Field Notes

Mayberry: 2019-09-04 11:10:00 (DOY 247)
Author: Joe Verfaillie
Others: Daphne, Alex

Summary: Box need mothballs, straightened water Rnet, fluorometer seems okay, installed DFRobot water level and updated CR1000 program to ignore NaN from Campbell water level sensor.

Mayberry
2019-09-04

Daphne, Alex and I arrive at 11:10 PDT. It was clear sunny and warm with a few clouds. The water level was 21cm â€“ lower than last time. The cattail and tules are still green and growing but the weeds on the levees seem to be declining.

We took water samples for Isabel at 10:30.

The 7500 read: 397ppm CO2, 823mmol/m3 H2O, 26.3C, 101.0kPa, 99SS â€“ 102 after cleaning
The 7700 read: 1.94ppm CH4, 37RSSI â€“ 83 after cleaning.
There was a bunch of spider webs and cattail fluff on the eddy sensors that was cleaned off. The wash reservoir was 3/4 full â€“ refilled.

We raised the fluorometer to check its condition. It does not have its shade cap on and looked clean. With the low water level it may not be much above the bottom muck.

I put a new leash on the pin for the camera arm.

The Rnet-LITE over the water was tilted to the north a little. I tried to straighten it but should put a level on it to check.

We installed a new water level pressure sensor from DFRobot sn GL-136-01. After downloading the met data we updated the CR1000 program to add an analog channel for the water level sensor and a filter to ignore NaN values from the existing water level sensor. The new sensor is in the water next to the northeast corner post of the scaffolding. It was in about 21cm of water and about 5 cm above the bottom.

The box had a few ants and needs moth balls but we didnâ€™t have any moth balls with us (actually we did but couldnâ€™t find them!)

We left at 11:50

0 photos found

11 sets found

7 MB_flux graphs found