When: Date: 11/07/2007 , Day: 311 , Watch Time: 10:15am .
Where: Tonzi/Vaira Ranch
Who: Siyan
Weather: clear, hot
Phenology: The sites still looked yellow overall. Young grasses that germinated under litters got dry again. No new germination yet. Some big oak trees (e.g. Liukang’s tree) produced acorns this year, and their leaves were still green. Collected some acorns under Liukang’s tree (#92) and around Tree #11.
Summary

1. CO2 tank is very low (~400 psi).
2. Three towers worked well.
3. RRR parked 1 m away from the other end of charge-station. I followed Ted’s instruction, disconnected battery and took the whole cart back to the lab.
4. Sampled senescent oak leaves for Stefania’s nitrogen resoption testing.
5. Took spectrometer measurement at Vaira and Tonzi.
6. Took TDR probe measurement.

Vaira_Grass Site

1. Fence and gate power: 12 v.
2. Panel and Batteries: 13.8 v; 13.7 amps; 1.7 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_ 311 .flx D:\Data\VR07 .raw
	mean	std		mean	std
w	0.15	0.22	Ts	21.8	0.72
u	0.30	0.21	H2O	1.84	0.026
v	0.97	0.71	CO2	1.88	0.027
			Tc	2.09	0.112

1. I did not downloaded data because I forgot bring the memory drive.
2. check the fans of air temp. and relative humidity sensors at Vaira. OK.
3. Check MD-9 system connections. OK.
4. 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; 4.1 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_ 311 .flx D:\Data\TW07 .raw
	mean	std		mean	std
w	0.35	0.4	Ts	23.1	0.45
u	0.78	0.6	H2O	2.07	0.01
v	1.7	0.5	CO2	1.056	0.017

1. downloading data (Not)
2. check the fans of air temp. and relative humidity sensors on the tower and the floor.
3. Check calibration cylinders;

CO₂ 500 psig; flow 20 psi.
N₂ 1000 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. CR10X7 – CO₂ profile

394.3	394.9	395.3	395.3
948.7	942.5	943.3	942.8
45.0	45.1	45.1	45.2
49.7	49.8	49.8	49.7

-3.48	421.5
948.5	946
43.8	43.4
49.4	49.4

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. OK.

Toniz_Floor Site

1. Fence and gate power: 12 v.
2. Panel and Batteries: 13.5 v; 9.0 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_ 311 .flx D:\Data\FL07 .raw
	mean	std		mean	std
w	0.2	0.324	Ts	23.45	0.213
u	-0.75	0.275	H2O	2.2	0.088
v	0.95	0.502	CO2	1.7	0.025

1. Check MD-9 system connections. OK.
2. Soil CO₂ profile: probes are in the lab for calibration.
3. Close gate and set up fence. Yes.

Soil Moisture

vaira	57318a				7933dee
0-15	3.9	3.6	3.9		8.8	9.7	9.4
15-30	5.1	4.8	5.4		6.9	7.2	6.6
30-45	10.1	10.1	10.1		11.5	11.5	11.5
45-60	12.5	12.8	12.2		16.8	15.3	15.3

1. Close gate and set up fence.

Tonzi
Dendrometer
Date	Day	Tag #	Reading (cm)
11/07/2007	311	71	Broken
		72	1.9
		77	Broken
		78	Broken
		79	6.2
		245	3.8
		248	‌
		250	4.0
		255	‌
		‌252‌	Missing
		102	3.8