When: Date: 7/12/08 , Day: 194 , Watch Time: 4:00pm .
Where: Tonzi/Vaira Ranch
Who: Siyan, Xingyuan
Weather: clear, breeze, hot
Phenology: yellow grasses and green oak leaves
Summary

1. Swapped Li-7500 at the three sites.
2. EC systems worked well. Dada were downloaded.
3. Checked the met data at Vaira. The morning gap problem has been fixed after repairs on July 4, 2008.
4. Pre-dawn water potential measurement: N2 gas tank may not be enough for mid-day measurements. May we move an extra tank from the tower to the understory area‌
5. Battery Voltage at the soil CO2 profile site may be too low!!! (11.1 v)

Vaira_Grass Site

1. Fence and gate power: 12 v.
2. Panel and Batteries: 12.9 v; 7.1 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\V08_ 194 .flx D:\Data\VR08 .raw
	mean	std		mean	std
w	0.2	0.367	Ts	33.8	0.88
u	0.35	0.819	H2O	3.05	0.299
v	2.89	1.00	CO2	1.80	0.721
			Tc	3.20	0.72

1. downloading data YES!
2. swaping Li-7500 Analyzer. (Remove SN# 41 ; install SN# 42 )
3. Check the fans of air temp. and relative humidity sensors at Vaira. YES!
4. Check MD-9 system connections YES!
5. Check CR23X with two multiplexers YES!
6. Check levels of Radiation sensors, clear up surfaces. YES!
7. Check rain gage, make sure not clogged. YES!
8. 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; 4.2 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\T08_ 194 .flx D:\Data\TW08 .raw
	mean	std		mean	std
w	0.5	0.373	Ts	31.0	0.21
u	2.31	0.551	H2O	3.08	0.2
v	0.10	0.033	CO2	1.504	0.8

1. downloading data YES!
2. swaping Li-7500 Analyzer. (Remove SN# 418 ; install SN# 65 )
3. check the fans of air temp. and relative humidity sensors on the tower and the floor.
4. Check rain gage, make sure not clogged.
5. Check calibration cylinders;

CO₂ 1600 psig; flow 18 psi.
N₂ 1600 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
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 v; 2.5 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\F08_ 194 .flx D:\Data\FL08 .raw
	mean	std		mean	std
w	0.33	0.38	Ts	30.9	2.1
u	1.17	0.45	H2O	2.67	2.7
v	0.57	0.4	CO2	1.62	3.0

1. downloading data
2. swaping Li-7500 Analyzer. (Remove SN# 73 ; install SN# 35 )
3. Check MD-9 system connections

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

1. Soil CO₂ profile

Reading from datalogger

Panel temp		3.6
Battery voltage		11.1 TOO LOW!!!
CO2E_1	160	TCE_1	44	CO2W_1	376	TCW_1	33
CO2E_2	251	TCE_2	43	CO2W_2	483	TCW_2	31
CO2E_3	443	TCE_3	40	CO2W_3	798	TCW_3	34
CO2E_4	622	TCE_4	38	CO2W_4	2052	TCW_4	36

Reading from panels of analyzers

depth	Open	order	depth	Tree	order
2cm (1%)	330	1	2cm (1%)	770	1
4cm	520	2	4cm	960	4
8cm	890	3	8cm	1650	2
16cm	1260	4	16cm	4100	3

1. Close gate and set up fence. YES!

Tonzi
Dendrometer
Date	Day	Tag #	Reading (cm)
7/12/2008	194	71	X
		72	9.1
		77	X
		78	X
		79	12.9
		245	4.1
		248	14.9
		250	10.0
		255	X
		‌252‌	X
		102	5.3

Notes: “X” means not working any more.

tonzi	7931AFE	402165	574B4B	402FF3	574632	7A432E	7A3C6E	7A3B40	7A4AAA
12-Jul-08	194
	SM
0-15	9.9	13.4	20.7	9.7	50.1	14.8	16.0	14.0	11.5
15-30	14.0	12.1	7.9	13.0	50.1	7.9	14.0	12.8	4.8
30-45	26.6	19.9	18.2	24.3	50.1	18.2	22.9	25.3	21.7
45-60	20.5	13.4	21.9	18.8	50.1	18.0	22.3	28.4	17.2
	A6D882B	A3D04E8	A6D72F5
0-15	17.0	14.6	10.9
15-30	7.5	7.5	11.5
30-45	25.3	26.2	21.1
45-60	26.0	20.7	9.9
vaira	57318a	7933dee
0-15	7.4	9.2
15-30	5.8	8.6
30-45	19.8	21.4
45-60	28.3	26.1