Field Notes

Mayberry: 2025-01-02 15:40:00 (DOY 2)
Author: Daphne Szutu
Others: Joe

Summary: End-of-year data collection, floating boom bucket needs replacement, trimmed cattails under floating boom, a few days of missing data from dark/rainy days

2025-01-02
Mayberry

Joe and I arrived at 15:40 PST. Happy new year! It was a mild winter day, cool, breezy, and sunny with high thin clouds. The staff gauge read 61cm. There ware some last vestiges of light green parts among the cattail, but the wetland is otherwise mostly brown. The precip bucket funnel looked clear.

The reservoir was 1/2 full, Joe refilled it. He cleaned flux and rad sensors; there was bird poop on both the lower 7700 mirror and the lower 7500 window.

He lifted up the floating boom and noticed that there was some water in the bucket from a crack in the lid. The whole bucket is brittle and should be replaced (or we should think of another place to install the water sensors). Joe got in the water and cut back the cattails underneath the floating boom. A temporary solution until new growth this spring.

I downloaded met, cam, and USB GHG data. We are missing about a day of data from the dark and dreary weather on Christmas Eve. I downloaded the miniDOT data and swapped its desiccant. I dropped the empty USB stick in the water and one of the small screwdrivers with the convertible flathead/phillip tips. I added a desiccant tube for the Campbell water level sensor to replace the one I dropped in the water a few months ago.

I measured the surface water conductivity.
Surface, 1746uS, 11.7C

7500 read: 432pm CO2, 340mmol/m3 H2O, 15.3C, 101.2kPa, 88SS—100 after cleaning
7700 clean read: 2.05ppm CH4, 35RSSI — 72 after cleaning

Maintenance to-do:
- 2 full-size scaffolding layers here that are partly rotted. Cut up and recycle?
- Improve mounting for smaller solar panel set (back legs loose on ground, one front corner secured with zip tie)
- Replace floating bucket or figure out where else to mount water quality sensors
- New sonic rangefinder
- Remove sippers?

We left at 16:10 PST.

0 photos found

11 sets found

7 MB_flux graphs found