Field Notes

Bouldin Alfalfa: 2019-02-28 16:25:00 (DOY 59)
Author: Daphne Szutu
Others: Camilo, Robert

Summary: Regular data collection/cleaning, veg height, leveled flux sensors, reference GCC photo

2019-02-28
Bouldin Alfalfa

We arrived at 16:25 and parked on the levee south of our field to avoid the muddy dirt roads in the fields. It was mostly cloudy and cooling down. We turned around on a wider part of the gravel road, but looking at the map now there was a turnaround 1 mile down the road that we can use next time. There were sheep grazing the levee to the SW of the tower. There was one dead sheep just outside of the sheep fence. The alfalfa is still quite short.

I collected met, camera, USB GHG, and FD data. After confirming the FD data was downloaded, I cleared the memory and synced the FD time with laptop time (it was a few minutes off). Robert cleaned flux and rad sensors. Camilo took veg height measurements. We did not take spectral measurements because we forgot the measurement tube. The wash reservoir was 1/3 full; we refilled it. Robert took a reference GCC picture with the lab camera from the upper boardwalk.

Robert noticed the flux sensors were not level so we raised the NW scaffold foot a bit, and we should double check it next time. I'm not sure when we last checked the level.

LI-7500 readings:
CO2 412ppm
H2O 400ppm
T 17.0C
P 101.9kPa
SS 98--> 99 after cleaning

LI7700 readings:
CH4 1.97ppm
RSSI 53--> 80 after cleaning

We left at 17:00.

Next Mowing: 2019-04-29

Veg Height (cm): Tape measure from ground to top of plant - Measured by CRS
13.5, 15, 10, 9, 15, 16, 8, 14, 18, 20, 14, 13, 11, 18, 13, 14, 9, 5, 12, 13, avg = 13, stdev = 3.66

0 photos found

7 sets found

5 BA_flux graphs found