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Field Notes

<--2011-10-20 08:30:00 | 2011-11-02 07:00:00-->
Other sites visited today: Sherman Island | Mayberry

Twitchell Rice: 2011-10-27 08:15:00 (DOY 300)
Author: Joe Verfaillie
Others:

Summary: Swapped LGR, brought in SHF plates, tipping bucket for repair.

Twitchell
2011-10-27

I arrived about 8:15PST. It was cool and sunny with little to no wind. There was heavy dew on the grass. Field 1 has been harvested, but the test fields to the south have not. The straw has not been chopped yet, probably done by next week. I saw some cranes fly over.

When I arrived the LGR read:
8:13PST, 27.17C, 111.23Torr, 14.381usec, 10Hz, 2.489ppm

In slow flow mode there was zero flow. I checked the 2um filters. The interior filter seemed cleaner than the exterior one neither one was very plugged up. There was a little bit on condensation in the tube in a spot not covered by the insulation.

I swapped out the LGR. When I installed the other LGR, I used the interior filter from the one I removed as the exterior filter. All went well. Before I left the LGR read:
9:36PST, 20.92C, 148.05Torr, 14.754usec, 10Hz, 2.201ppm

I checked the wire for the tipping bucket and found it broken or cut at the base of the stake holding the bucket. I brought it in for repair.

I checked the wires on the SHF plates and found three of the four to be rotting away. I removed sn 00243, sn 00244 and sn 00246 from AM25T channels 17, 16 and 18 respectively.

I cut three plots of rice straw for biomass. I dug the roots out of one of the plots and brought those too.

I met some people from the Fresno Historical Society looking for someone to talk to some teachers about the history of water in the delta.

6 photos found

view of field site
20111027TW_Cranes.jpg ( 2011-10-27 09:30:55 ) Full size: 2048x1536
view of field site

view of field site
20111027TW_CranesZoom.jpg ( 2011-10-27 09:31:02 ) Full size: 2048x1536
view of field site

view of field site
20111027TW_Hawk.jpg ( 2011-10-27 09:04:46 ) Full size: 2048x1536
view of field site

view of field site
20111027TW_Site.jpg ( 2011-10-27 10:30:11 ) Full size: 2048x1536
view of field site

UC Davis on site.
TW_plantcam_20111028_1230.jpg ( 2011-10-28 12:30:00 ) Full size: 2560x1920
UC Davis on site.

Nice sunset.
TW_plantcam_20111028_1730.jpg ( 2011-10-28 17:30:00 ) Full size: 2560x1920
Nice sunset.

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.