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Field Notes

<--2007-08-31 10:40:00 | 2007-09-20 16:20:00-->

Sherman Island: 2007-09-07 11:30:00 (DOY 250)
Author: Dennis Baldocchi
Others: Matteo Detto and Kate

Summary: Power was lost on the 7th from 3am-5am and methane sensor did not restore; LI-corr 7500 power cable replaced; took soil moisture; data collected from laser & Sherman Island.

Sherman Island - Methane Study

Date: 7 September 2007

Day: 250

Standard Time in: 10:20 Out: 11:30

Who: DB, MD, kate

Weather: windy, fog-overcast

Phenology: pepper weed flowering and green up again, dead leaves dropped

Tasks

  1. check and download data at Sherman Island
  2. download data from laser
  3. Take soil moisture
  4. other: -------------

Check list

  1. Fence and gate power: OK
  2. Datalogger Solar Panel and Batteries: 13.8
  4. Reading from Gillsonic (H2O and CO2 should be in the range of 0 – 5 v.)

Time

Path/File name

D:\Data\SI07 .raw

mean

std

mean

std

w

-1.67

Ts

20.6

u

1.48

H2O

3.4

v

6.6

CO2

1.5

CH4

0.002

  1. Methane Sensor (type Scroll Scroll 2)

Methane Hi-flow ppm

1.830

Cell Pressure – near 159

158.07

Cell Temperature

27.3

Mirror time

14.8

Sample rate

10 Hz

Methane low flow put back in high flow !

Pump status

Filter Status

Water traps

  1. If Swapping Li-7500 Analyzer. (Remove SN# ; install SN# )
  2. Check the fans of air temp. and relative humidity sensors
  3. Check MD-9 system connections
  4. Check CR23X with two multiplexers and sensor values
  5. Check levels of Radiation sensors, clear up surfaces.

Closed gate and set up fence.

Other Notes:

09-07-07 at 3 AM (approx) until 5 AM (approx) we lost power. The CO2 station automatic restored, methane sensor not.

Dennis swapped power supply cable of Li-corr 7500

Water table 4 ft + 9.5 tenth = 102.61 (double check next time)

Remember next time to:

0 photos found

Graphs display:
7 sets found

No data found for SI_mp.
10 SI_met graphs found

Solar Radiation

Energy

Soil Temperatures Set 1

Soil Temperatures Set 2

Soil Temperatures Set 3

Soil Temperature at -16cm

Solar Radiation from CNR1

Sherman Island Rain

Sherman Well Level

Box Temperatures

Can't check SI_mixed
2 SI_mixed graphs found

Theta Probes

Sherman Island Air Temperatures

4 SI_flx graphs found

Sonic Wind

CH4 Concentrations

Sample Counts

LI7500 CO2 and H2O

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

 
 

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This material is based upon work supported by the National Science Foundation and US Department of Energy. Any opinions, findings, conclusions, or recommendations expressed in the material are those of the author(s) and do not necessarily reflect the views of the supporters.