Field Notes

<--2021-07-06 11:45:00 | 2021-08-04 15:55:00-->
Other sites visited today: Sherman Wetland | West Pond | East End
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Mayberry: 2021-07-21 09:20:00 (DOY 202)
Author: Daphne Szutu
Others: Robert

Summary: Regular data collection/cleaning, re-routing foot path to behind solar panels, wasp nest in empty battery box, swapped FD chamber, FD chamber performance check on fresh chamber

2021-07-21
Mayberry

Robert and I arrived at 9:20 PDT. It was a mild, hazy day with a slight breeze. The wetland is looking tall and greenâ€”a clump of cattails by the boardwalk looked 2.5-3m tall. The staff gauge read 66cm and could use some scrubbing.

There are now 4 big holes in the dirt path leading to the boardwalk from where weâ€™ve stepped through into a tunnel below. I put some white conduit or wooden posts in each hole so we donâ€™t step on the holes again. On second thought, I decided we should probably just re-route our walking path to behind the solar panels instead of in front of the panels. I moved an aluminum ladder that was behind the solar panels to the front of the solar panels. I had to move 2 battery boxes out of the way to lay the ladder outside. The first battery box was upside down and I lifted gingerly, in case there was anything inside the box. There was nothing, so the second battery box I just picked up casually and there was a large, active wasps nest inside. In a panic, I threw the box away from me and into a clump of reeds. We can recover the battery box another time as itâ€™s well supported by the plants and <1m away from the shorelineâ€”I donâ€™t think itâ€™s going anywhere unless a large animal knocks it down into the water.

I downloaded met, cam, and USB GHG data. I also downloaded the picam and Stardot camera photos for the camera intercomparison we have running here. The picam clock is 1 minute fast, but the putty connection was refused, so maybe ssh is not enabled.

The 7700 optics RH is 27%, so the drierite needs to be swapped at the next calibration.

I downloaded the FD data and cleared its data. The data still look bad because the data is mostly 0.0. We swapped in a spare FD chamber: sn FD20190027 came off and sn FD20180047 went on. While the chamber was up in the air, I ran an FD performance check via the eosLink software. Soil CO2 read 460.3ppm and ambient read 464.6ppm. We reset it from 465 to 400ppm. Robert put the long black collar onto the new
chamber before lowering the boom and sensors down.

We topped off the wash reservoir. Robert cleaned the flux and rad sensors. I checked the charge controller enclosureâ€”no live insects but a lot of ant carcasses in the charge controller display window. Robert trimmed some of the reeds by the boardwalk. I cleaned the solar panels.

LI-7500 readings:
CO2 400ppm
H2O 686ppm
T 22.7C
P 101.0kPa
SS 98-->99 after cleaning
LI7700 readings:
CH4 2.0ppm
RSSI 49-->79 after cleaning

We left at 10:35 PDT.

0 photos found

11 sets found

7 MB_flux graphs found