Field Notes

Mayberry: 2021-08-17 14:30:00 (DOY 229)
Author: Daphne Szutu
Others: Joe, Ariane

Summary: Regular data collection/cleaning, caterpillars are here!, set up radiometer cal kit, miniDOT has a few barnacles, changed Stardot camera enclosure mount, tightened sonic cable

2021-08-17
Mayberry

Joe, Ariane, and I arrived at 14:30 PDT. It was warm with mostly clear skies but an apparent band of wildfire smoke near the horizon. The caterpillars have (visibly) arrived at Mayberry! Some of the cattails near the tower look well chewed, but the damage is not as widespread yet as we see at SW.

The staff gauge read 71 cm.

Ari and Joe cleaned flux and rad sensors and put up the rad cal kit. Datalogger and sensors added:
CR1000 sn 23865
CNR4 sn 121038
PAR sn 060831
NDVI in sn 1049
NDVI out sn 1050

I downloaded met, camera, USB GHG, and miniDOT data. I moved the Stardot photos from the CF card to the laptop and replaced the card in the datalogger. I swapped in fresh desiccant for the miniDOT and water level sensors and put in new lithium batteries for the miniDOT.

The MiniDOT has a few (more than a few) barnacles growing on it. The copper screen is falling apart and it looks like a coating is coming off the sensor window. We should swap it out for maintenance with a fresh sensor next time. The conductivity has been increasing since last summer from 1 to 6 mS.

Ari used a rag to clean the green hairy algae growing on the miniDOT and eosGP sensors. I topped off the wash reservoir. I downloaded the FD data and cleared its memory.

Joe changed the mount of the Stardot camera to the outside side of the wooden post so that the Canon enclosure can swing up and down freely. The new Stardot view looked fine. I changed the Stardot time +2min to match the laptop time. We will set up the Picam again during senescence after we make some programming upgrades.

The sonic cable was loose at the sonic (again) so Joe tightened it.

LI-7500 readings:
CO2 398ppm
H2O 760ppm
T 28.4C
P 100.3kPa
SS 98-->100 after cleaning
LI7700 readings:
CH4 2.0ppm
RSSI 63--> 79 after cleaning

We left at 15:20 PDT.

3 photos found

20210817MB_RadiometerCompare.jpg ( 2021-08-17 15:10:32 ) Full size: 1920x1440
Radiometer inter-comparison begun