Field Notes

Bouldin Corn: 2020-01-23 11:20:00 (DOY 23)
Author: Daphne Szutu
Others: Camilo, Nicole K.

Summary: Regular data collection/cleaning, downloaded FD chambers, PA sensor was disconnected--fixed, sonic had wrong serial setting--fixed, measured sonic orientation, measured water level

2020-01-23
Bouldin Corn

Camilo, Nicole, and I arrived at 11:20. It was an overcast and cool day with some fog on the road from Twitchell Island. The field has a few shallow puddles and is otherwise soft and muddy. The well water level was 1.28ft from the top of the pipe. I forgot to measure the height of the pipe.

Camilo cleaned flux and rad sensors. I downloaded met, camera, and USB GHG data.

I connected to the sonic serial connector to check its settings. I confirmed the voltage range was -5V to 5V. The DAC channel 4 was set to Sonic T and I changed it to SOS. All other settings seemed ok. I applied the changes. In the 7550 software, I re-entered the U/V/W/SOS coefficients in Site Setup>Sonic>Analog Settings. I reset the 7550 box and confirmed that the USB was logging and the 7700 was connected. I will need to back-calculate SOS from SonicT and re-upload GHG data since 2019-12-13.

The mini-USB cable was disconnected from the PA sensor when we arrived and the data card was empty. I plugged it back in and saw blinking blue lights inside the sensor.

I downloaded the 3 FD chambers. After the download, I cleared the data from the first chamber I connected to, but not to the other 2 chambers because it was taking too long to clear the data. The wash reservoir was 1/3 empty; we refilled it.

Camilo and Nicole measured the sonic orientation: on the compass it was 360 deg, on the phone compass it was 10-20 deg.

We left at 12:10 to pick up Ariane at WP.

0 photos found

6 sets found

17 BC_met graphs found