Field Notes

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Other sites visited today: Gilbert Tract | Mayberry | Bouldin Alfalfa | East End
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Bouldin Corn: 2024-10-23 13:00:00 (DOY 297)
Author: Daphne Szutu
Others: Kuno

Summary: Sorghum has been harvested, swapped 7500 for calibration

2024-10-23
Bouldin Corn

Kuno and I arrived at 13:00 PST. It was sunny and mild with a breeze; we could see numerous dust devils while driving around. The sorghum has been harvested. There’s stover remaining in the majority of the field and the sides of the field is covered with flattened litter, like someone drove over it. Most of Charlotte’s chamber seem to be in the flattened area.

I downloaded met, cam, USB GHG, and PA data. The wash reservoir was 1/3 empty; Kuno refilled it. I swapped the lithium power pack: 2/4 LEDs on the old pack and 4/4 LEDs on the new pack.

Kuno cleaned flux and rad sensors and we swapped the 7500 for calibration: sn 0035 came off and sn 0041 went on. I uploaded a new config file, updated the pressure coefficients, and reset the box. All looked ok.

old 0035 read: 394pm CO2, 707mmol/m3 H2O, 28.2C, 101.8kPa, 86SS – high CO2 and low SS
clean 0035 read: 432pm CO2, 430mmol/m3 H2O, 28.2C, 101.8kPa, 98SS
fresh 0041 read: 434ppm CO2, 411mmol/m3 H2O, 27.8C, 101.9kPa, 97.5SS
7700 read: 2.0ppm CH4, 35RSSI – 79 after cleaning

We left at 13:25 PST.

2 photos found

20241023BC_FlatStover.jpg ( 2024-10-23 14:23:00 ) Full size: 1920x1440
Stover around edges of field were flattened. Charlotte's chambers mostly installed in the flattened area.