When: Date: 7/31/2008 , Day: 213 , Watch Time: 9:00am .
Where: Tonzi/Vaira Ranch
Who: Siyan, Jessica
Weather: clear, hot, breeze
Phenology: dry yellow grasses, tree leaves started turning into yellow or yellow spots from the top, many dead branches, see acorn in some big tree (e.g., #92)
Summary:

1. Three EC systems worked well.
2. CO2 profile’s “cal zero” was not zero. Pump wasn’t working. Called Dennis and would fix next visit.
3. Soil CO2 profile’s morning gaps were fixed after Dennis cleaned up the connections on the batteries.
4. tree leaf samples for LMA.
5. Read dendrometers.
6. measured soil moisture.

Vaira_Grass Site

1. Fence and gate power: v.
2. Panel and Batteries: v; amps; 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_ .flx D:\Data\VR08 .raw
	mean	std		mean	std
w			Ts
u			H2O
v			CO2
			Tc

1. downloading data
2. swaping Li-7500 Analyzer. (Remove SN# ; install SN# )
3. Check the fans of air temp. and relative humidity sensors at Vaira.
4. Check MD-9 system connections
5. Check CR23X with two multiplexers

Sys_vot =
PC_start =

1. Check levels of Radiation sensors, clear up surfaces.
2. Check rain gage, make sure not clogged.
3. Closed gate and set up fence.

Tonzi_Tower Site

1. Fence and gate power: v.
2. Panel and Batteries: v; amps; 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_ .flx D:\Data\TW08 .raw
	mean	std		mean	std
w			Ts
u			H2O
v			CO2

1. downloading data
2. swaping Li-7500 Analyzer. (Remove SN# ; install SN# )
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 psig; flow psi.
N₂ psig; flow 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	2	3	4	zero	span

1. close gate and set up fence.

Toniz_Floor Site

1. Fence and gate power: v.
2. Panel and Batteries: v; amps; 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_ .flx D:\Data\FL08 .raw
	mean	std		mean	std
w			Ts
u			H2O
v			CO2

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

1. 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

1. Soil CO₂ profile

Reading from datalogger

Panel temp
Battery voltage
CO2E_1		TCE_1		CO2W_1		TCW_1
CO2E_2		TCE_2		CO2W_2		TCW_2
CO2E_3		TCE_3		CO2W_3		TCW_3
CO2E_4		TCE_4		CO2W_4		TCW_4

Reading from panels of analyzers

depth	Open	order	depth	Tree	order
2cm (1%)		1	2cm (1%)		1
4cm		2	4cm		4
8cm		3	8cm		2
16cm		4	16cm		3

1. Close gate and set up fence.

Tonzi
Dendrometer
Date	Day	Tag #	Reading (cm)
		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.