Field Notes

Mayberry: 2021-03-16 17:10:00 (DOY 75)
Author: Daphne Szutu
Others:

Summary: Regular data collection/cleaning, replaced eosGP pCO2 sensor

2021-03-16
Mayberry

I arrived at 17:10 PDT. It was a cool day with a cold breeze. There are some green reeds coming up on the edges of channels. The staff gauge read 43cm.

I downloaded met, camera, and USB GHG data. The reservoir was 90% full; I refilled it. I downloaded FD data and cleared its memory. I cleaned flux and rad sensors. The conductivity sensor was clean.

The eosGP sensor has been reading noise sporadically since December, so today I brought a replacement. I was planning to do an intercomparison with both eosGP sensors, but the current sensor was reading noise again, so I decided just to bring the current sensor back to the lab for testing. sn GP20160070 came off and sn GP20150111 went on. Iâ€™m not really sure if the newly installed sensor is working because the CO2 readings were close to 0, but maybe it needs more time to equilibrate with the water.

LI-7500 readings:
CO2 415ppm
H2O 386ppm
T 15.6C
P 101.6kPa
SS 97-->98 after cleaning
LI7700 readings:
CH4 1.97ppm
RSSI 68--> 84 after cleaning

I left at 18:00 PDT.

0 photos found

11 sets found

7 MB_flux graphs found