Field Notes

<--2020-07-24 11:30:00 | 2020-08-11 08:50:00-->
Other sites visited today: Bouldin Corn | Mayberry

Sherman Wetland: 2020-07-30 09:15:00 (DOY 212)
Author: Daphne Szutu
Others:

Summary: Permanent tower: Regular data collection/cleaning, windy day, plugged in ethernet switch, replaced precip funnel, camera card bad
Temp tower: Regular data collection/cleaning, windy day

2020-07-30
Sherman Wetland

I arrived at 9:15 PDT. It was a very windy day with cloudless skies. It was dry under the tower, and the water level was 31 cm.

The reservoir was Â½ full; I refilled it. I cleaned flux and rad sensors. The SWin and LWin sensors were a bit muddy and there were spiderwebs on the sonic transducers. I also tried cleaning the staff gauge, but it needs a green scrubby pad next time.

I downloaded met, camera, USB GHG, and miniDOT data. There were only 2 days of photos on this card, and we saw this issue the last time the card was used, so itâ€™s time to retire this card. I added a 5V-12V DC-DC converter for the ethernet switch and connected the camera and the datalogger to the switch. I checked the phenocam clock, which looked ok.

I installed a replacement funnel for the precip bucket. I brought the black rubber band (from the old bucket) back to the lab.

Both the eosGP and the miniDOT were above the water surface, and I lowered them into the water. I swapped the miniDOT desiccant.

I planned to install a water level sensor, but forgot to bring conduit for the cable. No sense in putting it out only to get the cable damaged again.

LI-7500 readings:
CO2 393ppm
H2O 700ppm
T 18.7C
P 101.5kPa
SS 96--> 97 after cleaning
LI7700 readings:
CH4 1.85 ppm
RSSI 37--> 71 after cleaning

I left at 10:05 PDT.

2020-07-30
Sherman Wetland Temporary Tower

I arrived at 10:25 PDT. It was a windy and sunny day with clear skies. There was no water under the tower. The wash reservoir was full, but the mirror spun (no spray) when I had just arrived around 10:30. I havenâ€™t seen any problems with 7700 RSSI in the data, but Iâ€™ll keep on eye on it. I shooed away some wasps in the met box.

I downloaded met, cam, and USB GHG data. I cleaned the flux and rad sensors and the picam winow. There were spiderwebs on the sonic. I forgot to clear the picam last time, so had to download 3.9 Gb of photos this time. This time, I made sure to delete the photos after downloading.

LI-7500 readings:
CO2 393pm
H2O 730ppm
T 20.7C
P 101.7kPa
SS 93--> 96 after cleaning
LI7700 readings:
CH4 1.9ppm
RSSI 44--> 73 after cleaning

I left at 11:15 PDT.

2 photos found

20200730SW_PrecipFunnel.jpg ( 2020-07-30 10:05:01 ) Full size: 1920x1440
New screw-type precip funnel installed at SW