Field Notes

<--2020-06-16 12:40:00 | 2020-07-24 11:30:00-->
Other sites visited today: Sherman Barn

Sherman Wetland: 2020-07-09 11:25:00 (DOY 191)
Author: Daphne Szutu
Others: Joe

Summary: Permanent: Regular data collection/cleaning, low water level, datalogger power was off--fixed, missing met/cam for most of the last 3 weeks, removed water level sensor, swapped dfPAR motor
Temporary: Regular data collection/cleaning

2020-07-09
Sherman Wetland

I initially met Christiana at 8:30 to give her a set of SW and MB keys. Joe and I arrived later at 11:25 PDT. It was a warm and breezy day with clear skies. There was no water at the tower, and the land north of the levee trail is dry. Christiana was here earlier this morning to test out her floating chambers. The staff gauge read 52 cm.

There was no power at the datalogger when we arrived because of a short in the water level sensor. The met box has 2 DC-DC converters, a smaller one for the 12V power strip and a larger one for the 5V ethernet switch. We originally thought the smaller 24V-12V converter died because it was hot to the touch. We moved the smaller DC-DC converter from the ethernet switch to the 12V power strip, adjusting the output from 5V to 12.5V. After we figured out the small DC-DC converter still worked, we tried to use it for the ethernet switch, but it didnâ€™t have the right input range to connect it to the 12V power strip. We caused a few shorts while trying to swap the DC-DC converters around, so we flipped the 5A breaker in the charge controller box to turn the system off while we were messing with the power.

We brought the water level sensor sn 20010026 back to the lab for testing.

We confirmed all the met and flux sensors seemed ok after the system was back on. I synched the camera clock with the laptop time, and reset the 7550 because of a 7700 clock sync error.

I downloaded met, camera, USB GHG, and miniDOT data. There were only a few days of met and camera data in the past 3 weeks because of the short in the 12V power strip. The GHG sensors were on the 24V power strip and that data seems fine.

The miniDOT and eosGP sensors were out of the water; I lowered them into the water. I swapped the miniDOT desiccant pack. The reservoir was Â¼ full; we refilled it. Joe cleaned the flux and rad sensors and the solar panels. I used a green scrubby pad to clean the staff gauge.

Joe swapped the dfPAR motor.

The precipitation bucket funnel was completely missing, even though the black rubber band was still securely around the bucket. Weâ€™ll have to order another funnel.

LI-7500 readings:
CO2 400ppm
H2O 720ppm
T 25.3C
P 101.1kPa
SS 94--> 99 after cleaning
LI7700 readings:
CH4 1.97 ppm
RSSI 26--> 82 after cleaning

We left at 12:35 PDT.

2020-07-09
Sherman Wetland Temporary Tower

Joe and I arrived at 13:10 PDT. It was a warm, breezy, and dusty day. There was no water at the tower, but the cattails are continuing to fill in the space west of the tower. The met box was open, but everything seems fine.
I downloaded met, camera, and USB GHG data. Joe cleaned the flux and rad sensors and the solar panels. The wash reservoir was mostly full; I topped it off.

LI-7500 readings:
CO2 3994pm
H2O 775ppm
T 28.2C
P 101.4kPa
SS 94--> 96 after cleaning
LI7700 readings:
CH4 1.95ppm
RSSI 57--> 74 after cleaning

We left around 13:50 PDT.

0 photos found

7 sets found

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