Field Notes

Bouldin Corn: 2024-03-25 13:20:00 (DOY 85)
Author: Daphne Szutu
Others: Dennis, Izzie

Summary: Swapped 7500 for calibration, small data gaps in some SDI-12 sensors, happy weeds around tower

2024-03-25
Bouldin Corn

Dennis, Izzie, and I arrived at 13:20 PST (14:20 PDT). Izzie is an Environmental Sciences senior using Delta data in PEPRMT for her thesis. It was cool and partly sunny. The field has been drained and there are weeds coming up in the higher areas of the field. Lots of weeds around the tower and on the slope down to the tower. I also found a post mount piece on the ground that we dropped last time.

I downloaded met, cam, USB GHG, and PA data. Dennis cleaned flux and rad sensors and swapped the 7500 for calibration: sn 0065 came off and sn 75H-2180 went on. I uploaded a new config file and updated the pressure coefficients. There were some gaps in some of the SDI-12 sensors (VWC, PRI) so I power-cycled them and checked the wiring, but all seemed fine. These values are not changing quickly, so it wouldn't be hard to gap-fill them, just annoying there are gaps.

0065 read: 423ppm CO2, 445mmol/m3 H2O, 17.4C, 101.5kPa, 103SS
0042 read: 425ppm CO2, 412mmol/m3 H2O, 18.6C, 101.5kPa, 100SS
The 7700 read: 1.99ppm CH4, 60RSSI – 76 after cleaning

Dennis and Izzie dug up some peat in the field to look at how it differed from the peat they dug up at East End. It looked pretty similar to me, just drier. Dennis called it "degraded peat."

We left at 13:40 PST (14:40 PDT) and entered the highway using our usual exit ramp instead of the usually wet/terrible onramp.

0 photos found

6 sets found

17 BC_met graphs found