Field Notes

Bouldin Corn: 2022-11-18 13:35:00 (DOY 322)
Author: Daphne Szutu
Others: Ari

Summary: Regular data collection/cleaning, field has been disked but more tractor work expected, swapped out prototype Mark 3 for production Mark 3, windy

2022-11-18
Bouldin Corn

Ari and I arrived at 13:35 PST. There was a strong wind from the north and it was sunny and cool. Our field has been tilled/disked but there is still a lot of organic matter on the surface compared to neighboring fields. Neighboring fields have mostly bare soil at the surface. There may be more tractor work to come here. Many strings of birds flying overhead.

I downloaded met, cam, USB GHG, FD, PA, and IRT data. There were about four days Nov. 6-10 where FD flux was 0, but it seems ok now. I changed the eddy clock +45sec around 13:57 PST and restarted logging. I changed the water level desiccant. Ari cleaned flux and rad sensors. The reservoir was 90% full; we refilled it.

Ari swapped out the prototype Mark 3 for a production Mark 3 sn B301069. We turned on the sensor by pressing the power button for 2sec and saw the various status lights blink. It’s in the same orientation as before, where the solar panel faces east and the sensors face west toward the field.

The 7500 read: 418ppm CO2, 260mmol/m3 H2O, 19.8C, 101.6kPa, 99SS -- 100 after cleaning
The 7700 read: 2.0ppm CH4, 55RSSI – 75 after cleaning

We left at 14:05 PST.

2 photos found

bouldincorn_2022_11_17_064506.jpg ( 2022-11-17 06:46:42 ) Full size: 1296x960
Pretty sunrise with tule fog