Field Notes

East End: 2019-01-18 12:50:00 (DOY 18)
Author: Daphne Szutu
Others: Dennis, Kuno, Camilo, Jiangong

Summary: Regular data collection/cleaning, tules blown down, no photos, installed eosGP CO2 sensor in water, PTB110 barometer drifting lower

2019-01-18
East End

Dennis, Kuno, Camilo, Jiangong, and I arrived at 12:50. It was calm, overcast, and mild. The tules have mostly been blown down. The water level was 45 cm. The upper boardwalk has a crack and needs to be replaced.

We topped off the wash reservoir, which was mostly full. Kuno cleaned the flux and rad sensors. I downloaded met, camera, and USB GHG data. I dropped the serial/RS232 cables from the fluxalot laptop in the water, so I ended up downloading the met data to the small laptop with the serial-to-RS232 cable.

When we arrived, the camera was off so we had to short the two power wires to turn the camera on. There was only 1 photo on the card from the previous site visit; I checked the camera settings so hopefully there are timelapse photos next time (had to press â€œprintâ€ and then the shutter button to start the intervalometer program).

We installed an eosGP CO2 sensor (sn GP20150101, 2% sensor) in the water to replace one we had removed the previous site visit.

LI-7500 readings:
CO2 415ppm
H2O 600ppm
T 18.1C
P 102.6kPa
SS 94-->95 after cleaning

LI7700 readings:
CH4 2.0ppm
RSSI 22 --> 81 after cleaning

We left at 13:35.

Looking at the data back in the lab, the AtmP from the PTB110 looks like it started to drift low compared to the 7500/7700. We should check this next time.

3 photos found

20190118EE_TuleBlowdown.jpg ( 2019-01-18 00:00:00 ) Full size: 1920x1440
Dennis and Camilo at East End tower; tules were blown down recently after high winds.

20190118EE_DaphneJiangongKunoCamilo.JPG ( 2019-01-18 12:50:33 ) Full size: 1920x1440
Daphne, Jiangong, Kuno, and Camilo at East End tower. Jiangong and Camilo's first time to the Delta.