Field Notes

<--2022-05-27 18:10:00 | 2022-06-09 14:00:00-->
Other sites visited today: Bouldin Corn | Hill Slough | Bouldin Alfalfa

Mayberry: 2022-06-08 10:45:00 (DOY 159)
Author: Daphne Szutu
Others: Carlos

Summary: Regular data collection/cleaning, install freshly calibrated 7700 after fuse repair, uploaded new picam code

2022-06-08
Mayberry

Carlos and I arrived at 10:45 PDT. It was warm and windy with some high thin clouds. The wetland plants and weeds are all tall, green and happy. The grass on the levee roads are starting to yellow. Bryan e-mailed earlier this week to say they will begin sheep grazing at Mayberry soon. Amy W from the Yolo Resource Conservation District (Yolo RCD) will contact us with further details. Carlos had a meeting from 11-11:40 that he dialed into.

The staff gauge read 69cm. I had to climb down onto the lower scaffolding to wipe the staff gauge with a green scrubby pad.

We installed LI-7700 sn TG1-0223. This sensor has a new fuse and fuse holder and was calibrated yesterday in the lab. After calibration, I flushed the headspace with zero air until optics RH=10% and put in fresh desiccant. Today the optics RH was 20%. Keep an eye on this.

I downloaded met, cam, USB GHG, and miniDOT data. I swapped desiccant for the water level and miniDOT sensors. I took off the miniDOT screen and wiped off the algae starting to grow and some small crustaceans wiggling around. I reattached the copper screen before putting the sensor back in the water.

Carlos cleaned rad and flux sensors. The sonic and IRGA had a lot of spiderwebs; one sonic traducer had a glob of spiderwebs. We topped off the wash reservoir.

I changed the eddy clock +30sec from ~10:07 to 10:07:30. I restarted logging and checked that the GHG columns looked ok after adding the 7700.

I downloaded the picam photos and cleared its memory. I then connected to the picam through WinSCP to upload Joe’s new picam code “20220530_fwb_awb_q12” that has improved fwb red/blue gains (R=1.8, B=1.8) and more efficient jpeg compression. I renamed the new code to “go-raspberry-pi-timelapse” and renamed the old code to “go-raspberry-pi-timelapse_fwb”. I changed the file permissions to add x for all (rwx r-x r-x) to match the old versions of the code and restarted the picam. The webpage loaded but it looked like an old version (no space for entering lat/long or checkbox for skipping nighttime photos). I’m not sure where it got this webpage…a cache? I went back into WinSCP and removed x from Group (rwx r-x r--). I restarted the picam and all seems to work now. Not sure why that would make a difference but I left it as is. I adjusted the picam FOV slightly to make the horizon level.

The 7500 read: 413ppm CO2, 630mmol/m3 H2O, 14.7C, 100.6kPa, 96SS – 101 after cleaning
The 7700 read: 1.94ppm CH4, 71RSSI – 78 after cleaning (RSSI was already high b/c this sensor just came from the lab)

We left at 11:45 PDT.

0 photos found

11 sets found

7 MB_flux graphs found