Field Notes

Sherman Wetland: 2017-07-12 10:50:00 (DOY 193)
Author: Patty Oikawa
Others: Ankit Srinivas and Max Burnham

Summary: Set up calibration gas on LGR and downloaded fast GHG data from tower

We arrived at 10:50am. It was windy and sunny. We checked the LGR, which had lost connection with team viewer and re-set the permanent password to 19891989. This seems to have corrected the issue. Go under team viewer preferences, security, disable random generation of password and set permanent password.
We then set up the multiport inlet unit to the LGR to sample Joe's tank of CO2 cal gas for 5min 2x per day at 12:20pm and 12:20 am. Tank pressure=1600psi
Joe tank=402.69 ppm, LGR read 399.38ppm D13C = -29.6 per mil
--looks like this will be a nice cal gas, will take a split next week and send to IRMS lab for testing

Flow rates from tower are still 12 L/min and stable.
I also brought out a tank of ambient air but it seems this tank doesn't have CO2 in it. I will remove from the field next time.

Then we downloaded fast GHG data from the tower. I copied to my computer, wiped the usb clean and reinstalled.

LGR
CO2 411.2ppm
D13C -7.37 per mil
D18O 29.9 per mil
H2O 287.1 ppm
gas temp 44.78C
P 119.79 Torr
laser ring down time 12.89 microsec
laser aborption and adjustment ok

0 photos found

7 sets found

Can't check MBWPEESWGT_mixed
Can't check MBEEWPSWEPGT_cam
15 SW_met graphs found