When: Date: 6/23/2007 , Day: 174 , Watch Time: 3:30pm .
Where: Tonzi/Vaira Ranch
Who: Siyan, Youngryel
Weather: clear
Phenology: yellow grass, green tree
Summary

1. swap Li-7500 on Tower and Floor
2. Tower EC system worked well. The screen showed “no signal”. Have talked with Ted about this. He recommended not restarting computer. Click “shift” once, then the screen will work fine.
3. The pump of CO2 profile failed. Notice Ted already.
4. correct PC and datalogger time with Cell Phone at floor sites, about 1 minute off.
5. soil moisture and dendrometer measurement. Done.
6. Help Youngryel sending 1hz tram program into the datalogger.
7. Help Youngryel take tree LAI measurement using LAI-2000 with two sets of sensors. Did two-sensor comparison before and after sunset. One set was placed on the top of tower, and the other was hold by Youngryel to do understory measurement (↑↓↓↓↓). I manually clicked the tower set to match the same pattern (↑↑↑↑↑). We try to know: (1) using 180^o mask won’t be different from none mask; (2) reference taken in the open area is not different from that taken on the top of tower. Youngryel took point measurement at each bar of tram station, repeating twice.

Vaira_Grass Site

1. Fence and gate power: 12 v.
2. Panel and Batteries: 13.4 v; 8.9 amps; 2.0 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\V07_ 174 .flx D:\Data\VR07 .raw
	mean	std		mean	std
w	-0.02	0.416	Ts	32.12	1.597
u	-2.27	0.969	H2O	1.221	0.021
v	2.7	0.054	CO2	1.269	0.027
			Tc	3.054	0.129

1. didn’t download data (forget where is the memory card.)
2. check the fans of air temp. and relative humidity sensors at Vaira. Good.
3. Check MD-9 system connections: Good.
4. Check levels of Radiation sensors, clear up surfaces. Done!
5. 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.)

Time
Path/File name	D:\Data\T07_ 174 .flx D:\Data\TW07 .raw
	mean	std		mean	std
w	0.42	0.99	Ts	28.36	1.22
u	3.77	0.92	H2O	1.57	0.06
v	3.16	1.36	CO2	1.47	0.1

1. didn’t download data (forget where is the memory card.)
2. swaping Li-7500 Analyzer. (Remove SN# 976 ; 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 1100 psig; flow 20 psi.
N₂ 800 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 No!!!! (Ted visited Tonzi today (Jun. 26, 2007).)
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: 12.8 v; 1.5 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\F07_ 174 .flx D:\Data\FL07 .raw
	mean	std		mean	std
w	-0.21	0.29	Ts	31.7	0.71
u	-0.81	1.37	H2O	1.193	0.02
v	-0.25	0.94	CO2	1.460	0.01

1. didn’t download data (forget where is the memory card.)
2. swaping Li-7500 Analyzer. (Remove SN# 73 ; install SN# 65 )
3. Check MD-9 system connections. All Good.
4. Soil CO₂ profile

Reading from datalogger

Panel temp		38.6
Battery voltage		12.4
CO2E_1	237	TCE_1	46	CO2W_1	449	TCW_1	36
CO2E_2	287	TCE_2	47	CO2W_2	539	TCW_2	31
CO2E_3	459	TCE_3	41	CO2W_3	1192	TCW_3	24
CO2E_4	559	TCE_4	33	CO2W_4	1450	TCW_4	27

Reading from panels of analyzers

depth	Open	order	depth	Tree	order
2cm (1%)	500	1	2cm (1%)	990	1
4cm	580	2	4cm	2890	4
8cm	870	3	8cm	1180	2
16cm	1140	4	16cm	0.49%	3

1. Close gate and set up fence. Yes.

Tonzi
Dendrometer
Date	Day	Tag #	Reading (cm)
6/23/2007	174	71	24.6
		72	23.5
		77	Broken
		78	Broken
		79	23.5
		245	22.8
		248	24.6
		250	22.0
		255	broken
		‌252‌	missing
		102	Broken

tonzi	7931AFE	402165	574B4B	402FF3	574632	7A432E	7A3C6E	7A3B40	7A4AAA
23-Jun-07	174
	SM
0-15	9.7	4.7	14.4	6.7	12.3	5.9	7.0	4.5	3.0
15-30	13.6	13.3	13.0	13.9	10.5	7.1	10.9	11.4	2.5
30-45	19.3	8.4	9.8	15.8	3.8	10.6	11.3	15.4	12.9
45-60	15.3	4.3	9.6	14.4	12.2	11.0	14.2	21.2	10.6
	A6D882B	A3D04E8	A6D72F5
0-15	10.0	6.7	2.7
15-30	6.8	6.9	11.1
30-45	15.4	18.2	11.8
45-60	19.9	11.9	4.3
vaira	57318a	7933dee
0-15	1.9	0.7
15-30	5.0	7.8
30-45	8.4	11.4
45-60	15.5	16.1