Field Notes

Sherman Barn: 2018-11-01 12:50:00 (DOY 305)
Author: Daphne Szutu
Others: Dennis, Kuno

Summary: Regular data collection/cleaning, levee construction done, swapped 7700 thermocouple

2018-11-01
Sherman Barn

Dennis, Kuno, and I arrived at 12:50. It was sunny and warm with thin clouds and hazy at the horizon. There were cows in our footprint and the field areas west of the barn are flooded. It looks like construction along the levee is done; all the trucks and equipment are gone. There were some wet spots on the levee and road on the way down from the levee.

The chambers were not working, so Kuno restarted them. Dennis took spectral measurements. I cleaned the flux sensors (spiderwebs everywhere and many spiders hanging out on the bird spikes). Dennis cleaned the radiometers.
The wash reservoir was Â¼ empty; we refilled it.

I collected met, camera, and USB GHG data. I replaced the 7700 thermocouple. I checked the NR01 PRT data and it seems to match the AirT well. I also trimmed some of the weeds inside our exclosure and under the radiometer.

LI-7500 readings:
CO2 410ppm
H2O 530ppm
T 24.1C
P 102.1kPa
SS 101--> 104 after cleaning

LI7700 readings:
CH4 0.08 mmol/m3 --> 2.1 ppm after TC swap
RSSI 3 --> 67 after cleaning

We left at 14:30.

0 photos found

3 sets found

4 SB_flux graphs found