Field Notes

East End: 2023-07-11 12:00:00 (DOY 192)
Author: Daphne Szutu
Others: Carlos

Summary: Regular data collection/cleaning, hot day, swapped 7500 for calibration, larvacide application nearby

2023-07-11
East End

Carlos and I arrived at 12:00 PDT. It was sunny and hot. There will be another heat wave this weekend with temperatures >36C Friday through Monday. On the way in, we passed 2 people on the gas pad. They were from Leading Edge Aerial Technologies and flying a UAV for larvacide application. The wetland is continuing to green up although some of the reeds had brown tips, probably from caterpillar damage. The staff gauge read 73cm.

Carlos secured the precip bucket post with a second conduit strap. We only had one at the last visit when we were fixing the precip bucket installation. It should be plenty secure now.

I downloaded met, cam, miniDOT, and USB GHG data. We swapped desiccant for the miniDOT and water level sensors. Carlos cleaned flux and rad sensors. I topped off the wash reservoir. I checked the conductivity sensor as part of its routine check every three months and confirmed the orifice was clean.

I updated the hours for the 7700 heater to reflect summertime hours. Old hours = 18:00 to 09:00. New hours = 20:00 to 06:00. I’ll have to set a reminder to adjust the hours in a few months when the days are shorter and cooler.

We swapped the LI7500A for calibration: sn 75H-2176 came off and sn 75H-2667 went on. I uploaded the new configuration file and updated the pressure coefficients. All looked ok.

75H-2176 read: 413ppm CO2, 803mmol/m3 H2O, 29.7C, 101.3kPa, 100SS
75H-2176 clean read: 418ppm CO2, 640mmol/m3 H2O, 29.5C, 101.3kPa, 101.7SS
75H-2667 read: 424ppm CO2, 650mmol/m3 H2O, 29.7C, 101.3kPa, 101.2SS
The 7700 read: 2.1ppm CH4, 39RSSI – 81 after cleaning

We left at 12:30 PDT.

0 photos found

11 sets found

14 EE_met graphs found