Field Notes

Mayberry: 2021-01-03 09:45:00 (DOY 3)
Author: Daphne Szutu
Others: Mike

Summary: Regular data collection/cleaning, added brushes back to fluorometer, cable gate fixed

2021-01-03
Mayberry

Mike and I arrived at 9:45 PST. It was calm, cool, and partly overcast. We could hear sounds of hunting nearby. The water was barely moving and the staff gauge read 33 cm. Itâ€™s been raining a bit in the past few weeks, but the roads were still fine. More rain is expected this coming week.

The cable gate has been fixedâ€”the center post now has a padlock threaded through the top, so someone can open the padlock to remove the center post and drive over the cable. It seemed like a good way to add a second lock to the gate and expand access without needing to make copies of the original padlock key.

I downloaded met, camera, USB GHG, and miniDOT data. I downloaded and cleared the FD chamber. I cleaned flux and rad sensors and swapped the miniDOT and water level sensor desiccants. The reservoir was 1/3 empty; I refilled it. I collected water samples for Isabel at 10:00 PST.

Looking at the data, the eosGP sensors seems to be kaput. I'll pull it next time if the data remain noisy.

The fluorometer data seemed ok (not noisy) in the last 3 weeks since I removed the brushes. I added the brushes back in, placing it between the lenses, and tightened the nut securely. The brushes returned to the same location after 1 cleaning cycle. The lenses were a little gunky, so I cleaned them with a rag.

LI-7500 readings:
CO2 417ppm
H2O 650ppm
T 14.3C
P 102.3kPa
SS 90-->98 after cleaning
LI7700 readings:
CH4 2.2ppm
RSSI 31--> 80 after cleaning

We left at 10:40 PST.

0 photos found

11 sets found

7 MB_flux graphs found