Field Notes
<--2007-10-11 11:30:00 | 2007-11-01 11:30:00-->Sherman Island: 2007-10-25 11:15:00 (DOY 298)
Author: Matteo Detto
Others: Ben
Summary: Methane was no operative (October 4th-25th) due to power loss; rain gauge was clogged; datalogger not storing values for rain gauge; collected data for Sherman Island; took moisture/soil samples.
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Sherman Island - Methane Study
Date: 25 October 2007
Day: 298
Standard Time in: 11:15 Out: 14:30
Who: MD & Ben
Weather: clear sky, light wind
Phenology: almost dry weed
Tasks
1. check and download data at Sherman Island
2. Take soil moisture and soil samples
Check list
1. Fence and gate power: OK
2. Datalogger Solar Panel and Batteries: OK
3. Reading from Gillsonic (H2O and CO2 should be in the range of 0 – 5 v.)
Time
Path/File D:\Data\SI07 .raw
mean std mean std
w 0.35 Ts 24.6
u 0.09 H2O 2.97
v 2.42 CO2 2.25
CH4 2.08
4. Methane Sensor (type Scroll Scroll 2)
Methane Hi-flow ppm 2.071
Cell Pressure – near 159 146 / 147 –after replacing 60micron filter
Cell Temperature 34.8
Mirror time 17.8
Sample rate 1 Hz !!!!! put back at 10 Hz @ 11:30
Methane low flow put back in high flow !
Pump status
Filter Status
Water traps
5. If Swapping Li-7500 Analyzer. (Remove SN# ; install SN# )
6. Check the fans of air temp. and relative humidity sensors
7. Check MD-9 system connections
8. Check CR23X with two multiplexers and sensor values
9. Check levels of Radiation sensors, clear up surfaces.
Closed gate and set up fence.
Other Notes:
The methane laser was set at 1 Hz,
from October 4 to October 25 (277-297) the methane was not operative for
several reasons:
Take to LOS GATOS for tuning up and mirror cleaning
Power losses
Set at 1Hz
The rain gauge was completely clogged, I cleaned, I tested. The datalogger reads the switches, but it doesn’t store the values – speak to Ted about that.
Water table 3.87†= 117.95 cm from the top of the tube
Remember next time to:
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0 photos found
7 sets found
No data found for SI_mp.
10 SI_met graphs found
Can't check SI_mixed
2 SI_mixed graphs found
4 SI_flx graphs found
No data found for SI_soilco2.
Can't check TWSI_mixed
Can't check SIMBTWEE_met