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Field Notes

<--2017-03-08 09:15:00 | 2017-03-29 11:20:00-->
Other sites visited today: Bouldin Alfalfa | East End | Mayberry | Sherman Wetland | Twitchell Rice | West Pond

Twitchell Alfalfa: 2017-03-15 13:25:00 (DOY 74)
Author: Daphne Szutu
Others: Elke Eichelmann, Kyle Hemes

Summary: Regular data collection/cleaning

2017-03-15
Twitchell Alfalfa

We arrived at 13:25. it was overcast, warm, with a light wind. The alfalfa is just starting to come back. There was sheep to the west of the tower.

Kyle took soil respiration measurements.

We cleaned EC and rad sensors and collect met and USB GHG data and swapped the camera card.

Elk took veg height measurements.

LI7500 readings:
CO2 401.9 umol/mol
H2O 582.9 mmol/m3
T 20.2 Celsius
P 102.0 kPa
SS 91.4 -> 91.9 after cleaning

The bird spike on 7500 is half broken.

We left at 13:55.

Veg Height (cm): Tape measure from ground to top of plant
15, 14, 8, 10, 5, 11.5, 6, 9.5, 7, 22, 21, 6, 16, 6, 10, 9.5, 10, 8, 5.5, 11.5, avg = 10.6, stdev = 4.87

0 photos found

Graphs display:
7 sets found

Can't check TA_met
11 TA_met graphs found

Alfalfa Temperatures

Alfalfa Soil Heat Flux

Alfalfa Soil Moisture

Alfalfa Soil Temperatures Set A

Alfalfa Soil Temperatures Set B

Alfalfa Soil Temperatures Set C

NDVI Narrow Band Radiation

Soil CO2 Flux

Relative Humidity and BattV

SRS NDVI and PRI

PRI Narrow Band Channels

Can't check TA_rad
3 TA_rad graphs found

Alfalfa Radiation

Alfalfa LED NDVI Sensor

Alfalfa PAR

Can't check TA_flux
5 TA_flux graphs found

Alfalfa Sonic Wind

Alfalfa CO2 and H2O

Alfalfa Methane

Alfalfa Pressure

Alfalfa Flux Data Counts

Can't check TA_soilco2
7 TA_soilco2 graphs found

Set A Soil CO2

Set B Soil CO2

Soil CO2 Soil Moisture

Forced Diffusion CO2

Alfalfa Forerunner Soil CO2

Alfalfa Forerunner Temperatures

Alfalfa Forerunner Probe RH

No data found for TA_arable.
1 TA_cam graphs found

GCC

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.