Field Notes

<--2021-09-03 11:00:00 | 2021-09-23 09:30:00-->
Other sites visited today: Mayberry | Bouldin Corn | Gilbert Tract
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Bouldin Alfalfa: 2021-09-15 13:30:00 (DOY 258)
Author: Daphne Szutu
Others: Joe

Summary: Alfafa ready to mow, Hazy skies, Downloaded data, Swapped 7500 for calibration, Changed eddy clock +1min

2021-09-15
Bouldin Alfalfa

Joe and I arrived at 13:30 PDT. It was warm with a slight breeze and hazy, with Mt. Diablo barely visible. The alfalfa is shin/knee height and ready to be mowed. Alfalfa fields north of us have been mowed, so we should get ready to trim alfalfa under the tower at our next visit.

Joe changed the batteries on the 2 Arable game cams.

Joe downloaded the bouncer tower data and I downloaded the flux, met, and camera data at the main tower. The CF card worked fine and the 10sec data seems complete. Iâ€™m not sure why the other card froze up last time.

I swapped the 7500A for calibration: sn 75H-2176 came down and sn 0035 went up. I uploaded a new configuration file and updated the pressure coefficients. I changed the eddy clock +1min from 12:54 to 12:55 to match with the laptop time. I reset the 7550 box and all seemed well.

LI-7500 readings (sn 75H-2176 --> sn 0035):
CO2 393ppm --> 405
H2O 820ppm --> 730
T 27.4C --> 27.2
P 101.0kPa --> 101.0
SS 97--> 100 after cleaning
LI7700 readings:
CH4 1.95
RSSI 59

We left at 14:15 PDT.

Next Mowing: 2021-10-13

0 photos found

7 sets found

5 BA_flux graphs found