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Field Notes

<--2013-08-28 08:40:00 | 2013-09-11 11:40:00-->
Other sites visited today: Sherman Island | Mayberry | DWR Corn | Twitchell Alfalfa | West Pond

Twitchell Rice: 2013-09-05 12:00:00 (DOY 248)
Author: Cove Sturtevant
Others: Joe, Laurie

Summary: Field continues to dry. Rice droopy with seed. Standard fieldwork. Pulled DO probe.

Twitchell Rice
2013-09-05

We arrived about 12:00 PDT. It was sunny and warm (25 C) with a nice breeze. The soil was still moist but not mucky at all and drier than last week. The rice is droopy with seed, about 75 cm high above the soil. Joe and I attended to the tower while Laurie did spectral. Joe pulled the DO probe (#6), since the field will be drained for the remainder of the season.

7500 readings:
CO2 = 392 ppm (same after cleaning)
H2O = 615 mmol m-3 (same after cleaning)
signal strength = 86.1% (86.4% after cleaning)
t = 25.4 C
p = 102.0 kPa
sos = 348.2 m s-1

7700 readings:
CH4 = 1.9 ppm variable +-0.05 (1.9 and stable after cleaning)
RSSI = 35 variable +- 1 (73 and stable after cleaning)
Reservoir was full.
There was some spider web filaments in the path.

MET data looked good.

2 photos found

Black bird swarm
TW_autocam_20130906_1345.jpg ( 2013-09-06 13:45:03 ) Full size: 1920x1440
Black bird swarm

Black bird swarm
TW_autocam_20130906_0915.jpg ( 2013-09-06 09:15:02 ) Full size: 1920x1440
Black bird swarm

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.