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Field Notes

<--2009-11-06 11:00:00 | 2009-12-01 09:30:00-->
Other sites visited today: Sherman Island

Twitchell Rice: 2009-11-19 10:30:00 (DOY 323)
Author: Joe Verfaillie
Others: Cove

Summary: Setup generator, Fields beginning to flood, LGR analyzer very cold when starting, Reset laptop password.

Twitchell
11/19/2009

Arrived about 10:30am with Cove to setup the generator. Clear, cool, very light wind from the southwest. Late in the day very light wind from the north.

Fields are beginning to flood. North part of our field is wet but the water has not percolated to the south end yet. Immediately next to our tower is still dry, but there is some water visible further out and slightly to the north.

When we arrived the Campbell enclosure on the tower was wide open and there was evidence or rain from Tuesday on the equipment, but everything appeared to be in working order.

The laptop seems to be off, with lid closed. Because of this no web cam photos were collected.

Generator was set up along the road to the north of the tower. The power strip could not support the scroll pump so we had to run with the smaller diaphragm pump.

When the LGR analyzer started up it was very cold (~4C). The water channel did not read initially and the other channels read high. Readings seem to begin to settle into more reasonable values as the analyzer warmed up. Adjusted bypass valve to bring pressure into good range.

Returned about 2pm. LGR stats:
13:13, 1.930ppm, 6835.94ppm, 393.55ppm, 18.81C, 141.58Torr, 17.493usec, 10Hz

I reset the laptop password to “pippo” and setup daily MD9 renaming of the CR1000 and CR23X files. I copied all data and images from the laptop and swapped cards on the CR1000.

Separation between our tower and Franks tower at their original locations on the berm was 12.2 meters.

7 photos found

view of field site
20091119TW_BermWaterMtDiablo.jpg ( 2009-11-19 15:10:29 ) Full size: 2048x1536
view of field site

view of field site
20091119TW_EndBermWater.jpg ( 2009-11-19 15:10:18 ) Full size: 2048x1536
view of field site

view of field site
20091119TW_FieldWaterNearTower.jpg ( 2009-11-19 15:04:28 ) Full size: 2048x1536
view of field site

view of field site
20091119TW_OldFTowerLocWater.jpg ( 2009-11-19 15:10:11 ) Full size: 2048x1536
view of field site

view of field site
20091119TW_SoilSensors1.jpg ( 2009-11-19 15:04:52 ) Full size: 2048x1536
view of field site

view of field site
20091119TW_SoilSensors2.jpg ( 2009-11-19 15:04:58 ) Full size: 2048x1536
view of field site

view of field site
20091119TW_Tower.jpg ( 2009-11-19 15:05:22 ) Full size: 2048x1536
view of field site

Graphs display:
6 sets found

12 TW_met graphs found

Soil Heat Flux

Solar Radiation

Air Temperature

Soil Temperature Set 1

Soil Temperature Set 2

Soil Temperature Set 3

Water Temperature

RH and Pressure

Soil Moisture

Rain and Water Level

Disolved Oxygen

LED NDVI Channels

5 TW_flux graphs found

Sonic Anemometer Winds

LI7700 CH4 and RSSI

Twitchell CH4

LI7500 CO2 and H2O

Twitchel Rice Flux Counts

Can't check TWSI_mixed
Can't check SIMBTWEE_met
1 TW_cam graphs found

TW Rice Autocam

Can't check TATWBABCSB_cam

 
 

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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.