When: Date: 3/6/3008 , Day: 66 , Watch Time: 10:30 .
Where: Tonzi/Vaira Ranch
Who: DDB and Siyan
Weather: clear with light, white cloud in the morning; cloudy in the afternoon, and Youngryle was able to take tree LAI measurements.
Phenology: grasses grew stronger. Some are tillerring (2-3).
Summary

1. CO2 profile: flow rate of CO2 tank need to be double checked since the tank pressure seems running down fast.
2. DDB installed soil CO2 probes!!! Floor computer successfully connected to the datalogger.
3. Checked and download data at Tower, Floor, and Vaira. The three EC systems worked well.
4. Collected grass sample for LAI and phenology in Tower and Vaira, oak branches for N
5. Read dendrometers.
6. spectrometer (Youngryle)

Vaira_Grass Site

1. Fence and gate power: >12 v.
2. Panel and Batteries: 13.9 v; 14.1 amps; 2.7 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\V08_ 66 .flx D:\Data\VR08 .raw
	mean	std		mean	std
w	0.29	0.425	Ts	17.508	0.484
u	2.88	1.171	H2O	2.05	0.07
v	-1.91	0.974	CO2	1.98	0.022
			Tc	1.421	0.051

1. downloading data Yes!
2. swaping Li-7500 Analyzer. (Remove SN# 42 ; install SN# 976 )
3. check the fans of air temp. and relative humidity sensors at Vaira.
4. Check MD-9 system connections. Yes!
5. Check levels of Radiation sensors, clear up surfaces. Yes!

9. Closed gate and set up fence. Yes!

Tonzi_Tower Site

1. Fence and gate power: >12 v.
2. Panel and Batteries: 13.3 v; 0.0 amps; 5.0 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\T08_ 66 .flx D:\Data\TW08 .raw
	mean	std		mean	std
w	0.03	0.55	Ts	8.9	0.279
u	-2.13	0.79	H2O	1.66	0.026
v	1.36	0.66	CO2	2.009	0.07

1. downloading data
2. swaping Li-7500 Analyzer. (Remove SN# 418 ; install SN# 35 )
3. check the fans of air temp. and relative humidity sensors on the tower and the floor.
4. Check calibration cylinders;

CO₂ 1000 psig; flow 20 psi. (431.8 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!

1	2	3	4	zero	span
437	437	439.8	437.1	1.47	488.95
939	939	939	939.9	939.7	939.86
45.7	45.6	45.5	45.6	44.5	44.3
49.9	49.9	49.9	49.9	49.1	49.1

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; 11.2 amps; 1.8 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\F08_ 66 .flx D:\Data\FL08 .raw
	mean	std		mean	std
w	0.23	0.236	Ts	18.630	1.144
u	-1.8	0.313	H2O	2.319	0.211
v	0.17	0.246	CO2	1.873	0.035

1. downloading data
2. swaping Li-7500 Analyzer. (Remove SN# 41 ; install SN# 65 )

1. Check MD-9 system connections

CR23X3 – floor-Met Yes!
CR23X5 – soil CO₂ profile Yes!
CR23X6 – tower-Met Yes!
CR10X2 – floor-Met Yes!
CR10X4 – sap-flow Yes!
CR10X7 – CO₂ profile (to Tower PC)
CR10X8 – wind profile Yes!

1. Soil CO₂ profile; DDB installed soil CO2 probes!!! Floor computer successfully connected to the datalogger.
2. Close gate and set up fence. Yes!

tonzi	7931AFE	402165	574B4B	402FF3	574632	7A432E	7A3C6E	7A3B40	7A4AAA
6-Mar-08	66
	SM
0-15	37.5	34.9	18.4	40.4	39.2	20.1	40.2	47.3	35.0
15-30	31.9	34.2	31.9	40.0	23.7	24.9	43.7	30.9	35.1
30-45	38.2	23.0	28.7	40.9	28.5	27.7	43.7	30.0	36.7
45-60	26.6	23.9	20.4	39.2	31.2	33.8	39.8	34.0	37.3
	A6D882B	A3D04E8	A6D72F5
0-15	42.2	42.1	27.2
15-30	53.9	34.8	43.6
30-45	57.8	41.1	49.9
45-60	46.0	46.6	49.3
vaira	57318a	7933dee
0-15	21.9	18.6
15-30	25.2	30.8
30-45	29.2	29.7
45-60	32.1	36.8

Tonzi
Dendrometer
Date	Day	Tag #	Reading (cm)
3/6/2008	66	71	X
		72	7.1
		77	X
		78	X
		79	11.5
		245	3.1
		248	12.1
		250	8.2
		255	X
		‌252‌	X
		102	4.7

Notes: “X” means not working any more.