Field Notes

Mayberry: 2023-01-03 12:00:00 (DOY 3)
Author: Daphne Szutu
Others: Joe

Summary: Storm prep, power down--temporarily fixed break in main power line, eddy system clock reset to 1969--fixed, picam wifi down--removed

2023-01-03
Mayberry

Joe and I arrived around 12:00 PST. It was cold and overcast and relatively still. We’ve had two big storms in the last week (Dec 26-27 and Dec 31), and another big one coming tomorrow (an "atmospheric river bomb cyclone”). More storms forecast for this weekend and next week, too. Today’s visit was to batten down the hatches before tomorrow’s storm.

The water was brown and the staff gauge read 47cm. The wind had pushed the floating boom to point west; Joe moved it back to face north.

There was a break in the main power line from the charge controller to the tower and power has been off since Dec 31. A bit of the power line was exposed between two pieces of conduit and it corroded in the recent rains. I turned the charge controller off and Joe fixed the break temporarily with a screw terminal; he wrapped the whole thing in electrical tape to protect it from the rain. From the charge controller box I scraped out all of the dead wasps and one large spider fumigated by the moth balls and plugged all the holes with putty.

After Joe restored the power, I downloaded all the usual data: met, cam, USB GHG, and miniDOT. GHG data stopped on 2022-12-25 and met data stopped on 2022-12-31.

The eddy clock also needed resetting. When the clock read 1969-12-31 16:13:40, I reset it to 2023-01-03 12:32:50. I reset the box but only the correct date had stuck (the time was still incorrect). I set the date and reset the box again, and this time both date and time were correct. I checked that the 7700 was connected in the software, USB was logging, and the GHG columns looked ok.

The picam has power but its wifi network wasn’t showing up. The intermittent power may have messed it up. We brought picam sn RPI0W-003 back to the lab for testing.

Joe cleaned the flux and rad sensors. He reported water pooled on the LWin sensor and the gas analyzers. The initial GHG numbers were all funky because of low signal strength. Since the power has been off for a few days, the 7700 hasn’t done its usual spinning. The wash reservoir was full.

Joe tightened the guywires but they were pretty good already. We removed the upper boardwalk.

The 7500 read: -320ppm CO2, 13095mmol/m3 H2O, 7.2C, 101.1kPa, 1SS
7500 clean read: 418ppm CO2, 425mmol/m3 H2O, 7.3C, 101.1kPa, 101.1SS
The 7700 read: 1.59ppm CH4, 0RSSI
7700 clean read: 2.1ppm CH4, 85RSSI

We left at 13:00 PST. We plan to come back Friday to check on things again.

0 photos found

11 sets found

7 MB_flux graphs found