Field Notes

<--2014-04-03 13:40:00 | 2014-04-17 15:00:00-->
Other sites visited today: Sherman Island | Mayberry | Twitchell Rice | East End | West Pond
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Twitchell Alfalfa: 2014-04-10 13:30:00 (DOY 100)
Author: Cove Sturtevant
Others: Joe, Sara

Summary: Standard fieldwork. Weird mux problem with heat flux plates. Moved GHF plates to CR1000, good readings. All good.

Twitchell Alfalfa
2014-04-10

We arrived about 13:30 PDT. It was sunny and warm with a mild breeze. Alfalfa growing steadily.

Sara did spectral measurements and a veg height survey while Joe and I downloaded data and did some troubleshooting of the heat flux plates. Seems the multiplexor channels went dead for some reason. We dug up SHF1 and it worked fine, and the voltage was even fine at the mux channels, but no readings were getting through to the CR1000 (but all other sensors on the mux were reading fine). Joe moved the GHF plates over to the CR1000 Diff channels 5-7 and adjusted the program. Readings were fine when we left.

7500 readings:
CO2 = 391 ppm
H2O = 603 mmol m-3
SS = 92.69%
I cleaned the sensor but forgot to check the readings after.

Cleaned radiation sensors.
Met ok. Rad ok.

0 photos found

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