Field Notes

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Other sites visited today: Bouldin Corn | Bouldin Alfalfa | East End
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Gilbert Tract: 2024-07-17 12:35:00 (DOY 199)
Author: Daphne Szutu
Others: Robert

Summary: Tules growing by tower, shadowband had fallen off--fixed, Song Meter Micro out of batteries

2024-07-17
Gilbert Tract

Robert and I arrived at 12:35 PST (13:35 PDT). It was sunny and warm with a cool breeze. Robert picked up the beaver skull he had stashed by the solar panel scaffolding. His friend has a plan to mount it.

The vegetation on the level slope and near the tower continues to fill in. We should do some trimming next time.

The staff gauge read 54cm at 12:54 PST.

I downloaded met, cam, and USB GHG data. I downloaded the miniDOT data and swapped its desiccant. I had removed the eosGP sensor last month but forgot to unwire its extension cable from the datalogger. Today I unwired it and added some jumpers between H and L to zero it out.

The shadowband had fallen off in the last few days. Robert found it on the ground right below and re-attached it. The real-time data afterwards looked good.

Robert cleaned flux and rad sensors and measured the surface water conductivity.

Sample, temperature-compensated conductivity, temperature
Surface, 372 uS, 21.3 C

I downloaded the Song Meter Micro data, although there were only files until 2024-06-29. I think it’s out of batteries because no LED lights come on. I’m pretty sure the batteries were near 100% (according to the app) at the last site visit. Maybe it’s that lithium battery feature where they lose power precipitously.

The 7500 read: 412ppm CO2, 765mol/m3 H2O, 27.4C, 101.5kPa, 97SS – 98 after cleaning
The 7700 read: 1.99ppm CH4, 40RSSI – 81 after cleaning

We got the channel at 13:10 PST. Tide was ebbing. I reset the ADCP clock, downloaded data, and restarted logging. The ADCP box has ants and needs a mothball.

We left at 13:30 PST (14:30 PDT).

0 photos found

8 sets found

Can't check MBWPEESWGT_mixed
Can't check MBEEWPSWEPGT_cam
16 GT_met graphs found