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Field Notes

<--2017-06-05 09:15:00 | 2017-07-12 11:00:00-->
Other sites visited today: East End | Mayberry | Twitchell Alfalfa | West Pond | Sherman Wetland | Bouldin Alfalfa

Bouldin Corn: 2017-06-23 12:00:00 (DOY 174)
Author: Ada Chang
Others: Daphne Szutu, Elke Eichelmann

Summary: Took vegetation height and biomass samples. Problems with NR1 PRT temperature.

Arrived at 12:00. The weather was sunny, clear and windy.

Collected USB CAM MET. Looked at 7700 pressure.
Cleaned radiation and eddy sensors.

Measured tower height from the ground. 5.11 m from the middle of the 7700. 4.88 m from the bottom of the 7700.

Ch4 1.20 to 2.9
Rssi 1.1 to 77.3
Ch4 press = 41

CO2 398.11 to 405.6
H2o 635.9 to 575.0
T 31.04
P 101.1
Ss 83.0 to 86.1

NR01 PRT started nan June 19 1:30
Changed excitation from vx2 to vx3 and updated program but still nan
Maybe resistors? In program, Daphne switched channels of AMS25T and NR01PRT.

Took vegetation height and biomass samples.

Vegetation Height (cm)
Walking out: 45, 40, 35, 22, 17, 13, 25, 35, 28, 31
Walking back: 37, 26, 32, 29, 28, 36, 24, 38, 40, 23

Biomass Samples (counted plants within 1m of a row, took samples from the first 50cm for every second site)

Site 1: 9 plants—no sample
Site 2: 6 plants—3 plants (I)
Site 3: 8 plants—no sample
Site 4: 9 plants—5 plants (II)
Site 5: 8 plants—no sample
Site 6: 7 plants—4 plants (III)
Site 7: 8 plants—no sample
Site 8: 8 plants—4 plants (IV)
Site 9: 8 plants—no sample
Site 10: 8 plants—4 plants (V)

Need to find out row spacing!

Veg Height (cm): Tape measure from ground to top of plant
45, 40, 35, 22, 17, 13, 25, 35, 28, 31, 37, 26, 32, 29, 28, 23, 21, 28, 20, 25, avg = 28, stdev = 7.88

0 photos found

Graphs display:
6 sets found

17 BC_met graphs found

Battery Voltage

Soil Heat Flux

Temperature

Solar Radiation

Air Pressure and RH

Soil Moisture

Bouldin Corn PAR

NDVI channels

PRI Channels

Soil Temperatures Set A

Soil Temperatures Set B

Soil Temperatures Set C

SRS NDVI and PRI

Surface Temperature

Forced Diffusion CO2

Forced Diffusion Soil CO2 Flux

Surface Temperature

5 BC_flux graphs found

LI-7500 CO2 and H2O

7700 CH4 and RSSI

Wind

Counts

CO2 in ppm

Can't check TATWBABCSB_cam
Can't check MBSWEEWPBCBA
No data found for BC_pa.
No data found for BC_arable.

 
 

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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.