Field Notes

East End: 2021-12-14 14:45:00 (DOY 348)
Author: Daphne Szutu
Others: Carlos

Summary: Shadowband for dfPAR not working--removed, precip bucket disconnected--fixed, changed eddy clock +1min

2021-12-14
East End

Carlos and I arrived at 14:45 PST. It was cold with a cold breeze with some cumulus clouds. There was an atmospheric river in the past 48 hours that delivered about 50-75 mm (2-3 inches) of rain here. The staff gauge read 36cm.

Carlos cleaned flux and rad sensors and topped off the wash reservoir, which had been about 1/2 empty. I downloaded met, camera, and USB GHG data. There was no precipitation data from the past 2 weeks because one pin of the pluggable precip block had come loose. I removed the pluggable block and just wired the precip directly into the datalogger. I can bring a new pluggable block next time.

I changed the 7550 clock from 14:55 to 14:56 and reset the 7550. All seemed ok after the reset.

We had just reinstalled the dfPAR at the last visit after repairing the cables, but today the shadowband for the dfPAR was not turning. The motor was getting 12V but it wasn't turning, even after we tried to help start it by manually turning the shadowband. I removed the PAR sensor sn 040411 and motor and brought it back to the lab for repair.

LI-7500 readings:
CO2 417
H2O 377
T 14.4C
P 101.1kPa
SS 101 --> forgot to write after cleaning
LI7700 readings:
CH4 2.0
RSSI 36 --> 80 after cleaning

We left at 15:30 PST.

0 photos found

11 sets found

14 EE_met graphs found