Field Notes

Mayberry: 2021-07-06 11:45:00 (DOY 187)
Author: Daphne Szutu
Others: Carlos

Summary: Regular data collection/cleaning, sonic cable disconnected--fixed, changed eddy clock +2min, reinstalled precip bucket, FD data mostly 0

2021-07-06
Mayberry

Carlos and I arrived at 11:45 PDT. It was clear, breezy, and warm. The staff gauge read 87cm. I put my foot through the ground in front of the solar panels--we stuck a white conduit pipe in the hole for now to mark it.

I downloaded met, cam, USB GHG, and miniDOT data. I also downloaded the picam and Stardot camera photos for the camera intercomparison we have running here. I changed the desiccant for the miniDOT and water level sensors. We topped off the wash reservoir. Carlos cleaned the flux and rad sensors. The Rnet sensor over the water was very dirty.

The sonic cable was disconnected at the 7550 box. I probably didnâ€™t tighten it properly last time on 6/16 when I was testing the sonic, so I made sure to tighten it properly this time. Looking at the data back in the lab, the sonic data stopped on 2021-06-28.

I checked the eddy clock and changed it from 11:14 to 11:16 to match the laptop time. I restarted the 7550 box and checked that the clock was still good.

We installed the precip bucket sn 40415-1006 again after I replaced the cable in the lab. It was taking a while to push the cable through the white conduit, but we threaded the fleshy end of a tule reed from the end of the conduit and twisted the reed to catch onto the bare leads to pull the cable through.

LI-7500 readings:
CO2 400ppm
H2O 720ppm
T 23.1C
P 101.2kPa
SS 99-->100 after cleaning
LI7700 readings:
CH4 1.94ppm
RSSI 55--> 80+ after cleaning

We left around 13:00 PDT.

Looking at the data back in the lab, there is something wrong with the FD data. Starting 2021-06-23 9:20, the data is mostly zeros. I've deleted the bad data from the database and will check out the chamber at the next site visit.

0 photos found

11 sets found

7 MB_flux graphs found