Broken
		72	4.2
		77	Broken
		78	Broken
		79	8.1
		245	-0.1
		248	9.7
		250	7.4
		255	Broken
		‌252‌	missing
		102	4.0