Field Notes

<--2021-08-17 14:30:00 | 2021-09-15 10:10:00-->
Other sites visited today: Sherman Wetland | Gilbert Tract
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Mayberry: 2021-09-02 09:50:00 (DOY 245)
Author: Daphne Szutu
Others: Robert

Summary: Regular data collection/cleaning, turned cal kit PAR upside down, precip bucket cable pulled out from datalogger--fixed, dropped level in water, 7700 optics RH high--needs new drierite, deployed barnacle-free miniDOT

2021-09-02
Mayberry

Robert and I arrived at 9:50 PDT. Joe and Dennis were at Sherman Wetland starting to decommission the tower. It was a mild and still day with hazy skies. The staff gauge read 58cm.
There was fresh otter poop on the boardwalk and the precip cable had been pulled out from the datalogger, probably from the otters moving around. I rewired it into the datalogger and I could probably cable tie the wire to the scaffolding next time to prevent it from happening again.

I downloaded met, camera, Stardot, and USB GHG data. There were only photos until 8/24 on the Stardot card. I also downloaded the cal kit data and Robert clipped the cal PAR upside down so it measures reflected PAR. Robert reported that the rad boom needs to be re-leveled.

The 7700 optics RH was at 36% and there was a warning in the 7700 software window in red text instructing us to replace the desiccant. I removed the desiccant bottle and swapped out the purple drierite for blue silica gel desiccant for now, and next time Iâ€™ll bring another chemical bottle with fresh drierite.

The miniDOT sn 1221 has a lot of barnacles. We removed it and replaced it with sn 899502 using the batteries from sn 1221 and fresh desiccant. The batteries were replaced in the past month so they should be good for another year or so.

LI-7500 readings:
CO2 397ppm
H2O 640ppm
T 19.9C
P 101.1kPa
SS 97-->99 after cleaning
LI7700 readings:
CH4 2.02ppm
RSSI 43--> 80 after cleaning

We dropped the level in the water when we were trying to level the cal PAR sensor on the folded-in rad boom. Robert spent 10 minutes perched on the lowest dry rung of the scaffolding and sweeping his arm around the water, but we couldnâ€™t find it. He said the soil surface was appreciably warmer than the water column.

We left around 11:00 PDT to join Joe and Dennis at SW.

0 photos found

11 sets found

7 MB_flux graphs found