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
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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

Explore the graph:Alfalfa Temperatures in a new window

Explore the graph:Alfalfa Soil Heat Flux in a new window

Explore the graph:Alfalfa Soil Moisture in a new window

Explore the graph:Alfalfa Soil Temperatures Set A in a new window

Explore the graph:Alfalfa Soil Temperatures Set B in a new window

Explore the graph:Alfalfa Soil Temperatures Set C in a new window

Explore the graph:NDVI Narrow Band Radiation in a new window

Explore the graph:Soil CO2 Flux in a new window

Explore the graph:Relative Humidity and BattV in a new window

Explore the graph:SRS NDVI and PRI in a new window

Explore the graph:PRI Narrow Band Channels in a new window

Can't check TA_rad
3 TA_rad graphs found

Explore the graph:Alfalfa Radiation in a new window

Explore the graph:Alfalfa LED NDVI Sensor in a new window

Explore the graph:Alfalfa PAR in a new window

Can't check TA_flux
5 TA_flux graphs found

Explore the graph:Alfalfa Sonic Wind in a new window

Explore the graph:Alfalfa CO2 and H2O in a new window

Explore the graph:Alfalfa Methane in a new window

Explore the graph:Alfalfa Pressure in a new window

Explore the graph:Alfalfa Flux Data Counts in a new window

Can't check TA_soilco2
7 TA_soilco2 graphs found

Explore the graph:Set A Soil CO2 in a new window

Explore the graph:Set B Soil CO2 in a new window

Explore the graph:Soil CO2 Soil Moisture in a new window

Explore the graph:Forced Diffusion CO2 in a new window

Explore the graph:Alfalfa Forerunner Soil CO2 in a new window

Explore the graph:Alfalfa Forerunner Temperatures in a new window

Explore the graph:Alfalfa Forerunner Probe RH in a new window

No data found for TA_arable.
1 TA_cam graphs found

Explore the graph:GCC in a new window

Can't check TATWBABCSB_cam