When: Date: 5/31/2007 , Day: 151 , Watch Time: 10:00 .
Where: Tonzi/Vaira Ranch
Who: Siyan, DDB, and Jessica
Weather: clear, nice breeze, moist
Phenology: yellow grass, grass died out. Green oak leaves with slight blue. Mr. Tonzi still worked on the new-cut tree. He said the tree probably 3,000 years old because other ~100 years old tree is much smaller than it. Dennis think he may not be right, probably ~300 years old.
Summary

1. swap Li-7500 on Vaira.
2. EC system at Vaira and Floor worked well. Data were downloaded.
3. Tower computer was stuck after I clicked the minimize button of flux window. After I restarted it, it started to reboot itself automatically every 3 minutes. Dennis couldn’t fix it in the field; we took the computer back to the lab.
4. Dennis worked on the computer this morning, and Tower flux and three-datalogger data were downloaded, but data from data-loggers: CR10_10, CR9, and CR10X7 were not renamed day by day. Ted, could you please take care of this. Thank you.
5. Dennis notes: (1) Ted, please bring in Fence/ground Rod at Vaira, around Hank generator area. (2) on May 24, Ted has new DLD on Vaira CR23X, but numeric output shows, repeat of Tc soil in 2 columns, no output of NDVI. Column out of file. It is just the DLD Assoc file as *.23x seem OK. (3) Lots of clovers. Good for N‌‌
6. CR10X12 – Xingyuan’s sap flow – disconnected to Floor computer!!!
7. grass sample for ANPP at Tonzi and Vaira
8. oak leaf and branches for N and area
9. read dendrometer
10. take spectrometer measurement (Youngryle in Korea)
11. the wheels of the cart need pump in air.

Vaira_Grass Site

1. Fence and gate power: >12 v.
2. Panel and Batteries: 13.7 v; 12.2 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_ 151 .flx D:\Data\VR07 .raw
	mean	std		mean	std
w	0.01	0.306	Ts	19.4	1.456
u	0.35	0.771	H2O	3.41	0.012
v	1.00	0.24	CO2	1.62	0.02
			Tc	2.0	0.15

1. downloading data OK
2. swaping Li-7500 Analyzer. (Remove SN# 65 ; install SN# 41 )
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. Done!
6. Closed gate and set up fence. Yes.

Tonzi_Tower Site

1. Fence and gate power: 12 v.
2. Panel and Batteries: 13.7 v; 12.2 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	12:03 (computer time‌ Definitely watch time.)
Path/File name	D:\Data\T07_151 .flx D:\Data\TW07 .raw
	mean	std		mean	std
w	-0.04		Ts	20.0
u	1.4		H2O	2.89
v	0.98		CO2	1.707

1. couldn’t download data because the computer restart itself every 3 minutes. Tower computer was stuck after I clicked the minimize button of flux window. After I restarted it, it started to reboot itself automatically every 3 minutes. Dennis couldn’t fix it in the field; we took the computer back to the lab.
2. check the fans of air temp. and relative humidity sensors on the tower and the floor. OK
3. Check calibration cylinders;

CO₂ 1100 psig; flow 18 psi.
N₂ 850 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. Dennis disconnected CO2 profile system.
2. close gate and set up fence. Yes.

Toniz_Floor Site

1. Fence and gate power: 12 v.
2. Panel and Batteries: 13.6 v; 8.5 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\F07_ 151 .flx D:\Data\FL07 .raw
	mean	std		mean	std
w	0.27	0.333	Ts	21.0	0.704
u	-0.11	1.400	H2O	2.551	0.025
v	0.8	0.941	CO2	1.014	0.014

1. downloading data
2. Check MD-9 system connections

CR23X3 – floor-Met
CR23X5 – soil CO₂ profile
CR23X6 – tower-Met
CR10X2 – floor-Met
CR10X4 – sap-flow
CR10X7 – CO₂ profile
CR10X8 – wind profile
CR10X12 – Xingyuan’s sap flow – disconnected!!!

1. Soil CO₂ profile

Reading from datalogger

Panel temp		30.7
Battery voltage		12.965
CO2E_1	315	TCE_1	38	CO2W_1	661	TCW_1	23
CO2E_2	362	TCE_2	40	CO2W_2	1662	TCW_2	21
CO2E_3	523	TCE_3	29	CO2W_3	2534	TCW_3	19
CO2E_4	816	TCE_4	26	CO2W_4	2361	TCW_4	20

Reading from panels of analyzers

depth	Open	order	depth	Tree	order
2cm (1%)	640	1	2cm (1%)	1080	1
4cm	750	2	4cm	4710	4
8cm	1060	3	8cm	1330	2
16cm	1660	4	16cm	0.6%	3

1. Close gate and set up fence.

31-May-07	151
	SM
0-15	8.2	5.4	16.3	5.5	#DIV/0!	7.0	8.6	4.6	4.6
15-30	15.0	14.0	12.7	14.1	#DIV/0!	7.9	14.0	12.3	4.2
30-45	20.0	11.1	11.8	16.7	#DIV/0!	11.7	14.6	18.9	15.6
45-60	16.9	6.6	9.8	16.9	#DIV/0!	12.7	14.8	23.4	12.1
	A6D882B	A3D04E8	A6D72F5
0-15	12.7	10.7	3.5
15-30	9.1	8.9	12.8
30-45	18.3	20.8	14.5
45-60	21.3	16.8	6.8
vaira	57318a	7933dee
0-15	2.5	0.7
15-30	5.9	8.9
30-45	10.4	11.4
45-60	12.0	15.2

Tonzi
Dendrometer
Date	Day	Tag #	Reading (cm)
5/31/2007	151	71	24.7
		72	23.6
		77	Broken
		78	Broken
		79	23.4
		245	22.7
		248	24.9
		250	21.9
		255	20.1
		‌252‌	missing
		102	Broken