Field Notes

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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.

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:

0 photos found

Graphs display:
7 sets found

No data found for SI_mp.
10 SI_met graphs found

Explore the graph:Solar Radiation in a new window

Explore the graph:Energy in a new window

Explore the graph:Soil Temperatures Set 1 in a new window

Explore the graph:Soil Temperatures Set 2 in a new window

Explore the graph:Soil Temperatures Set 3 in a new window

Explore the graph:Soil Temperature at -16cm in a new window

Explore the graph:Solar Radiation from CNR1 in a new window

Explore the graph:Sherman Island Rain in a new window

Explore the graph:Sherman Well Level in a new window

Explore the graph:Box Temperatures in a new window

Can't check SI_mixed
2 SI_mixed graphs found

Explore the graph:Theta Probes in a new window

Explore the graph:Sherman Island Air Temperatures in a new window

4 SI_flx graphs found

Explore the graph:Sonic Wind in a new window

Explore the graph:CH4 Concentrations in a new window

Explore the graph:Sample Counts in a new window

Explore the graph:LI7500 CO2 and H2O in a new window

No data found for SI_soilco2.
Can't check TWSI_mixed
Can't check SIMBTWEE_met