Field Notes

<--2013-04-05 09:30:00 | 2013-04-19 17:30:00-->
Other sites visited today: Mayberry | Twitchell Rice | West Pond | DWR Corn
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Sherman Island: 2013-04-11 09:00:00 (DOY 101)
Author: Joe Verfaillie
Others: Laurie

Summary: Power out in the morning, third ameriflux tower has been set up, standard field work

Shreman
2013-04-11

I arrived about 9am with Laurie. It was clear, mild and windy. The field is still damp with full ditches but not the standing puddle at midfield like last week. The weeds seem to have doubled in size. Maybe we should start LAI next time out.

The third Ameriflux tower has been set up between our tower and the Ameriflux tower along the west fence. They were running a generator near the gate in the east fence to power the other tower.

When we arrived the Line power was down. Laurie did the wells and moisture point. Then we decided to do the other sites and come back on the way home to see if the power gets restored. Laurie was able to talk to PG&E on the phone and report the outage.

We returned to Sherman at about 1:45pm. It was still breezy and warmer. The power was running again. I downloaded the data. The LGR was reporting:
12:54, 22.35C, 133.8Torr, 16.79usec, 10Hz, 1.894ppm

I adjusted the pressure to 142.5Torr. The LI7500 read:
15.58mmol/m3 CO2, 549mmol/m3 H2O, 101.28kPa, 25.11C, 248diag

We tried to do the soil chamber measurements with the 6400, but the screen was hard to read in the sun and we thought it was malfunctioning when it didnt start up immediately. Next time wait longer for it to initialize and try harder to read the screen. Laurie did the spectral measurements.

I left the panels off the AC breaker box. I think it will be okay as no rain is expected.

6 photos found

Greater white fronted geese in green field
20130411SI_Geese.jpg ( 2013-04-11 09:02:46 ) Full size: 1920x1440
Greater white fronted geese in green field

Geese flying over the rice field with windmills in the background
20130411SI_GeeseInFlight.jpg ( 2013-04-11 09:06:42 ) Full size: 1920x1440
Geese flying over the rice field with windmills in the background

Sherman PG&E meeter
20130411SI_PowerMeter.jpg ( 2013-04-11 09:24:10 ) Full size: 1920x1440
Sherman PG&E meeter

Testing AMP comparison towers at Sherman
20130411SI_ThirdTower1.jpg ( 2013-04-11 09:42:46 ) Full size: 1920x1440
Testing AMP comparison towers at Sherman

Testing AMP comparison towers at Sherman
20130411SI_ThirdTower2.jpg ( 2013-04-11 09:43:03 ) Full size: 1920x1440
Testing AMP comparison towers at Sherman

Moon at sunset
SI_autocam_20130411_1915.jpg ( 2013-04-11 19:15:03 ) Full size: 1920x1440
Moon at sunset

Graphs display:
7 sets found

No data found for SI_mp.
11 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:LED NDVI Sensor Output 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

3 SI_soilco2 graphs found

Explore the graph:Sherman Island Vaisala Soil CO2 in a new window

Explore the graph:Soil CO2 Temperatures in a new window

Explore the graph:Soil CO2 Reference Soil Temperatures in a new window

Can't check TWSI_mixed
Can't check SIMBTWEE_met