When:  Date:   4/30/2010    ,  Day:   120     ,  Watch Time:     6:10am              .

Where:  Tonzi/Vaira Ranch

Who:  Siyan

Weather: clear, beautiful sunshine

Phenology: A lot of dew on the grass leaf surface in the morning; Grass in reproduction stage; Yellow flowers, purple; Tree No.92 see acorn follower; Tall grass at Vaira, as tall as my leg.

Tonzi
Vaira:

Summary

1. Tram was working well.
2. Pre-dawn leaf water potential: oak leaf= -2.7 bar; pin needle=-6 bar.
3. A-Ci curves for oak and gray pine
4. check and download data at Tower, Floor, and Vaira
5. Didn’t calibrate Li-800 in the field because N2 tank was almost empty. 
6. collected samples of oak leaves and pin needles
7. dendrometers
8. soil moisture
9. groundwater well:

Vaira_Grass Site

1. Fence and gate power:  red_s  12 (was not on) e_red    v.
2. Panel and Batteries:   red_s13.5  e_red     v;    red_s14.6     e_red amps;   red_s 3.6    e_red amps.
3. Reading from Gillsonic screen before downloading data.  (The value of H₂O and CO₂ should be in the range of 0 – 5 v.)

4. downloading data YES!
5. Check the fans of air temp. and relative humidity sensors at Vaira.  YES!
6. Check MD-9 system connections YES!
7. Check CR23X with two multiplexers 

8. Check levels of Radiation sensors, clear up surfaces.YES!
9. Check rain gage, make sure not clogged. YES!
10. Closed gate and set up fence. YES!

Tonzi_Tower Site

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

4. downloading data   YES!
5. check the fans of air temp. and relative humidity sensors on the tower and the floor.  YES!
6. Check rain gage, make sure not clogged. YES!
7. Check calibration cylinders;

CO₂  red_s   500    e_red psig; flow   red_s       e_red psi;        red_s   431.25        e_red  ppm.

N₂       red_s    almost 0   e_red  psig; flow   red_s      e_red  psi.

            Manually calibrate Li-800.  Following Ted’s instruction: H:\IoneSavanna_2004\Tower_2004\CO2Profile\LI800_Calibration_Procedure_2Nov04.txt

Is the pump running? red_sSounds OK.e_red

8. close gate and set up fence. YES!

Toniz_Floor Site

1. Fence and gate power:  red_s    12   e_redv.
2. Panel and Batteries:  red_s  14.7     e_red v;   red_s 16.7     e_red amps;    red_s   1.9  e_red  amps. (about 7:00 am local time)
3. Reading from Gillsonic screen before downloading data.  (The value of H₂O and CO₂ should be in the range of 0 – 5 v.)

4. downloading data  YES!
5. Check MD-9 system connections  YES!

CR23X3 – floor-Met

CR23X5 – soil CO₂ profile

CR23X6 – tower-Met

CR10X2 – floor-Met

6. Soil CO₂ profile: no power when I got there.  I unplug and re-plug fuses, then the system back to work.

Reading from datalogger

Reading from panels of analyzers

7. clean up flat camera’s surface. YES!
8. Close gate and set up fence. YES!

Notes: “X” means not working any more.

Dendrometers installed by Gretchen group