Field Notes

East End: 2023-02-01 13:00:00 (DOY 32)
Author: Daphne Szutu
Others: Robert

Summary: Regular data collection/cleaning, no power issues in last 2 weeks, workers improving interior levee roads, dfPAR shadowband not rotating--replaced motor

2023-02-01
East End

Robert and I arrived at 13:00 PST. It was cool with thin high clouds and a slight breeze. The staff gauge read 55cm. While we were here, we had to move the truck out of the way to let a backhoe and a wide, large tractor drive by. The tractor was carrying a tranche of soil behind it. I think they were going around filling the holes.

The reservoir was 10% full, and I refilled it. There is a slow leak from the in-line filter even though I swapped the filter last visit and the connections still look good. Not sure what to do next to fix it. There were some wasps in the box, and I was done dealing with wasps for today.

Robert swapped out the dfPAR motor. The first replacement motor worked briefly and then stopped moving. He tried a second replacement motor that was brand new. This one worked and dfPAR data looked ok before we left.

I downloaded met, cam, USB GHG, and miniDOT data and cleaned flux and rad sensors. The NDVI sensors weren’t working last time, but they seem ok now. Maybe the power cycle last time helped. I swapped the miniDOT and water level desiccant. The data looked complete this time so raising the solar panels probably helped.

The 7500 read: 438ppm CO2, 341mmol/m3 H2O, 13.7C, 102.2kPa, 98SS – 100 after cleaning
The 7700 read: 2.2ppm CH4, 40SS – 82 after cleaning

We left at 13:40 PST.

0 photos found

11 sets found

14 EE_met graphs found