Field Notes

<--2022-06-08 18:15:00 | 2022-07-13 09:45:00-->
Other sites visited today: Bouldin Corn | Bouldin Alfalfa

Hill Slough: 2022-06-28 07:20:00 (DOY 179)
Author: Carlos Wang
Others:

Summary: Regular data collection/cleaning, losing power overnight

I arrived at the site around 07:20 PDT. It was quite windy, but getting sunny with the dissipating haze. There was more water at the site with staff gauge reading at 4.20 FT at around 08:09 PDT. The gauge was difficult to read for me, so I used my phone to get a picture.

The LiCOR water tank was about 1/8 empty and I topped the container up.

I downloaded the MET data and checked that the data look good. There was around 6sec time difference, and I synced the logger time to the laptop time.

Then I downloaded the USB GHG data and checked the ambient conditions:
- The 7500 read: 403.6ppm CO2, 619.5mmol/m3 H2O, 17.8C, 101.8kPa
- The 7700 read: 1.95ppm CH4

The RSSI was ~42.5 and SS was ~96.5. I went up to clean the MET and flux sensors. The pyranometer had some film. After cleaning the RSSI was ~71.8 and SS was ~98.8.

I also downloaded the raspberry picam data, which took a while. The internet kept cutting off, but the .zip file downloaded no problem. After inspecting that all copies were inside of the .zip folder, I then deleted the existing photos.

Note from Daphne: Looking at the data back in the lab, the tower is losing power overnight, which is weird b/c the days are long and sunny. We've lost about 10 nights of data in the past two weeks. The power lines and connections need a thorough inspection. Maybe test the batteries, too.

2 photos found

20220628HS_StaffGauge.jpg ( 2022-06-28 08:09:04 ) Full size: 1440x1920
Sometimes it's easier to read the staff gauge by taking a photo and then zooming in