Field Notes

<--2020-06-02 10:00:00 | 2020-07-07 08:50:00-->
Other sites visited today: West Pond | Sherman Barn | Sherman Wetland
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Mayberry: 2020-06-16 10:35:00 (DOY 168)
Author: Joe Verfaillie
Others:

Summary: Reinstalled fluorometer, adjusted boom and FD mount, swapped HMP45 solar shield, added connector for FD chamber.

Mayberry
2020-06-16

I arrived at10:35. It was clear and sunny with the usual breeze from the west. The goats did an amazing job on the weeds. They also got into the tules a little near the radiation boom. The overall wetland looks kind of brown this year â€“ lots of standing dead cattails. The water level was 16.5cm â€“ we need a scratchy pad to clean the staff gauge.

I took water samples from CDOM at 10:40. The water is greenish but looks a little brown in the vials.

The water sensor boom has moved a little to the east due to wind. The guy wire was holding it a little higher in the water and the FD chamber was not in contact with the water. Iâ€™m not sure if this was due to the change in position. I added some slack to the guy wire and the FD chamber lowered to just touch the water. I adjusted its mount to lower it a couple more centimeters.

I reinstalled the fluorometer sn 2300565. The power wires were backwards â€“ thatâ€™s why it browned out the power last time and blew my 3A fuse this time. Black is +12V and white is G (go figure) itâ€™s labeled on the cable. Now it has a 3A fuse inline and a DC-DC booster to bump the voltage to 24V. It seemed to be running okay â€“ values in the thousands for turbidity and CDOM but the new red excitation chlorophyll sensor was reading zero. Every once in a while chlorophyll bounced up slightly. We will watch it for a bit.

I collected the miniDot data.

I swapped the HMP solar shield because the one on the tower was missing a bolt. We can clean it up in the lab and replace its bolt.

The 7500 read: 407.7ppm CO2, 549.0mmol/m3 H2O, 22.4C, 101.4kPa, 98.2SS â€“ 99.8 after cleaning
The 7700 read: 1.93ppm CH4, 40RSSI â€“ 81 after cleaning.
I topped up the wash reservoir.

I added a connector to the FD chamber cable and collected its data but did not clear its memory.

I left at 12:20

0 photos found

11 sets found

7 MB_flux graphs found