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Field Notes

<--2015-04-23 13:00:00 | 2015-05-21 10:00:00-->
Other sites visited today: Sherman Island | Mayberry | Twitchell Rice | East End | West Pond

Twitchell Alfalfa: 2015-05-07 14:15:00 (DOY 127)
Author: Cove Sturtevant
Others: Sara

Summary: Data download, standard fieldwork.

Twitchell Alfalfa
2015-05-07

We arrived at about 14:15 PDT. Cloudy and cool. Downloaded data. Did soil respiration, veg height.

More critter activity around tower.

Tightened connections to soil thermocouples. Profile B 16 cm tc has been in and out.
Aired out 8cm soil CO2 probe in profile B, has been reading high. It seemed fine and clear of bugs.

7500 readings:
CO2 = 390 ppm
H2O = 460 mmol m-3
signal strength = 74.55% (76.9% after cleaning)
p = 100.6 kPa
t = 20 C
sos = 345.7 m s-1

Rad good. Cleaned sensors.
Met good.

Veg Height (cm): Tape measure from ground to top of plant
30, 14, 23, 26, 28, 29, 25, 17, 20, 24, 29, 14, 30, 38, 35, 19, 31, 15, 26, 32, avg = 25.3, stdev = 6.95

1 photos found

Cove and Sara
TA_autocam_20150507_1345.jpg ( 2015-05-07 13:45:01 ) Full size: 1920x1440
Cove and Sara

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.