When: Date: 4/24/2009 , Day: 114 , Watch Time: 9:00am .
Where: Tonzi/Vaira Ranch
Who: Siyan, Gretchen
Weather: a little bit rain in the early morning, then cloudy, then sunshine
Phenology: yellow, purple flowers at Tonzi, yellow, purple, white flowers at Vaira

Summary:

1. swapped Li-7500 at Tower and Floor
2. swapped CR23X datalogger for Tower met (tz6)
3. checked and downloaded data at Tower, Floor, and Vaira
4. Calibrated Li-800 in the field (bring the copy of Ted’s instruction).
5. took spectrometer measurement
6. camera
7. Link to screen copies from Tower PC
8. Link to screen copies from Floor PC
9. Link to screen copies from Vaira PC

Vaira_Grass Site

1. Fence and gate power: 12 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.)

1. downloading data YES!
2. Check the fans of air temp. and relative humidity sensors at Vaira. YES!
3. Check MD-9 system connections YES!
4. Check CR23X with two multiplexers YES!
5. Check levels of Radiation sensors, clear up surfaces.

1. Check rain gage, make sure not clogged. YES!
2. Closed gate and set up fence. YES!

Tonzi_Tower Site

1. Fence and gate power: 12 v.
2. Panel and Batteries: 12.9 v; 0.0 amps; 5.9 amps.
3. Reading from Gillsonic screen before downloading data. (The value of H₂O and CO₂ should be in the range of 0 – 5 v.)

1. downloading data YES!
2. swaping Li-7500 Analyzer. (Remove SN# 418 ; install SN# 976 )
3. check the fans of air temp. and relative humidity sensors on the tower and the floor. YES!
4. Check rain gage, make sure not clogged. YES!
5. Check calibration cylinders; YES!

CO₂ 1500 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!
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
See wrong message

1. Fence and gate power: 12 v.
2. Panel and Batteries: 12.6 v; 4.2 amps; 3.8 amps.
3. Reading from Gillsonic screen before downloading data. (The value of H₂O and CO₂ should be in the range of 0 – 5 v.)

1. downloading data YES!
2. swaping Li-7500 Analyzer. (Remove SN# 35 ; install SN# 73 )

1. Check MD-9 system connections YES!

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

1. Close gate and set up fence. YES!